CTK / CooTek (Cayman) Inc - ADR - تصريحات هيئة الأوراق المالية والبورصات، التقرير السنوي، بيان الوكيل

CooTek (كايمان) Inc - ADR
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الإحصائيات الأساسية
LEI 549300KWTVBL1XCBM775
CIK 1734262
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to CooTek (Cayman) Inc - ADR
SEC Filings (Chronological Order)
توفر هذه الصفحة قائمة كاملة ومرتبة ترتيبًا زمنيًا لتصريحات هيئة الأوراق المالية والبورصات، باستثناء تصريحات الملكية التي نقدمها في مكان آخر.
June 25, 2025 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2025 Commission File Number: 001-38665

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2025 Commission File Number: 001-38665 CooTEK (CAYMAN) INC. 11F, T2, No.16, Lane 399, Xinlong Road Minhang District, Shanghai, 201101 People’s Republic of China (Address of principal execu

April 30, 2025 EX-11.2

COOTEK (CAYMAN) INC. AMENDED AND RESTATED Statement of PolicIES Governing Material non-public Information and The Prevention of InsideR Trading (As adopted by the Board of Directors of CooTek (Cayman) Inc. and effective on April 25, 2025)

Exhibit 11.2 COOTEK (CAYMAN) INC. AMENDED AND RESTATED Statement of PolicIES Governing Material non-public Information and The Prevention of InsideR Trading (As adopted by the Board of Directors of CooTek (Cayman) Inc. and effective on April 25, 2025) This Amended and Restated Statement of Policies Governing Material Non-Public Information and the Prevention of Insider Trading (this “Statement”) a

April 30, 2025 EX-15.2

April 30, 2025

Exhibit 15.2 April 30, 2025 CooTek (Cayman) Inc. 11F, T2, No.16, Lane 399, Xinlong Road Minhang District Shanghai People’s Republic of China Dear Sir/Madam: We hereby consent to the reference of our name under the headings “Item 3. Key Information—Permissions Required from the PRC Authorities for Our Operations,” “Item 3. Key Information—D. Risk Factors—Risks Related to Our Corporate Structure” an

April 30, 2025 EX-13.2

Certification by the Principal Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 13.2 Certification by the Principal Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 In connection with the Annual Report of CooTek (Cayman) Inc. (the “Company”) on Form 20-F for the fiscal year ended December 31, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Karl Kan Zhang, Acting Chief Financial Officer of the C

April 30, 2025 EX-13.1

Certification by the Principal Executive Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 13.1 Certification by the Principal Executive Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 In connection with the Annual Report of CooTek (Cayman) Inc. (the “Company”) on Form 20-F for the fiscal year ended December 31, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Karl Kan Zhang, Principal Executive Officer of the Comp

April 30, 2025 EX-12.1

Certification by the Principal Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 12.1 Certification by the Principal Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Karl Kan Zhang, certify that: 1.I have reviewed this annual report on Form 20-F of CooTek (Cayman) Inc.; 2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in lig

April 30, 2025 EX-15.3

Our ref

Exhibit 15.3 Our ref CooTek (Cayman) Inc. 11F, T2, No. 16, Lane 399, Xinlong Road Minhang District, Shanghai, 201101 People’s Republic of China 30 April 2025 Dear Sirs CooTek (Cayman) Inc. We have acted as legal advisers as to the laws of the Cayman Islands to CooTek (Cayman) Inc., an exempted company incorporated in the Cayman Islands with limited liability (the “Company”), in connection with the

April 30, 2025 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 20-F

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF

April 30, 2025 EX-12.2

Certification by the Principal Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 12.2 Certification by the Principal Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Karl Kan Zhang, certify that: 1.I have reviewed this annual report on Form 20-F of CooTek (Cayman) Inc.; 2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in lig

April 30, 2025 EX-15.1

Consent of Shandong Haoxin Certified Public Accountants Co., Ltd.

Exhibit 15.1 Consent of Shandong Haoxin Certified Public Accountants Co., Ltd. We hereby consent to the incorporation by reference in the Registration Statements No. 333-229171 on Form S-8 of CooTek (Cayman) Inc. of our report dated April 30, 2025 relating to the financial statements, which appears in this Annual Report on Form 20-F of CooTek (Cayman) Inc. for the year ended December 31, 2024. /s/

June 12, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2024 Commission File Number: 001-38665

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2024 Commission File Number: 001-38665 CooTEK (CAYMAN) INC. 11F, T2, No.16, Lane 399, Xinlong Road Minhang District, Shanghai, 201101 People’s Republic of China (Address of principal execu

April 30, 2024 EX-13.1

Certification by the Principal Executive Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 13.1 Certification by the Principal Executive Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 In connection with the Annual Report of CooTek (Cayman) Inc. (the “Company”) on Form 20-F for the fiscal year ended December 31, 2023 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Karl Kan Zhang, Principal Executive Officer of the Comp

April 30, 2024 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 20-F

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF

April 30, 2024 EX-15.4

Our ref

Exhibit 15.4 Our refVSL/675748-000005/28813611v1 CooTek (Cayman) Inc. 11F, T2, No. 16, Lane 399, Xinlong Road Minhang District, Shanghai, 201101 People’s Republic of China 30 April 2024 Dear Sirs CooTek (Cayman) Inc. We have acted as legal advisers as to the laws of the Cayman Islands to CooTek (Cayman) Inc., an exempted company incorporated in the Cayman Islands with limited liability (the “Compa

April 30, 2024 EX-13.2

Certification by the Principal Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 13.2 Certification by the Principal Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 In connection with the Annual Report of CooTek (Cayman) Inc. (the “Company”) on Form 20-F for the fiscal year ended December 31, 2023 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Karl Kan Zhang, Acting Chief Financial Officer of the C

April 30, 2024 EX-15.2

Consent of Shandong Haoxin Certified Public Accountants Co., Ltd.

Exhibit 15.2 Consent of Shandong Haoxin Certified Public Accountants Co., Ltd. We hereby consent to the incorporation by reference in the Registration Statements No. 333-229171 on Form S-8 of CooTek (Cayman) Inc. of our report dated April 30, 2024 relating to the financial statements, which appears in this Annual Report on Form 20-F of CooTek (Cayman) Inc. for the year ended December 31, 2023. /s/

April 30, 2024 EX-99.1

CooTek Files Annual Report on Form 20-F for Fiscal Year 2023

Exhibit 99.1 CooTek Files Annual Report on Form 20-F for Fiscal Year 2023 SHANGHAI, April 30, 2024—CooTek (Cayman) Inc. (“CooTek” or the “Company”) (OTC: CTKYY), a global mobile internet company, today announced that it filed its annual report on Form 20-F for the fiscal year ended December 31, 2023 with the Securities and Exchange Commission (the “SEC”) on April 30, 2024. The annual report can be

April 30, 2024 EX-4.17

Terms of Use Agreement

Exhibit 4.17 Terms of Use Agreement These Terms of Use (the “Agreement”) govern the relationship between you (“User,” “you” or “your”) and AppLovin Corporation, a Delaware corporation, or AppLovin (Singapore) Pte. Ltd., a Singapore company, if applicable (collectively, “AppLovin,” “we” or “our,” and together with “User,” the “Parties,” and each a “Party”) and apply to your use of the Services (as

April 30, 2024 EX-15.1

Consent of Independent Registered Public Accounting Firm

Exhibit 15.1 Consent of Independent Registered Public Accounting Firm We consent to the incorporation by reference in the Registration Statement No. 333-229171 on Form S-8 of our report dated April 29, 2022, relating to the financial statements of CooTek (Cayman) Inc. appearing in this Annual Report on Form 20-F of CooTek (Cayman) Inc. for the year ended December 31, 2023. /s/ Deloitte Touche Tohm

April 30, 2024 EX-12.2

Certification by the Principal Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 12.2 Certification by the Principal Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Karl Kan Zhang, certify that: 1.I have reviewed this annual report on Form 20-F of CooTek (Cayman) Inc.; 2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in lig

April 30, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2024 Commission File Number: 001-3866

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2024 Commission File Number: 001-38665 CooTEK (CAYMAN) INC. 11F, T2, No.16, Lane 399, Xinlong Road Minhang District, Shanghai, 201101 People’s Republic of China (Address of principal exec

April 30, 2024 EX-15.3

April 30, 2024

Exhibit 15.3 April 30, 2024 CooTek (Cayman) Inc. 11F, T2, No.16, Lane 399, Xinlong Road Minhang District Shanghai People’s Republic of China Dear Sir/Madam: We hereby consent to the reference of our name under the headings “Item 3. Key Information—Permissions Required from the PRC Authorities for Our Operations,” “Item 3. Key Information—D. Risk Factors—Risks Related to Our Corporate Structure” an

April 30, 2024 EX-12.1

Certification by the Principal Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 12.1 Certification by the Principal Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Karl Kan Zhang, certify that: 1.I have reviewed this annual report on Form 20-F of CooTek (Cayman) Inc.; 2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in lig

February 2, 2024 SC 13D

CTK / CooTek (Cayman) Inc - ADR / Zhang Kan - SC 13D Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No.

February 2, 2024 EX-99.A

JOINT FILING AGREEMENT

EX-99.A 2 tm244885d1ex99-a.htm EXHIBIT A EXHIBIT A JOINT FILING AGREEMENT In accordance with Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree to the joint filing with all other Reporting Persons (as such term is defined in the Schedule 13D referred to below) on behalf of each of them of a statement on Schedule 13D (including amendments t

January 2, 2024 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2024 Commission File Number: 001-38

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2024 Commission File Number: 001-38665 CooTEK (CAYMAN) INC. 11F, T2, NO.16, Lane 399, Xinlong Road Minhang District, Shanghai, 201101 People’s Republic of China (Address of principal ex

December 11, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December 2023 Commission File Number: 001-3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December 2023 Commission File Number: 001-38665 CooTEK (CAYMAN) INC. 11F, T2, NO.16, Lane 399, Xinlong Road Minhang District, Shanghai, 201101 People’s Republic of China (Address of principal e

July 25, 2023 CORRESP

* * *

CooTek (Cayman) Inc. 11F, T2, No.16, Lane 399, Xinlong Road, Minhang District Shanghai, 201101 People’s Republic of China July 25, 2023 VIA EDGAR Mr. Kyle Wiley Ms. Jennifer Thompson Division of Corporation Finance Disclosure Review Program Securities and Exchange Commission 100 F Street, N.E. Washington, D.C. 20549 Re: CooTek (Cayman) Inc. (the “Company”) Form 20-F for the Year Ended December 31,

July 12, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2023 Commission File Number: 001-38665

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2023 Commission File Number: 001-38665 CooTEK (CAYMAN) INC. 11F, T2, NO.16, Lane 399, Xinlong Road Minhang District, Shanghai, 201101 People’s Republic of China (Address of principal execu

May 8, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2023 Commission File Number: 001-38665

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2023 Commission File Number: 001-38665 CooTEK (CAYMAN) INC. 11F, T2, NO.16, Lane 399, Xinlong Road Minhang District, Shanghai, 201101 People’s Republic of China (Address of principal execut

April 26, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2023 Commission File Number: 001-3866

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2023 Commission File Number: 001-38665 CooTEK (CAYMAN) INC. 11F, T2, NO.16, Lane 399, Xinlong Road Minhang District, Shanghai, 201101 People’s Republic of China (Address of principal exec

April 26, 2023 EX-15.3

April 26, 2023

Exhibit 15.3 April 26, 2023 CooTek (Cayman) Inc. 11F, T2, No.16, Lane 399, Xinlong Road Minhang District Shanghai People's Republic of China Dear Sir/Madam: We hereby consent to the reference of our name under the headings “Item 3. Key Information—Permissions Required from the PRC Authorities for Our Operations,” "Item 3. Key Information—D. Risk Factors—Risks Related to Our Corporate Structure" an

April 26, 2023 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2023 Commission File Number: 001-3866

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2023 Commission File Number: 001-38665 CooTEK (CAYMAN) INC. 11F, T2, NO.16, Lane 399, Xinlong Road Minhang District, Shanghai, 201101 People’s Republic of China (Address of principal exec

April 26, 2023 EX-12.2

Certification by the Principal Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 12.2 Certification by the Principal Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Jacky Junkai Lin, certify that: 1.I have reviewed this annual report on Form 20-F of CooTek (Cayman) Inc.; 2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in l

April 26, 2023 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR ☐ ––– TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(

April 26, 2023 EX-15.2

Consent of Shandong Haoxin Certified Public Accountants Co., Ltd.

