AMBI.WS / Ambipar Emergency Response - Equity Warrant - تصريحات هيئة الأوراق المالية والبورصات، التقرير السنوي، بيان الوكيل

استجابة أمبيبار للطوارئ - ضمان حقوق الملكية
US ˙ NYSEAM

الإحصائيات الأساسية
CIK 1937441
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 Ambipar Emergency Response - Equity Warrant
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.
September 3, 2025 EX-10.23

INDEMNIFICATION AGREEMENT

Exhibit 10.23 INDEMNIFICATION AGREEMENT THIS INDEMNIFICATION AGREEMENT (this “Agreement”) is made as of June 24, 2025, by and between Ambipar Emergency Response, a Cayman Islands exempted company incorporated with limited liability (the “Company”), and Marco Antonio Zanini, a director of the Company (the “Indemnitee”). WHEREAS, the Indemnitee has agreed to serve as a director of the Company and in

September 3, 2025 EX-10.22

INDEMNIFICATION AGREEMENT

Exhibit 10.22 INDEMNIFICATION AGREEMENT THIS INDEMNIFICATION AGREEMENT (this “Agreement”) is made as of June 24, 2025, by and between Ambipar Emergency Response, a Cayman Islands exempted company incorporated with limited liability (the “Company”), and Pedro Petersen, an executive officer of the Company (the “Indemnitee”). WHEREAS, the Indemnitee has agreed to serve as an executive officer of the

September 3, 2025 POS AM

As filed with the U.S. Securities and Exchange Commission on September 3, 2025

As filed with the U.S. Securities and Exchange Commission on September 3, 2025 Registration No. 333-270493 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 4 TO FORM F-3 ON FORM F-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 AMBIPAR EMERGENCY RESPONSE (Exact Name of Registrant as Specified in Its Charter) Cayman Islands 4955 Not Appl

September 3, 2025 EX-10.21

INDEMNIFICATION AGREEMENT

Exhibit 10.21 INDEMNIFICATION AGREEMENT THIS INDEMNIFICATION AGREEMENT (this “Agreement”) is made as of June 24, 2025, by and between Ambipar Emergency Response, a Cayman Islands exempted company incorporated with limited liability (the “Company”), and Ricardo Chagas, an executive officer of the Company (the “Indemnitee”). WHEREAS, the Indemnitee has agreed to serve as an executive officer of the

August 18, 2025 EX-99.1

Var. 2Q25 2Q24

Exhibit 99.1 AMBIPAR PARTICIPAÇÕES E EMPREENDIMENTOS S.A. - EARNINGS RELEASE 2Q25 RESPONSE SEGMENT 2Q25 HIGHLIGHTS Net Revenue (R$ MM) 2Q24 1Q25 2Q25 6M24 6M25 Var. 2Q25 2Q24 Var. 2Q25 1Q25 Var. 6M25 6M24 Net revenue 740.5 811.0 738.8 1,419.6 1,549.8 (0.2%) (8.9%) 9.2% Brazil 359.1 344.3 385.3 653.5 729.5 7.3% 11.9% 11.6% North America 296.5 358.4 256.5 600.1 614.9 (13.5%) (28.4%) 2.5% Europe 38.0

August 18, 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 August, 2025 Commission File Number: 001-41

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, 2025 Commission File Number: 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Brazi

June 24, 2025 EX-11.2

POLICIES AND PROCEDURES FOR TRADING IN SECURITIES OF AMBIPAR EMERGENCY RESPONSE BY ACCESS INSIDERS

Exhibit 11.2 POLICIES AND PROCEDURES FOR TRADING IN SECURITIES OF AMBIPAR EMERGENCY RESPONSE BY ACCESS INSIDERS Ambipar Emergency Response and its entities directly or indirectly controlled (collectively, the “Company”) are committed to fair trading and the SEC and the New York Stock Exchange rules and regulations (including those applicable to the NYSE American). To avoid any situation where an A

June 24, 2025 EX-11.1

TERM OF RESPONSIBILITY AND COMMITMENT

Exhibits 11.1 CODE OF CONDUCT & COMPLIANCE AMBIPAR EMERGENCY RESPONSE Exhibits 11.1 1.MESSAGE FROM THE MANAGEMENT Ambipar Response Group seeks to constantly improve its Compliance Program, in order to achieve the highest standards of integrity, transparency and reliability in all its business and relationships. The Code of Conduct applies to all employees, suppliers, administrators, representative

June 24, 2025 EX-12.1

CERTIFICATION BY THE CHIEF EXECUTIVE OFFICER PURSUANT TO RULES 13a-14(a) AND 15d-14(a) AS ADOPTED UNDER SECTION 302 OF THE SARBANES-OXLEY ACT

Exhibit 12.1 CERTIFICATION BY THE CHIEF EXECUTIVE OFFICER PURSUANT TO RULES 13a-14(a) AND 15d-14(a) AS ADOPTED UNDER SECTION 302 OF THE SARBANES-OXLEY ACT I, Ricardo Chagas, certify that: 1. I have reviewed this annual report on Form 20-F for the year ended December 31, 2024 of Ambipar Emergency Response (the “Company”); 2. Based on my knowledge, this report does not contain any untrue statement o

June 24, 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: 001-4163

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: 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Brazil,

June 24, 2025 EX-12.2

CERTIFICATION BY THE CHIEF FINANCIAL OFFICER PURSUANT TO RULES 13a-14(a) AND 15d-14(a) AS ADOPTED UNDER SECTION 302 OF THE SARBANES-OXLEY ACT

Exhibit 12.2 CERTIFICATION BY THE CHIEF FINANCIAL OFFICER PURSUANT TO RULES 13a-14(a) AND 15d-14(a) AS ADOPTED UNDER SECTION 302 OF THE SARBANES-OXLEY ACT I, Pedro Petersen, certify that: 1. I have reviewed this annual report on Form 20-F for the year ended December 31, 2024 of Ambipar Emergency Response (the “Company”); 2. Based on my knowledge, this report does not contain any untrue statement o

June 24, 2025 EX-4.16

AMBIPAR EMERGENCY RESPONSE 2023 OMNIBUS INCENTIVE PLAN (AS AMENDED AND RESTATED ON JULY 22, 2024)

Exhibit 4.16 AMBIPAR EMERGENCY RESPONSE 2023 OMNIBUS INCENTIVE PLAN (AS AMENDED AND RESTATED ON JULY 22, 2024) 1.Purpose. The purpose of the Ambipar Emergency Response 2023 Omnibus Incentive Plan is to provide a means through which the Company and the other members of the Company Group may attract and retain key personnel, and to provide a means whereby directors, officers, employees, consultants,

June 24, 2025 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECUR

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXC

June 24, 2025 EX-13.1

CERTIFICATION BY THE CHIEF EXECUTIVE OFFICER PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT

Exhibit 13.1 CERTIFICATION BY THE CHIEF EXECUTIVE OFFICER PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT Pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code), the undersigned officer of Ambipar Emergency Response (the “Company”), does hereby certify, to such o

June 24, 2025 EX-13.2

CERTIFICATION BY THE CHIEF FINANCIAL OFFICER PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT

Exhibit 13.2 CERTIFICATION BY THE CHIEF FINANCIAL OFFICER PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT Pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code), the undersigned officer of Ambipar Emergency Response (the “Company”), does hereby certify, to such o

June 10, 2025 EX-99.1

Ambipar Emergency Response Announces Management Reorganization

Exhibit 99.1 Ambipar Emergency Response Announces Management Reorganization São Paulo, Brazil – June 10, 2025 – Ambipar Emergency Response (NYSE American: AMBI) (“Ambipar Response or the “Company”) is pleased to announce a strategic management reorganization, effective as of today. We are proud to announce the following appointments: •Mr. Ricardo Chagas has been appointed as the Chief Executive Of

June 10, 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 001-41638

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 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Brazil,

May 23, 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 May, 2025 Commission File Number 001-41638

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, 2025 Commission File Number 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Brazil, 0

May 23, 2025 EX-99.1

AMBIPAR EMERGENCY RESPONSE REPORTS ON NYSE AMERICAN NONCOMPLIANCE NOTICE

Exihibit 99.1 AMBIPAR EMERGENCY RESPONSE REPORTS ON NYSE AMERICAN NONCOMPLIANCE NOTICE São Paulo, Brazil – May 23, 2025 – Ambipar Emergency Response (NYSE American: AMBI) (“Ambipar Response or the “Company”) announced today that on May 16, 2025, the Company received a written notice from NYSE Regulation (the “NYSE Notice”) stating that the Company is not in compliance with the continued listing st

May 21, 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 May, 2025 Commission File Number 001-41638

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, 2025 Commission File Number 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Brazil, 0

May 21, 2025 EX-99.1

AMBIPAR PARTICIPAÇÕES E EMPREENDIMENTOS S.A. - EARNINGS RELEASE 1Q25

AMBIPAR PARTICIPAÇÕES E EMPREENDIMENTOS S.A. - EARNINGS RELEASE 1Q25 RESPONSE SEGMENT 1Q25 HIGHLIGHTS Net Revenue (R$ MM) 1Q24 4Q24 1Q25 Var. 1Q25 1Q24 Var. 1Q25 4Q24 Net revenue 679.1 835.4 811.0 19.4 % (2.9 %) Brazil 294.5 346.3 344.3 16.9 % (0.6 %) North America 303.6 377.7 358.4 18.1 % (5.1 %) Europe 40.1 62.8 63.0 56.8 % 0.3 % LatAm (Ex Brazil) 40.9 48.6 45.4 11.0 % (6.6 %) Net revenue reache

April 30, 2025 NT 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 12b-25 NOTIFICATION OF LATE FILING

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 12b-25 NOTIFICATION OF LATE FILING SEC File Number 001-41638 CUSIP Number G02532 102 G02532 110 (Check One): ☐ Form 10-K ☒ Form 20-F ☐ Form 11-K ☐ Form 10-Q ☐ Form 10-D ☐ Form N-CEN ☐ Form N-CSR For Period Ended: December 31, 2024 ☐ Transition Report on Form 10-K ☐ Transition Report on Form 20-F ☐ Transition Report on For

April 2, 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 April, 2025 Commission File Number 001-4163

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, 2025 Commission File Number 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Brazil,

April 2, 2025 EX-99.1

AMBIPAR PARTICIPAÇÕES E EMPREENDIMENTOS S.A. - EARNINGS RELEASE 4Q24 & 2024

Exhibit 99.1 AMBIPAR PARTICIPAÇÕES E EMPREENDIMENTOS S.A. - EARNINGS RELEASE 4Q24 & 2024 RESPONSE SEGMENT 4Q24 & 2024 HIGHLIGHTS Net Revenue (R$ MM) 4Q23 3Q24 4Q24 2023 2024 Var. 4Q24 4Q23 Var. 4Q24 3Q24 Var. 2024 2023 Net revenue 740.5 1,011.6 862.2 2,590.0 3,293.4 16.4% (14.8%) 27.2% Brazil 285.4 503.2 346.3 936.2 1,503.0 21.3% (31.2%) 60.5% North America 378.3 401.0 404.5 1,314.6 1,405.6 6.9% 0

February 20, 2025 CORRESP

AMBIPAR EMERGENCY RESPONSE Avenida Angelica No. 2346, 5th Floor São Paulo, SP – Brazil 01228-200

AMBIPAR EMERGENCY RESPONSE Avenida Angelica No. 2346, 5th Floor São Paulo, SP – Brazil 01228-200 February 20, 2025 VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549 Attention: Anuja Majmudar Daniel Morris Re: Ambipar Emergency Response Post Effective Amendment No. 3 to Form F-1 on Form F-3 File No. 333-270493 (the “Registrat

February 18, 2025 CORRESP

Simpson Thacher & Bartlett llp

Simpson Thacher & Bartlett llp av. pres. juscelino kubitschek, 1455 12° andar, conj. 121 são paulo, sp, brasil 04543-011 telephone: +55-11-3546-1000 facsimile: +55-11-3546-1002 DIRECT DIAL NUMBER +1 (212) 455-2295 E-MAIL ADDRESS [email protected] February 18, 2025 VIA EDGAR TRANSMISSION U.S. Securities and Exchange Commission Division of Corporation Finance Office of Technology 100 F Street, N

February 3, 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 January, 2025 Commission File Number: 001-4

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, 2025 Commission File Number: 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Braz

February 3, 2025 POS AM

As filed with the Securities and Exchange Commission on February 3, 2025

As filed with the Securities and Exchange Commission on February 3, 2025 Registration No.

