TRS / TriMas Corporation - تصريحات هيئة الأوراق المالية والبورصات، التقرير السنوي، بيان الوكيل

TRIMAS REPORTS SECOND QUARTER 2025 RESULTS Aerospace Sales Up 32.5%; Company Raises 2025 Full-year Earnings Outlook

TRIMAS REPORTS SECOND QUARTER 2025 RESULTS Aerospace Sales Up 32.5%; Company Raises 2025 Full-year Earnings Outlook •Second quarter diluted EPS of $0.41, with adjusted diluted EPS of $0.61, up 41.9% •Second quarter operating profit of $27.1 million, with adjusted operating profit of $31.8 million, up 53.2% •Consolidated sales growth of 14.2%, with organic growth, net of currency impact, of 13.4% B

FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 29, 2025 TRIMAS CORPORATION (Exact name of registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 29, 2025 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorpor

Severance Agreement between TriMas Corporation and Thomas J. Snyder dated as of June 23, 2025. **

Exhibit 10.5 SEVERANCE AGREEMENT THIS SEVERANCE AGREEMENT (this “Agreement”), dated as of June 23, 2025 (the “Effective Date”), is made and entered into by and between TriMas Corporation, a Delaware corporation (the “Company”), and Thomas J. Snyder (the “Executive”). WITNESSETH: WHEREAS, the Executive is an executive of the Company and is expected to make major contributions to the growth and fina

Indemnification Agreement between TriMas Corporation and Thomas J. Snyder dated as of June 23, 2025. **

Exhibit 10.6 INDEMNIFICATION AGREEMENT THIS INDEMNIFICATION AGREEMENT (the “Agreement”) is effective as of June 23, 2025, by and between TriMas Corporation, a Delaware corporation (the “Company”), and Thomas J. Snyder (the “Indemnitee”). WHEREAS, the Indemnitee is serving the Company in a “Corporate Status,” as defined herein; WHEREAS, it is reasonable, prudent and necessary for the Company contra

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended June 30, 2025 Or ☐ Transition Report

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended June 30, 2025 Or ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period from to . Commission file number 00

Restricted Stock Units Agreement (Interim CFO) (One-Year Cliff Vest) under the 2023 Equity and Incentive Compensation Plan, dated as of March 20, 2025, by and between TriMas Corporation and Teresa M. Finley.**

Exhibit 10.1 Restricted Stock Units Award One-Year (Cliff) Vest (Interim CFO) TRIMAS CORPORATION 2023 EQUITY AND INCENTIVE COMPENSATION PLAN RESTRICTED STOCK UNITS AGREEMENT TriMas Corporation (the “Company”), as permitted by the TriMas Corporation 2023 Equity and Incentive Compensation Plan (“Plan”), and as approved by the Committee, has granted to the individual listed below (“Grantee”), a Restr

Offer Letter between TriMas Corporation and Thomas Snyder dated as of June 3, 2025. **

Exhibit 10.2 CONFIDENTIAL June 3, 2025 Thomas Snyder [***] VIA E-MAIL DELIVERY Dear Thomas: On behalf of the Board of Directors (the “Board”) of TriMas Corporation (the “Company”), we are delighted to extend to you an offer of employment as President and Chief Executive Officer (“CEO”) of the Company (the “Offer”). If you accept this Offer by countersigning this letter agreement (“Offer Letter”) a

Non-Qualified Stock Option Inducement Award Agreement, dated as of June 24, 2025, by and between the Registrant and Thomas Snyder (filed herewith)

Exhibit 4.5 Inducement NQ Stock Option Agreement Five-Year (Ratable) Vest TRIMAS CORPORATION NON-QUALIFIED STOCK OPTION INDUCEMENT AWARD AGREEMENT TriMas Corporation, a Delaware corporation (the “Company”), and as approved by the Board of Directors (the “Board”) of the Company and the Compensation Committee (the “Committee”) of the Board, has granted to the individual listed below (“Optionee”) a n

Restricted Stock Units Inducement Award Agreement, dated as of June 24, 2025, by and between the Registrant and Thomas Snyder (filed herewith)

Exhibit 4.4 Inducement Restricted Stock Units Award Three-Year (Ratable) Vest TRIMAS CORPORATION RESTRICTED STOCK UNITS INDUCEMENT AWARD AGREEMENT TriMas Corporation, a Delaware corporation (the “Company”), and as approved by the Board of Directors (the “Board”) of the Company and the Compensation Committee (the “Committee”) of the Board, has granted to the individual listed below (“Grantee”) a re

Calculation of Filing Fee Tables (filed herewith)

EXHIBIT 107 Calculation of Filing Fee Tables Form S-8 (Form Type) TriMas Corporation (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Equity Common Stock, $0.

As filed with the Securities and Exchange Commission on June 24, 2025

As filed with the Securities and Exchange Commission on June 24, 2025 Registration No.

Powers of Attorney (filed herewith)

EXHIBIT 24.1 TRIMAS CORPORATION REGISTRATION STATEMENT ON FORM S-8 POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that each of the undersigned officers and directors of TriMas Corporation, a Delaware corporation (the “Registrant”), hereby constitutes and appoints Jill S. Stress and Jodi F. Robin, or either of them, each acting alone, as the true and lawful attorney-in-fact or agent, or atto

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) June 3, 2025 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorpora

Conflict Minerals Report of TriMas Corporation

Exhibit 1.01 TriMas Corporation Conflict Minerals Report For the Reporting Period January 1, 2024 to December 31, 2024 TriMas Corporation (TriMas or the Company) is filing this Conflict Minerals Report (CMR) for the reporting period January 1, 2024 to December 31, 2024 (the Reporting Period) as an exhibit to its Form SD pursuant to Rule 13p-1 under the Securities Exchange Act of 1934 (the Rule). T

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT TriMas Corporation (Exact name of registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT TriMas Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation) 001-10716 (Commission File Number) 38-2687639 (IRS Employer Identification No.) 38505 Woodward Avenue, Suite 200 Bloomfield Hills, Michigan (Address of principa

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 14, 2025 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorpora

Transition and Separation Agreement between TriMas Corporation and Thomas A. Amato dated January 4, 2025.**

Exhibit 10.6 TRANSITION AND SEPARATION AGREEMENT This Transition and Separation Agreement (this “Transition Agreement”), by and between TriMas Corporation (the “Company”) and Thomas A. Amato (“you” and similar words), and effective as of January 4, 2025 (the “Effective Date”), memorializes certain terms of your transition and separation from the Company and its subsidiaries. This Transition Agreem

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended March 31, 2025 Or ☐ Transition Report

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended March 31, 2025 Or ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period from to . Commission file number 0

Form of Restricted Stock Units Agreement (Three-Year Ratable Vest) - 2025 LTI - under the 2023 Equity and Incentive Compensation Plan.**