Exhibit 15.2 Consent of Shandong Haoxin Certified Public Accountants Co., Ltd. We hereby consent to the incorporation by reference in the Registration Statements No. 333-229171 on Form S-8 and No. 333-251355 on Form F-3 of CooTek (Cayman) Inc. of our report dated April 26, 2023 relating to the financial statements, which appears in this Annual Report on Form 20-F of CooTek (Cayman) Inc. for the ye

April 26, 2023 EX-2.4

AMENDMENT NO. 1 TO THE DEPOSIT AGREEMENT

Exhibit 2.4 Execution Version AMENDMENT NO. 1 TO THE DEPOSIT AGREEMENT THIS AMENDMENT NO. 1 dated as of May 9, 2022 (the “Effective Date”) to the Deposit Agreement, dated as of September 27, 2018, (the “Deposit Agreement”), by and among (i) CooTek (Cayman) Inc., a company incorporated under the laws of the Cayman Islands, with its principal executive office at 10-11F, T2, No.16, Lane 399, Xinlong

April 26, 2023 EX-15.1

Consent of Independent Registered Public Accounting Firm

Exhibit 15.1 Consent of Independent Registered Public Accounting Firm We consent to the incorporation by reference in the Registration Statements No. 333-229171 on Form S-8 and No. 333-251355 on Form F-3 of our report dated April 29, 2022, relating to the consolidated financial statements and financial statement schedule of CooTek (Cayman) Inc., its subsidiaries and its consolidated variable inter

April 26, 2023 EX-99.1

CooTek Files Annual Report on Form 20-F for Fiscal Year 2022

EX-99.1 2 tm2313523d2ex99-1.htm EXHIBIT 99.1 Exhibit 99.1 CooTek Files Annual Report on Form 20-F for Fiscal Year 2022 SHANGHAI, April 26, 2023 /PRNewswire/ - CooTek (Cayman) Inc. (OTC: CTKYY) (“CooTek” or the “Company”), a global mobile internet company, today announced that it filed its annual report on Form 20-F for the fiscal year ended December 31, 2022 with the Securities and Exchange Commis

April 26, 2023 EX-2.6

Description of rights of each class of securities registered under Section 12 of the Securities Exchange Act of 1934 (the “Exchange Act”)

Exhibit 2.6 Description of rights of each class of securities registered under Section 12 of the Securities Exchange Act of 1934 (the “Exchange Act”) Our Class A ordinary shares, par value $0.00001 per share, of CooTek (Cayman) Inc. (“we,” “our,” “our company,” or “us”) are registered under Section 12(b) of the Exchange Act, and our American depositary shares (“ADSs”), each representing 650 Class

April 26, 2023 EX-13.2

Certification by the Principal Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 13.2 Certification by the Principal Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 In connection with the Annual Report of CooTek (Cayman) Inc. (the “Company”) on Form 20-F for the fiscal year ended December 31, 2022 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Jacky Junkai Lin, Interim Chief Financial Officer of th

April 26, 2023 EX-15.5

April 26, 2023

Exhibit 15.5 April 26, 2023 Securities and Exchange Commission 100F Street, N.E. Washington, D.C. 20549-7561 United States Dear Sirs/Madams, We have read Item 16F of Cootek (Cayman) Inc.’s Form 20-F dated April 26, 2023 and have the following comments: 1. We agree with the statements made in paragraphs 2, 3, 4 and 6 of Item 16F for which we have a basis on which to comment on, and we agree with, t

April 26, 2023 EX-4.1

COOTEK (CAYMAN) INC. AMENDED AND RESTATED 2012 STOCK INCENTIVE PLAN

Exhibit 4.1 COOTEK (CAYMAN) INC. AMENDED AND RESTATED 2012 STOCK INCENTIVE PLAN 1.Purposes of the Plan. The purposes of this Plan are to attract and retain the best available personnel, to provide additional incentives to selected Senior Managers, Key Persons and other Employees and to promote the success of the Company’s business. 2.Definitions. The following definitions shall apply as used herei

April 26, 2023 EX-15.4

Our ref

Exhibit 15.4 Our refVSL/675748-000005/21894065v1 CooTek (Cayman) Inc. 11F, T2, No. 16, Lane 399, Xinlong Road Minhang District, Shanghai, 201101 People’s Republic of China 26 April 2023 Dear Sirs CooTek (Cayman) Inc. We have acted as legal advisers as to the laws of the Cayman Islands to CooTek (Cayman) Inc., an exempted company incorporated in the Cayman Islands with limited liability (the “Compa

April 26, 2023 EX-13.1

Certification by the Principal Executive Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 13.1 Certification by the Principal Executive Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 In connection with the Annual Report of CooTek (Cayman) Inc. (the “Company”) on Form 20-F for the fiscal year ended December 31, 2022 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Karl Kan Zhang, Principal Executive Officer of the Comp

April 26, 2023 EX-12.1

Certification by the Principal Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 12.1 Certification by the Principal Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Karl Kan Zhang, certify that: 1.I have reviewed this annual report on Form 20-F of CooTek (Cayman) Inc.; 2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in lig

February 14, 2023 SC 13G/A

CTK / CooTek (Cayman) Inc / Qiming Corporate GP II, Ltd. - FORM SC 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 3)* CooTek (Cayman) Inc. (Name of Issuer) Class A Ordinary shares, par value US$0.00001 per share (Title of Class of Securities) 21718L 201** (CUSIP Number) December 31, 2022 (Date of Event which Requires Filing of this Statement) Check the appropriate box

February 1, 2023 SC 13G/A

CTK / CooTek (Cayman) Inc / Li Qiaoling - SC 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 3)* CooTek (Cayman) Inc. (Name of Issuer) Class A Ordinary Shares, par value $0.00001 per share (Title of Class of Securities) 21718L 201 (CUSIP Number) December 31, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to de

February 1, 2023 SC 13G/A

CTK / CooTek (Cayman) Inc / Zhang Kan - SC 13G/A Passive Investment

SC 13G/A 1 tm234847d2sc13ga.htm SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 3)* CooTek (Cayman) Inc. (Name of Issuer) Class A Ordinary Shares, par value $0.00001 per share (Title of Class of Securities) 21718L 201 (CUSIP Number) December 31, 2022 (Date of Event Which Requires Filing of this S

December 22, 2022 CORRESP

* * *

CooTek (Cayman) Inc. 11F, T2, No.16 Lane 399 Xinlong Road, Minhang District Shanghai, 201101 People’s Republic of China December 22, 2022 VIA EDGAR Ms. Megan Akst Ms. Kathleen Collins Division of Corporation Finance Office of Technology Securities and Exchange Commission 100 F Street, N.E. Washington, D.C. 20549 Re: CooTek (Cayman) Inc. (the “Company”) Form 20-F for the Fiscal Year Ended December

December 22, 2022 EX-15.2

Consent of JunHe LLP

Exhibit 15.2 26/F, HKRI Centre One, HKRI Taikoo Hui 288 Shimen Road (No.1) Shanghai 200041, P. R. China T: (86-21) 5298-5488 F: (86-21) 5298-5492 December 22, 2022 CooTek (Cayman) Inc. 9-11F, T2, No.16, Lane 399, Xinlong Road Minhang District Shanghai People's Republic of China Dear Sir/Madam: We hereby consent to the reference of our name under the headings “Item 3. Key Information—Permissions Re

December 22, 2022 EX-12.2

Principal Financial Officer Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 12.2 Certification by the Principal Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Jacky Junkai Lin, certify that: 1.I have reviewed this annual report on Form 20-F, as amended by Amendment No. 1 thereto, of CooTek (Cayman) Inc.; 2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact nec

December 22, 2022 EX-13.2

Principal Financial Officer Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 13.2 Certification by the Principal Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 In connection with the Annual Report of CooTek (Cayman) Inc. (the “Company”) on Form 20-F for the fiscal year ended December 31, 2021 as filed with the Securities and Exchange Commission on April 29, 2022, as amended by Amendment No. 1 thereto (the “Report”), I, Jacky Junkai Lin,

December 22, 2022 EX-12.1

Principal Executive Officer Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 12.1 Certification by the Principal Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Karl Kan Zhang, certify that: 1.I have reviewed this annual report on Form 20-F, as amended by Amendment No. 1 thereto, of CooTek (Cayman) Inc.; 2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact neces

December 22, 2022 20-F/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F/A (Amendment No. 1)

Table of Contents ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

December 22, 2022 EX-13.1

Principal Executive Officer Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 13.1 Certification by the Principal Executive Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 In connection with the Annual Report of CooTek (Cayman) Inc. (the “Company”) on Form 20-F for the fiscal year ended December 31, 2021 as filed with the Securities and Exchange Commission on April 29, 2022, as amended by Amendment No. 1 thereto (the “Report”), I, Karl Kan Zhang, P

November 30, 2022 CORRESP

CooTek (Cayman) Inc.

CORRESP 1 filename1.htm CooTek (Cayman) Inc. 11F, T2, No.16 Lane 399 Xinlong Road, Minhang District Shanghai, 201101 People’s Republic of China November 30, 2022 VIA EDGAR Ms. Megan Akst Ms. Kathleen Collins Division of Corporation Finance Office of Technology Securities and Exchange Commission 100 F Street, N.E. Washington, D.C. 20549 Re: CooTek (Cayman) Inc. (the “Company”) Form 20-F for the Fis

November 29, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2022 Commission File Number: 001-3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2022 Commission File Number: 001-38665 CooTEK (CAYMAN) INC. 9F, T2 Building, NO.16, Lane 399, Xinlong Road Shanghai, 201101 People’s Republic of China (Address of principal executive o

November 29, 2022 EX-99.1

CooTek Announces Appointment of New Auditor

Exhibit 99.1 CooTek Announces Appointment of New Auditor SHANGHAI, November 29, 2022 - CooTek (Cayman) Inc. (OTC: CTKYY) (“CooTek” or the “Company”), a global mobile internet company, today announced the appointment of Shandong Haoxin Certified Public Accountants Co., Ltd. (“Shandong Haoxin”) as its independent registered public accounting firm, effective November 29, 2022. The appointment of Shan

November 23, 2022 CORRESP

CooTek (Cayman) Inc.

CORRESP 1 filename1.htm CooTek (Cayman) Inc. 11F, T2, No.16 Lane 399 Xinlong Road, Minhang District Shanghai, 201101 People’s Republic of China November 23, 2022 VIA EDGAR Ms. Megan Akst Ms. Kathleen Collins Division of Corporation Finance Office of Technology Securities and Exchange Commission 100 F Street, N.E. Washington, D.C. 20549 Re: CooTek (Cayman) Inc. (the “Company”) Form 20-F for the Fis

October 27, 2022 CORRESP

* * *

CooTek (Cayman) Inc. 11F, T2, No.16 Lane 399 Xinlong Road, Minhang District Shanghai, 201101 People’s Republic of China October 27, 2022 VIA EDGAR Ms. Megan Akst Ms. Kathleen Collins Division of Corporation Finance Office of Technology Securities and Exchange Commission 100 F Street, N.E. Washington, D.C. 20549 Re: CooTek (Cayman) Inc. (the “Company”) Form 20-F for the Fiscal Year Ended December 3

September 22, 2022 CORRESP

CooTek (Cayman) Inc.

CORRESP 1 filename1.htm CooTek (Cayman) Inc. 11F, T2, No.16 Lane 399 Xinlong Road, Minhang District Shanghai, 201101 People’s Republic of China September 22, 2022 VIA EDGAR Ms. Megan Akst Ms. Kathleen Collins Division of Corporation Finance Office of Technology Securities and Exchange Commission 100 F Street, N.E. Washington, D.C. 20549 Re: CooTek (Cayman) Inc. (the “Company”) Form 20-F for the Fi

September 2, 2022 CORRESP

* * *

CORRESP 1 filename1.htm CooTek (Cayman) Inc. 11F, T2, No.16 Lane 399 Xinlong Road, Minhang District Shanghai, 201101 People’s Republic of China September 2, 2022 VIA EDGAR Ms. Megan Akst Ms. Kathleen Collins Division of Corporation Finance Office of Technology Securities and Exchange Commission 100 F Street, N.E. Washington, D.C. 20549 Re: CooTek (Cayman) Inc. (the “Company”) Form 20-F for the Fis

August 19, 2022 CORRESP

CooTek (Cayman) Inc.

CORRESP 1 filename1.htm CooTek (Cayman) Inc. 11F, T2, No.16 Lane 399 Xinlong Road, Minhang District Shanghai, 201101 People’s Republic of China August 19, 2022 VIA EDGAR Ms. Megan Akst Ms. Kathleen Collins Division of Corporation Finance Office of Technology Securities and Exchange Commission 100 F Street, N.E. Washington, D.C. 20549 Re: CooTek (Cayman) Inc. (the “Company”) Form 20-F for the Fisca

July 25, 2022 CORRESP

CooTek (Cayman) Inc.

CORRESP 1 filename1.htm CooTek (Cayman) Inc. 11F, T2, No.16 Lane 399 Xinlong Road, Minhang District Shanghai, 201101 People’s Republic of China July 25, 2022 VIA EDGAR Ms. Megan Akst Ms. Kathleen Collins Division of Corporation Finance Office of Technology Securities and Exchange Commission 100 F Street, N.E. Washington, D.C. 20549 Re: CooTek (Cayman) Inc. (the “Company”) Form 20-F for the Fiscal

June 6, 2022 EX-99.25

EX-99.25

NOTIFICATION OF THE REMOVAL FROM LISTING AND REGISTRATION OF THE STATED SECURITIES The New York Stock Exchange ("NYSE" or the "Exchange") hereby notifies the Securities and Exchange Commission (the "Commission") of its intention to remove the entire class of American Depositary Shares, each representing 650 Class A Ordinary Shares (the "ADSs") of CooTek (Cayman) Inc.