February 3, 2025 EX-99.1

(in US$ millions)(1)

Exhibit 99.1 AMBIPAR EMERGENCY RESPONSE Summary Results for the Nine Months Period Ended September 30, 2024. Summary Results for the Nine months ended September 30, 2024 The following discussion contains forward-looking statements that involve risks and uncertainties. Our actual results may differ materially from those discussed in the forward-looking statements as a result of various factors, inc

February 3, 2025 EX-99.2

September 30, 2024 (unaudited)

Exhibit 99.2 AMBIPAR EMERGENCY RESPONSE Unaudited Interim Condensed Consolidated Financial Statements of Ambipar Emergency Response for the Nine-Month Period Ended September 30, 2024, and December 31, 2023. AMBIPAR EMERGENCY RESPONSE Condensed Consolidated Interim Statements of Financial Position (Unaudited) As of September 30, 2024 and December 31, 2023 (Values expressed in thousands of Brazilian

February 3, 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 January 2025 Commission File Number 001-406

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 2025 Commission File Number 001-40628 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) N/A (Translation of registrant’s name into English) Avenida Angél

February 3, 2025 EX-99.1

3Q24 Highlights uRecord net revenue of R$1,011.6 million, up 57.8% from 3Q23 and +36.6% from 2Q24; uRecord adjusted net revenue of R$846.0 million, up 32.0% from 3Q23 and +14.2% from 2Q24; uRecord EBITDA of R$242.5 million, up 32.4% from 3Q23 and 26.

São Paulo, January 29, 2025 – Ambipar Emergency Response S.A. (“Ambipar” or “Company”) Management Report for the Third Quarter of 2024 (3Q24) This report presents the Financial Statements prepared in accordance with the standards established by the Accounting Pronouncements Committee (CPC) and approved by the Brazilian Securities and Exchange Commission (CVM), also in compliance with the Internati

February 3, 2025 EX-21.1

LIST OF SUBSIDIARIES

Exhibit 21.1 LIST OF SUBSIDIARIES Entity Name Place of Business/ Country of Incorporation Emergência Participações S.A. Brazil Ambipar Response S.A. Brazil Ambipar Insurance - Correta de Seguros Ltda Brazil Ambipar Response Insurance - Atendimento a Seguros Ltda Brazil Ambipar Response Chile SpA Chile Ambipar Response Chile S.A. Chile Ambipar Peru SAC Peru Ambipar Response Training S.A. Chile Ambi

December 16, 2024 EX-99.1

AMBIPAR EMERGENCY RESPONSE VOTING RESULTS OF 2024 ANNUAL GENERAL MEETING OF SHAREHOLDERS

Exhibit 99.1 AMBIPAR EMERGENCY RESPONSE VOTING RESULTS OF 2024 ANNUAL GENERAL MEETING OF SHAREHOLDERS São Paulo, December 16, 2024 – Ambipar Emergency Response (NYSE American: AMBI) (“Company” or “Ambipar Response”) announces that the following resolutions set out in its Notice of Annual General Meeting dated December 6, 2024 were duly passed at its annual general meeting held on December 16, 2024

December 16, 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 December 2024 Commission File Number 001-40

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 2024 Commission File Number 001-40628 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) N/A (Translation of registrant’s name into English) Avenida Angé

December 6, 2024 EX-99.1

AMBIPAR EMERGENCY RESPONSE NOTICE OF ANNUAL GENERAL MEETING OF SHAREHOLDERS TO BE HELD DECEMBER 16, 2024

Exhibit 99.1 AMBIPAR EMERGENCY RESPONSE NOTICE OF ANNUAL GENERAL MEETING OF SHAREHOLDERS TO BE HELD DECEMBER 16, 2024 NOTICE IS HEREBY GIVEN that an annual general meeting (the “AGM”) of Ambipar Emergency Response (the “Company”) will be held on December 16, 2024 at 10:00 a.m. (Brasilia time) at Avenida Angélica, nº 2346, 5th Floor, São Paulo, São Paulo, Brazil, 01228-200. Holders of record of the

December 6, 2024 EX-99.2

Ambipar Emergency Response P.O. Box 10008 Willow House, Cricket Square Grand Cayman Cayman Islands PROXY STATEMENT

Exhibit 99.2 Ambipar Emergency Response P.O. Box 10008 Willow House, Cricket Square Grand Cayman KY1-1001 Cayman Islands PROXY STATEMENT General The board of directors of Ambipar Emergency Response (the “Company” or “we”) is soliciting proxies for the annual general meeting of shareholders (the “AGM”) of the Company to be held on December 16, 2024 at 10:00 a.m. (Brasilia time). The AGM will be hel

December 6, 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 December, 2024 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 December, 2024 Commission File Number: 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) N/A (Translation of registrant’s name into English) Avenida An

December 6, 2024 EX-99.3

Form of Proxy Card for Registered Shareholders YOUR VOTE JS IMPORTANT. PLEASE VOTE TODAY. 2024 Vote by Internet-QUICK *** EASY IMMEDIATE -24 Hours a Day, 7 Days a Week or by Mail Your Internet vote authorizes the named proxies to vote your shares In

Exhibit 99.3 Form of Proxy Card for Registered Shareholders YOUR VOTE JS IMPORTANT. PLEASE VOTE TODAY. 2024 Vote by Internet-QUICK *** EASY IMMEDIATE -24 Hours a Day, 7 Days a Week or by Mail Your Internet vote authorizes the named proxies to vote your shares In the same manner as If you marked, signed and returned your proxy card. Votes submitted electronically over the Internet must be received

November 15, 2024 EX-99.1

AMBIPAR PARTICIPAÇÕES E EMPREENDIMENTOS S.A. – EARNINGS RELEASE 3Q24

Exhibit 99.1 AMBIPAR PARTICIPAÇÕES E EMPREENDIMENTOS S.A. – EARNINGS RELEASE 3Q24 RESPONSE SEGMENT 3Q24 HIGHLIGHTS Net Revenue (R$ MM) 3Q23 2Q24 3Q24 9M23 9M24 Var. 3Q24 3Q23 Var. 3Q24 2Q24 Var. 9M24 9M23 Net revenue 641.1 740.5 1,011.6 1,849.4 2,431.2 57.8 % 36.6 % 31.5 % Brazil 242.5 359.1 503.2 650.8 1,156.7 107.5 % 40.1 % 77.7 % North America 314.3 296.5 401.0 936.3 1,001.1 27.6 % 35.2 % 6.9 %

November 15, 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 November, 2024 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 November, 2024 Commission File Number: 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Bra

October 23, 2024 EX-99.1

Ambipar Emergency Response Announces Board of Directors Change

Exhibit 99.1 Ambipar Emergency Response Announces Board of Directors Change São Paulo, Brazil – October 22, 2024 – Ambipar Emergency Response (NYSE American: AMBI) (“Ambipar Response” or the “Company”) announces the resignation request of Mr. Carlos Augusto Leone Piani, from the position of board member of the Board of Directors of the Company. The Company thanks Mr. Piani for his services and wis

October 23, 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 October, 2024 Commission File Number: 001-4

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 October, 2024 Commission File Number: 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Braz

September 19, 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 September, 2024 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, 2024 Commission File Number: 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Br

September 19, 2024 EX-99.1

Ambipar Emergency Response Announces Leadership Changes

Exhibit 99.1 Ambipar Emergency Response Announces Leadership Changes São Paulo, Brazil – September 18, 2024 – Ambipar Emergency Response (NYSE American: AMBI) (“Ambipar Response” or the “Company”) announces the following leadership changes: Fabio Castro, CFO, has departed from the Company. Rafael Espírito Santo, will accumulate the role while the Company’s Board seeks for a replacement. About Ambi

August 9, 2024 EX-99.1

RESULTS PRESENTATION

Exhibit99.1 RESULTS PRESENTATION 2Q24 Ambipar Response – Ambipar Group DISCLAIMER This presentation has been prepared by AMBIPAR and may contains forward-looking statements that can be identified using forward-looking words such as “anticipate,” “believe,” “could,” “expect,” “should,” “plan,” “intend,” “estimate” and “potential,” among others. Forward-looking statements appear in several places in

August 9, 2024 EX-99.1

Geographic Distribution of Revenue Geographic Distribution of Revenue (% Gross Revenue)

Exhibit99.1 INDEX HIGHLIGHTS 3 LETTER TO SHAREHOLDERS 4 GROSS REVENUE 6 NET REVENUE 10 COST OF PRODUCTS/SERVICES (CASH) 11 EBITDA 12 FINANCIAL RESULTS 12 NET INCOME 13 CAPITAL STRUCTURE 13 ROIC 15 CAPEX 16 ANNEXES 17 AMBIPAR RESPONSE 23 2 HIGHLIGHTS •Net Revenue expanded 21.0% vs 2Q23 and 9.0% compared to 1Q24; •Result with greater contribution from operations in Brazil, with 65.3% growth in reven

August 9, 2024 EX-99.1

June 30, 2024 (unaudited)

Exhibit 99.1 AMBIPAR EMERGENCY RESPONSE Condensed Consolidated Interim Statement of Financial Position (Unaudited) As of June 30, 2024, and December 31, 2023 AMBIPAR EMERGENCY RESPONSE Condensed Consolidated Interim Statements of Financial Position (Unaudited) As of June 30, 2024 and December 31, 2023 (Values expressed in thousands of Brazilian Reais) Assets Note June 30, 2024 (unaudited) December

August 9, 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 August, 2024 Commission File Number: 001-41

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, 2024 Commission File Number: 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Brazi

August 9, 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 August, 2024 Commission File Number: 001-41

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, 2024 Commission File Number: 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Brazi

August 9, 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 August, 2024 Commission File Number: 001-41

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, 2024 Commission File Number: 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Brazi

July 31, 2024 EX-4.2

AMBIPAR EMERGENCY RESPONSE 2023 OMNIBUS INCENTIVE PLAN (AS AMENDED AND RESTATED ON JULY 22, 2024)

Exhibit 4.2 AMBIPAR EMERGENCY RESPONSE 2023 OMNIBUS INCENTIVE PLAN (AS AMENDED AND RESTATED ON JULY 22, 2024) 1.Purpose. The purpose of the Ambipar Emergency Response 2023 Omnibus Incentive Plan is to provide a means through which the Company and the other members of the Company Group may attract and retain key personnel, and to provide a means whereby directors, officers, employees, consultants,

July 31, 2024 S-8

As filed with the Securities and Exchange Commission on July 30, 2024

As filed with the Securities and Exchange Commission on July 30, 2024 Registration No.