Exhibit 10.3 Restricted Stock Units Award Three-Year (Ratable) Vest TRIMAS CORPORATION 2023 EQUITY AND INCENTIVE COMPENSATION PLAN RESTRICTED STOCK UNITS AGREEMENT TriMas Corporation (the “Company”), as permitted by the TriMas Corporation 2023 Equity and Incentive Compensation Plan (“Plan”), and as provided for by the Committee, has granted to the individual listed below (“Grantee”), a Restricted

Form of Performance Stock Units Agreement - 2025 LTI - under the 2023 Equity and Incentive Compensation Plan.**

Exhibit 10.2 1/1/25 – 12/31/27 Award Performance Stock Units TRIMAS CORPORATION 2023 EQUITY AND INCENTIVE COMPENSATION PLAN PERFORMANCE STOCK UNITS AGREEMENT TriMas Corporation (the “Company”), as permitted by the TriMas Corporation 2023 Equity and Incentive Compensation Plan (“Plan”), and as provided for by the Committee, has granted to the individual listed below (“Grantee”), the opportunity to

Form of February 2025 Executive Retention Award letter agreement.**

Exhibit 10.7 To: [] Date: February 12, 2025 From: Teresa Finley, Chair of the Compensation Committee Re: Executive Retention Award You are important to the ongoing success of TriMas Corporation (the “Company”). The Company is hereby offering you a retention bonus (“Retention Bonus”) if you remain employed with the Company through the Vesting Date (as defined below), according to the conditions set

TRIMAS REPORTS FIRST QUARTER 2025 RESULTS

TRIMAS REPORTS FIRST QUARTER 2025 RESULTS •First quarter diluted EPS of $0.30, with adjusted diluted EPS(1) of $0.46, up 24.3% •First quarter operating profit of $21.8 million, with adjusted operating profit(2) of $24.4 million, up 50.2% •Consolidated sales growth of 6.4% with quarterly sales growth of 32.5% within Aerospace BLOOMFIELD HILLS, Michigan, April 29, 2025 - TriMas (NASDAQ: TRS) today a

Form of Restricted Stock Units Agreement (One-Year Cliff Vest) - 2025 LTI - under the 2023 Equity and Incentive Compensation Plan.**

Exhibit 10.4 Restricted Stock Units Award One-Year (Cliff) Vest TRIMAS CORPORATION 2023 EQUITY AND INCENTIVE COMPENSATION PLAN RESTRICTED STOCK UNITS AGREEMENT TriMas Corporation (the “Company”), as permitted by the TriMas Corporation 2023 Equity and Incentive Compensation Plan (“Plan”), and as provided for by the Committee, has granted to the individual listed below (“Grantee”), a Restricted Stoc

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) April 29, 2025 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorpo

Form of Restricted Stock Units Agreement (Two-Year Ratable Vest) - 2025 LTI - under the 2023 Equity and Incentive Compensation Plan.**

Exhibit 10.5 Retention Restricted Stock Units Award Two-Year (Ratable) Vest TRIMAS CORPORATION 2023 EQUITY AND INCENTIVE COMPENSATION PLAN RESTRICTED STOCK UNITS AGREEMENT TriMas Corporation (the “Company”), as permitted by the TriMas Corporation 2023 Equity and Incentive Compensation Plan (“Plan”), and as provided for by the Committee, has granted to the individual listed below (“Grantee”), a Res

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) March 31, 2025 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorpo

Eighth Amendment to the Credit Agreement, dated as of March 31, 2025, by and among TriMas Corporation, TriMas Company LLC

Exhibit 10.1 Execution Version EIGHTH AMENDMENT This EIGHTH AMENDMENT, dated as of March 31, 2025 (collectively, this “Amendment”), among TRIMAS CORPORATION, a Delaware corporation (“Holdings”), TRIMAS COMPANY LLC, a Delaware limited liability company (the “Parent Borrower”), the Subsidiary Loan Parties party hereto, the Lenders party hereto and JPMORGAN CHASE BANK, N.A., as administrative agent (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amend

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amend

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) March 14, 2025 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorpo

TRIMAS ANNOUNCES INTERIM CHIEF FINANCIAL OFFICER

TRIMAS ANNOUNCES INTERIM CHIEF FINANCIAL OFFICER BLOOMFIELD HILLS, Michigan, March 20, 2025 – TriMas (NASDAQ: TRS) today announced that Scott Mell, its Chief Financial Officer (CFO), will be leaving the Company effective March 20, 2025, to pursue another opportunity.

Federal Securities Law Compliance Program.

Exhibit 19.1 Federal Securities Law Compliance Program Memorandum To: All Section 16 Directors and Officers From: Jodi Robin, General Counsel and Secretary This memorandum provides a brief overview of (i) TriMas Corporation’s (the “Company”) policy concerning insider trading and the pre-clearance of trading transactions, (ii) the primary responsibilities of the members of the Company’s Board of Di

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K (Mark One) ☒ 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 PUR

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K (Mark One) ☒ 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 EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-10716 TRIMAS CORPORAT

TriMas Corporation Subsidiary List.

Exhibit 21.1 TriMas Corporation Subsidiary List In accordance with Item 601(b)(21)(ii) of Regulation S-K, the following list of subsidiaries of TriMas Corporation excludes certain subsidiaries that, considered in the aggregate as a single subsidiary, did not constitute a significant subsidiary (as defined in Rule 1-02(w) of Regulation S-X) at December 31, 2024. Subsidiary name Jurisdiction of inco

TRIMAS REPORTS FOURTH QUARTER AND FULL YEAR 2024 RESULTS

TRIMAS REPORTS FOURTH QUARTER AND FULL YEAR 2024 RESULTS BLOOMFIELD HILLS, Michigan, February 27, 2025 - TriMas (NASDAQ: TRS) today announced financial results for the fourth quarter and full year ended December 31, 2024.

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 27, 2025 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of inco

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 11, 2025 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of inco

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 10, 2025 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of inco

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) January 4, 2025 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorp

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended September 30, 2024 Or ☐ Transition Re

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended September 30, 2024 Or ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period from to . Commission file numb

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 4, 2024 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incor

TRIMAS REPORTS THIRD QUARTER 2024 RESULTS Continued Organic Sales Growth in its Two Largest Segments

TRIMAS REPORTS THIRD QUARTER 2024 RESULTS Continued Organic Sales Growth in its Two Largest Segments BLOOMFIELD HILLS, Michigan, November 4, 2024 - TriMas (NASDAQ: TRS) today announced financial results for the third quarter ended September 30, 2024.