May 20, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2022 Commission File Number: 001-38665

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2022 Commission File Number: 001-38665 CooTEK (CAYMAN) INC. 9F, T2 Building, NO.16, Lane 399, Xinlong Road Shanghai, 201101 People?s Republic of China (Address of principal executive office

May 9, 2022 EX-99.1

AMENDMENT NO. 1 TO THE DEPOSIT AGREEMENT

AMENDMENT NO. 1 TO THE DEPOSIT AGREEMENT THIS AMENDMENT NO. 1 dated as of [?], 2022 (the ?Effective Date?) to the Deposit Agreement, dated as of September 27, 2018, (the ?Deposit Agreement?), by and among (i) CooTek (Cayman) Inc., a company incorporated under the laws of the Cayman Islands, with its principal executive office at 10-11F, T2, No.16, Lane 399, Xinlong Road, Minhang District, Shanghai

May 9, 2022 F-6 POS

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM F-6 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 FOR DEPOSITARY SHARES EVIDENCED BY AMERICAN DEPOSITARY RECEIPTS CooTek (Cayman)

As filed with the Securities and Exchange Commission on May 9, 2022 Registration No.

May 9, 2022 EX-99.2

Certification under Rule 466

Certification under Rule 466 The depositary, Deutsche Bank Trust Company Americas, represents and certifies the following: (1) That it previously had filed a registration statement on Form F-6 (CooTek (Cayman) Inc.

May 6, 2022 EX-99.1

CooTek Updates the Status under Holding Foreign Companies Accountable Act

Exhibit 99.1 CooTek Updates the Status under Holding Foreign Companies Accountable Act SHANGHAI?May 5, 2022? CooTek (Cayman) Inc. (NYSE: CTK) (?CooTek? or the ?Company?), a global mobile internet company, today updates its status under the Holding Foreign Companies Accountable Act (the ?HFCAA?). On May 4, 2022, in connection with its implementation of the HFCAA, the U.S. Securities and Exchange Co

May 6, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2022 Commission File Number: 001-38665

6-K 1 tm2214615d16k.htm FORM 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2022 Commission File Number: 001-38665 CooTEK (CAYMAN) INC. 9F, T2 Building, NO.16, Lane 399, Xinlong Road Shanghai, 201101 People’s Republic of China (Addr

April 29, 2022 EX-15.3

Consent of Maples and Calder (Hong Kong) LLP

EX-15.3 11 ctk-20211231xex15d3.htm EXHIBIT 15.3 Exhibit 15.3 Our refVSL/675748-000005/21894065v1 CooTek (Cayman) Inc. 9-11F, T2, No. 16, Lane 399, Xinlong Road Minhang District, Shanghai, 201101 People’s Republic of China 29 April 2022 Dear Sirs CooTek (Cayman) Inc. We have acted as legal advisers as to the laws of the Cayman Islands to CooTek (Cayman) Inc., an exempted company incorporated in the

April 29, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2022 Commission File Number: 001-3866

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2022 Commission File Number: 001-38665 CooTEK (CAYMAN) INC. 9F, T2 Building, NO.16, Lane 399, Xinlong Road Shanghai, 201101 People?s Republic of China (Address of principal executive offi

April 29, 2022 EX-15.1

Consent of Deloitte Touche Tohmatsu Certified Public Accountants LLP, an independent registered public accounting firm

EX-15.1 9 ctk-20211231xex15d1.htm EXHIBIT 15.1 Exhibit 15.1 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in the Registration Statements No. 333-229171 on Form S-8 and No. 333-251355 on Form F-3 of our report dated April 29, 2022, relating to the consolidated financial statements and financial statement schedule of CooTek (Cayman) Inc. and it

April 29, 2022 EX-2.5

Description of rights of each class of securities registered under Section 12 of the Securities Exchange Act of 1934

Exhibit 2.5 Description of rights of each class of securities registered under Section 12 of the Securities Exchange Act of 1934 (the ?Exchange Act?) Our Class A ordinary shares, par value $0.00001 per share, of CooTek (Cayman) Inc. (?we,? ?our,? ?our company,? or ?us?) are registered under Section 12(b) of the Exchange Act, and our American depositary shares (?ADSs?), each representing 50 Class A

April 29, 2022 EX-13.2

Chief Financial Officer Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 13.2 Certification by the Chief Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 In connection with the Annual Report of CooTek (Cayman) Inc. (the “Company”) on Form 20-F for the fiscal year ended December 31, 2021 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Robert Yi Cui, Chief Financial Officer of the Company, here

April 29, 2022 EX-15.2

Consent of JunHe LLP

Exhibit 15.2 26/F, HKRI Centre One, HKRI Taikoo Hui 288 Shimen Road (No.1) Shanghai 200041, P. R. China T: (86-21) 5298-5488 F: (86-21) 5298-5492 April 29, 2022 CooTek (Cayman) Inc. 9-11F, T2, No.16, Lane 399, Xinlong Road Minhang District Shanghai People's Republic of China Dear Sir/Madam: We hereby consent to the reference of our name under the headings "Item 3. Key Information—D. Risk Factors—R

April 29, 2022 EX-13.1

Chief Executive Officer Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 13.1 Certification by the Principal Executive Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 In connection with the Annual Report of CooTek (Cayman) Inc. (the “Company”) on Form 20-F for the fiscal year ended December 31, 2021 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Karl Kan Zhang, Principal Executive Officer of the Comp

April 29, 2022 EX-2.3

Deposit Agreement among the Registrant, the depositary and holders and beneficial holders of the American Depositary Shares dated September 27, 2018

Exhibit 2.3 Execution Version ? DEPOSIT AGREEMENT ? by and among COOTEK (CAYMAN) INC. as Issuer, DEUTSCHE BANK TRUST COMPANY AMERICAS as Depositary, AND THE HOLDERS AND BENEFICIAL OWNERS OF AMERICAN DEPOSITARY SHARES EVIDENCED BY AMERICAN DEPOSITARY RECEIPTS ISSUED HEREUNDER ? Dated as of September 27, 2018 ? ? DEPOSIT AGREEMENT DEPOSIT AGREEMENT, dated as of September 27, 2018, by and among (i) C

April 29, 2022 EX-99.1

CooTek Files Annual Report on Form 20-F for Fiscal Year 2021

Exhibit 99.1 CooTek Files Annual Report on Form 20-F for Fiscal Year 2021 SHANGHAI? April 29, 2022? CooTek (Cayman) Inc. (NYSE: CTK) (?CooTek? or the ?Company?), a global mobile internet company, today announced that it filed its annual report on Form 20-F for the fiscal year ended December 31, 2021 with the Securities and Exchange Commission (the ?SEC?) on April 29, 2022. The annual report can be

April 29, 2022 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) O

April 29, 2022 EX-12.1

Chief Executive Officer Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 12.1 Certification by the Principal Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Karl Kan Zhang, certify that: 1.I have reviewed this annual report on Form 20-F of CooTek (Cayman) Inc.; 2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in lig

April 29, 2022 EX-12.2

Chief Financial Officer Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 12.2 Certification by the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Robert Yi Cui, certify that: 1.I have reviewed this annual report on Form 20-F of CooTek (Cayman) Inc.; 2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of

April 29, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2022 Commission File Number: 001-3866

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2022 Commission File Number: 001-38665 CooTEK (CAYMAN) INC. 9F, T2 Building, NO.16, Lane 399, Xinlong Road Shanghai, 201101 People?s Republic of China (Address of principal executive offi

April 28, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2022 Commission File Number: 001-3866

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2022 Commission File Number: 001-38665 CooTEK (CAYMAN) INC. 9F, T2 Building, NO.16, Lane 399, Xinlong Road Shanghai, 201101 People?s Republic of China (Address of principal executive offi

April 28, 2022 EX-99.1

CooTek Announces Plan to Implement ADS Ratio Change

Exhibit 99.1 CooTek Announces Plan to Implement ADS Ratio Change SHANGHAI?April 28, 2022?CooTek (Cayman) Inc. (NYSE: CTK) (?CooTek? or the ?Company?), a global mobile internet company, today announced that it plans to change the ratio of its American Depositary Shares (?ADSs?) to its Class A ordinary shares (the ?ADS Ratio?), from the current ADS Ratio of one (1) ADS to fifty (50) Class A ordinary

April 21, 2022 6-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment NO.1 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2022 Commission File N

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment NO.1 To FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2022 Commission File Number: 001-38665 CooTEK (CAYMAN) INC. 9F, T2 Building, NO.16, Lane 399, Xinlong Road Shanghai, 201101 People?s Republic of China (Address of princi

March 21, 2022 F-6EF

UNITED STATES

As filed with the Securities and Exchange Commission on March 21, 2022 Registration No.

March 21, 2022 EX-99

Certification under Rule 466

Certification under Rule 466 The depositary, Deutsche Bank Trust Company Americas, represents and certifies the following: (1) That it previously had filed a registration statement on Form F-6 (CooTek (Cayman) Inc.

March 15, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2022 Commission File Number: 001-3866

6-K 1 tm229291d26k.htm FORM 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2022 Commission File Number: 001-38665 CooTEK (CAYMAN) INC. 9F, T2 Building, NO.16, Lane 399, Xinlong Road Shanghai, 201101 People’s Republic of China (Add

March 15, 2022 EX-99.1

CooTek Announces Share Purchase by Senior Management

Exhibit 99.1 CooTek Announces Share Purchase by Senior Management SHANGHAI, China? March 15, 2022? CooTek (Cayman) Inc. (NYSE: CTK) (?CooTek? or the ?Company?), a global mobile internet company, today announced that Mr. Karl Kan Zhang, CooTek?s Chairman of the Board of Directors and Chief Technology Officer has informed the Company of his intention to use his personal funds to purchase up to US$3

March 15, 2022 EX-99.1

CooTek Announces Fourth Quarter and Full Year 2021 Unaudited Results

Exhibit 99.1 CooTek Announces Fourth Quarter and Full Year 2021 Unaudited Results SHANGHAI, China, March 15, 2022 ? CooTek (Cayman) Inc. (NYSE: CTK) ("CooTek" or the "Company"), a global mobile internet company, today reported unaudited financial results for the fourth quarter ended December 31, 2021. Fourth Quarter 2021 Highlights ? Net revenues were US$53.0 million, a decrease of 48% from US$102

March 15, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2022 Commission File Number: 001-3866

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2022 Commission File Number: 001-38665 CooTEK (CAYMAN) INC. 9F, T2 Building, NO.16, Lane 399, Xinlong Road Shanghai, 201101 People?s Republic of China (Address of principal executive offi

January 21, 2022 SC 13G/A

CTK / CooTek (Cayman) Inc / Zhang Kan - SC 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2)* CooTek (Cayman) Inc. (Name of Issuer) Class A Ordinary Shares, par value $0.00001 per share (Title of Class of Securities) G2490L 109 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to de

January 21, 2022 SC 13G/A

CTK / CooTek (Cayman) Inc / Wang Jialiang - SC 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 3)* CooTek (Cayman) Inc. (Name of Issuer) Class A Ordinary Shares, par value $0.00001 per share (Title of Class of Securities) G2490L 109 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to de

January 21, 2022 SC 13G/A

CTK / CooTek (Cayman) Inc / Li Qiaoling - SC 13G/A Passive Investment

€ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2)* CooTek (Cayman) Inc. (Name of Issuer) Class A Ordinary Shares, par value $0.00001 per share (Title of Class of Securities) G2490L 109 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to

January 18, 2022 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2022 Commission File Number: 001-38

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2022 Commission File Number: 001-38665 CooTEK (CAYMAN) INC. 9F, T2 Building, NO.16, Lane 399, Xinlong Road Shanghai, 201101 People?s Republic of China (Address of principal executive of

January 18, 2022 EX-99.1

CooTek Announces Receipt of NYSE Non-Compliance Letter

Exhibit 99.1 CooTek Announces Receipt of NYSE Non-Compliance Letter SHANGHAI, Jan. 14, 2022 /PRNewswire/ ? CooTek (Cayman) Inc. (NYSE: CTK) (?CooTek? or the ?Company?), a global mobile internet company, today announced that it has received a letter (the ?Letter?) from the New York Stock Exchange (the ?NYSE?) dated January 5, 2022 and further e-mail communication on the same date, notifying the Com

December 14, 2021 EX-99.1

CooTek Announces Receipt of NYSE Non-compliance Letter Regarding ADS Trading Price

Exhibit 99.1 CooTek Announces Receipt of NYSE Non-compliance Letter Regarding ADS Trading Price SHANGHAI, China?December 13, 2021? CooTek (Cayman) Inc. (NYSE: CTK) ("CooTek" or the "Company"), a global mobile internet company, today announced that it has received a letter from the New York Stock Exchange (the ?NYSE?) dated December 6, 2021, notifying CooTek that it is below compliance standards du

December 14, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December 2021 Commission File Number: 001-3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December 2021 Commission File Number: 001-38665 CooTEK (CAYMAN) INC. 9F, T2 Building, NO.16, Lane 399, Xinlong Road Shanghai, 201101 People?s Republic of China (Address of principal executive o