July 31, 2024 EX-24.1

POWER OF ATTORNEY

Exhibit 24.1 POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Rafael Espírito Santo and Fábio Castro as attorneys-in-fact, as his or her true and lawful attorneys-in-fact and agents, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, to si

July 31, 2024 EX-FILING FEES

CALCULATION OF FILING FEE TABLES Form S-8 (Form Type) AMBIPAR EMERGENCY RESPONSE (Exact name of Registrant as specified in its charter) Table 1: Newly Registered Securities

Exhibit 107 CALCULATION OF FILING FEE TABLES Form S-8 (Form Type) AMBIPAR EMERGENCY RESPONSE (Exact name of Registrant as specified in its charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule (2) Amount Registered (1) Proposed Maximum Offering Price Per Unit (2) Maximum Aggregate Offering Price (2) Fee Rate Amount of Registration Fee Equity Class A Ordinary Shares, par value US$0.

June 18, 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: 001-4163

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: 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Brazil,

June 18, 2024 EX-99.1

March 31, 2024 (unaudited)

Exhibit 99.1 AMBIPAR EMERGENCY RESPONSE Condensed Consolidated Interim statement of financial position (Unaudited) As of March 31, 2024, and December 31, 2023 AMBIPAR EMERGENCY RESPONSE Condensed Consolidated Interim statements of financial position As of March 31, 2024 and December 31, 2023 (Amounts expressed in thousands of Brazilian Reais, except earnings per share) Assets Note March 31, 2024 (

May 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 May, 2024 Commission File Number: 001-41638

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, 2024 Commission File Number: 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Brazil,

May 30, 2024 EX-99.1

ambipar response Rafael Espirito Santo CEO 1. Pre and Post IPO Positioning 2. Business model 3. Track record and cases

ambipar response Rafael Espirito Santo CEO 1. Pre and Post IPO Positioning 2. Business model 3. Track record and cases 4. Opportunity Investor day a ambipar response Our mission is to ensure the continuity of your business, preserve your reputation, and protect the environment. Investor day www.ambipar.com www.ambipar.com EMERGENCY RESPONSE Crisis Management Emergency Response A leader in crisis m

May 23, 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 May, 2024 Commission File Number: 001-41638

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, 2024 Commission File Number: 001-41638 AMBIPAR EMERGENCY RESPONSE (Translation of registrant's name into English) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Brazil, 01228-2

May 23, 2024 EX-99.1

Ambipar Emergency Response Announces Management Reorganization

EX-99.1 2 exhibit9911.htm EX-99.1 Exhibit 99.1 Ambipar Emergency Response Announces Management Reorganization São Paulo, Brazil – May 23, 2024 – Ambipar Emergency Response (NYSE American: AMBI) (“Ambipar Response” or the “Company”) is pleased to announce a change in management, effective as of today. Mr. Pedro Borges Petersen, previously serving as the Chief Financial Officer at Ambipar Response,

May 16, 2024 424B3

Ambipar Emergency Response

Filed Pursuant to Rule 424(b)(3) Registration No. 333-270493 PROSPECTUS SUPPLEMENT NO. 4 (to Prospectus dated August 25, 2023) Ambipar Emergency Response This prospectus supplement updates, amends and supplements the prospectus contained in our Registration Statement on Form F-1 (as supplemented or amended from time to time, the “Prospectus”) (Registration No. 333-270493). This prospectus suppleme

May 16, 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 May, 2024 Commission File Number: 001-41638

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, 2024 Commission File Number: 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Brazil,

May 14, 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 May, 2024 Commission File Number: 001-41638

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, 2024 Commission File Number: 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Brazil,

May 14, 2024 EX-99.1

0.5 pp

Exhibit 99.1 AMBIPAR PARTICIPAÇÕES E EMPREENDIMENTOS S.A. - EARNINGS RELEASE 1Q24 RESPONSE SEGMENT HIGHLIGHTS R$million 1Q24 1Q23 Chg. 4Q23 Chg. GROSS REVENUE 737.1 627.1 17.5% 791.7 -6.9% DEDUCTIONS (58.1) (30.9) 88.0% (51.2) 13.5% NET REVENUE 679.1 596.3 13.9% 740.5 -8.3% GROSS PROFIT 184.0 145.2 26.7% 197.1 -6.6% GROSS MARGIN 27.1% 24.4% 2.7pp 26.6% 0.5 pp GROSS REVENUE RESPONSE Composition of

May 13, 2024 EX-12.1

CERTIFICATION BY THE CHIEF EXECUTIVE OFFICER PURSUANT TO RULES 13a-14(a) AND 15d-14(a) AS ADOPTED UNDER SECTION 302 OF THE SARBANES-OXLEY ACT

Exhibit 12.1 CERTIFICATION BY THE CHIEF EXECUTIVE OFFICER PURSUANT TO RULES 13a-14(a) AND 15d-14(a) AS ADOPTED UNDER SECTION 302 OF THE SARBANES-OXLEY ACT I, Rafael Espírito Santo, certify that: 1. I have reviewed this annual report on Form 20-F for the year ended December 31, 2023 of Ambipar Emergency Response (the “Company”); 2. Based on my knowledge, this report does not contain any untrue stat

May 13, 2024 EX-13.2

CERTIFICATION BY THE CHIEF FINANCIAL OFFICER PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT

Exhibit 13.2 CERTIFICATION BY THE CHIEF FINANCIAL OFFICER PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT Pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code), the undersigned officer of Ambipar Emergency Response (the “Company”), does hereby certify, to such o

May 13, 2024 EX-2.3

DESCRIPTION OF SECURITIES REGISTERED UNDER SECTION 12 OF THE EXCHANGE ACT

Exhibit 2.3 DESCRIPTION OF SECURITIES REGISTERED UNDER SECTION 12 OF THE EXCHANGE ACT The following is a description of our outstanding securities registered under Section 12 of the Exchange Act as required pursuant to the relevant Items under Form 20-F. Capitalized terms used but not defined herein have the meanings given to them in our annual report on Form 20-F for the year ended December 31, 2

May 13, 2024 EX-13.1

CERTIFICATION BY THE CHIEF EXECUTIVE OFFICER PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT

Exhibit 13.1 CERTIFICATION BY THE CHIEF EXECUTIVE OFFICER PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT Pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code), the undersigned officer of Ambipar Emergency Response (the “Company”), does hereby certify, to such o

May 13, 2024 EX-12.2

CERTIFICATION BY THE CHIEF FINANCIAL OFFICER PURSUANT TO RULES 13a-14(a) AND 15d-14(a) AS ADOPTED UNDER SECTION 302 OF THE SARBANES-OXLEY ACT

Exhibit 12.2 CERTIFICATION BY THE CHIEF FINANCIAL OFFICER PURSUANT TO RULES 13a-14(a) AND 15d-14(a) AS ADOPTED UNDER SECTION 302 OF THE SARBANES-OXLEY ACT I, Pedro Petersen, certify that: 1. I have reviewed this annual report on Form 20-F for the year ended December 31, 2023 of Ambipar Emergency Response (the “Company”); 2. Based on my knowledge, this report does not contain any untrue statement o

May 13, 2024 EX-97.1

AMBIPAR EMERGENCY RESPONSE Incentive Compensation Clawback Policy (As Adopted on November 30, 2023 pursuant to Section 811 of the NYSE American Company Guide)

Exhibit 97.1 AMBIPAR EMERGENCY RESPONSE Incentive Compensation Clawback Policy (As Adopted on November 30, 2023 pursuant to Section 811 of the NYSE American Company Guide) 1.Overview. The Board of Directors (the “Board”) of Ambipar Emergency (the “Company”) has adopted this Incentive Compensation Clawback Policy (the “Policy”) which requires the recoupment of certain incentive-based compensation i

May 13, 2024 EX-2.2

[Form of Warrant Certificate]

Exhibit 2.2 [Form of Warrant Certificate] [FACE] Number Warrants THIS WARRANT SHALL BE VOID IF NOT EXERCISED PRIOR TO THE EXPIRATION OF THE EXERCISE PERIOD PROVIDED FOR IN THE WARRANT AGREEMENT DESCRIBED BELOW Ambipar Emergency Response Incorporated Under the Laws of the Cayman Islands CUSIP G02532 110 Warrant Certificate This Warrant Certificate certifies that , or registered assigns, is the regi

May 13, 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 May, 2024 Commission File Number: 001-41638

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, 2024 Commission File Number: 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Brazil,

May 13, 2024 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECUR

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXC

May 1, 2024 NT 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 12b-25 NOTIFICATION OF LATE FILING

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 12b-25 NOTIFICATION OF LATE FILING SEC File Number 001-41638 CUSIP Number G02532 102 G02532 110 (Check One): ¨ Form 10-K x Form 20-F ¨ Form 11-K ¨ Form 10-Q ¨ Form 10-D ¨ Form N-CEN ¨ Form N-CSR For Period Ended: December 31, 2023 ¨ Transition Report on Form 10-K ¨ Transition Report on Form 20-F ¨ Transition Report on For

April 2, 2024 EX-99.1

Capex

Exhibit 99.1 AMBIPAR PARTICIPAÇÕES E EMPREENDIMENTOS S.A. - EARNINGS RELEASE 2023 & 4Q23 RESPONSE SEGMENT HIGHLIGHTS BRL million 4Q23 4Q22 Chg. 3Q23 Chg. 2023* 2022 Chg. GROSS REVENUE 791.7 667.8 18.6% 702.6 12.7% 2,781.9 1,813.3 53.4% DEDUCTIONS (51.2) (35.5) 44.2% (61.5) -16.7% (191.9) (128.4) 49.5% NET REVENUE 740.5 632.3 17.1% 641.1 15.5% 2,590.0 1,684.9 53.7% GROSS PROFIT 197.1 178.1 10.7% 19

April 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 April, 2024 Commission File Number: 001-416

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: 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Brazil

March 7, 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 March, 2024 Commission File Number: 001-416

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, 2024 Commission File Number: 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Brazil

February 14, 2024 SC 13G

AMBI / Ambipar Emergency Response / Ambipar Participacions & Enterprises S.A. - SC 13G Passive Investment

SC 13G 1 a13gambifinal18012024.htm SC 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* AMBIPAR EMERGENCY RESPONSE (Name of Issuer) Class A ordinary shares, par value $0.0001 per share (Title of Class of Securities) G02532102 (CUSIP Number) December 31, 2023 (Date of Event Which Requires Filing of this