TRS / TriMas Corporation / Trend International Holding AG - TRIMAS CORPORATION Activist Investment

SC 13D 1 p24-2960sc13d.htm TRIMAS CORPORATION SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 TriMas Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 896215209 (CUSIP Number) Trend International Holding AG Wiesenstrasse 9 8008 Zürich, Switzerland +41 44 268 69 38 (Name, Address and T

Joint Filing Agreement, dated October 15, 2024 PURSUANT TO RULE 13d-1(k)

EX-99.1 2 p24-2960exhibit99.htm JOINT FILING AGREEMENT Exhibit 99.1 Joint Filing Agreement, dated October 15, 2024 PURSUANT TO RULE 13d-1(k) The undersigned acknowledge and agree that the foregoing statement on Schedule 13D is filed on behalf of each of the undersigned and that all subsequent amendments to such statement on Schedule 13D may be filed on behalf of each of the undersigned without the

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended June 30, 2024 Or ☐ Transition Report

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended June 30, 2024 Or ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period from to . Commission file number 00

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 30, 2024 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorpor

TRIMAS REPORTS SECOND QUARTER 2024 RESULTS Accelerated Organic Sales Growth in its Two Largest Segments

TRIMAS REPORTS SECOND QUARTER 2024 RESULTS Accelerated Organic Sales Growth in its Two Largest Segments BLOOMFIELD HILLS, Michigan, July 30, 2024 - TriMas (NASDAQ: TRS) today announced financial results for the second quarter ended June 30, 2024.

Conflict Minerals Report of TriMas Corporation

Exhibit 1.01 TriMas Corporation Conflict Minerals Report For the Reporting Period January 1, 2023 to December 31, 2023 TriMas Corporation (TriMas or the Company) is filing this Conflict Minerals Report (CMR) for the reporting period January 1, 2023 to December 31, 2023 (the Reporting Period) as an exhibit to its Form SD pursuant to Rule 13p-1 under the Securities Exchange Act of 1934 (the Rule). T

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT TriMas Corporation (Exact name of registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT TriMas Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation) 001-10716 (Commission File Number) 38-2687639 (IRS Employer Identification No.) 38505 Woodward Avenue, Suite 200 Bloomfield Hills, Michigan (Address of principa

TRS / TriMas Corporation / Group Da-Zen, S.L.U. Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 TRIMAS CORPORATION (Name of Issuer) Common stock, par value $0.01 per share (Title of Class of Securities) 896215209 (CUSIP Number) May 3, 2024** (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 14, 2024 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorpora

Form of Restricted Stock Units Agreement (Three-Year Ratable Vest) - 2024 LTI - under the 2023 Equity and Incentive Compensation Plan.*

Exhibit 10.2 Restricted Stock Units Award Three-Year (Ratable) Vest TRIMAS CORPORATION 2023 EQUITY AND INCENTIVE COMPENSATION PLAN RESTRICTED STOCK UNITS AGREEMENT TriMas Corporation (the “Company”), as permitted by the TriMas Corporation 2023 Equity and Incentive Compensation Plan (“Plan”), and as provided for by the Committee, has granted to the individual listed below (“Grantee”), a Restricted

Form of Restricted Stock Units Agreement (Board of Directors) (One-Year Vest) - 2024 LTI - under the 2023 Equity and Incentive Compensation Plan.*

Exhibit 10.3 Restricted Stock Units Award To Board of Directors TRIMAS CORPORATION 2023 EQUITY AND INCENTIVE COMPENSATION PLAN RESTRICTED STOCK UNITS AGREEMENT TriMas Corporation (the “Company”), as permitted by the TriMas Corporation 2023 Equity and Incentive Compensation Plan (“Plan”), and as approved by the Committee, has granted to the individual listed below (“Grantee”), a Restricted Stock Un

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) April 30, 2024 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorpo

Form of Performance Stock Units Agreement - 2024 LTI - under the 2023 Equity and Incentive Compensation Plan.*

Exhibit 10.1 1/1/24 – 12/31/26 Award Performance Stock Units TRIMAS CORPORATION 2023 EQUITY AND INCENTIVE COMPENSATION PLAN PERFORMANCE STOCK UNITS AGREEMENT TriMas Corporation (the “Company”), as permitted by the TriMas Corporation 2023 Equity and Incentive Compensation Plan (“Plan”), and as provided for by the Committee, has granted to the individual listed below (“Grantee”), the opportunity to

TRIMAS REPORTS FIRST QUARTER 2024 RESULTS Reaffirms Full Year 2024 Guidance

TRIMAS REPORTS FIRST QUARTER 2024 RESULTS Reaffirms Full Year 2024 Guidance BLOOMFIELD HILLS, Michigan, April 30, 2024 - TriMas (NASDAQ: TRS) today announced financial results for the first quarter ended March 31, 2024.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended March 31, 2024 Or ☐ Transition Report

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended March 31, 2024 Or ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period from to . Commission file number 0

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amend

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amend

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) March 18, 2024 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorpo

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 29, 2024 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of inco

TriMas Corporation Additional Information Regarding Special Items Impacting Reported GAAP Financial Measures (Unaudited - dollars in thousands, except share and per share amounts) 2023 quarterly periods ended Year ended March 31 June 30 September 30

Exhibit 99.2 TriMas Corporation Additional Information Regarding Special Items Impacting Reported GAAP Financial Measures (Unaudited - dollars in thousands, except share and per share amounts) 2023 quarterly periods ended Year ended March 31 June 30 September 30 December 31 December 31, 2023 Net income, as reported $4,910 $11,020 $16,490 $7,940 $40,360 Special Items to consider in evaluating quali

TriMas Corporation Subsidiary List.

Exhibit 21.1 TriMas Corporation Subsidiary List In accordance with Item 601(b)(21)(ii) of Regulation S-K, the following list of subsidiaries of TriMas Corporation excludes certain subsidiaries that, considered in the aggregate as a single subsidiary, did not constitute a significant subsidiary (as defined in Rule 1-02(w) of Regulation S-X) at December 31, 2023. Subsidiary name Jurisdiction of inco

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K (Mark One) ☒ 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 PUR

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K (Mark One) ☒ 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 EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-10716 TRIMAS CORPORAT

TRIMAS REPORTS FOURTH QUARTER AND FULL YEAR 2023 RESULTS Company Achieves 7.5% Growth in the Packaging Segment in Fourth Quarter

TRIMAS REPORTS FOURTH QUARTER AND FULL YEAR 2023 RESULTS Company Achieves 7.5% Growth in the Packaging Segment in Fourth Quarter BLOOMFIELD HILLS, Michigan, February 29, 2024 - TriMas (NASDAQ: TRS) today announced financial results for the fourth quarter and full year ended December 31, 2023. TriMas Highlights •Achieved quarterly net sales of $209.6 million, or growth of 3.1%, as compared to the p

Compensation Clawback Policy

Exhibit 97 TRIMAS CORPORATION Compensation Clawback Policy Effective October 2, 2023 Purpose As required pursuant to the listing standards of The NASDAQ Stock Market (the “Stock Exchange”), Section 10D of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and Rule 10D-1 under the Exchange Act, the Board of Directors (the “Board”) of TriMas Corporation (the “Company”) has adopted this Compensation Clawback Policy (the “Policy”) to empower the Company to recover Covered Compensation (as defined below) erroneously awarded to a Covered Officer (as defined below) in the event of an Accounting Restatement (as defined below).