December 9, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December 2021 Commission File Number: 001-3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December 2021 Commission File Number: 001-38665 CooTEK (CAYMAN) INC. 9F, T2 Building, NO.16, Lane 399, Xinlong Road Shanghai, 201101 People?s Republic of China (Address of principal executive o

December 9, 2021 EX-99.1

CooTek Announces Third Quarter 2021 Unaudited Results

Exhibit 99.1 CooTek Announces Third Quarter 2021 Unaudited Results SHANGHAI, China, December 8, 2021 ? CooTek (Cayman) Inc. (NYSE: CTK) ("CooTek" or the "Company"), a global mobile internet company, today reported unaudited financial results for the third quarter ended September 30, 2021. Third Quarter 2021 Highlights l Net revenues were US$51.1 million, a decrease of 52% from US$105.7 million dur

November 30, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2021 Commission File Number: 001-3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2021 Commission File Number: 001-38665 CooTEK (CAYMAN) INC. 9F, T2 Building, NO.16, Lane 399, Xinlong Road Shanghai, 201101 People?s Republic of China (Address of principal executive o

November 1, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2021 Commission File Number: 001-3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2021 Commission File Number: 001-38665 COOTEK (CAYMAN) INC. 9F, T2 Building, NO.16, Lane 399, Xinlong Road Shanghai, 201101 People?s Republic of China (Address of principal executive o

November 1, 2021 EX-10.1

Letter of Agreement to Amend and Restate the Convertible Note issued by the Company to YA II PN, LTD. on March 19, 2021 dated October 29, 2021 (incorporated by reference on Exhibit 10.1 from our Form 6-K (File No. 001-38665), filed on November 1, 2021

Exhibit 10.1 From: YA II PN, LTD ("YA II") To: CooTek (Cayman) Inc. (the "Company") October 29, 2021 RE: Convertible Note issued by the Company to YA II issued March 19, 2021 (the ?Note?) pursuant to that certain Securities Purchase Agreement entered into between the Company and YA II on March 19, 20201 (the ?SPA?). Dear Sirs, This letter shall set forth the written agreement of the Company and YA

September 10, 2021 EX-99.2

MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Exhibit 99.2 ? MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS This management's discussion and analysis is designed to provide you with a narrative explanation of our financial condition and results of operations for the six months ended June 30, 2020 and 2021. This section should be read in conjunction with our unaudited condensed consolidated financial stat

September 10, 2021 EX-99.1

INDEX TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

Table of Contents Exhibit 99.1 ? INDEX TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS ? ? Page ? ? Unaudited Condensed Consolidated Balance Sheets as of December 31, 2020 and June 30, 2021 F-2 ? ? Unaudited Condensed Consolidated Statements of Operations for the six months ended June 30, 2020 and 2021 F-3 ? ? Unaudited Condensed Consolidated Statements of Comprehensive Loss for the six m

September 10, 2021 EX-99.3

Risk Factors

? Exhibit 99.3 Risk Factors This section includes material updates in certain risks relating to us since the date of our annual report on Form 20-F for the year ended December 31, 2020, or the Annual Report, any of which we believe could materially and adversely affect our business, financial condition and results of operations. This section is a supplement to and should be read in conjunction wit

September 10, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of September 2021 Commission File Number: 001-

? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of September 2021 Commission File Number: 001-38665 COOTEK (CAYMAN) INC. 9F, T2 Building, NO.16, Lane 399, Xinlong Road Shanghai, 201101 People?s Republic of China (Address of principal execut

September 8, 2021 EX-99.1

CooTek Announces Second Quarter 2021 Unaudited Results

Exhibit 99.1 CooTek Announces Second Quarter 2021 Unaudited Results SHANGHAI, China, September 8, 2021 ? CooTek (Cayman) Inc. (NYSE: CTK) ("CooTek" or the "Company"), a global mobile internet company, today reported unaudited financial results for the second quarter ended June 30, 2021. Second Quarter 2021 Highlights l Net revenues were US$83.2 million, a decrease of 34% from US$126.4 million duri

September 8, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of September 2021 Commission File Number: 001-

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of September 2021 Commission File Number: 001-38665 CooTEK (CAYMAN) INC. 9F, T2 Building, NO.16, Lane 399, Xinlong Road Shanghai, 201101 People’s Republic of China (Address of principal executive

August 16, 2021 424B5

CooTek (Cayman) Inc. US$1,500,000 990,034 American Depositary Shares Representing 49,501,700 Class A Ordinary Shares

TABLE OF CONTENTS Filed Pursuant to Rule 424(b)(5)? Registration No. 333-251355? PROSPECTUS SUPPLEMENT (To Prospectus dated December 15, 2020) CooTek (Cayman) Inc. US$1,500,000 990,034 American Depositary Shares Representing 49,501,700 Class A Ordinary Shares ? Pursuant to this prospectus supplement and the accompanying prospectus, we are offering directly to Mercer Street Global Opportunity Fund

August 16, 2021 EX-10.1

Securities Purchase Agreement between the Registrant and Mercer Street Global Opportunity Fund LLC, dated August 16, 2021 (incorporated by reference on Exhibit 10.1 from our Form 6-K (File No. 001-38665), filed on August 16, 2021

Exhibit 10.1 SECURITIES PURCHASE AGREEMENT This Securities Purchase Agreement (this ?Agreement?) is dated as of August 16, 2021, between CooTek (Cayman) Inc., a company incorporated under the laws of the Cayman Islands (the ?Company?), and Mercer Street Global Opportunity Fund LLC (the ?Purchaser?). WHEREAS, subject to the terms and conditions set forth in this Agreement, the Company desires to is

August 16, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2021 Commission File Number: 001-386

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2021 Commission File Number: 001-38665 COOTEK (CAYMAN) INC. 9F, T2 Building, NO.16, Lane 399, Xinlong Road Shanghai, 201101 People?s Republic of China (Address of principal executive off

June 11, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2021 Commission File Number: 001-38665

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2021 Commission File Number: 001-38665 CooTEK (CAYMAN) INC. 9F, T2 Building, NO.16, Lane 399, Xinlong Road Shanghai, 201101 People?s Republic of China (Address of principal executive offic

June 3, 2021 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2021 Commission File Number: 001-38665

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2021 Commission File Number: 001-38665 CooTEK (CAYMAN) INC. 9F, T2 Building, NO.16, Lane 399, Xinlong Road Shanghai, 201101 People?s Republic of China (Address of principal executive offic

June 3, 2021 EX-99.1

CooTek Announces First Quarter 2021 Unaudited Results

Exhibit 99.1 CooTek Announces First Quarter 2021 Unaudited Results SHANGHAI, China, June 3, 2021 ? CooTek (Cayman) Inc. (NYSE: CTK) ("CooTek" or the "Company"), a global mobile internet company, today reported unaudited financial results for the first quarter ended March 31, 2021. First Quarter 2021 Highlights l Net revenue was US$81.6 million, a decrease of 24% from US$107.0 million during the sa

April 27, 2021 6-K

Current Report of Foreign Issuer - FORM 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2021 Commission File Number: 001-38665 CooTEK (CAYMAN) INC. 9-11F, No.16, Lane 399, Xinlong Road, Minhang District Shanghai, 201101 People?s Republic of China (Address of principal execut

April 27, 2021 EX-99.1

CooTek Files Annual Report on Form 20-F for Fiscal Year 2020

Exhibit 99.1 CooTek Files Annual Report on Form 20-F for Fiscal Year 2020 SHANGHAI, April 26, 2021 - CooTek (Cayman) Inc. (NYSE: CTK) ("CooTek" or the "Company"), a fast-growing global mobile internet company, today announced that it filed its annual report on Form 20-F for the fiscal year ended December 31, 2020 with the Securities and Exchange Commission (the ?SEC?) on April 26, 2021. The annual

April 26, 2021 20-F

- FORM 20-F

Table of Contents ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

April 26, 2021 EX-2.5

Description of Securities.

? Exhibit 2.5 Description of rights of each class of securities registered under Section 12 of the Securities Exchange Act of 1934 (the ?Exchange Act?) Our Class A ordinary shares, par value $0.00001 per share, of CooTek (Cayman) Inc. (?we,? ?our,? ?our company,? or ?us?) are registered under Section 12(b) of the Exchange Act, and our American depositary shares (?ADSs?), each representing 50 Class

April 26, 2021 EX-4.17

The form of Chuan Shan Jia Distribution Cooperation Agreement signed by certain VIEs and a schedule of all executed Chuan Shan Jia Distribution Cooperation Agreements adopting the same form in respect of each of these VIEs (incorporated by reference to Exhibit 4.17 from our annual report on Form 20-F (File No. 001-38665), filed with the Commission on April 26, 2021)

Exhibit 4.17 ? Chuan Shan Jia Distribution Cooperation Agreement ? ? ? ? Contract No.: ? Party A: Hubei **** Technology Co., Ltd. Address: ? Party B: [Name of Party B] Address: Legal representative: ? In accordance with the Contract Law of the People?s Republic of China, the Advertising Law of the People?s Republic of China, the Copyright Law of the People?s Republic of China and other relevant la

April 26, 2021 EX-13.1

Chief Executive Officer Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 13.1 Certification by the Principal Executive Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 In connection with the Annual Report of CooTek (Cayman) Inc. (the ?Company?) on Form 20-F for the fiscal year ended December 31, 2020 as filed with the Securities and Exchange Commission on the date hereof (the ?Report?), I, Karl Kan Zhang, Principal Executive Officer of the Comp

April 26, 2021 EX-12.1

Chief Executive Officer Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 12.1 Certification by the Principal Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Karl Kan Zhang, certify that: 1.I have reviewed this annual report on Form 20-F of CooTek (Cayman) Inc.; 2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in lig

April 26, 2021 EX-15.3

Consent of Maples and Calder (Hong Kong) LLP

Exhibit 15.3 CooTek (Cayman) Inc. 9-11F, No.16, Lane 399, Xinlong Road Minhang District Shanghai 201101 People’s Republic of China 26 April, 2021 Dear Sirs CooTek (Cayman) Inc. We have acted as legal advisers as to the laws of the Cayman Islands to CooTek (Cayman) Inc., an exempted company incorporated in the Cayman Islands with limited liability (the “Company”), in connection with the filing by t

April 26, 2021 EX-15.2

Consent of JunHe LLP

EXHIBIT 15.2 April 26, 2021 CooTek (Cayman) Inc. 9-11F, No.16, Lane 399, Xinlong Road Minhang District Shanghai People’s Republic of China Dear Sir/Madam: We hereby consent to the reference of our name under the headings “Item 3. Key Information—D. Risk Factors—Risks Related to Our Corporate Structure” and “Item 4. Information on the Company—C. Organizational Structure” in CooTek (Cayman) Inc.’s A

April 26, 2021 EX-13.2

Chief Financial Officer Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 13.2 Certification by the Chief Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 In connection with the Annual Report of CooTek (Cayman) Inc. (the “Company”) on Form 20-F for the fiscal year ended December 31, 2020 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Robert Yi Cui, Chief Financial Officer of the Company, here

April 26, 2021 EX-15.1

Consent of Deloitte Touche Tohmatsu Certified Public Accountants LLP, an independent registered public accounting firm

EX-15.1 9 ctk-20201231xex15d1.htm EXHIBIT 15.1 Exhibit 15.1 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in the Registration Statements No. 333-229171 on Form S-8 and No. 333-251355 on Form F-3 of our report dated April 26, 2021, relating to the consolidated financial statements and financial statement schedule of CooTek (Cayman) Inc. and it

April 26, 2021 EX-12.2

Chief Financial Officer Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 12.2 Certification by the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Robert Yi Cui, certify that: 1.I have reviewed this annual report on Form 20-F of CooTek (Cayman) Inc.; 2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of

March 25, 2021 EX-99.1

CooTek Announces Fourth Quarter and Full Year 2020 Unaudited Results

Exhibit 99.1 CooTek Announces Fourth Quarter and Full Year 2020 Unaudited Results SHANGHAI, China, March 25, 2021 — CooTek (Cayman) Inc. (NYSE: CTK) (“CooTek” or the “Company”), a fast-growing global mobile internet company, today reported unaudited financial results for the fourth quarter and full year ended December 31, 2020. Fourth Quarter 2020 Highlights · Net revenue was US$102.4 million, an

March 25, 2021 6-K

Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2021 Commission File Number: 001-38665 COOTEK (CAYMAN) INC. 9-11F, No.16, Lane 399, Xinlong Road, Minhang District Shanghai, 201101 People?s Republic of China (Address of principal execut

March 19, 2021 424B5

CooTek (Cayman) Inc. US$20,000,000 5% Convertible Note Due 2022 Convertible into ordinary shares represented by American Depositary Shares

Use these links to rapidly review the document TABLE OF CONTENTS TABLE OF CONTENTS Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No.