February 14, 2024 EX-1

AGREEMENT OF JOINT FILING

EX-1 2 exhibit1.htm EX-1 Exhibit 1 AGREEMENT OF JOINT FILING The parties to this Agreement hereby agree to prepare jointly and file timely (and otherwise to deliver as appropriate) all filings on any Schedule 13D or Schedule 13G, and any and all amendments thereto and any other document relating thereto (collectively, the “Filings”) required to be filed by them pursuant to the Securities Exchange

January 30, 2024 SC 13G

AMBI / Ambipar Emergency Response / Opportunity Private Equity Gestora de Recursos Ltda. - SC 13G Passive Investment

SC 13G 1 d718473dsc13g.htm SC 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* AMBIPAR EMERGENCY RESPONSE (Name of Issuer) Class A Ordinary Shares, par value $0.0001 per share (Title of Class of Securities) G02532102 (CUSIP Number) December 31, 2023 (Date of Event which Requires Filing of this State

January 8, 2024 EX-99.2

September 30, 2023

Exhibit 99.2 AMBIPAR EMERGENCY RESPONSE Condensed Consolidated Interim statement of financial position (Unaudited) As of September 30, 2023, and December 31, 2022 Contents Condensed Consolidated Interim statements Condensed Consolidated Interim statement of financial position (Unaudited) 2 Condensed Consolidated Interim statements of income (Unaudited) 4 Condensed Consolidated Interim statements o

January 8, 2024 424B3

Ambipar Emergency Response

Filed Pursuant to Rule 424(b)(3) Registration No. 333-270493 AMENDMENT TO PROSPECTUS SUPPLEMENT NO. 3 (to Prospectus dated August 25, 2023) Ambipar Emergency Response This prospectus supplement updates, amends and supplements the prospectus contained in our Registration Statement on Form F-1 (as supplemented or amended from time to time, the “Prospectus”) (Registration No. 333-270493). This prospe

January 8, 2024 6-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K/A 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: 00

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K/A 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: 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, B

January 8, 2024 EX-99.1

(in US$ millions)(1)

Exhibit 99.1 Summary Results for the Nine months ended September 30, 2023 The information set forth below updates certain information about us included in the prospectus contained in our Registration Statement on Form F-1 (Registration No. 333-270493) which we refer to herein as the “Prospectus,” and should be read in conjunction with the information set forth in the Prospectus under “Financial St

December 18, 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-

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: 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Bra

December 18, 2023 EX-99.2

September 30, 2023

Exhibit 99.2 AMBIPAR EMERGENCY RESPONSE Condensed Consolidated Interim statement of financial position (Unaudited) As of September 30, 2023, and December 31, 2022 Contents Condensed Consolidated Interim statements Condensed Consolidated Interim statement of financial position (Unaudited) 2 Condensed Consolidated Interim statements of income (Unaudited) 4 Condensed Consolidated Interim statements o

December 18, 2023 EX-99.1

Capex (R$ Million)

Exhibit 99.1 INDEX LETTER TO SHAREHOLDERS 3 AMBIPAR RESPONSE 4 HIGHLIGHTS 5 GROSS REVENUE 5 NET REVENUE 9 COST OF PRODUCTS/SERVICES (CASH) 9 EBITDA 11 FINANCIAL RESULTS 12 NET INCOME 12 CAPITAL STRUCTURE 13 ROIC 15 CAPEX 16 ANNEXES 17 2 LETTER TO SHAREHOLDERS To our shareholders In 3Q2023, Ambipar Response (hereinafter referred to as "Response" or "the Company") continued executing the growth plan

December 18, 2023 424B3

Ambipar Emergency Response

Filed Pursuant to Rule 424(b)(3) Registration No. 333-270493 PROSPECTUS SUPPLEMENT NO. 3 (to Prospectus dated August 25, 2023) Ambipar Emergency Response This prospectus supplement updates, amends and supplements the prospectus contained in our Registration Statement on Form F-1 (as supplemented or amended from time to time, the “Prospectus”) (Registration No. 333-270493). This prospectus suppleme

December 18, 2023 EX-99.1

(in US$ millions)(1)

Exhibit 99.1 Summary Results for the Nine months ended September 30, 2023 The information set forth below updates certain information about us included in the prospectus contained in our Registration Statement on Form F-1 (Registration No. 333-270493) which we refer to herein as the “Prospectus,” and should be read in conjunction with the information set forth in the Prospectus under “Financial St

December 18, 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-

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: 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Bra

November 16, 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 November, 2023 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 November, 2023 Commission File Number: 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Bra

November 16, 2023 EX-99.1

AMBIPAR PARTICIPAÇÕES E EMPREENDIMENTOS S.A. - EARNINGS RELEASE 3Q23

Exhibit 99.1 AMBIPAR PARTICIPAÇÕES E EMPREENDIMENTOS S.A. - EARNINGS RELEASE 3Q23 RESPONSE SEGMENT HIGHLIGHTS BRL million 3Q23 3Q22 Chg. 2Q23 Chg. 9M23* 9M22 Chg. GROSS REVENUE 702.6 431.8 62.7% 660.4 6.4% 1,990.1 1,145.5 73.7% DEDUCTIONS -61.5 -33.7 82.5% -48.3 27.3% -140.7 -92.9 51.5% NET REVENUE 641.1 398.1 61.0% 612.1 4.7% 1,849.4 1,052.6 75.7% GROSS PROFIT 192.2 115.3 66.7% 157.9 21.7% 495.4

October 12, 2023 EX-FILING FEES

CALCULATION OF FILING FEE TABLES Form S-8 (Form Type) AMBIPAR EMERGENCY RESPONSE (Exact name of Registrant as specified in its charter) Table 1: Newly Registered Securities

Exhibit 107 CALCULATION OF FILING FEE TABLES Form S-8 (Form Type) AMBIPAR EMERGENCY RESPONSE (Exact name of Registrant as specified in its charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule (2) Amount Registered (1) Proposed Maximum Offering Price Per Unit (2) Maximum0 Aggregate Offering Price (2) Fee Rate Amount of Registration Fee Equity Class A Ordinary Shares, par value US$0.

October 12, 2023 S-8

As filed with the Securities and Exchange Commission on October 12, 2023

As filed with the Securities and Exchange Commission on October 12, 2023 Registration No.

October 10, 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 October, 2023 Commission File Number: 001-4

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 October, 2023 Commission File Number: 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Braz

October 10, 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 October, 2023 Commission File Number: 001-4

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 October, 2023 Commission File Number: 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Braz

October 10, 2023 EX-99.1

Institutional Presentation October 2023 There is no planet B. Take care of the planet

Exhibit 99.1 Institutional Presentation October 2023 There is no planet B. Take care of the planet Section I Ambipar Response At - a - Glance There is no planet B. Take care of the planet Ambipar Response At - A - Glance Notes: (1) Operating ROIC: Considers a fixed tax rate of 30% and average invested capital of the last 5 quarters. Invested Capital calculated by: Shareholders' Equity (+) Net Debt

October 10, 2023 EX-99.1

Quarterly Gross Profit(R$ million) and Margin (%)

Exhibit 99.1 INDEX LETTER TO SHAREHOLDERS 3 AMBIPAR RESPONSE 5 HIGHLIGHTS 6 GROSS REVENUE 6 NET REVENUE 10 COST OF PRODUCTS/SERVICES (CASH) 10 GROSS PROFIT 12 EBITDA 12 FINANCIAL RESULTS 13 NET INCOME 13 CAPITAL STRUCTURE 13 ROIC 16 CAPEX 17 ANNEXES 18 2 LETTER TO SHAREHOLDERS To our shareholders In 2023, Ambipar Response (hereinafter referred to as "Response" or "the Company") proudly completed i

October 10, 2023 424B3

Ambipar Emergency Response

Filed Pursuant to Rule 424(b)(3) Registration No. 333-270493 PROSPECTUS SUPPLEMENT NO. 2 (to Prospectus dated August 25, 2023) Ambipar Emergency Response This prospectus supplement updates, amends and supplements the prospectus contained in our Registration Statement on Form F-1 (as supplemented or amended from time to time, the “Prospectus”) (Registration No. 333-270493). This prospectus suppleme

August 28, 2023 424B3

Ambipar Emergency Response

Filed Pursuant to Rule 424(b)(3) Registration No. 333-270493 PROSPECTUS SUPPLEMENT NO. 1 (to Prospectus dated August 25, 2023) Ambipar Emergency Response This prospectus supplement updates, amends and supplements the prospectus contained in our Registration Statement on Form F-1 (as supplemented or amended from time to time, the “Prospectus”) (Registration No. 333-270493). This prospectus suppleme

August 28, 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 August, 2023 Commission File Number: 001-41

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, 2023 Commission File Number: 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Brazi

August 28, 2023 EX-99.1

(in US$ millions)(1)

Exhibit 99.1 Summary Results for the Six Months Ended June 30, 2023 The information set forth below updates certain information about us included in the prospectus contained in our Registration Statement on Form F-1 (Registration No. 333-270493) which we refer to herein as the “Prospectus,” and should be read in conjunction with the information set forth in the Prospectus under “Financial Statemen

August 28, 2023 EX-99.2

AMBIPAR EMERGENCY RESPONSE

Exhibit 99.2 AMBIPAR EMERGENCY RESPONSE Condensed Consolidated Interim statement of financial position (Unaudited) As of June 30, 2023, and December 31, 2022 (Values expressed in thousands of Brazilian Reais) Note June 30, 2023 (unaudited) December 31, 2022 Assets Current assets Cash and cash equivalents 4 691,829 271,607 Trade and other receivables, net 5 712,544 711,892 Current income tax and so

August 25, 2023 424B3

Ambipar Emergency Response Primary Offering Of 16,180,000 Class A Ordinary Shares Secondary Offering of 18,807,000 Class A Ordinary Shares 3,530,000 Warrants to Purchase Class A Ordinary Shares

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(3)  Registration No. 333-270493 PROSPECTUS Ambipar Emergency Response Primary Offering Of 16,180,000 Class A Ordinary Shares Secondary Offering of 18,807,000 Class A Ordinary Shares 3,530,000 Warrants to Purchase Class A Ordinary Shares This prospectus relates to the issuance from time to time by Ambipar Emergency Response, a Cayman Islands exempted

August 23, 2023 CORRESP

AMBIPAR EMERGENCY RESPONSE Avenida Angelica No. 2346, 5th Floor São Paulo, SP – Brazil 01228-200

AMBIPAR EMERGENCY RESPONSE Avenida Angelica No. 2346, 5th Floor São Paulo, SP – Brazil 01228-200 August 23, 2023 VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549 Re: Ambipar Emergency Response Registration Statement on Form F-1 File March 13, 2023, as amended File No. 333-270493 Ladies and Gentlemen: Pursuant to Rule 461 un

August 16, 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 August, 2023 Commission File Number: 001-41

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, 2023 Commission File Number: 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Brazi

August 16, 2023 EX-99.1

EARNINGS RELEASE 2Q23

Exhibit 99.1 EARNINGS RELEASE 2Q23 RESPONSE SEGMENT BRL million 2Q23 2Q22 Chg. 1Q23* Chg. 6M23* 6M22 Chg. GROSS REVENUE 660.4 363.3 81.8% 627.1 5.3% 1,287.5 713.7 80.4% DEDUCTIONS -48.3 -30.7 57.3% -30.9 56.3% -79.2 -59.2 33.8% NET REVENUE 612.1 332.6 84.0% 596.3 2.7% 1,208.3 654.5 84.6% COST OF SERVICES PROVIDED -454.1 -243.6 86.5% -452.1 0.4% -906.3 -472.6 91.8% GROSS PROFIT 157.9 89.1 77.4% 144