TRS / TriMas Corporation / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 12)* Name of issuer: TriMas Corp Title of Class of Securities: Common Stock CUSIP Number: 896215209 Date of Event Which Requires Filing of this Statement: December 29, 2023 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Rule 1

TRS / TriMas Corporation / DIMENSIONAL FUND ADVISORS LP - SEC SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 7 )* TriMas Corp (Name of Issuer) Common Stock (Title of Class of Securities) 896215209 (CUSIP Number) December 29, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule i

TRS / TriMas Corporation / PZENA INVESTMENT MANAGEMENT LLC - SC 13G Passive Investment

SC 13G 1 trimascorp-13gdec20.htm SC 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 TriMas Corp (Name of Issuer) COMMON STOCK (Title of Class of Securities) 896215209 (CUSIP Number) December 31, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to w

TRS / TriMas Corporation / WELLINGTON MANAGEMENT GROUP LLP - SEC SCHEDULE 13G Passive Investment

SC 13G/A 1 SEC13GFiling.htm SEC SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 9 )* TRIMAS CORPORATION (Name of Issuer) Common Stock (Title of Class of Securities) 896215209 (CUSIP Number) December 29, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to

TRS / TriMas Corporation / Allspring Global Investments Holdings, LLC Passive Investment

SC 13G/A 1 Trimas20231231.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2) TRIMAS CORP (Name of Issuer) COM (Title of Class of Securities) 896215209 (CUSIP Number) December 31, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to wh

TRIMAS REPORTS THIRD QUARTER 2023 RESULTS Achieves 7.7% Net Sales Growth in the Quarter

TRIMAS REPORTS THIRD QUARTER 2023 RESULTS Achieves 7.7% Net Sales Growth in the Quarter BLOOMFIELD HILLS, Michigan, October 26, 2023 - TriMas (NASDAQ: TRS) today announced financial results for the third quarter ended September 30, 2023. TriMas Third Quarter Highlights •Achieved net sales of $235.3 million, or growth of 7.7%, compared to the prior year quarter •Improved margin levels within the Tr

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 26, 2023 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incor

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended September 30, 2023 Or ☐ Transition Re

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended September 30, 2023 Or ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period from to . Commission file numb

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 24, 2023 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorpor

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 27, 2023 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorpor

Seventh Amendment to the Credit Agreement, dated as of April 7, 2023, by and among TriMas Corporation, TriMas Company LLC and JPMorgan Chase Bank, N.A., as Administrative Agent, and the various lenders from time to time thereto, incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q filed on July 27, 2023.**

Exhibit 10.1 Execution Version SEVENTH AMENDMENT SEVENTH AMENDMENT, dated as of April 7, 2023 (this “Agreement”), to the CREDIT AGREEMENT, dated as of October 16, 2013 (as amended, amended and restated, supplemented or otherwise modified from time to time, including, without limitation, by that certain Replacement Facility Amendment dated as of June 30, 2015, that certain Foreign Subsidiary Borrow

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended June 30, 2023 Or ☐ Transition Report

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended June 30, 2023 Or ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period from to . Commission file number 00

TRIMAS REPORTS SECOND QUARTER 2023 RESULTS

EX-99.1 2 trs06302023xexhibit991.htm EX-99.1 TRIMAS REPORTS SECOND QUARTER 2023 RESULTS BLOOMFIELD HILLS, Michigan, July 27, 2023 - TriMas (NASDAQ: TRS) today announced financial results for the second quarter ended June 30, 2023. TriMas Highlights •Increased second quarter net sales in TriMas Specialty Products and TriMas Aerospace groups by 33.7% and 26.2%, respectively, while maintaining strong

Conflict Minerals Report of TriMas Corporation

Exhibit 1.01 TriMas Corporation Conflict Minerals Report For the Reporting Period January 1, 2022 to December 31, 2022 TriMas Corporation (TriMas or the Company) is filing this Conflict Minerals Report (CMR) for the reporting period January 1, 2022 to December 31, 2022 (the Reporting Period) as an exhibit to its Form SD pursuant to Rule 13p-1 under the Securities Exchange Act of 1934 (the Rule). T

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT TriMas Corporation (Exact name of registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT TriMas Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation) 001-10716 (Commission File Number) 38-2687639 (IRS Employer Identification No.) 38505 Woodward Avenue, Suite 200 Bloomfield Hills, Michigan (Address of principa

Powers of Attorney (filed herewith)

EXHIBIT 24.1 TRIMAS CORPORATION REGISTRATION STATEMENT ON FORM S-8 POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that each of the undersigned officers and directors of TriMas Corporation, a Delaware corporation (the “Registrant”), hereby constitutes and appoints Thomas A. Amato, Scott A. Mell, Jodi Robin and Jill Stress, or any of them, each acting alone, as the true and lawful attorney-in

Calculation of Filing Fee Tables (filed herewith)

EXHIBIT 107 Calculation of Filing Fee Tables Form S-8 (Form Type) TriMas Corporation (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)(2) Proposed Maximum Offering Price Per Unit (3) Maximum Aggregate Offering Price (3) Fee Rate Amount of Registration Fee Equity Common Stock, $0.

As filed with the Securities and Exchange Commission on May 15, 2023

As filed with the Securities and Exchange Commission on May 15, 2023 Registration No.

TriMas Corporation 2023 Equity and Incentive Compensation Plan, incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on May 11, 2023.*

EXHIBIT 10.1 TRIMAS CORPORATION 2023 EQUITY AND INCENTIVE COMPENSATION PLAN 1.Purpose. The purpose of this Plan is to permit award grants to non-employee Directors, officers and other employees of the Company and its Subsidiaries, and certain consultants to the Company and its Subsidiaries, and to provide to such persons incentives and rewards for service and/or performance. 2.Definitions. As used

FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 9, 2023 TRIMAS CORPORATION (Exact name of registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 9, 2023 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorporat

Form of Performance Stock Units Agreement - 2023 LTI - under the 2017 Equity and Incentive Compensation Plan, incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q filed on April 27, 2023.*

Exhibit 10.1 1/1/23 – 12/31/25 Award Performance Stock Units TRIMAS CORPORATION 2017 EQUITY AND INCENTIVE COMPENSATION PLAN PERFORMANCE STOCK UNITS AGREEMENT TriMas Corporation (the “Company”), as permitted by the TriMas Corporation 2017 Equity and Incentive Compensation Plan (“Plan”), and as approved by the Committee, has granted to the individual listed below (“Grantee”), the opportunity to earn