March 19, 2021 EX-10.2

Convertible Note issued by the Registrant to YA II PN, LTD. dated March 19, 2021 (incorporated by reference to Exhibit 10.2 from our Form 6-K (File No. 001-38665), filed on March 19, 2021)

Exhibit 10.2 COOTEK (CAYMAN) INC. CONVERTIBLE NOTE Principal Amount: $20,000,000 Note Issuance Date: March 19, 2021 Note Number: CTK- 2 FOR VALUE RECEIVED, COOTEK (CAYMAN) INC., a Cayman Island corporation (the ?Company?), hereby promises to pay to the order of YA II PN, Ltd., or its registered assigns (the ?Holder?) the amount set out above as the Principal Amount (as reduced pursuant to the term

March 19, 2021 EX-10.1

Securities Purchase Agreement between the Registrant and YA II PN, LTD. dated March 19, 2021 (incorporated by reference to Exhibit 10.1 from our Form 6-K (File No. 001-38665), filed on March 19, 2021)

EX-10.1 2 a20-375319ex10d1.htm EX-10.1 Exhibit 10.1 SECURITIES PURCHASE AGREEMENT THIS SECURITIES PURCHASE AGREEMENT (this “Agreement”), dated as of March 19, 2021, is between COOTEK (CAYMAN) INC., a company incorporated under the laws of the Cayman Islands, with principal executive offices located at 9-11 Floors, No.16, Lane 399, Xinlong Road, Minhang District, Shanghai 201101, Peoples Republic o

March 19, 2021 6-K

Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2021 Commission File Number: 001-38665 COOTEK (CAYMAN) INC. 9F, T2 Building, NO.16, Lane 399, Xinlong Road Shanghai, 201101 People?s Republic of China (Address of principal executive offi

February 16, 2021 SC 13G/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Rule 13d—102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO §240.13d-1(b), (c) AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO §240.13d-2. (Amendment

SC 13G/A 1 tm216465d7sc13ga.htm SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Rule 13d—102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO §240.13d-1(b), (c) AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO §240.13d-2. (Amendment No. 1)* CooTek (Cayman) Inc. (Name of Issuer) Class A Ordinary Shares, par value US$0.00001 per share (Title

February 10, 2021 SC 13G/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 2)* CooTek (Cayman) Inc. (Name of Issuer) Class A Ordinary shares, par value US$0.00001 per share (Title o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 2)* CooTek (Cayman) Inc. (Name of Issuer) Class A Ordinary shares, par value US$0.00001 per share (Title of Class of Securities) G2490L 109 (CUSIP Number) December 31, 2020 (Date of Event which Requires Filing of this Statement) Check the appropriate box t

January 27, 2021 SC 13G/A

UNITED STATES

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2)* CooTek (Cayman) Inc. (Name of Issuer) Class A Ordinary Shares, par value $0.00001 per share (Title of Class of Securities) G2490L 109 (CUSIP Number) December 31, 2020 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to de

January 25, 2021 EX-10.1

STANDBY EQUITY DISTRIBUTION AGREEMENT

Exhibit 10.1 STANDBY EQUITY DISTRIBUTION AGREEMENT THIS STANDBY EQUITY DISTRIBUTION AGREEMENT dated as of January 25, 2021 (this “Agreement”) is made by and between YA II PN, LTD., a Cayman Islands exempt limited partnership (the “Investor”), and COOTEK (CAYMAN) INC., a company incorporated under the laws of the Cayman Islands, with principal executive offices located at 9-11 Floors, No.16, Lane 3

January 25, 2021 424B2

CooTek (Cayman) Inc. Up to US$20,000,000 American Depositary Shares Representing Class A Ordinary Shares

Use these links to rapidly review the document TABLE OF CONTENTS TABLE OF CONTENTS Table of Contents Filed Pursuant to Rule 424(b)(2) Registration No.

January 25, 2021 6-K

Current Report of Foreign Issuer - 6-K

6-K 1 a20-3753186k.htm 6-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2021 Commission File Number: 001-38665 COOTEK (CAYMAN) INC. 9F, T2 Building, NO.16, Lane 399, Xinlong Road Shanghai, 201101 People’s Republic of China (Addres

January 25, 2021 EX-99.1

CooTek Announces Entering into a Combined Financing Package

EX-99.1 3 a20-375318ex99d1.htm EX-99.1 Exhibit 99.1 CooTek Announces Entering into a Combined Financing Package SHANGHAI, Jan 25, 2021 — CooTek (Cayman) Inc. (NYSE: CTK) (“CooTek” or the “Company”), a fast-growing global mobile internet company, today announced that it entered into a combined financing package with YA II PN, Ltd., a Cayman Islands exempt limited partnership managed by Yorkville Ad

January 19, 2021 6-K

Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of January 2021 Commission File Number: 001-38665 COOTEK (CAYMAN) INC. 9F, T2 Building, NO.16, Lane 399, Xinlong Road Shanghai, 201101 People’s Republic of China (Address of principal executive of

January 19, 2021 EX-10.2

Convertible Note issued by the Registrant to YA II PN, LTD. dated January 19, 2021 (incorporated by reference to Exhibit 10.2 from our Form 6-K (File No. 001-38665), filed on January 19, 2021)

Exhibit 10.2 COOTEK (CAYMAN) INC. CONVERTIBLE NOTE Principal Amount: $10,000,000 Note Issuance Date: January 19, 2021 Note Number: CTK-1 FOR VALUE RECEIVED, COOTEK (CAYMAN) INC., a Cayman Island corporation (the “Company”), hereby promises to pay to the order of YA II PN, Ltd., or its registered assigns (the “Holder”) the amount set out above as the Principal Amount (as reduced pursuant to the ter

January 19, 2021 EX-10.1

Securities Purchase Agreement between the Registrant and YA II PN, LTD. dated January 19, 2021 (incorporated by reference to Exhibit 10.1 from our Form 6-K (File No. 001-38665), filed on January 19, 2021)

Exhibit 10.1 SECURITIES PURCHASE AGREEMENT THIS SECURITIES PURCHASE AGREEMENT (this “Agreement”), dated as of January 19, 2021, is between COOTEK (CAYMAN) INC., a company incorporated under the laws of the Cayman Islands, with principal executive offices located at 9-11 Floors, No.16, Lane 399, Xinlong Road, Minhang District, Shanghai 201101, Peoples Republic of China (the “Company”), and the inve

January 19, 2021 424B5

CooTek (Cayman) Inc. US$10,000,000 5% Convertible Note Due 2022 Convertible into ordinary shares represented by American Depositary Shares

Use these links to rapidly review the document TABLE OF CONTENTS TABLE OF CONTENTS Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No.

December 30, 2020 CORRESP

-

CooTek (Cayman) Inc. 9-11F, No.16, Lane 399, Xinlong Road Minhang District, Shanghai, 201101 People’s Republic of China +86 21 6485-6352 December 30, 2020 VIA EDGAR Mr. Matthew Crispino Ms. Jan Woo Division of Corporation Finance Office of Technology U.S. Securities and Exchange Commission 100 F Street, N.E. Washington, D.C. 20549 Re: CooTek (Cayman) Inc. (CIK No. 0001734262) Registration Statemen

December 15, 2020 EX-4.5

Form of Indenture

Exhibit 4.5 CooTek (Cayman) Inc. INDENTURE Dated as of [ ] [ ] TABLE OF CONTENTS Page ARTICLE I DEFINITIONS AND INCORPORATION BY REFERENCE 2 Section 1.1 Definitions 2 Section 1.2 Other Definitions 5 Section 1.3 Incorporation by Reference of Trust Indenture Act 6 Section 1.4 Rules of Construction 6 ARTICLE II THE SECURITIES 6 Section 2.1 Issuable in Series 6 Section 2.2 Establishment of Terms of Se

December 15, 2020 EX-99.4

CooTek Announces Third Quarter 2020 Unaudited Results

Exhibit 99.4 CooTek Announces Third Quarter 2020 Unaudited Results SHANGHAI, China, December 15, 2020 – CooTek (Cayman) Inc. (NYSE: CTK) ("CooTek" or the "Company"), a fast-growing global mobile internet company, today reported unaudited financial results for the third quarter ended September 30, 2020. Third Quarter 2020 Highlights ● Net revenue was US$105.7 million, an increase of 238% from US$31

December 15, 2020 EX-99.3

Risk Factors

Exhibit 99.3 Risk Factors This section includes material updates in certain risks relating to us since the date of our Annual Report, any of which we believe could materially and adversely affect our business, financial condition and results of operations. This section is a supplement to and should be read in conjunction with the section titled “Risk Factors” included in the Annual Report. We have

December 15, 2020 EX-99.2

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Exhibit 99.2 MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS This management’s discussion and analysis is designed to provide you with a narrative explanation of our financial condition and results of operations for the nine months ended September 30, 2019 and 2020. This section should be read in conjunction with our unaudited condensed consolidated financial

December 15, 2020 F-3

Form F-3 (File No. 333-251355),

Use these links to rapidly review the document TABLE OF CONTENTS Table of Contents As filed with the Securities and Exchange Commission on December 15, 2020 Registration No.

December 15, 2020 EX-99.1

INDEX TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

Table of Contents Exhibit 99.1 INDEX TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS Page Unaudited Condensed Consolidated Balance Sheets as of December 31, 2019 and September 30, 2020 F-2 Unaudited Condensed Consolidated Statements of Operations for the nine months ended September 30, 2019 and 2020 F-3 Unaudited Condensed Consolidated Statements of Comprehensive Loss for the nine months

December 15, 2020 6-K

Current Report of Foreign Issuer - FORM 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December 2020 Commission File Number: 001-38665 COOTEK (CAYMAN) INC. 9F, T2 Building, NO.16, Lane 399, Xinlong Road Shanghai, 201101 People’s Republic of China (Address of principal executive o

November 18, 2020 6-K

Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2020 Commission File Number: 001-38665 COOTEK (CAYMAN) INC. 9F, T2 Building, NO.16, Lane 399, Xinlong Road Shanghai, 201101 People’s Republic of China (Address of principal executive o

November 18, 2020 EX-99.1

CooTek (Cayman) Inc. to Hold Annual General Meeting on December 17, 2020

Exhibit 99.1 CooTek (Cayman) Inc. to Hold Annual General Meeting on December 17, 2020 SHANGHAI, China, November 18, 2020 — CooTek (Cayman) Inc. (“CooTek” or the “Company”) (NYSE: CTK), a fast-growing global mobile internet company, today announced that it will hold its annual general meeting of shareholders at 9F, Building T2, No.16, Lane 399, Xinlong Road, Shanghai, 201101, China on December 17,

November 18, 2020 EX-99.2

COOTEK (CAYMAN) INC. (Incorporated in the Cayman Islands with limited liability) (NYSE Ticker: CTK) NOTICE OF ANNUAL GENERAL MEETING to be held on December 17, 2020

Exhibit 99.2 COOTEK (CAYMAN) INC. (Incorporated in the Cayman Islands with limited liability) (NYSE Ticker: CTK) NOTICE OF ANNUAL GENERAL MEETING to be held on December 17, 2020 NOTICE IS HEREBY GIVEN that an annual general meeting (the “AGM”) of CooTek (Cayman) Inc. (the “Company”) will be held at 9F, Building T2, No.16, Lane 399, Xinlong Road, Shanghai, 201101, China on December 17, 2020 at 20:0

August 18, 2020 6-K

Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2020 Commission File Number: 001-38665 COOTEK (CAYMAN) INC. 9F, T2 Building, NO.16, Lane 399, Xinlong Road Shanghai, 201101 People’s Republic of China (Address of principal executive off

August 18, 2020 EX-99.1

CooTek Announces Second Quarter 2020 Unaudited Results and Appointment of Chief Financial Officer

Exhibit 99.1 CooTek Announces Second Quarter 2020 Unaudited Results and Appointment of Chief Financial Officer SHANGHAI, China, August 18, 2020 — CooTek (Cayman) Inc. (NYSE: CTK) (“CooTek” or the “Company”), a fast-growing global mobile internet company, today reported unaudited financial results for the second quarter ended June 30, 2020. Second Quarter 2020 Highlights · Net revenue was US$126.4

May 18, 2020 EX-99.1

CooTek Announces First Quarter 2020 Unaudited Results

Exhibit 99.1 CooTek Announces First Quarter 2020 Unaudited Results SHANGHAI, China, May 15, 2020 — CooTek (Cayman) Inc. (NYSE: CTK) (“CooTek” or the “Company”), a fast-growing global mobile internet company, today reported unaudited financial results for the first quarter ended March 31, 2020. First Quarter 2020 Highlights · Net revenue was US$107.0 million, an increase of 167% from US$40.0 millio

May 18, 2020 6-K

Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2020 Commission File Number: 001-38665 COOTEK (CAYMAN) INC. 9F, T2 Building, NO.16, Lane 399, Xinlong Road Shanghai, 201101 People’s Republic of China (Address of principal executive office

April 21, 2020 6-K

CTK / CooTek (Cayman) Inc. 6-K - Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2020 Commission File Number: 001-38665 COOTEK (CAYMAN) INC. 9F, T2 Building, NO.16, Lane 399, Xinlong Road Shanghai, 201101 People’s Republic of China (Address of principal executive offi

April 21, 2020 EX-99.1

CooTek Files Annual Report on Form 20-F for Fiscal Year 2019

Exhibit 99.1 CooTek Files Annual Report on Form 20-F for Fiscal Year 2019 SHANGHAI, China, April 20, 2020 /PRNewswire/ — CooTek (Cayman) Inc. (NYSE: CTK) (“CooTek” or the “Company”), a fast-growing global mobile internet company, today announced that it filed its annual report on Form 20-F for the fiscal year ended December 31, 2019 with the U.S. Securities and Exchange Commission (“SEC”) on April

April 20, 2020 EX-4.6

Executed form of exclusive purchase option agreements among Shanghai Chule (CooTek) Information Technology Co., Ltd. and each shareholder of the VIEs of the Registrant, as currently in effect, and a schedule of all executed exclusive purchase option agreements adopting the same form in respect of each of the VIEs of the Registrant (incorporated by reference to Exhibit 4.6 from our annual report on Form 20-F (File No. 001-38665) filed with the Commission on April 20, 2020).