August 7, 2023 F-1/A

As filed with the U.S. Securities and Exchange Commission on August 4, 2023

Table of Contents As filed with the U.S. Securities and Exchange Commission on August 4, 2023 Registration Statement No. 333-270493 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 2 to FORM F-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 AMBIPAR EMERGENCY RESPONSE (Exact Name of Registrant as Specified in its Charter) The Cayman Islands 4955 N/A (S

August 7, 2023 EX-21.1

Legal Name

Exhibit 21.1 Legal Name Jurisdiction of Incorporation Ambipar Atendimento Médico Hospitalar Ltda. Brazil Ambipar C-Safety Comércio, Indústria e Serviços Ltda. Brazil Ambipar Flyone Serviço Aéreo Especializado, Comércio e Serviço Ltda. Brazil Ambipar Response Analytical S.A. Brazil Ambipar Response Control Environmental Consulting S.A. Brazil Ambipar Response Dracares Apoio Marítimo e Portuário S.A

June 28, 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 June, 2023 Commission File Number: 001-4163

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, 2023 Commission File Number: 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Brazil,

June 28, 2023 EX-99.1

Ambipar Emergency Response Announces Management Reorganization

Exhibit 99.1 Ambipar Emergency Response Announces Management Reorganization São Paulo, Brazil – June 27, 2023 – Ambipar Emergency Response (NYSE American: AMBI) (“Ambipar Response or the “Company”) is pleased to announce a strategic management reorganization, effective as of today. Mr. Guilherme Borlenghi, previously serving as the Chief Operating Officer at Ambipar Response, has stepped down from

May 17, 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: 001-41638

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: 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Brazil,

May 17, 2023 EX-99.1

EARNINGS RELEASE 1Q23

Exhibit 99.1 EARNINGS RELEASE 1Q23 RESPONSE SEGMENT INCOME STATEMENT R$ million 1Q23 1Q22 Var. 4Q22 Var. GROSS REVENUE 627.1 350.4 79.0% 667.8 -6.1% DEDUCTIONS -30.9 -28.4 8.8% -35.5 -13.0% NET REVENUE 596.3 321.9 85.2% 632.3 -5.7% COSTS OF SERVICES PROVIDED -452.1 -229.0 97.4% -454.2 -0.5% GROSS PROFIT 144.1 92.9 55.1% 178.1 -19.1% GROSS MARGIN 24.2% 28.9% -4.7 p.p. 28.2% -4.0 p.p. SELLING, GENER

May 15, 2023 EX-2.3

DESCRIPTION OF SECURITIES REGISTERED UNDER SECTION 12 OF THE EXCHANGE ACT

Exhibit 2.3 DESCRIPTION OF SECURITIES REGISTERED UNDER SECTION 12 OF THE EXCHANGE ACT The following is a description of our outstanding securities registered under Section 12 of the Exchange Act as required pursuant to the relevant Items under Form 20-F. Capitalized terms used but not defined herein have the meanings given to them in our annual report on Form 20-F for the year ended December 31, 2

May 15, 2023 EX-12.1

CERTIFICATION BY THE CHIEF EXECUTIVE OFFICER PURSUANT TO RULES 13a-14(a) AND 15d-14(a) AS ADOPTED UNDER SECTION 302 OF THE SARBANES-OXLEY ACT

Exhibit 12.1 CERTIFICATION BY THE CHIEF EXECUTIVE OFFICER PURSUANT TO RULES 13a-14(a) AND 15d-14(a) AS ADOPTED UNDER SECTION 302 OF THE SARBANES-OXLEY ACT I, Yuri Keiserman, certify that: 1. I have reviewed this annual report on Form 20-F for the year ended December 31, 2022 of Ambipar Emergency Response (the “Company”); 2. Based on my knowledge, this report does not contain any untrue statement o

May 15, 2023 EX-2.2

[Form of Warrant Certificate]

Exhibit 2.2 [Form of Warrant Certificate] [FACE] Number Warrants THIS WARRANT SHALL BE VOID IF NOT EXERCISED PRIOR TO THE EXPIRATION OF THE EXERCISE PERIOD PROVIDED FOR IN THE WARRANT AGREEMENT DESCRIBED BELOW Ambipar Emergency Response Incorporated Under the Laws of the Cayman Islands CUSIP G02532 110 Warrant Certificate This Warrant Certificate certifies that , or registered assigns, is the regi

May 15, 2023 EX-13.1

CERTIFICATION BY THE CHIEF EXECUTIVE OFFICER PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT

Exhibit 13.1 CERTIFICATION BY THE CHIEF EXECUTIVE OFFICER PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT Pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code), the undersigned officer of Ambipar Emergency Response (the “Company”), does hereby certify, to such o

May 15, 2023 EX-13.2

CERTIFICATION BY THE CHIEF FINANCIAL OFFICER PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT

Exhibit 13.2 CERTIFICATION BY THE CHIEF FINANCIAL OFFICER PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT Pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code), the undersigned officer of Ambipar Emergency Response (the “Company”), does hereby certify, to such o

May 15, 2023 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 20-F (Mark One)

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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(D) OF

May 15, 2023 EX-12.2

CERTIFICATION BY THE CHIEF FINANCIAL OFFICER PURSUANT TO RULES 13a-14(a) AND 15d-14(a) AS ADOPTED UNDER SECTION 302 OF THE SARBANES-OXLEY ACT

Exhibit 12.2 CERTIFICATION BY THE CHIEF FINANCIAL OFFICER PURSUANT TO RULES 13a-14(a) AND 15d-14(a) AS ADOPTED UNDER SECTION 302 OF THE SARBANES-OXLEY ACT I, Rafael Espírito Santo, certify that: 1. I have reviewed this annual report on Form 20-F for the year ended December 31, 2022 of Ambipar Emergency Response (the “Company”); 2. Based on my knowledge, this report does not contain any untrue stat

May 1, 2023 NT 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 12b-25 NOTIFICATION OF LATE FILING

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 12b-25 NOTIFICATION OF LATE FILING (Check One): ¨ Form 10-K x Form 20-F ¨ Form 11-K ¨ Form 10-Q ¨ Form 10-D ¨ Form N-CEN ¨ Form N-CSR For Period Ended: December 31, 2022 ¨ Transition Report on Form 10-K ¨ Transition Report on Form 20-F ¨ Transition Report on Form 11-K ¨ Transition Report on Form 10-Q ¨ Transition Report o

April 4, 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: 001-416

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: 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Brazil

April 4, 2023 EX-99.1

EMERGÊNCIA PARTICIPAÇÕES S.A.

Exhibit 99.1 EMERGÊNCIA PARTICIPAÇÕES S.A. Statements of financial position As of December 31, 2022 and 2021 (Values expressed in thousands of Brazilian Reais) Assets Consolidated December 31, 2022 December 31, 2021 Current Cash and cash equivalents 271,607 118,918 Trade and other receivables 711,892 234,288 Current income tax and social contribution recoverable 6,388 4,895 Other taxes recoverable

March 30, 2023 EX-FILING FEES

Calculation of Filing Fee Tables.

Exhibit 107 CALCULATION OF FILING FEE TABLES Form F-1 (Form Type) AMBIPAR EMERGENCY RESPONSE (Exact name of Registrant as specified in its charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered (1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Fees to Be Paid Equity Class A ordinary shares issuable on exercise of the Public Warrants (Primary Offering) Other 12,650,000 (2) $10.

March 30, 2023 F-1/A

As filed with the U.S. Securities and Exchange Commission on March 29, 2023

TABLE OF CONTENTS As filed with the U.S. Securities and Exchange Commission on March 29, 2023 Registration Statement No. 333-270493 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 1 to FORM F-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 AMBIPAR EMERGENCY RESPONSE (Exact Name of Registrant as Specified in its Charter) The Cayman Islands 4955 N/A (S

March 29, 2023 CORRESP

* * * * *

March 29, 2023 VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549 Re: Ambipar Emergency Response Registration Statement on Form F-1 File March 13, 2023 File No. 333-270493 Ladies and Gentlemen: On behalf of Ambipar Emergency Response (the “Company”), we are providing the following responses to the comments made by the staff (

March 29, 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 March, 2023 Commission File Number: 001-416

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, 2023 Commission File Number: 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Brazil

March 29, 2023 EX-99.1

EARNINGS RELEASE 4Q22

Exhibit 99.1 EARNINGS RELEASE 4Q22 RESPONSE SEGMENT HIGHLIGHTS BRL million 4Q22 4Q21 Var. 3Q22 Var. 2022 2021 Var. GROSS REVENUE 667.8 281.5 137.2 % 431.8 54.7 % 1,813.3 920.6 97.0 % DEDUCTIONS -35.5 -26.0 36.5 % -33.7 5.3 % -128.4 -97.1 32.2 % NET REVENUE 632.3 255.6 147.4 % 398.1 58.8 % 1,684.9 823.6 104.6 % GROSS PROFIT 178.1 80.3 121.7 % 115.3 54.4 % 475.3 259.3 83.3 % GROSS MARGIN 28.2 % 31.4

March 13, 2023 EX-FILING FEES

Calculation of Filing Fee Tables.

Exhibit 107.1 CALCULATION OF FILING FEE TABLES Form F-1 (Form Type) AMBIPAR EMERGENCY RESPONSE (Exact name of Registrant as specified in its charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered (1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Fees to

March 13, 2023 F-1

Power of Attorney (included on signature page to the registration statement initially filed with the SEC on March 13, 2023).

TABLE OF CONTENTS As filed with the U.S. Securities and Exchange Commission on March 13, 2023 Registration Statement No. 333-      UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM F-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 AMBIPAR EMERGENCY RESPONSE (Exact Name of Registrant as Specified in its Charter) The Cayman Islands 6199 N/A (State or Other Jurisd

March 13, 2023 EX-4.2

Specimen Warrant Certificate of the Company.

Exhibit 4.2 [Form of Warrant Certificate] [FACE] Number Warrants THIS WARRANT SHALL BE VOID IF NOT EXERCISED PRIOR TO THE EXPIRATION OF THE EXERCISE PERIOD PROVIDED FOR IN THE WARRANT AGREEMENT DESCRIBED BELOW Ambipar Emergency Response Incorporated Under the Laws of the Cayman Islands CUSIP G02532 110 Warrant Certificate This Warrant Certificate certifies that , or registered assigns, is the regi

March 13, 2023 EX-4.3

Director Restricted Stock Unit Award Agreement.

Exhibit 4.3 HPX CORP. DIRECTOR RESTRICTED STOCK UNIT AWARD AGREEMENT This Director Restricted Stock Unit Award Agreement (this “RSU Award Agreement”), dated as of July 23, 2021 (the “Grant Date”), is made by and between HPX Corp., an exempted company incorporated under the laws of the Cayman Islands (the “Company”), and Rafael Salvador Grisolia (the “Participant”). The terms of this RSU Award Agre

March 13, 2023 EX-4.4

Restricted Stock Unit Amendment.