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) April 27, 2023 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorpo

Form of Restricted Stock Units Agreement (Three-Year Vest) - 2023 LTI - under the 2017 Equity and Incentive Compensation Plan, incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q filed on April 27, 2023.*

Exhibit 10.2 Restricted Stock Units Award Three-Year Vest TRIMAS CORPORATION 2017 EQUITY AND INCENTIVE COMPENSATION PLAN RESTRICTED STOCK UNITS AGREEMENT TriMas Corporation (the “Company”), as permitted by the TriMas Corporation 2017 Equity and Incentive Compensation Plan (“Plan”), and as approved by the Committee, has granted to the individual listed below (“Grantee”), a Restricted Stock Units aw

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended March 31, 2023 Or ☐ Transition Report

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended March 31, 2023 Or ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period from to . Commission file number 0

TRIMAS REPORTS FIRST QUARTER 2023 RESULTS Company Reaffirms 2023 Outlook

TRIMAS REPORTS FIRST QUARTER 2023 RESULTS Company Reaffirms 2023 Outlook BLOOMFIELD HILLS, Michigan, April 27, 2023 - TriMas (NASDAQ: TRS) today announced financial results for the first quarter ended March 31, 2023.

Form of Restricted Stock Units Agreement (Board of Directors) (One-Year Vest) - 2023 LTI - under the 2017 Equity and Incentive Compensation Plan, incorporated by reference to Exhibit 10.3 to the Company’s Quarterly Report on Form 10-Q filed on April 27, 2023.*

Exhibit 10.3 Restricted Stock Units Award To Board of Directors TRIMAS CORPORATION 2017 EQUITY AND INCENTIVE COMPENSATION PLAN RESTRICTED STOCK UNITS AGREEMENT TriMas Corporation (the “Company”), as permitted by the TriMas Corporation 2017 Equity and Incentive Compensation Plan (“Plan”), and as approved by the Committee, has granted to the individual listed below (“Grantee”), a Restricted Stock Un

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

TRS / Trimas Corporation / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 11)* Name of issuer: TriMas Corp. Title of Class of Securities: Common Stock CUSIP Number: 896215209 Date of Event Which Requires Filing of this Statement: February 28, 2023 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Rule

FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) March 8, 2023 TRIMAS CORPORATION (Exact name of registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) March 8, 2023 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorpor

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) March 2, 2023 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorpor

FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 23, 2023 TRIMAS CORPORATION (Exact name of registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 23, 2023 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of inco

TRIMAS REPORTS FOURTH QUARTER AND FULL YEAR 2022 RESULTS Company Provides 2023 Outlook

TRIMAS REPORTS FOURTH QUARTER AND FULL YEAR 2022 RESULTS Company Provides 2023 Outlook BLOOMFIELD HILLS, Michigan, February 23, 2023 - TriMas (NASDAQ: TRS) today announced financial results for the fourth quarter and full year ended December 31, 2022.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K (Mark One) ☒ 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 PUR

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K (Mark One) ☒ 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 THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-10716 TRIMAS CORPORAT

TriMas Corporation Subsidiary List.

Exhibit 21.1 TriMas Corporation Significant(1) Subsidiary List Allfast Fastening Systems, LLC (California limited liability company) Monogram Aerospace Fasteners, Inc. (Delaware corporation) Norris Cylinder Company (Delaware corporation) Rieke Corporation (Indiana corporation) Certain companies may also use trade names or other assumed names in the conduct of their business. (1) As defined in Rule

TRS / TriMas Corp / DIMENSIONAL FUND ADVISORS LP - SEC SCHEDULE 13G Passive Investment

SC 13G/A 1 SEC13GFiling.htm SEC SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 6 )* TriMas Corp (Name of Issuer) Common Stock (Title of Class of Securities) 896215209 (CUSIP Number) December 30, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designa

TRS / TriMas Corp / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv02076-trimascorp.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 10)* Name of issuer: TriMas Corp. Title of Class of Securities: Common Stock CUSIP Number: 896215209 Date of Event Which Requires Filing of this Statement: December 30, 2022 Check the appropriate box to designate the rule

TRS / TriMas Corp / WELLINGTON MANAGEMENT GROUP LLP - SEC SCHEDULE 13G Passive Investment

SC 13G/A 1 SEC13GFiling.htm SEC SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 8 )* TRIMAS CORPORATION (Name of Issuer) Common Stock (Title of Class of Securities) 896215209 (CUSIP Number) December 30, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to

TRS / TriMas Corp / BlackRock Inc. Passive Investment

SC 13G/A 1 us8962152091013123.txt us8962152091013123.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 9) TRIMAS CORP - (Name of Issuer) Common Stock - (Title of Class of Securities) 896215209 - (CUSIP Number) December 31, 2022 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to des

TRS / TriMas Corp / VICTORY CAPITAL MANAGEMENT INC Passive Investment

SC 13G/A 1 trimas13ga1123122.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 ( Amendment No. 1)* Trimas Corp (Name of Issuer) Common Stock (Title of Class of Securities) 896215209 (CUSIP Number) December 31, 2022 (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the rule

TRS / TriMas Corp / Allspring Global Investments Holdings, LLC Passive Investment

SC 13G/A 1 Trimas896215209.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1) TRIMAS CORP (Name of Issuer) COM (Title of Class of Securities) 896215209 (CUSIP Number) December 31, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to w

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended September 30, 2022 Or ☐ Transition Re

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) ? Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended September 30, 2022 Or ? Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period from to . Commission file numb

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 27, 2022 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incor

TRIMAS REPORTS THIRD QUARTER 2022 RESULTS

TRIMAS REPORTS THIRD QUARTER 2022 RESULTS BLOOMFIELD HILLS, Michigan, October 27, 2022 - TriMas (NASDAQ: TRS) today announced financial results for the third quarter ended September 30, 2022.