Exhibit 4.6 Exclusive Purchase Option Agreement This Exclusive Purchase Option Agreement (“this Agreement”) is executed by and among the Parties below as of [Execution Date], in Shanghai, the People’s Republic of China (“China”): Party A: Shanghai Chu Le Information Technology Co., Ltd., a wholly foreign owned enterprise duly registered in China, with its address at ; Party B: [Name of VIE Shareho

April 20, 2020 EX-4.10

The form spouse consent letter signed by each spouse of the shareholders of the VIEs of the Registrant, as currently in effect (incorporated by reference to Exhibit 4.10 from our annual report on Form 20-F (File No. 001-38665) filed with the Commission on April 20, 2020).

Exhibit 4.10 Spousal Consent The undersigned, People’s Republic of China (“China” or the “PRC”) citizen with PRC Identification Card No.: , is the lawful spouse of , a PRC citizen with PRC Identification Card No.: . I hereby agree to the execution of the Loan Agreement entered into with Shanghai Chu Le Information Technology Co., Ltd. (the “WFOE”) by on , and the following documents (together with

April 20, 2020 EX-2.5

Description of Securities

Exhibit 2.5 Description of rights of each class of securities registered under Section 12 of the Securities Exchange Act of 1934 (the “Exchange Act”) Our Class A ordinary shares, par value $0.00001 per share, of CooTek (Cayman) Inc. (“we,” “our,” “our company,” or “us”) are registered under Section 12(b) of the Exchange Act, and our American depositary shares (“ADSs”), each representing 50 Class A

April 20, 2020 EX-12.1

Chief Executive Officer Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 12.1 Certification by the Principal Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Karl Kan Zhang, certify that: 1. I have reviewed this annual report on Form 20-F of CooTek (Cayman) Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in l

April 20, 2020 EX-15.1

Consent of Deloitte Touche Tohmatsu Certified Public Accountants LLP, an independent registered public accounting firm

Exhibit 15.1 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in the Registration Statement No. 333-229171 on Form S-8 of our report dated April 20, 2020, relating to the financial statements of CooTek (Cayman) Inc., appearing in this Annual Report on Form 20-F of CooTek (Cayman) Inc. for the year ended December 31, 2019. /s/ Deloitte Touche Toh

April 20, 2020 EX-4.9

Executed form of loan agreement between Shanghai Chule (CooTek) Information Technology Co., Ltd. and each shareholder of the VIEs of the Registrant, as currently in effect, and a schedule of all executed loan agreements adopting the same form in respect of each of the VIEs of the Registrant (incorporated by reference to Exhibit 4.9 from our annual report on Form 20-F (File No. 001-38665) filed with the Commission on April 20, 2020).

Exhibit 4.9 Loan Agreement Loan Agreement This Loan Agreement (“this Agreement”) is made and entered into by and between the parties below as of [Execution Date] in Shanghai, the People’s Republic of China (“China”): (1) Shanghai Chu Le Information Technology Co., Ltd. (“Lender”), a wholly foreign owned enterprise with its address at ***. (2) [Name of VIE Shareholder] (“Borrower”), a citizen of Ch

April 20, 2020 6-K

CTK / CooTek (Cayman) Inc. 6-K - Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2020 Commission File Number: 001-38665 COOTEK (CAYMAN) INC. 9F, T2 Building, NO.16, Lane 399, Xinlong Road Shanghai, 201101 People’s Republic of China (Address of principal executive offi

April 20, 2020 EX-4.17

The form of Ad Network Distribution Agreement between Beijing Youzhuju Network Technology Co., Ltd. and certain VIEs of the Registrant and a schedule of all executed Ad Network Distribution Agreements adopting the same form in respect of each of these VIEs of the Registrant

Exhibit 4.17 Ad Network Distribution Agreement Contract No.: Party A: Beijing Youzhuju Network Technology Co., Ltd. Address: Legal representative: Party B: [Name of Party B] Address: Legal representative: In accordance with the Contract Law of the People’s Republic of China, the Advertising Law of the People’s Republic of China, the Copyright Law of the People’s Republic of China and other relevan

April 20, 2020 EX-12.2

Chief Financial Officer Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 12.2 Certification by the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Jean Liqin Zhang, certify that: 1. I have reviewed this annual report on Form 20-F of CooTek (Cayman) Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in lig

April 20, 2020 EX-4.5

Executed form of exclusive business cooperation agreement between Shanghai Chule (CooTek) Information Technology Co., Ltd. and a VIE of the Registrant, as currently in effect, and a schedule of all executed exclusive business cooperation agreements adopting the same form in respect of each of the VIEs of the Registrant (incorporated by reference to Exhibit 4.5 from our annual report on Form 20-F (File No. 001-38665) filed with the Commission on April 20, 2020).

Exhibit 4.5 Exclusive Business Cooperation Agreement Exclusive Business Cooperation Agreement This Exclusive Business Cooperation Agreement (“this Agreement”) is made and entered into by and between the following Parties on [Execution Date] in Shanghai, the People’s Republic of China (“China” or “PRC”): Party A: Shanghai Chu Le Information Technology Co., Ltd. Address: Party B: [Name of VIE] Addre

April 20, 2020 EX-13.2

Chief Financial Officer Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 13.2 Certification by the Chief Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 In connection with the Annual Report of CooTek (Cayman) Inc. (the “Company”) on Form 20-F for the fiscal year ended December 31, 2019 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Jean Liqin Zhang, Chief Financial Officer of the Company, h

April 20, 2020 EX-15.3

Consent of Maples and Calder (Hong Kong) LLP

Exhibit 15.3 Our ref VSL/675748-000005/16465393v1 CooTek (Cayman) Inc. 9-11F, No.16, Lane 399, Xinlong Road Minhang District Shanghai People’s Republic of China 20 April, 2020 Dear Sirs CooTek (Cayman) Inc. We have acted as legal advisers as to the laws of the Cayman Islands to CooTek (Cayman) Inc., an exempted company incorporated in the Cayman Islands with limited liability (the “Company”), in c

April 20, 2020 20-F

our annual report on Form 20-F for the fiscal year ended December 31, 2019 filed with the SEC on April 20, 2020 (File No. 001-38665);

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) o REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) O

April 20, 2020 EX-4.7

Executed form of equity pledge agreements among Shanghai Chule (CooTek) Information Technology Co., Ltd. and each shareholder of the VIEs of the Registrant, as currently in effect, and a schedule of all equity pledge agreement adopting the same form in respect of each of the VIEs of the Registrant (incorporated by reference to Exhibit 4.7 from our annual report on Form 20-F (File No. 001-38665) filed with the Commission on April 20, 2020).

Exhibit 4.7 Equity Pledge Agreement This Equity Pledge Agreement (“this Agreement”) has been executed by and among the following parties on [Execution Date] in Shanghai, the People’s Republic of China (the “China”): Pledgee: Shanghai Chu Le Information Technology Co., Ltd. (“Pledgee” or “Party A”) Address: Pledgor: [Name of VIE Shareholder] (“Pledgor” or “Party B”) ID No.: Party C: [Name of VIE] A

April 20, 2020 EX-15.2

Consent of Junhe LLP

EXHIBIT 15.2 April 20, 2020 CooTek (Cayman) Inc. 9-11F, No.16, Lane 399, Xinlong Road Minhang District Shanghai People’s Republic of China Dear Sir/Madam: We hereby consent to the reference of our name under the headings “Item 3. Key Information—D. Risk Factors—Risks Related to Our Corporate Structure” and “Item 4. Information on the Company—C. Organizational Structure” in CooTek (Cayman) Inc.’s A

April 20, 2020 EX-4.8

Executed form of powers of attorney granted by each shareholder of the VIEs of the Registrant, as currently in effect, and a schedule of all powers of attorney adopting the same form in respect of each of VIEs of the Registrant (incorporated by reference to Exhibit 4.8 from our annual report on Form 20-F (File No. 001-38665) filed with the Commission on April 20, 2020).

Exhibit 4.8 Power of Attorney I, [Name of VIE Shareholder], a Chinese citizen with Chinese Identification Card No. :***, and a holder of [Percentage of Shareholder’s Equity Interests in the VIE]% of the entire registered capital in [Name of VIE] (“My Shareholding”), hereby irrevocably authorize Shanghai Chu Le Information Technology Co., Ltd. (the “WFOE”) to exercise the following rights relating

April 20, 2020 EX-13.1

Chief Executive Officer Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 13.1 Certification by the Principal Executive Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 In connection with the Annual Report of CooTek (Cayman) Inc. (the “Company”) on Form 20-F for the fiscal year ended December 31, 2019 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Karl Kan Zhang, Principal Executive Officer of the Comp

March 12, 2020 6-K

CTK / CooTek (Cayman) Inc. 6-K - Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2020 Commission File Number: 001-38665 COOTEK (CAYMAN) INC. 9F, T2 Building, NO.16, Lane 399, Xinlong Road Shanghai, 201101 People’s Republic of China (Address of principal executive offi

March 12, 2020 6-K

CTK / CooTek (Cayman) Inc. 6-K - Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2020 Commission File Number: 001-38665 COOTEK (CAYMAN) INC. 9F, T2 Building, NO.16, Lane 399, Xinlong Road Shanghai, 201101 People’s Republic of China (Address of principal executive offi

March 12, 2020 EX-99.1

CooTek Announces Fourth Quarter and Full Year 2019 Unaudited Results

Exhibit 99.1 CooTek Announces Fourth Quarter and Full Year 2019 Unaudited Results SHANGHAI, China, March 12, 2020 — CooTek (Cayman) Inc. (NYSE: CTK) (“CooTek” or the “Company”), a fast-growing global mobile internet company, today reported unaudited financial results for the fourth quarter and full year ended December 31, 2019. Fourth Quarter 2019 Highlights · Net revenue was US$69.0 million, an i

February 14, 2020 SC 13G/A

CTK / CooTek (Cayman) Inc. / Qiming Corporate GP II, Ltd. - FORM SC 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 1)* CooTek (Cayman) Inc. (Name of Issuer) Class A Ordinary shares, par value US$0.00001 per share (Title of Class of Securities) G2490L 109 (CUSIP Number) December 31, 2019 (Date of Event which Requires Filing of this Statement) Check the appropriate box t

February 10, 2020 SC 13G/A

CTK / CooTek (Cayman) Inc. / Zhang Kan - SC 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* CooTek (Cayman) Inc. (Name of Issuer) Class A Ordinary Shares, par value $0.00001 per share (Title of Class of Securities) G2490L 109 (CUSIP Number) December 31, 2019 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to de

February 10, 2020 EX-99.A

JOINT FILING AGREEMENT

Exhibit A JOINT FILING AGREEMENT In accordance with Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree to the joint filing with all other Reporting Persons (as such term is defined in the Schedule 13G referred to below) on behalf of each of them of a statement on Schedule 13G (including amendments thereto) with respect to the ordinary shares, par value $0.

February 10, 2020 EX-99.A

JOINT FILING AGREEMENT

Exhibit A JOINT FILING AGREEMENT In accordance with Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree to the joint filing with all other Reporting Persons (as such term is defined in the Schedule 13G referred to below) on behalf of each of them of a statement on Schedule 13G (including amendments thereto) with respect to the ordinary shares, par value $0.

February 10, 2020 SC 13G/A

CTK / CooTek (Cayman) Inc. / Li Qiaoling - SC 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No.1)* CooTek (Cayman) Inc. (Name of Issuer) Class A Ordinary Shares, par value $0.00001 per share (Title of Class of Securities) G2490L 109 (CUSIP Number) December 31, 2019 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to des

February 10, 2020 SC 13G/A

CTK / CooTek (Cayman) Inc. / Wang Jialiang - SC 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No.1)* CooTek (Cayman) Inc. (Name of Issuer) Class A Ordinary Shares, par value $0.00001 per share (Title of Class of Securities) G2490L 109 (CUSIP Number) December 31, 2019 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to des

February 10, 2020 EX-99.A

JOINT FILING AGREEMENT

Exhibit A JOINT FILING AGREEMENT In accordance with Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree to the joint filing with all other Reporting Persons (as such term is defined in the Schedule 13G referred to below) on behalf of each of them of a statement on Schedule 13G (including amendments thereto) with respect to the ordinary shares, par value $0.