  Exhibit 4.4   CONFIDENTIAL   RESTRICTED STOCK UNIT AMENDMENT   This Restricted Stock Unit Amendment (this “Amendment”) is entered into as of July 5, 2022 (the “Agreement Date”), by and between HPX Corp. (the “Company”) and Rafael Salvador Grisolia (the “Participant”), and shall be effective as of the Closing Date (as defined in the Business Combination Agreement dated as of July 5, 2022, by and

March 7, 2023 EX-4.26

Indemnification Agreement by and between Yuri Keiserman and the Company, dated as of March 3, 2023 (incorporated by reference to Exhibit 4.26 to the Shell Company Report on Form 20-F (File No. 001-41638) filed with the SEC on March 7, 2023).

Exhibit 4.26 INDEMNIFICATION AGREEMENT THIS INDEMNIFICATION AGREEMENT (this “Agreement”) is made as of March 3, 2023, by and between Yuri Keiserman and Ambipar Emergency Response, a Cayman Islands exempted company incorporated with limited liability (the “Company”), and (the “Indemnitee”), an executive officer of the Company. WHEREAS, the Indemnitee has agreed to serve as an executive officer of t

March 7, 2023 EX-4.3

Second Plan of Merger, by and between Merger Sub and the Company, dated as of March 3, 2023 (incorporated by reference to Exhibit 4.3 to the Shell Company Report on Form 20-F (File No. 001-41638) filed with the SEC on March 7, 2023).

Exhibit 4.3 The Companies Act (As Revised) of the Cayman Islands Plan of Merger This plan of merger (the "Plan of Merger") is made on 3 March 2023 between Ambipar Emergency Response, an exempted company incorporated with limited liability in the Cayman Islands (the "Surviving Company") and Ambipar Merger Sub, an exempted company incorporated with limited liability in the Cayman Islands (the "Mergi

March 7, 2023 EX-4.28

Indemnification Agreement by and between Guilherme Patini Borlenghi and the Company, dated as of March 3, 2023 (incorporated by reference to Exhibit 4.28 to the Shell Company Report on Form 20-F (File No. 001-41638) filed with the SEC on March 7, 2023).

Exhibit 4.28 INDEMNIFICATION AGREEMENT THIS INDEMNIFICATION AGREEMENT (this “Agreement”) is made as of March 3, 2023, by and between Guilherme Patini Borlenghi and Ambipar Emergency Response, a Cayman Islands exempted company incorporated with limited liability (the “Company”), and (the “Indemnitee”), an executive officer of the Company. WHEREAS, the Indemnitee has agreed to serve as an executive

March 7, 2023 EX-15.3

Consent of BDO RCS Auditores Independentes SS, independent registered public accounting firm for Emergencia

Exhibit 15.3 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We hereby consent to the incorporation by reference in this Registration Statement on Form 20-F of Ambipar Emergency Response of our report dated August 31, 2022, except for Note 1.2, Note 1.3, Note 3.1.15, Note 7, Note 9 and Note 23 as to which the date is December 12, 2022, relating to the combined financial statements of Emer

March 7, 2023 EX-15.2

Consent of Marcum LLP, independent registered public accounting firm for HPX

Exhibit 15.2 Independent Registered Public Accounting Firm’s Consent We consent to the incorporation by reference in this Shell Company Report of Ambipar Emergency Response on Form 20-F of our report dated April 14, 2022, which includes an explanatory paragraph as to the ability of HPX Corp. to continue as a going concern, with respect to our audits of the financial statements of HPX Corp. as of D

March 7, 2023 EX-4.19

Indemnification Agreement by and between Tércio Borlenghi Junior and the Company, dated as of March 3, 2023 (incorporated by reference to Exhibit 4.19 to the Shell Company Report on Form 20-F (File No. 001-41638) filed with the SEC on March 7, 2023).

Exhibit 4.19 INDEMNIFICATION AGREEMENT THIS INDEMNIFICATION AGREEMENT (this “Agreement”) is made as of March 3, 2023, by and between Tércio Borlenghi Junior and Ambipar Emergency Response, a Cayman Islands exempted company incorporated with limited liability (the “Company”), and (the “Indemnitee”), a director of the Company. WHEREAS, the Indemnitee has agreed to serve as a director of the Company

March 7, 2023 EX-4.20

Indemnification Agreement by and between Izabel Cristina Andriotti Cruz de Oliveira and the Company, dated as of March 3, 2023 (incorporated by reference to Exhibit 4.20 to the Shell Company Report on Form 20-F (File No. 001-41638) filed with the SEC on March 7, 2023).

Exhibit 4.20 INDEMNIFICATION AGREEMENT THIS INDEMNIFICATION AGREEMENT (this “Agreement”) is made as of March 3, 2023, by and between Izabel Cristina Andriotti Cruz de Oliveira and Ambipar Emergency Response, a Cayman Islands exempted company incorporated with limited liability (the “Company”), and (the “Indemnitee”), a director of the Company. WHEREAS, the Indemnitee has agreed to serve as a direc

March 7, 2023 EX-4.17

Trademark Licensing Agreement, dated as of March 3, 2023, by and between Emergencia and Ambipar (incorporated by reference to Exhibit 4.17 to the Shell Company Report on Form 20-F (File No. 001-41638) filed with the SEC on March 7, 2023).

Exhibit 4.17 TRADEMARK LICENSE AGREEMENT AND OTHER COVENANTS This Trademark License Agreement and Other Covenants (“Agreement”), dated as of March 3, 2023, is executed by and between: (I) AMBIPAR PARTICIPAÇÕES E EMPREENDIMENTOS S.A., a Brazilian corporation enrolled with the Brazilian Taxpayer’s Registry (CNPJ) under No. 12.648.266/0001-24, with head offices at Av. Pacaembu No. 1088, room 09, Paca

March 7, 2023 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 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 OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934

March 7, 2023 EX-15.4

Consent of Grant Thornton LLP, independent certified public accountants for Witt O’Brien’s, LLC.

Exhibit 15.4 CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTING FIRM We have issued our report dated May 19, 2022, with respect to the consolidated financial statements of Witt O’Brien’s, LLC. as of December 31, 2021 and 2020 and for the Successor period April 15, 2021, through December 31, 2021, and the Predecessor periods January 1, 2021, through April 14, 2021, and year ended December 31, 2020,

March 7, 2023 EX-4.12

Cost Sharing Agreement, dated as of March 3, 2023, by and among Ambipar, Emergencia and certain of its subsidiaries (incorporated by reference to Exhibit 4.12 to the Shell Company Report on Form 20-F (File No. 001-41638) filed with the SEC on March 7, 2023).

Exhibit 4.12 Cost Sharing Agreement This Cost Sharing Agreement (this “Agreement”), dated as of March 3, 2023 (the “Effective Date”), is by and among Ambipar Participações e Empreendimentos S.A., a Brazilian corporation enrolled with the CNPJ/ME under No. 12.648.266/0001-24, with head offices at Av. Pacaembu No. 1088, room 09, Pacaembu, at the City and State of São Paulo, Zip Code 01234-000 (“Ambi

March 7, 2023 EX-4.22

Indemnification Agreement by and between Thiago da Costa Silva and the Company, dated as of March 3, 2023 (incorporated by reference to Exhibit 4.22 to the Shell Company Report on Form 20-F (File No. 001-41638) filed with the SEC on March 7, 2023).

Exhibit 4.22 INDEMNIFICATION AGREEMENT THIS INDEMNIFICATION AGREEMENT (this “Agreement”) is made as of March 3, 2023, by and between Thiago da Costa Silva and Ambipar Emergency Response, a Cayman Islands exempted company incorporated with limited liability (the “Company”), and (the “Indemnitee”), a director of the Company. WHEREAS, the Indemnitee has agreed to serve as a director of the Company an

March 7, 2023 EX-4.21

Indemnification Agreement by and between Alessandra Bessa Alves de Melo and the Company, dated as of March 3, 2023 (incorporated by reference to Exhibit 4.21 to the Shell Company Report on Form 20-F (File No. 001-41638) filed with the SEC on March 7, 2023).

Exhibit 4.21 INDEMNIFICATION AGREEMENT THIS INDEMNIFICATION AGREEMENT (this “Agreement”) is made as of March 3, 2023, by and between Alessandra Bessa Alves de Melo and Ambipar Emergency Response, a Cayman Islands exempted company incorporated with limited liability (the “Company”), and (the “Indemnitee”), a director of the Company. WHEREAS, the Indemnitee has agreed to serve as a director of the C

March 7, 2023 EX-4.23

Indemnification Agreement by and between Mariana Loyola Ferreira Sgarbi and the Company, dated as of March 3, 2023 (incorporated by reference to Exhibit 4.23 to the Shell Company Report on Form 20-F (File No. 001-41638) filed with the SEC on March 7, 2023).

Exhibit 4.23 INDEMNIFICATION AGREEMENT THIS INDEMNIFICATION AGREEMENT (this “Agreement”) is made as of March 3, 2023, by and between Mariana Loyola Ferreira Sgarbi and Ambipar Emergency Response, a Cayman Islands exempted company incorporated with limited liability (the “Company”), and (the “Indemnitee”), a director of the Company. WHEREAS, the Indemnitee has agreed to serve as a director of the C

March 7, 2023 EX-4.24

Indemnification Agreement by and between Carlos Augusto Leone Piani and the Company, dated as of March 3, 2023 (incorporated by reference to Exhibit 4.24 to the Shell Company Report on Form 20-F (File No. 001-41638) filed with the SEC on March 7, 2023).

Exhibit 4.24 INDEMNIFICATION AGREEMENT THIS INDEMNIFICATION AGREEMENT (this “Agreement”) is made as of March 3, 2023, by Carlos Augusto Leone Piani and between Ambipar Emergency Response, a Cayman Islands exempted company incorporated with limited liability (the “Company”), and (the “Indemnitee”), a director of the Company. WHEREAS, the Indemnitee has agreed to serve as a director of the Company a

March 7, 2023 EX-15.1

Unaudited Pro Forma Condensed Combined Financial Information of Emergencia and HPX.

Exhibit 15.1 Unaudited Pro Forma Condensed Combined Financial Information Capitalized terms used but not defined herein shall have the meanings as terms defined and included elsewhere in the Report and, if not defined in the Report, in the proxy statement/prospectus dated February 3, 2023 (the “Proxy Statement/Prospectus”) filed by New PubCo with the SEC as part of its Registration Statement on Fo

March 7, 2023 EX-4.27

Indemnification Agreement by and between Rafael Espírito Santo and the Company, dated as of March 3, 2023 (incorporated by reference to Exhibit 4.27 to the Shell Company Report on Form 20-F (File No. 001-41638) filed with the SEC on March 7, 2023).

Exhibit 4.27 INDEMNIFICATION AGREEMENT THIS INDEMNIFICATION AGREEMENT (this “Agreement”) is made as of March 3, 2023, by Rafael Espírito Santo and between Ambipar Emergency Response, a Cayman Islands exempted company incorporated with limited liability (the “Company”), and (the “Indemnitee”), an executive officer of the Company. WHEREAS, the Indemnitee has agreed to serve as an executive officer o

March 7, 2023 EX-4.16

Ambipar Emergency Response 2023 Omnibus Incentive Plan, dated as of March 3, 2023 (incorporated by reference to Exhibit 4.16 to the Shell Company Report on Form 20-F (File No. 001-41638) filed with the SEC on March 7, 2023).