TRIMAS REPORTS SECOND QUARTER 2022 RESULTS Company Reaffirms Full Year 2022 Outlook

TRIMAS REPORTS SECOND QUARTER 2022 RESULTS Company Reaffirms Full Year 2022 Outlook BLOOMFIELD HILLS, Michigan, July 28, 2022 - TriMas (NASDAQ: TRS) today announced financial results for the second quarter ended June 30, 2022.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended June 30, 2022 Or ☐ Transition Report

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) ? Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended June 30, 2022 Or ? Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period from to . Commission file number 00

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 28, 2022 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorpor

Conflict Minerals Report of TriMas Corporation

Exhibit 1.01 TriMas Corporation Conflict Minerals Report For the Reporting Period January 1, 2021 to December 31, 2021 TriMas Corporation (TriMas or the Company) is filing this Conflict Minerals Report (CMR) for the reporting period January 1, 2021 to December 31, 2021 (the Reporting Period) as an exhibit to its Form SD pursuant to Rule 13p-1 under the Securities Exchange Act of 1934 (the Rule). T

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT TriMas Corporation (Exact name of registrant as specified in its charter)

SD 1 a2022formsd-may2022final.htm SD UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT TriMas Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation) 001-10716 (Commission File Number) 38-2687639 (IRS Employer Identification No.) 38505 Woodward Avenue, Suite 200 Bloomfield

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 10, 2022 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorpora

TRIMAS REPORTS FIRST QUARTER 2022 RESULTS Company Reaffirms Full Year 2022 Outlook

TRIMAS REPORTS FIRST QUARTER 2022 RESULTS Company Reaffirms Full Year 2022 Outlook BLOOMFIELD HILLS, Michigan, April 28, 2022 - TriMas (NASDAQ: TRS) today announced financial results for the first quarter ended March 31, 2022.

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) April 28, 2022 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorpo

Form of Restricted Stock Units Agreement (Three-Year Vest) - 2022 LTI - under the 2017 Equity and Incentive Compensation Plan, incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q filed on April 28, 2022.*

Exhibit 10.2 Restricted Stock Units Award Three-Year Vest TRIMAS CORPORATION 2017 EQUITY AND INCENTIVE COMPENSATION PLAN RESTRICTED STOCK UNITS AGREEMENT TriMas Corporation (the ?Company?), as permitted by the TriMas Corporation 2017 Equity and Incentive Compensation Plan (?Plan?), and as approved by the Committee, has granted to the individual listed below (?Grantee?), a Restricted Stock Units aw

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended March 31, 2022 Or ☐ Transition Report

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) ? Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended March 31, 2022 Or ? Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period from to . Commission file number 0

f Directors) (One-Year Vest) - 2022 LTI - under the 2017 Equity and Incentive Compensation Plan, incorporated by reference to Exhibit 10.3 to the Company’s Quarterly Report on Form 10-Q filed on April 28, 2022.*

Exhibit 10.3 Restricted Stock Units Award To Board of Directors TRIMAS CORPORATION 2017 EQUITY AND INCENTIVE COMPENSATION PLAN RESTRICTED STOCK UNITS AGREEMENT TriMas Corporation (the ?Company?), as permitted by the TriMas Corporation 2017 Equity and Incentive Compensation Plan (?Plan?), and as approved by the Committee, has granted to the individual listed below (?Grantee?), a Restricted Stock Un

Form of Performance Stock Units Agreement - 2022 LTI - under the 2017 Equity and Incentive Compensation Plan, incorporated by reference to Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q filed on April 28, 2022.*

Exhibit 10.1 1/1/22 ? 12/31/24 Award Performance Stock Units TRIMAS CORPORATION 2017 EQUITY AND INCENTIVE COMPENSATION PLAN PERFORMANCE STOCK UNITS AGREEMENT TriMas Corporation (the ?Company?), as permitted by the TriMas Corporation 2017 Equity and Incentive Compensation Plan (?Plan?), and as approved by the Committee, has granted to the individual listed below (?Grantee?), the opportunity to earn

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

DEFA14A 1 ny20001745x2defa14a.htm DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (a

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

TriMas Corporation Subsidiary List.

Exhibit 21.1 TriMas Corporation Significant(1) Subsidiary List Allfast Fastening Systems, LLC (California limited liability company) Monogram Aerospace Fasteners, Inc. (Delaware corporation) Norris Cylinder Company (Delaware corporation) Rieke Corporation (Indiana corporation) Certain companies may also use trade names or other assumed names in the conduct of their business. (1) As defined in Rule

TRIMAS REPORTS FOURTH QUARTER AND FULL YEAR 2021 RESULTS Achieves Strong Sales, Earnings and Cash Flow in 2021 Company Provides 2022 Outlook

TRIMAS REPORTS FOURTH QUARTER AND FULL YEAR 2021 RESULTS Achieves Strong Sales, Earnings and Cash Flow in 2021 Company Provides 2022 Outlook BLOOMFIELD HILLS, Michigan, March 1, 2022 - TriMas (NASDAQ: TRS) today announced financial results for the fourth quarter and full year ended December 31, 2021.

Amendment to Credit Agreement, dated November 19, 2021, by and among TriMas Corporation, TriMas Company LLC and JPMorgan Chase Bank, N.A., as Administrative Agent and Collateral Agent, and the various lenders from time to time thereto, incorporated by reference to Exhibit 10.2 to the Company’s Annual Report on Form 10-K filed on March 1, 2022.

Exhibit 10.2 AMENDMENT AMENDMENT, dated as of November 19, 2021 (this ?Amendment?), to the CREDIT AGREEMENT, dated as of October 16, 2013 (as amended, amended and restated, supplemented or otherwise modified from time to time, including, without limitation, by that certain Replacement Facility Amendment dated as of June 30, 2015, that certain Foreign Subsidiary Borrowing Agreement and Amendment, d

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C. 20549 Form 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR ☐ TRANSITION REPORT PURS

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C. 20549 Form 10-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-10716 TRIMAS CORPORATI

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) March 1, 2022 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorpor

TRS / TriMas Corp / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 9)* Name of issuer: TriMas Corp. Title of Class of Securities: Common Stock CUSIP Number: 896215209 Date of Event Which Requires Filing of this Statement: December 31, 2021 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ??Rule 1

TRS / TriMas Corp / DIMENSIONAL FUND ADVISORS LP - SEC SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 5 )* TriMas Corp (Name of Issuer) Common Stock (Title of Class of Securities) 896215209 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule i

TRS / TriMas Corp / WELLINGTON MANAGEMENT GROUP LLP - SEC SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 7 )* TRIMAS CORPORATION (Name of Issuer) Common Stock (Title of Class of Securities) 896215209 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Sch

TRS / TriMas Corp / VICTORY CAPITAL MANAGEMENT INC Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 ( Amendment No.)* Trimas Corp (Name of Issuer) Common Stock (Title of Class of Securities) 896215209 (CUSIP Number) December 31, 2021 (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is

TRS / TriMas Corp / Allspring Global Investments Holdings, LLC Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. ) TRIMAS CORP (Name of Issuer) COM (Title of Class of Securities) 896215209 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [X]

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 28, 2021 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incor

TRIMAS REPORTS THIRD QUARTER 2021 RESULTS Delivered Solid Sales and Earnings Growth; Recently Initiated Dividend Program

CONTACT: Sherry Lauderback VP, Investor Relations & Communications (248) 631-5506 sherrylauderback@trimascorp.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended September 30, 2021 Or ☐ Transition Re

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) ? Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended September 30, 2021 Or ? Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period from to . Commission file numb

Executive Severance / Change in Control Policy, incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on August 11, 2021.*

Exhibit 10.1 Effective Date: August 11, 2021 Supercedes: 03/04/2019 Approved By: TriMas Compensation Committee Title: EXECUTIVE SEVERANCE/CHANGE IN CONTROL POLICY (this ?Policy?) Scope This Policy applies to (i) the executives of TriMas Corporation (?TriMas? or the ?Company?) set forth on Exhibit A, as such exhibit may be updated by the Compensation Committee (the ?Compensation Committee?) of the

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 11, 2021 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorp

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended June 30, 2021 Or ☐ Transition Report

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) ? Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended June 30, 2021 Or ? Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period from to . Commission file number 00

TRIMAS REPORTS SECOND QUARTER 2021 RESULTS TriMas' Packaging Group Posts Record Quarterly Sales and Operating Profit Provides Full Year 2021 Outlook

CONTACT: Sherry Lauderback VP, Investor Relations & Communications (248) 631-5506 sherrylauderback@trimascorp.