December 13, 2019 EX-99.1

CooTek Raises Fourth Quarter 2019 Guidance on Stronger than Expected Ads Platform Growth

Exhibit 99.1 CooTek Raises Fourth Quarter 2019 Guidance on Stronger than Expected Ads Platform Growth Shanghai, China, December 12, 2019 — CooTek (Cayman) Inc. (NYSE: CTK) (“CooTek” or the “Company”), a fast-growing global mobile internet company, today announced it is revising and raising its revenue guidance for the fourth quarter of 2019. The Company now expects net revenue for the fourth quart

December 13, 2019 6-K

CTK / CooTek (Cayman) Inc. 6-K - Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December 2019 Commission File Number: 001-38665 COOTEK (CAYMAN) INC. 9F, T2 Building, NO.16, Lane 399, Xinlong Road Shanghai, 201101 People’s Republic of China (Address of principal executive o

November 18, 2019 EX-99.1

CooTek Announces Third Quarter 2019 Unaudited Results

Exhibit 99.1 CooTek Announces Third Quarter 2019 Unaudited Results SHANGHAI, China, November 18, 2019 — CooTek (Cayman) Inc. (NYSE: CTK) (“CooTek” or the “Company”), a fast-growing global mobile internet company, today reported unaudited financial results for the third quarter ended September 30, 2019. Third Quarter 2019 Financial Highlights · Net revenue was US$31.3 million, a decrease of 15% fro

November 18, 2019 6-K

CTK / CooTek (Cayman) Inc. 6-K - Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2019 Commission File Number: 001-38665 COOTEK (CAYMAN) INC. 9F, T2 Building, NO.16, Lane 399, Xinlong Road Shanghai, 201101 People’s Republic of China (Address of principal executive o

August 20, 2019 EX-99.1

CooTek Announces Second Quarter 2019 Unaudited Results

Exhibit 99.1 CooTek Announces Second Quarter 2019 Unaudited Results SHANGHAI, August 20, 2019 — CooTek (Cayman) Inc. (NYSE: CTK) (“CooTek” or the “Company”), a fast-growing global mobile internet company, today reported unaudited financial results for the second quarter ended June 30, 2019. Second Quarter 2019 Financial Highlights · Net revenue was US$37.6 million, an increase of 33% from US$28.4

August 20, 2019 6-K

CTK / CooTek (Cayman) Inc. 6-K - Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2019 Commission File Number: 001-38665 COOTEK (CAYMAN) INC. Building 7, No. 2007 Hongmei Road, Xuhui District Shanghai, 201103 People’s Republic of China (Address of principal executive

August 2, 2019 6-K

CTK / CooTek (Cayman) Inc. 6-K - Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of August 2019 Commission File Number: 001-38665 COOTEK (CAYMAN) INC. Building 7, No. 2007 Hongmei Road, Xuhui District Shanghai, 201103 People’s Republic of China (Address of principal executive

July 18, 2019 EX-99.1

2

Exhibit 99.1 CooTek InvestorRoom CooTek Provides Updates on Access to Google Play and Google Admob SANTA CLARA, Calif., July 17, 2019 /PRNewswire/ — CooTek (NYSE: CTK) (“CooTek” or the “Company”), a fast-growing global mobile internet company, today announced that it is aware that some of its global portfolio of apps have been temporarily disabled by Google from the Google Play Store and Google Ad

July 18, 2019 6-K

CTK / CooTek (Cayman) Inc. 6-K - Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of July 2019 Commission File Number: 001-38665 COOTEK (CAYMAN) INC. Building 7, No. 2007 Hongmei Road, Xuhui District Shanghai, 201103 People’s Republic of China (Address of principal executive of

June 3, 2019 EX-99.1

CooTek Announces First Quarter 2019 Unaudited Results

Exhibit 99.1 CooTek Announces First Quarter 2019 Unaudited Results SHANGHAI, China, June 3, 2019 — CooTek (Cayman) Inc. (NYSE: CTK) (“CooTek” or the “Company”), a fast-growing global mobile internet company, today reported unaudited financial results for the first quarter ended March 31, 2019. First Quarter 2019 Financial Highlights · Net revenue was US$40.0 million, an increase of 83% from US$21.

June 3, 2019 6-K

CTK / CooTek (Cayman) Inc. 6-K - Current Report of Foreign Issuer - 6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of June 2019 Commission File Number: 001-38665 COOTEK (CAYMAN) INC. Building 7, No. 2007 Hongmei Road, Xuhui District Shanghai, 201103 People’s Republic of China (Address of principal executive of

April 16, 2019 EX-99.1

CooTek Files Annual Report on Form 20-F for Fiscal Year 2018

Exhibit 99.1 CooTek Files Annual Report on Form 20-F for Fiscal Year 2018 SHANGHAI, April 15, 2019 /PRNewswire/ — CooTek (Cayman) Inc. (NYSE: CTK) (“CooTek” or the “Company”), a fast-growing global mobile internet company, today announced that it filed its annual report on Form 20-F for the fiscal year ended December 31, 2018 with the U.S. Securities and Exchange Commission (“SEC”) on April 15, 20

April 16, 2019 6-K

CTK / CooTek (Cayman) Inc. 6-K (Current Report of Foreign Issuer)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2019 Commission File Number: 001-38665 COOTEK (CAYMAN) INC. Building 7, No. 2007 Hongmei Road, Xuhui District Shanghai, 201103 People’s Republic of China (Address of principal executive o

April 15, 2019 EX-4.16

The form of MoPub Terms of Service between Twitter, Inc. and the Registrant (incorporated by reference to Exhibit 4.16 from our annual report on Form 20-F (File No. 001-38665), filed with the Commission on April 15, 2019)

Exhibit 4.16 MoPub Terms of Service This MoPub Terms of Service (“Agreement”) between You, a Publisher Partner, and Twitter, Inc., successor in interest to MoPub, Inc., on behalf of itself and its affiliates, including Twitter International Company (together, “MoPub”) constitutes the terms and conditions for Your use of the MoPub Marketplace service (the “Marketplace”) and/or the MoPub ad serving

April 15, 2019 EX-15.3

Consent of Maples and Calder (Hong Kong) LLP

EX-15.3 10 a19-62461ex15d3.htm EX-15.3 Exhibit 15.3 Our ref VSL/675748-000005/14553515v1 CooTek (Cayman) Inc. Building 7, No. 2007 Hongmei Road, Xuhui District Shanghai, 201103 People’s Republic of China April 15, 2019 Dear Sirs CooTek (Cayman) Inc. We have acted as legal advisers as to the laws of the Cayman Islands to CooTek (Cayman) Inc., an exempted company incorporated in the Cayman Islands w

April 15, 2019 EX-12.1

Chief Executive Officer Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 12.1 Certification by the Principal Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Karl Kan Zhang, certify that: 1. I have reviewed this annual report on Form 20-F of CooTek (Cayman) Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in l

April 15, 2019 EX-13.2

Chief Financial Officer Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 13.2 Certification by the Chief Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 In connection with the Annual Report of CooTek (Cayman) Inc. (the “Company”) on Form 20-F for the fiscal year ended December 31, 2018 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Jean Liqin Zhang, Chief Financial Officer of the Company, h

April 15, 2019 20-F

CTK / CooTek (Cayman) Inc. 20-F

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) o REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2018 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) O

April 15, 2019 EX-12.2

Chief Financial Officer Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 12.2 Certification by the Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Jean Liqin Zhang, certify that: 1. I have reviewed this annual report on Form 20-F of CooTek (Cayman) Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in lig

April 15, 2019 EX-15.1

Consent of Deloitte Touche Tohmatsu Certified Public Accountants LLP, an independent registered public accounting firm

Exhibit 15.1 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in Registration Statement No. 333-229171 on Form S-8 of our report dated April 15, 2019, relating to the financial statements of CooTek (Cayman) Inc., its subsidiaries and its variable interest entities (“the Group”), appearing in this Annual Report on Form 20-F of CooTek (Cayman) Inc

April 15, 2019 EX-13.1

Chief Executive Officer Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 13.1 Certification by the Principal Executive Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 In connection with the Annual Report of CooTek (Cayman) Inc. (the “Company”) on Form 20-F for the fiscal year ended December 31, 2018 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Karl Kan Zhang, Principal Executive Officer of the Comp

April 15, 2019 EX-15.2

Consent of Junhe LLP

EXHIBIT 15.2 April 15, 2019 CooTek (Cayman) Inc. Building 7, No. 2007 Hongmei Road, Xuhui District Shanghai, 201103 People’s Republic of China Dear Sir/Madam: We hereby consent to the reference of our name under the headings “Item 3. Key Information—D. Risk Factors—Risks Related to Our Corporate Structure” and “Item 4. Information on the Company—C. Organizational Structure” in CooTek (Cayman) Inc.

March 8, 2019 6-K

CTK / CooTek (Cayman) Inc. 6-K (Current Report of Foreign Issuer)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of March 2019 Commission File Number: 001-38665 COOTEK (CAYMAN) INC. Building 7, No. 2007 Hongmei Road, Xuhui District Shanghai, 201103 People’s Republic of China (Address of principal executive o

March 8, 2019 EX-99.1

CooTek Announces Fourth Quarter and Full Year 2018 Unaudited Results

Exhibit 99.1 CooTek Announces Fourth Quarter and Full Year 2018 Unaudited Results SHANGHAI, China, March 7, 2019 — CooTek (Cayman) Inc. (NYSE: CTK) (“CooTek” or the “Company”), a fast-growing global mobile internet company, today reported unaudited financial results for the fourth quarter and full year ended December 31, 2018. Fourth Quarter 2018 Financial Highlights · Net revenue was US$47.0 mill

February 14, 2019 SC 13G

CTK / CooTek (Cayman) Inc. / Sig Asia Investment, Lllp - SC 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Rule 13d—102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO §240.13d-1(b), (c) AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO §240.13d-2. (Amendment No. )* CooTek (Cayman) Inc. (Name of Issuer) Class A Ordinary Shares, par value US$0.00001 per share (Title of Class of Securities) 21718L102** (CUSIP

February 14, 2019 SC 13G

CTK / CooTek (Cayman) Inc. / Snp China Enterprises Ltd - SC 13G Passive Investment

SC 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Rule 13d-102) Information Statement Pursuant to Rules 13d-1 and 13d-2 Under the Securities Exchange Act of 1934 (Amendment No. )* CooTek (Cayman) Inc. (Name of Issuer) Class A Ordinary Shares, par value $0.00001 per share (Title of Class of Securities) G2490L 109** (CUSIP Number) December 31, 2018 (Date of

February 13, 2019 SC 13G

CTK / CooTek (Cayman) Inc. / Qiming Corporate GP II, Ltd. - FORM SC 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* CooTek (Cayman) Inc. (Name of Issuer) Class A Ordinary shares, par value US$0.00001 per share (Title of Class of Securities) G2490L 109 (CUSIP Number) December 31, 2018 (Date of Event which Requires Filing of this Statement) Check the appropriate box to d

January 25, 2019 EX-99.A

JOINT FILING AGREEMENT

Exhibit A JOINT FILING AGREEMENT In accordance with Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree to the joint filing with all other Reporting Persons (as such term is defined in the Schedule 13G referred to below) on behalf of each of them of a statement on Schedule 13G (including amendments thereto) with respect to the ordinary shares, par value $0.

January 25, 2019 SC 13G

CTK / CooTek (Cayman) Inc. / Wang Jialiang - SC 13G Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 CooTek (Cayman) Inc. (Name of Issuer) Class A Ordinary Shares, par value $0.00001 per share (Title of Class of Securities) G2490L 109 (CUSIP Number) December 31, 2018 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to whic

January 25, 2019 EX-99.A

JOINT FILING AGREEMENT

Exhibit A JOINT FILING AGREEMENT In accordance with Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree to the joint filing with all other Reporting Persons (as such term is defined in the Schedule 13G referred to below) on behalf of each of them of a statement on Schedule 13G (including amendments thereto) with respect to the ordinary shares, par value $0.

January 25, 2019 SC 13G

CTK / CooTek (Cayman) Inc. / Li Qiaoling - SC 13G Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 CooTek (Cayman) Inc. (Name of Issuer) Class A Ordinary Shares, par value $0.00001 per share (Title of Class of Securities) G2490L 109 (CUSIP Number) December 31, 2018 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to whic

January 25, 2019 SC 13G

CTK / CooTek (Cayman) Inc. / Zhang Kan - SC 13G Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 CooTek (Cayman) Inc. (Name of Issuer) Class A Ordinary Shares, par value $0.00001 per share (Title of Class of Securities) G2490L 109 (CUSIP Number) December 31, 2018 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to whic

January 25, 2019 EX-99.A

JOINT FILING AGREEMENT

Exhibit A JOINT FILING AGREEMENT In accordance with Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree to the joint filing with all other Reporting Persons (as such term is defined in the Schedule 13G referred to below) on behalf of each of them of a statement on Schedule 13G (including amendments thereto) with respect to the ordinary shares, par value $0.

January 9, 2019 S-8

CTK / CooTek (Cayman) Inc. S-8

As filed with the Securities and Exchange Commission on January 9, 2019 Registration No.