Exhibit 4.16 Ambipar Emergency Response 2023 Omnibus Incentive Plan 1.             Purpose. The purpose of the Ambipar Emergency Response 2023 Omnibus Incentive Plan is to provide a means through which the Company and the other members of the Company Group may attract and retain key personnel, and to provide a means whereby directors, officers, employees, consultants, and advisors of the Company a

March 7, 2023 EX-4.2

First Plan of Merger, by and between HPX and the Company, dated as of March 3, 2023 (incorporated by reference to Exhibit 4.2 to the Shell Company Report on Form 20-F (File No. 001-41638) filed with the SEC on March 7, 2023).

Exhibit 4.2 The Companies Act (As Revised) of the Cayman Islands Plan of Merger This plan of merger (the "Plan of Merger") is made on 3 March 2023 between Ambipar Emergency Response, an exempted company incorporated with limited liability in the Cayman Islands (the "Surviving Company"), and HPX Corp., an exempted company incorporated with limited liability in the Cayman Islands (the "Merging Compa

March 7, 2023 EX-4.25

Indemnification Agreement by and between Victor Almeida and the Company, dated as of March 3, 2023 (incorporated by reference to Exhibit 4.25 to the Shell Company Report on Form 20-F (File No. 001-41638) filed with the SEC on March 7, 2023).

Exhibit 4.25 INDEMNIFICATION AGREEMENT THIS INDEMNIFICATION AGREEMENT (this “Agreement”) is made as of March 3, 2023, by and between Victor Almeida and Ambipar Emergency Response, a Cayman Islands exempted company incorporated with limited liability (the “Company”), and (the “Indemnitee”), a director of the Company. WHEREAS, the Indemnitee has agreed to serve as a director of the Company and in su

March 7, 2023 EX-1.1

Amended and Restated Memorandum and Articles of Association of the Company, dated as of March 3, 2023 (incorporated by reference to Exhibit 1.1 to the Shell Company Report on Form 20-F (File No. 001-41638) filed with the SEC on March 7, 2023).

Exhibit 1.1 THE COMPANIES ACT (AS REVISED) EXEMPTED COMPANY LIMITED BY SHARES AMENDED AND RESTATED MEMORANDUM AND ARTICLES OF ASSOCIATION OF AMBIPAR EMERGENCY RESPONSE (adopted by Special Resolution passed on February 27, 2023 and effective on March 3, 2023) THE COMPANIES ACT (AS REVISED) EXEMPTED COMPANY LIMITED BY SHARES AMENDED AND RESTATED MEMORANDUM OF ASSOCIATION OF AMBIPAR EMERGENCY RESPONS

March 7, 2023 EX-4.29

Indemnification Agreement by and between Pedro Petersen and the Company, dated as of March 3, 2023 (incorporated by reference to Exhibit 4.29 to the Shell Company Report on Form 20-F (File No. 001-41638) filed with the SEC on March 7, 2023).

Exhibit 4.29 INDEMNIFICATION AGREEMENT THIS INDEMNIFICATION AGREEMENT (this “Agreement”) is made as of March 3, 2023, by Pedro Petersen and between Ambipar Emergency Response, a Cayman Islands exempted company incorporated with limited liability (the “Company”), and (the “Indemnitee”), an executive officer of the Company. WHEREAS, the Indemnitee has agreed to serve as an executive officer of the C

March 6, 2023 EX-99.1

Ambipar Emergency Response, leading environmental and industrial solutions provider, is now listed on NYSE American following the conclusion of its business combination with HPX Corp.

EX-99.1 2 tm238595d1ex99-1.htm EXHIBIT 99.1 Exhibit 99.1 Ambipar Emergency Response, leading environmental and industrial solutions provider, is now listed on NYSE American following the conclusion of its business combination with HPX Corp. São Paulo, Brazil - March 6, 2023 – Ambipar Emergency Response (“AMBI”, “Ambipar Response”) announced today that it has successfully concluded its business com

March 6, 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 March, 2023 Commission File Number: 001-416

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, 2023 Commission File Number: 001-41638 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) Avenida Angélica, nº 2346, 5th Floor São Paulo, São Paulo, Brazil

March 3, 2023 8-A12B

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 AMBIPAR EMERGENCY RESPONSE (Exact name of regis

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 AMBIPAR EMERGENCY RESPONSE (Exact name of registrant as specified in its charter) The Cayman Islands Not Applicable (State or other jurisdiction of incorporation or organization) (I.R.S. Employer I

February 3, 2023 425

Ambipar Emergency Response and HPX Corp. (NYSE American: HPX) Announce Effectiveness of Registration Statement and Extraordinary General Meeting Date for Proposed Business Combination

425 1 tm2223223d17425.htm 425 Filed by Ambipar Emergency Response Pursuant to Rule 425 of the Securities Act of 1933, and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: HPX Corp. (SEC File No.: 001-39382) Ambipar Emergency Response and HPX Corp. (NYSE American: HPX) Announce Effectiveness of Registration Statement and Extraordinary General Meeting D

February 3, 2023 424B3

PROXY STATEMENT OF HPX CORP. 1000 N. West Street, Suite 1200 Wilmington, DE 19801 PROSPECTUS FOR UP TO 17,559,044 CLASS A ORDINARY SHARES AND 13,462,500 WARRANTS OF AMBIPAR EMERGENCY RESPONSE NOTICE OF EXTRAORDINARY GENERAL MEETING OF SHAREHOLDERS OF

TABLE OF CONTENTS   Filed Pursuant to Rule 424(b)(3)  Registration Statement No. 333-268795 PROXY STATEMENT OF HPX CORP. 1000 N. West Street, Suite 1200 Wilmington, DE 19801 PROSPECTUS FOR UP TO 17,559,044 CLASS A ORDINARY SHARES AND 13,462,500 WARRANTS OF AMBIPAR EMERGENCY RESPONSE NOTICE OF EXTRAORDINARY GENERAL MEETING OF SHAREHOLDERS OF HPX CORP. TO BE HELD ON FEBRUARY 28, 2023 To the Sharehol

February 1, 2023 CORRESP

AMBIPAR EMERGENCY RESPONSE Avenida Angelica No. 2346, 5th Floor São Paulo, SP – Brazil 01228-200

AMBIPAR EMERGENCY RESPONSE Avenida Angelica No. 2346, 5th Floor São Paulo, SP – Brazil 01228-200 February 1, 2023 VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549 Attention: Steve Lo Raj Rajan Kevin Dougherty Laura Nicholson Re: Ambipar Emergency Response Registration Statement on Form F-4 Filed on December 14, 2022, as ame

January 30, 2023 F-4/A

Main Downside Protection Agreement, dated as of July 6, 2022, as amended and restated as of November 24, 2022, by and among the Company, Ambipar, the Sponsor, the PIPE Investors (other than the Constellation Funds), Genome, Gannett Peek and Cygnus (incorporated by reference to Annex O to the proxy statement/prospectus to the Registration Statement of Form F-4 (File No. 333-268795), filed with the SEC on January 30, 2023).

TABLE OF CONTENTS As filed with the U.S. Securities and Exchange Commission on January 27, 2023 Registration Statement No. 333-268795 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 2 to Form F-4 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 AMBIPAR EMERGENCY RESPONSE (Exact Name of Registrant as Specified in Its Charter) Cayman Islands (Jurisdiction

January 11, 2023 CORRESP

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January 11, 2023 VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549 Re: Ambipar Emergency Response Registration Statement on Form F-4 Filed December 14, 2022 File No. 333-268795 Ladies and Gentlemen: On behalf of Ambipar Emergency Response (the “Company”), we are providing the following responses to the comments made by the s

January 11, 2023 EX-FILING FEES

Calculation of Filing Fee Tables

Exhibit 107.1 Calculation of Filing Fee Tables Form F-4 (Form Type) Ambipar Emergency Response (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered(1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Newly Registered Securitie

January 11, 2023 F-4/A

Power of Attorney (included on signature page to amendment no. 1 of the registration statement).

TABLE OF CONTENTS As filed with the U.S. Securities and Exchange Commission on January 11, 2023 Registration Statement No. 333-268795 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 1 to Form F-4 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 AMBIPAR EMERGENCY RESPONSE (Exact Name of Registrant as Specified in Its Charter) Cayman Islands (Jurisdiction

January 11, 2023 EX-99.8

Representation under Item 8.A.4 of Form 20-F.

Exhibit 99.8 January 11, 2023 VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance 100 F. Street, N.E. Washington, D.C. 20549 Re: Ambipar Emergency Response Registration Statement on Form F-4 Request for Waiver and Representation under Item 8.A.4 of Form 20-F Ladies and Gentlemen: In connection with the filing on the date hereof of Amendment No. 1 to the Registration S

December 16, 2022 425

Ambipar Announces Public Filing of Ambipar Emergency Response on the SEC

425 1 tm2223223d9425.htm 425 Filed by Ambipar Emergency Response Pursuant to Rule 425 of the Securities Act of 1933, and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: HPX Corp. (SEC File No.: 001-39382) On December 14, 2022, Ambipar Participações e Empreendimentos S.A. (“Ambipar”) announced to the market the public filing of Ambipar Emergency Respo

December 14, 2022 EX-10.5

Intercompany Loan Agreement, dated as of July 5, 2022, by and between Ambipar and Emergencia.

Exhibit 10.5 Execution Version INTERCOMPANY LOAN AGREEMENT This Loan Agreement (?Agreement?) is entered into on July 5, 2022, by and among the following parties: on one side, AMBIPAR PARTICIPA??ES E EMPREENDIMENTOS S.A., a company organized under the laws of Brazil, with head office at Avenida Pacaembu, No. 1088, room 09, Pacaembu, in the City of S?o Paulo, State of S?o Paulo, Brazil, Zip Code 012

December 14, 2022 EX-21.1

List of subsidiaries of New PubCo

EX-21.1 9 tm2223223d6ex21-1.htm EXHIBIT 21.1 Exhibit 21.1 Subsidiaries of New PubCo The following list of subsidiaries applies after completion of the Business Combination: Legal Name Jurisdiction of Incorporation Ambipar Atendimento Médico Hospitalar Ltda. Brazil Ambipar C-Safety Comércio, Indústria e Serviços Ltda. Brazil Ambipar Flyone Serviço Aéreo Especializado, Comércio e Serviço Ltda. Brazi

December 14, 2022 CORRESP

* * * * *

CORRESP 1 filename1.htm December 14, 2022 VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549 Re: Ambipar Emergency Response Amendment No. 1 to Draft Registration Statement on Form F-4 Confidentially Submitted November 2, 2022 CIK No. 0001937441 Ladies and Gentlemen: On behalf of Ambipar Emergency Response (the “Company”), we

December 14, 2022 EX-99.3

Consent of Izabel Cristina Andriotti Cruz de Oliveira to be named as a director.