Offer Letter between TriMas Corporation and Scott Mell dated March 15, 2021.*

Exhibit 10.2 March 15, 2021 Mr. Scott Mell Via Email Delivery Dear Scott: As discussed, your meetings with the TriMas Corporation (?TriMas?) Audit Committee representatives of our Board of Directors have left us with a very positive impression of your experience base, knowledge, personal qualities sense of commitment, and opportunity for career growth. Accordingly, we are delighted to extend to yo

Separation Agreement between TriMas Corporation and Robert J. Zalupski dated May 1, 2021.*

Exhibit 10.1 SEPARATION AGREEMENT This Separation Agreement (this ?Separation Agreement?) between TriMas Corporation (the ?Company?) and Robert J. Zalupski (?you? and similar words) sets forth certain terms of your separation from the Company, including certain terms required under the Company?s Executive Severance/Change of Control Policy, effective as of March 4, 2019 (the ?Severance Policy?), i

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 29, 2021 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorpor

Conflict Minerals Report of TriMas Corporation

Exhibit 1.01 TriMas Corporation Conflict Minerals Report For the Reporting Period January 1, 2020 to December 31, 2020 TriMas Corporation (TriMas or the Company) is filing this Conflict Minerals Report (CMR) for the reporting period January 1, 2020 to December 31, 2020 (the Reporting Period) as an exhibit to its Form SD pursuant to Rule 13p-1 under the Securities Exchange Act of 1934 (the Rule). T

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT TriMas Corporation (Exact name of registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT TriMas Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation) 001-10716 (Commission File Number) 38-2687639 (IRS Employer Identification No.) 38505 Woodward Avenue, Suite 200 Bloomfield Hills, Michigan (Address of principa

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 11, 2021 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorpora

TriMas Corporation Additional Information Regarding Special Items Impacting Reported GAAP Financial Measures (Unaudited - dollars per share) 2020 quarterly periods ended Year ended Quarter ended 2021 March 31 June 30 September 30 December 31 December

Exhibit 99.2 TriMas Corporation Additional Information Regarding Special Items Impacting Reported GAAP Financial Measures (Unaudited - dollars per share) 2020 quarterly periods ended Year ended Quarter ended 2021 March 31 June 30 September 30 December 31 December 31, 2020 March 31 Diluted earnings (loss) per share, as reported $ 0.30 $ (0.36) $ (2.32) $ 0.54 $ (1.83) $ 0.30 Dilutive impact (1) ? ?

Form of Restricted Stock Units Agreement (Three-Year Vest) - 2021 LTI - under the 2017 Equity and Incentive Compensation Plan.*

Exhibit 10.2 Restricted Stock Units Award Three-Year Vest TRIMAS CORPORATION 2017 EQUITY AND INCENTIVE COMPENSATION PLAN RESTRICTED STOCK UNITS AGREEMENT TriMas Corporation (the ?Company?), as permitted by the TriMas Corporation 2017 Equity and Incentive Compensation Plan (?Plan?), and as approved by the Committee, has granted to the individual listed below (?Grantee?), a Restricted Stock Units aw

SEPARATION AGREEMENT

Exhibit 10.4 SEPARATION AGREEMENT This Separation Agreement (this ?Separation Agreement?) between TriMas Corporation (the ?Company?) and Joshua A. Sherbin (?you? and similar words) sets forth certain terms of your separation from the Company, including certain terms required under the Company?s Executive Severance/Change of Control Policy, effective as of March 4, 2019 (the ?Severance Policy?), in

TRIMAS REPORTS FIRST QUARTER 2021 RESULTS TriMas' Packaging Group Posts Record First Quarter Sales and Operating Profit

CONTACT: Sherry Lauderback VP, Investor Relations & Communications (248) 631-5506 sherrylauderback@trimascorp.

Form of Restricted Stock Units Agreement (Board Of Directors) (One-Year Vest) - 2021 LTI - under the 2017 Equity and Incentive Compensation Plan.*

Exhibit 10.3 Restricted Stock Units Award To Board of Directors TRIMAS CORPORATION 2017 EQUITY AND INCENTIVE COMPENSATION PLAN RESTRICTED STOCK UNITS AGREEMENT TriMas Corporation (the ?Company?), as permitted by the TriMas Corporation 2017 Equity and Incentive Compensation Plan (?Plan?), and as approved by the Committee, has granted to the individual listed below (?Grantee?), a Restricted Stock Un

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) ? Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended March 31, 2021 Or ? Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period from to . Commission file number 0

Form of Performance Stock Units Agreement - 2021 LTI - under the 2017 Equity and Incentive Compensation Plan.*

Exhibit 10.1 1/1/21 ? 12/31/23 Award Performance Stock Units TRIMAS CORPORATION 2017 EQUITY AND INCENTIVE COMPENSATION PLAN PERFORMANCE STOCK UNITS AGREEMENT TriMas Corporation (the ?Company?), as permitted by the TriMas Corporation 2017 Equity and Incentive Compensation Plan (?Plan?), and as approved by the Committee, has granted to the individual listed below (?Grantee?), the opportunity to earn

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) April 24, 2021 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorpo

- DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

- DEF 14A

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

Indenture, dated as of March 29, 2021, among TriMas Corporation, the Guarantors named therein and Wells Fargo Bank, National Association, as Trustee (including the Form of Note).

Exhibit 4.1 TRIMAS CORPORATION, as Issuer, the Guarantors party hereto from time to time and WELLS FARGO BANK, NATIONAL ASSOCIATION, as Trustee INDENTURE Dated as of March 29, 2021 4.125% Senior Notes due 2029 TABLE OF CONTENTS Page ARTICLE I DEFINITIONS AND INCORPORATION BY REFERENCE SECTION 1.01 Definitions 1 SECTION 1.02 Other Definitions 35 SECTION 1.03 Rules of Construction 36 ARTICLE II THE

Second Replacement Revolving Facility Amendment, dated as of March 29, 2021, among TriMas Corporation, TriMas Company LLC, the subsidiary borrowers party thereto, JPMorgan Chase Bank, N.A., as administrative agent, and the other agents and Lenders party thereto.