November 27, 2018 EX-99.1

CooTek Announces up to US$15 million Share Repurchase Program

Exhibit 99.1 CooTek Announces up to US$15 million Share Repurchase Program SHANGHAI, China, November 26, 2018 — CooTek (Cayman) Inc. (NYSE: CTK) (“CooTek” or the “Company”), a fast-growing global mobile internet company, today announced that the board of directors of the Company has approved a share repurchase program whereby CooTek is authorized to repurchase its class A ordinary shares in the fo

November 27, 2018 6-K

CTK / CooTek (Cayman) Inc. 6-K (Current Report of Foreign Issuer)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2018 Commission File Number: 001-38665 COOTEK (CAYMAN) INC. Building 7, No. 2007 Hongmei Road, Xuhui District Shanghai, 201103 People’s Republic of China (Address of principal executiv

November 14, 2018 EX-99.1

CooTek Announces Third Quarter 2018 Unaudited Financial Results

Exhibit 99.1 CooTek Announces Third Quarter 2018 Unaudited Financial Results SHANGHAI, China, November 14, 2018 — CooTek (Cayman) Inc. (NYSE: CTK) (“CooTek” or the “Company”), a fast-growing global mobile internet company, today reported unaudited financial results for the quarter ended September 30, 2018. Third Quarter 2018 Financial Highlights · Net revenue was US$36.8 million, an increase of 30

November 14, 2018 6-K

CTK / CooTek (Cayman) Inc. 6-K (Current Report of Foreign Issuer)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of November 2018 Commission File Number: 001-38665 COOTEK (CAYMAN) INC. Building 7, No. 2007 Hongmei Road, Xuhui District Shanghai, 201103 People’s Republic of China (Address of principal executiv

September 28, 2018 424B4

4,350,000 American Depositary Shares CooTek (Cayman) Inc. Representing 217,500,000 Class A Ordinary Shares

Use these links to rapidly review the document TABLE OF CONTENTS INDEX TO CONSOLIDATED FINANCIAL STATEMENTS Table of Contents Filed Pursuant to Rule 424(b)(4) Registration No.

September 26, 2018 CORRESP

CTK / CooTek (Cayman) Inc. CORRESP

Credit Suisse Securities (USA) LLC Eleven Madison Avenue 24th Floor New York, NY 10010 Merrill Lynch, Pierce, Fenner & Smith Incorporated One Bryant Park New York, NY 10036 Citigroup Global Markets Inc.

September 25, 2018 F-1/A

As filed with the Securities and Exchange Commission on September 25, 2018

QuickLinks - Click here to rapidly navigate through this document As filed with the Securities and Exchange Commission on September 25, 2018 Registration No.

September 25, 2018 EX-1.1

Form of Underwriting Agreement

Exhibit 1.1 4,350,000American Depository Shares Each Representing 50 Class A Ordinary Shares, Par Value US$0.00001 Per Share COOTEK (CAYMAN) INC. UNDERWRITING AGREEMENT [September 27], 2018 Credit Suisse Securities (USA) LLC Eleven Madison Avenue 24th Floor New York, NY 10010 Merrill Lynch, Pierce, Fenner & Smith Incorporated One Bryant Park New York, NY 10036 Citigroup Global Markets Inc. 388 Gre

September 25, 2018 CORRESP

CTK / CooTek (Cayman) Inc. CORRESP

COOTEK (CAYMAN) INC. September 25, 2018 VIA EDGAR Ms. Barbara C. Jacobs Mr. Jeffrey Kauten Ms. Kathleen Collins Ms. Rebekah Lindsey Division of Corporation Finance Securities and Exchange Commission 100 F Street, N.E. Washington, D.C. 20549 Re: CooTek (Cayman) Inc. (CIK No. 0001734262) Registration Statement on Form F-1 (Registration No. 333-226867) Registration Statement on Form 8-A (Registration

September 25, 2018 CORRESP

CTK / CooTek (Cayman) Inc. CORRESP

Credit Suisse Securities (USA) LLC Eleven Madison Avenue 24th Floor New York, NY 10010 Merrill Lynch, Pierce, Fenner & Smith Incorporated One Bryant Park New York, NY 10036 Citigroup Global Markets Inc.

September 19, 2018 EX-4

DEPOSIT AGREEMENT

DEPOSIT AGREEMENT by and among COOTEK (CAYMAN) INC. as Issuer, DEUTSCHE BANK TRUST COMPANY AMERICAS as Depositary, AND THE HOLDERS AND BENEFICIAL OWNERS OF AMERICAN DEPOSITARY SHARES EVIDENCED BY AMERICAN DEPOSITARY RECEIPTS ISSUED HEREUNDER Dated as of [●], 2018 DEPOSIT AGREEMENT DEPOSIT AGREEMENT, dated as of [●], 2018, by and among (i) CooTek (Cayman) Inc., a company incorporated in the Cayman

September 19, 2018 F-6

AUKUF / AMS AG F-6

As filed with the Securities and Exchange Commission on September 19, 2018 Registration No.

September 19, 2018 EX-4.2

Specimen Certificate for Class A Ordinary Shares of the Registrant (incorporated by reference to Exhibit 4.2 from our registration statement on Form F-1 (File No. 333-226867), as amended, initially filed with the Commission on August 16, 2018)

Exhibit 4.2 CooTek (Cayman) Inc. Number Class A Ordinary Share(s) Incorporated under the laws of the Cayman Islands Share capital is US$150,000 divided into (i) 13,750,000,000 Class A Ordinary Shares of a par value of US$0.00001 each, (ii) 250,000,000 Class B Ordinary Shares of a par value of US$0.00001 each and (iii) 1,000,000,000 Shares of a par value of US$0.00001 each of such class or classes

September 19, 2018 EX-4.3

Form of Deposit Agreement among the Registrant, the depositary and holders and beneficial holders of the American Depositary Shares (incorporated by reference to Exhibit 4.3 from our registration statement on Form F-1 (File No. 333-226867), as amended, initially filed with the Commission on August 16, 2018)

Exhibit 4.3 DEPOSIT AGREEMENT by and among COOTEK (CAYMAN) INC. as Issuer, DEUTSCHE BANK TRUST COMPANY AMERICAS as Depositary, AND THE HOLDERS AND BENEFICIAL OWNERS OF AMERICAN DEPOSITARY SHARES EVIDENCED BY AMERICAN DEPOSITARY RECEIPTS ISSUED HEREUNDER Dated as of [?], 2018 ARTICLE I. DEFINITIONS 1 SECTION 1.1 ?Affiliate? 1 SECTION 1.2 ?Agent? 1 SECTION 1.3 ?American Depositary Share(s)? and ?ADS

September 19, 2018 8-A12B

the description of the securities contained in our registration statement on Form 8-A filed on September 19, 2018 (File No. 001-38665) pursuant to Section 12 of the Exchange Act, together with all amendments and reports filed for the purpose of updating that description; and

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-A FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 CooTek (Cayman) Inc. (Exact name of registrant as specified in its charter) Cayman Islands Not Applicable (State of incorporation or organization) (I.R.S. Employer Identification No.) Building 7, N

September 19, 2018 F-1/A

As filed with the Securities and Exchange Commission on September 19, 2018

Use these links to rapidly review the document TABLE OF CONTENTS INDEX TO CONSOLIDATED FINANCIAL STATEMENTS Table of Contents As filed with the Securities and Exchange Commission on September 19, 2018 Registration No.

September 19, 2018 CORRESP

CTK / CooTek (Cayman) Inc. CORRESP

SKADDEN, ARPS, SLATE, MEAGHER & FLOM PARTNERS CHRISTOPHER W. BETTS WILL H. CAI ^ GEOFFREY CHAN * ANDREW L. FOSTER * BRADLEY A. KLEIN ˜ CHI T. STEVE KWOK * EDWARD H.P. LAM ¨* HAIPING LI * RORY MCALPINE ¨ CLIVE W. ROUGH ¨ JONATHAN B. STONE * ^ (ALSO ADMITTED IN CALIFORNIA) ¨ (ALSO ADMITTED IN ENGLAND & WALES) ˜ (ALSO ADMITTED IN ILLINOIS) * (ALSO ADMITTED IN NEW YORK) REGISTERED FOREIGN LAWYER Z. JU

August 16, 2018 EX-21.1

Subsidiaries of the Registrant

Exhibit 21.1 List of Principal Subsidiaries and Variable Interest Entities of the Registrant Subsidiary Place of Incorporation TouchPal HK Co., Limited Hong Kong CooTek Hong Kong Limited Hong Kong TouchPal, Inc United States Variable Interest Entity Place of Incorporation Shanghai Chule (CooTek) Information Technology Co., Ltd. People?s Republic of China Shanghai Chubao (CooTek) Information Techno

August 16, 2018 EX-10.2

2018 Share Incentive Plan(incorporated by reference to Exhibit 10.2 from our registration statement on Form F-1 (File No. 333-226867), as amended, initially filed with the Commission on August 16, 2018)

Exhibit 10.2 COOTEK (CAYMAN) INC 2018 SHARE INCENTIVE PLAN ARTICLE 1 PURPOSE The purpose of this 2018 Share Incentive Plan (the ?Plan?) is to promote the success and enhance the value of CooTek (Cayman) Inc., an exempted company formed under the laws of the Cayman Islands (the ?Company?), by linking the personal interests of the Directors, Employees, and Consultants to those of the Company?s share

August 16, 2018 F-1

Form F-1 (File No. 333-226867).

Use these links to rapidly review the document TABLE OF CONTENTS INDEX TO CONSOLIDATED FINANCIAL STATEMENTS Table of Contents As filed with the Securities and Exchange Commission on August 16, 2018 Registration No.

August 16, 2018 EX-10.12

The form of audience network terms between Facebook, Inc. and Facebook Ireland Limited and us (incorporated by reference to Exhibit 10.12 from our registration statement on Form F-1 (File No. 333-226867), as amended, initially filed with the Commission on August 16, 2018)

Exhibit 10.12 Audience Network Terms These Audience Network Terms (?Audience Network Terms?) are made and entered into by and between Facebook, Inc. and Facebook Ireland Limited (?FB?) and the person or entity accepting these Audience Network Terms (?Publisher?). These Audience Network Terms are deemed accepted and agreed to by Publisher on the date that Publisher indicates its assent to these Aud

August 16, 2018 EX-10.7

Amended and Restated Equity Pledge Agreements among Shanghai Chule (CooTek) Information Technology Co., Ltd. and each shareholder of Chubao (CooTek) Information Technology Co., Ltd dated October 30, 2012

Exhibit 10.7 Amended and Restated Equity Pledge Agreement Amended and Restated Equity Pledge Agreement This Amended and Restated Equity Pledge Agreement (?this Agreement?) has been executed by and among the following parties on October 30, 2012 in Shanghai, the People?s Republic of China (the ?China?): Pledgee: Shanghai Chu Le Information Technology Co., Ltd. (?Pledgee? or ?Party A?) Address: ***

August 16, 2018 EX-3.2

Seventh Amended and Restated Memorandum and Articles of Incorporation of the Registrant (incorporated by reference to Exhibit 3.2 from our registration statement on Form F-1, as amended, initially filed on August 16, 2018 (File No. 333- 226867))

Exhibit 3.2 THE COMPANIES LAW (2018 REVISION) OF THE CAYMAN ISLANDS COMPANY LIMITED BY SHARES SEVENTH AMENDED AND RESTATED MEMORANDUM OF ASSOCIATION OF COOTEK (CAYMAN) INC. (adopted by a Special Resolution passed on August 8, 2018 and effective immediately prior to the completion of the initial public offering of the Company?s American Depositary Shares representing its Class A Ordinary Shares) 1.

August 16, 2018 EX-4.4

Fifth Amended and Restated Shareholders Agreement between the Registrant and other parties therein dated January 10, 2017 (incorporated by reference to Exhibit 4.4 from our registration statement on Form F-1 (File No. 333-226867), as amended, initially filed with the Commission on August 16, 2018)

Exhibit 4.4 Execution Copy COOTEK (CAYMAN) INC. FIFTH AMENDED AND RESTATED SHAREHOLDERS? AGREEMENT DATED AS OF JANUARY 10, 2017 TABLE OF CONTENTS 1 Interpretation 4 1.1 Definitions 4 1.2 Interpretation 11 1.3 Jurisdiction of IPO 11 2 Demand Registration 12 2.1 Registration Rights 12 2.2 Registration on Form F-3 or Form S-3 13 2.3 Right of Deferral 13 2.4 Underwritten Offerings 14 2.5 Restrictions

August 16, 2018 EX-10.11

Series D-1 Preferred Share Purchase Agreement between the Registrant and other parties dated January 10, 2017 (incorporated by reference to Exhibit 10.11 from our registration statement on Form F-1 (File No. 333-226867), as amended, initially filed with the Commission on August 16, 2018)

Exhibit 10.11 Execution Copy SERIES D-1 PREFERRED SHARE PURCHASE AGREEMENT SERIES D-1 PREFERRED SHARE PURCHASE AGREEMENT THIS SHARE PURCHASE AGREEMENT (this ?Agreement?) is entered into as of January 10, 2017, by and among: (1) CooTek (Cayman) Inc., a company duly incorporated and validly existing under the Laws of the Cayman Islands (the ?Company?), (2) CooTek HongKong Limited, a company duly inc

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