EX-99.3 15 tm2223223d6ex99-3.htm EXHIBIT 99.3 Exhibit 99.3 Consent In connection with the filing by Ambipar Emergency Response of the Registration Statement on Form F-4 with the Securities and Exchange Commission under the Securities Act of 1933, as amended (the “Securities Act”), I hereby consent, pursuant to Rule 438 of the Securities Act, to being named in the Registration Statement, including

December 14, 2022 EX-99.6

Consent of Mariana Loyola Ferreira Sgarbi to be named as a director.

EX-99.6 18 tm2223223d6ex99-6.htm EXHIBIT 99.6 Exhibit 99.6 Consent In connection with the filing by Ambipar Emergency Response of the Registration Statement on Form F-4 with the Securities and Exchange Commission under the Securities Act of 1933, as amended (the “Securities Act”), I hereby consent, pursuant to Rule 438 of the Securities Act, to being named in the Registration Statement, including

December 14, 2022 EX-99.8

Consent of Victor Almeida to be named as a director.

EX-99.8 20 tm2223223d6ex99-8.htm EXHIBIT 99.8 Exhibit 99.8 Consent In connection with the filing by Ambipar Emergency Response of the Registration Statement on Form F-4 with the Securities and Exchange Commission under the Securities Act of 1933, as amended (the “Securities Act”), I hereby consent, pursuant to Rule 438 of the Securities Act, to being named in the Registration Statement, including

December 14, 2022 EX-99.7

Consent of Carlos Piani to be named as a director.

EX-99.7 19 tm2223223d6ex99-7.htm EXHIBIT 99.7 Exhibit 99.7 Consent In connection with the filing by Ambipar Emergency Response of the Registration Statement on Form F-4 with the Securities and Exchange Commission under the Securities Act of 1933, as amended (the “Securities Act”), I hereby consent, pursuant to Rule 438 of the Securities Act, to being named in the Registration Statement, including

December 14, 2022 EX-10.38

Purchase and Sale Agreement by and among the WOB Sellers, Seacor and Ambipar Holding USA, Inc., dated as of September 13, 2022.

Exhibit 10.38 EXECUTION VERSION PURCHASE AND SALE AGREEMENT by and among ORM HOLDINGS INC., ORM HOLDINGS II LLC, SEACOR HOLDINGS INC., and AMBIPAR HOLDING USA, INC. Dated as of September 13, 2022 TABLE OF CONTENTS Page Article I DEFINITIONS 1.1 Defined Terms 1 1.2 Other Definitions 10 Article II THE SALE 2.1 The Sale 11 2.2 Purchase Price 11 2.3 USVI Payments 11 2.4 Closing 13 2.5 Closing Adjustme

December 14, 2022 EX-99.1

Form of Proxy Card for the Extraordinary General Meeting.

Exhibit 99.1 YOUR VOTE IS IMPORTANT. PLEASE VOTE TODAY. Vote by Internet - QUICK EASY IMMEDIATE - 24 Hours a Day, 7 Days a Week or by Mail HPX CORP. Your Internet vote authorizes the named proxies to vote your shares in the same manner as if you marked, signed and returned your proxy card. Votes submitted electronically over the Internet must be received by 11:59 p.m., Eastern Time, on [?], 2023.

December 14, 2022 EX-99.4

Consent of Alessandra Bessa Alves de Melo to be named as a director.

Exhibit 99.4 Consent In connection with the filing by Ambipar Emergency Response of the Registration Statement on Form F-4 with the Securities and Exchange Commission under the Securities Act of 1933, as amended (the ?Securities Act?), I hereby consent, pursuant to Rule 438 of the Securities Act, to being named in the Registration Statement, including any and all amendments and supplements thereto

December 14, 2022 EX-10.35

Securities Assignment Agreement, dated as of June 25, 2020, among Sponsor and Insiders.

Exhibit 10.35 EXECUTION VERSION SECURITIES ASSIGNMENT AGREEMENT This Securities Assignment Agreement (this ?Agreement?), dated as of June 25, 2020, is made and entered into by and among HPX Capital Partners LLC (the ?Sponsor?), Marcos Vinicius Bernardes Peigo, F?bio Mour?o, Marco Racy Kheirallah and Maria Salete Garcia Pinheiro (together, the ?Recipients? and each, a ?Recipient?). WHEREAS, the Spo

December 14, 2022 EX-99.2

Consent of Tércio Borlenghi Junior to be named as a director.

EX-99.2 14 tm2223223d6ex99-2.htm EXHIBIT 99.2 Exhibit 99.2 Consent In connection with the filing by Ambipar Emergency Response of the Registration Statement on Form F-4 with the Securities and Exchange Commission under the Securities Act of 1933, as amended (the “Securities Act”), I hereby consent, pursuant to Rule 438 of the Securities Act, to being named in the Registration Statement, including

December 14, 2022 EX-10.18

Form of Ambipar Emergency Response 2022 Omnibus Incentive Plan.

Exhibit 10.18 FORM of Ambipar Emergency Response 2022 Omnibus Incentive Plan 1. Purpose. The purpose of the Ambipar Emergency Response 2022 Omnibus Incentive Plan is to provide a means through which the Company and the other members of the Company Group may attract and retain key personnel, and to provide a means whereby directors, officers, employees, consultants, and advisors of the Company and

December 14, 2022 EX-10.36

Resignation Letter of Fabio Mourão, dated as of December 3, 2020.

EX-10.36 7 tm2223223d6ex10-36.htm EXHIBIT 10.36 Exhibit 10.36 HPX Corp. (the "Company") 1000 N. West Street, Suite 1200 Wilmington, Delaware 19801 For the attention of: The Board of Directors of the Company December 3, 2020 Dear Members of the Board: I hereby resign as a director of the Company, member of the Audit Committee and chairman of the Nominating and Corporate Governance Committee with ef

December 14, 2022 F-4

As filed with the U.S. Securities and Exchange Commission on December 14, 2022

F-4 1 tm2223223-5f4.htm F-4 TABLE OF CONTENTS As filed with the U.S. Securities and Exchange Commission on December 14, 2022 Registration Statement No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form F-4 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 AMBIPAR EMERGENCY RESPONSE (Exact Name of Registrant as Specified in Its Charter) Cayman Islands (Jurisdic

December 14, 2022 EX-FILING FEES

Calculation of Filing Fee Tables

EX-FILING FEES 21 tm2223223d6ex-filingfees.htm EX-FILING FEES Exhibit 107.1 Calculation of Filing Fee Tables Form F-4 (Form Type) Ambipar Emergency Response (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered(1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price

December 14, 2022 EX-99.5

Consent of Thiago da Costa Silva to be named as a director.

EX-99.5 17 tm2223223d6ex99-5.htm EXHIBIT 99.5 Exhibit 99.5 Consent In connection with the filing by Ambipar Emergency Response of the Registration Statement on Form F-4 with the Securities and Exchange Commission under the Securities Act of 1933, as amended (the “Securities Act”), I hereby consent, pursuant to Rule 438 of the Securities Act, to being named in the Registration Statement, including

November 10, 2022 425

Ambipar Announces Third Quarter of 2022 Results

425 1 tm2230180d1425.htm 425 Filed by Ambipar Emergency Response Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: HPX Corp. (SEC File No.: 001-39382) On November 7, 2022, Ambipar Participações e Empreendimentos S.A. (“Ambipar”) announced its results for the third quarter of 2022. Excerpts of this

November 2, 2022 DRS/A

As confidentially submitted to the U.S. Securities and Exchange Commission on November 2, 2022. This draft registration statement has not been publicly filed with the U.S. Securities and Exchange Commission and all information herein remains strictly

DRS/A 1 filename1.htm TABLE OF CONTENTS As confidentially submitted to the U.S. Securities and Exchange Commission on November 2, 2022. This draft registration statement has not been publicly filed with the U.S. Securities and Exchange Commission and all information herein remains strictly confidential. Registration Statement No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

November 2, 2022 EX-10.35

PURCHASE AND SALE AGREEMENT by and among ORM HOLDINGS INC., ORM HOLDINGS II LLC, SEACOR HOLDINGS INC., AMBIPAR HOLDING USA, INC. Dated as of September 13, 2022 TABLE OF CONTENTS

EX-10.35 3 filename3.htm Exhibit 10.35 EXECUTION VERSION PURCHASE AND SALE AGREEMENT by and among ORM HOLDINGS INC., ORM HOLDINGS II LLC, SEACOR HOLDINGS INC., and AMBIPAR HOLDING USA, INC. Dated as of September 13, 2022 TABLE OF CONTENTS Page Article I DEFINITIONS 1.1 Defined Terms 1 1.2 Other Definitions 10 Article II THE SALE 2.1 The Sale 11 2.2 Purchase Price 11 2.3 USVI Payments 11 2.4 Closin

November 1, 2022 DRSLTR

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DRSLTR 1 filename1.htm November 2, 2022 VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549 Re: Ambipar Emergency Response Draft Registration Statement on Form F-4 Confidentially Submitted August 31, 2022 CIK No. 0001937441 Ladies and Gentlemen: On behalf of Ambipar Emergency Response (the “Company”), we are providing the foll

October 26, 2022 425

Ambipar’s Announcement to the Market (free English translation from Portuguese)

425 1 tm2228938d1425.htm 425 Filed by Ambipar Emergency Response Pursuant to Rule 425 of the Securities Act of 1933, and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: HPX Corp. (SEC File No.: 001-39382) On October 24, 2022, Ambipar Participações e Empreendimentos S.A. (“Ambipar”) and Witt O’Brien’s, LLC (“Witt O’Brien’s”) announced the completion o

October 3, 2022 425

Filed by Ambipar Emergency Response

425 1 tm2227209d1425.htm 425 Filed by Ambipar Emergency Response Pursuant to Rule 425 of the Securities Act of 1933, and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: HPX Corp. (SEC File No.: 001-39382) Ambipar and HPX Corp. Transaction September 2022 Disclaimer This presentation (this “Presentation”) is provided for informational purposes only and

September 15, 2022 425

Ambipar Market Announcement Clarifications About News Published by the Brazilian Media

Filed by Ambipar Emergency Response Pursuant to Rule 425 of the Securities Act of 1933, and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: HPX Corp.

September 15, 2022 425

Ambipar Announces Acquisition of Witt O'Brien's

Filed by Ambipar Emergency Response Pursuant to Rule 425 of the Securities Act of 1933, and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: HPX Corp.

August 31, 2022 DRS

As confidentially submitted to the Securities and Exchange Commission on August 31, 2022 This registration statement has not been publicly filed with the U.S. Securities and Exchange Commission and all information herein remains strictly confidential

DRS 1 filename1.htm TABLE OF CONTENTS As confidentially submitted to the Securities and Exchange Commission on August 31, 2022 This registration statement has not been publicly filed with the U.S. Securities and Exchange Commission and all information herein remains strictly confidential. Registration Statement No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form F

August 12, 2022 425

Ambipar Group Announces Second Quarter of 2022 Results

425 1 tm2223287d1425.htm 425 Filed by Ambipar Emergency Response Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: HPX Corp. (SEC File No.: 001-39382) On August 11, 2022, Ambipar Empreendimentos e Participações S.A. announced its results for the second quarter of 2022. Excerpts of this announcement

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