Exhibit 10.1 Execution Version SECOND REPLACEMENT REVOLVING FACILITY AMENDMENT SECOND REPLACEMENT REVOLVING FACILITY AMENDMENT, dated as of March 29, 2021 (this ?Amendment?), to the CREDIT AGREEMENT, dated as of October 16, 2013 (as amended, amended and restated, supplemented or otherwise modified from time to time, including, without limitation, by that certain Replacement Facility Amendment date

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): March 29, 2021 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction of incorporation) (Commission File

TRIMAS ANNOUNCES CLOSING OF DEBT REFINANCING

Exhibit 99.1 FOR IMMEDIATE RELEASE CONTACT: Sherry Lauderback VP, Investor Relations & Communications (248) 631-5506 [email protected] TRIMAS ANNOUNCES CLOSING OF DEBT REFINANCING BLOOMFIELD HILLS, Michigan, March 30, 2021 ? TriMas (NASDAQ: TRS) today announced the closing on March 29, 2021 of its offering of $400 million in aggregate principal of senior unsecured notes due 2029 (the

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): March 15, 2021 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or Other Jurisdiction of Incorporation or Organization) (

TRIMAS ANNOUNCES PRICING OF $400 MILLION DEBT OFFERING

EX-99.1 Exhibit 99.1 FOR IMMEDIATE RELEASE CONTACT: Sherry Lauderback VP, Investor Relations & Communications (248) 631-5506 [email protected] TRIMAS ANNOUNCES PRICING OF $400 MILLION DEBT OFFERING BLOOMFIELD HILLS, Michigan, March 15, 2021 – TriMas (NASDAQ: TRS) today announced that it has priced its offering of $400 million in aggregate principal of senior unsecured notes due 2029

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): March 15, 2021 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or Other Jurisdiction of Incorporation or Organization) (

TRIMAS ANNOUNCES LAUNCH OF DEBT OFFERING

EX-99.1 Exhibit 99.1 FOR IMMEDIATE RELEASE CONTACT: Sherry Lauderback VP, Investor Relations & Communications (248) 631-5506 [email protected] TRIMAS ANNOUNCES LAUNCH OF DEBT OFFERING BLOOMFIELD HILLS, Michigan, March 15, 2021 – TriMas Corporation (“TriMas”) (NASDAQ: TRS) today announced that it has initiated an offering, subject to market conditions, of $350 million in aggregate pri

TRIMAS REPORTS FOURTH QUARTER AND FULL YEAR 2020 RESULTS TriMas' Packaging Group Achieves Record Fourth Quarter and Full Year Sales Company Provides First Quarter 2021 Outlook

CONTACT: Sherry Lauderback VP, Investor Relations & Communications (248) 631-5506 sherrylauderback@trimascorp.

Annual Report - 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C. 20549 Form 10-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-10716 TRIMAS CORPORATI

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 25, 2021 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of inco

TriMas Corporation Subsidiary List.

Exhibit 21.1 TriMas Corporation Significant(1) Subsidiary List Allfast Fastening Systems, LLC (California limited liability company) Monogram Aerospace Fasteners, Inc. (Delaware corporation) Norris Cylinder Company (Delaware corporation) Rieke Corporation (Indiana corporation) Certain companies may also use trade names or other assumed names in the conduct of their business. (1) As defined in Rule

SCHEDULE 13G

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 4 )* TriMas Corp (Name of Issuer) Common Stock (Title of Class of Securities) 896215209 (CUSIP Number) December 31, 2020 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule i

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 8)*

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 8)* Name of issuer: TriMas Corp. Title of Class of Securities: Common Stock CUSIP Number: 896215209 Date of Event Which Requires Filing of this Statement: December 31, 2020 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Rule 1

SCHEDULE 13G

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 6 )* TRIMAS CORPORATION (Name of Issuer) Common Stock (Title of Class of Securities) 896215209 (CUSIP Number) December 31, 2020 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Sch

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended September 30, 2020 Or ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period from to . Commission file numb

Financial Statements and Exhibits, Results of Operations and Financial Condition - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 29, 2020 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incor

TRIMAS REPORTS THIRD QUARTER 2020 RESULTS TriMas' Packaging Group Posts Second Consecutive Record Sales and Operating Profit Quarter Announces Packaging Group Acquisition of Affaba & Ferrari

EX-99.1 2 trs09302020exhibit991.htm EX-99.1 CONTACT: Sherry Lauderback VP, Investor Relations & Communications (248) 631-5506 [email protected] TRIMAS REPORTS THIRD QUARTER 2020 RESULTS TriMas' Packaging Group Posts Second Consecutive Record Sales and Operating Profit Quarter Announces Packaging Group Acquisition of Affaba & Ferrari BLOOMFIELD HILLS, Michigan, October 29, 2020 - TriM

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 30, 2020 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorpor

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended June 30, 2020 Or ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period from to . Commission file number 00

TRIMAS REPORTS SECOND QUARTER 2020 RESULTS TriMas' Packaging Group Posts Record Sales Quarter

EX-99.1 2 trs06302020exhibit991.htm EXHIBIT 99.1 CONTACT: Sherry Lauderback VP, Investor Relations & Communications (248) 631-5506 [email protected] TRIMAS REPORTS SECOND QUARTER 2020 RESULTS TriMas' Packaging Group Posts Record Sales Quarter BLOOMFIELD HILLS, Michigan, July 30, 2020 - TriMas (NASDAQ: TRS) today announced financial results for the second quarter ended June 30, 2020.

Conflict Minerals Report of TriMas Corporation

EX-1.01 2 a20200527trscmreport.htm EXHIBIT 1.01 Exhibit 1.01 TriMas Corporation Conflict Minerals Report For the Reporting Period January 1, 2019 to December 31, 2019 TriMas Corporation (TriMas or the Company) is filing this Conflict Minerals Report (CMR) for the reporting period January 1, 2019 to December 31, 2019 (the Reporting Period) as an exhibit to its Form SD pursuant to Rule 13p-1 under t

- SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT TriMas Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation) 001-10716 (Commission File Number) 38-2687639 (IRS Employer Identification No.) 38505 Woodward Avenue, Suite 200 Bloomfield Hills, Michigan (Address of principa

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 12, 2020 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorpora

TRIMAS REPORTS FIRST QUARTER 2020 RESULTS

EX-99.1 2 trs03312020exhibit991.htm EXHIBIT 99.1 CONTACT: Sherry Lauderback VP, Investor Relations & Communications (248) 631-5506 [email protected] TRIMAS REPORTS FIRST QUARTER 2020 RESULTS BLOOMFIELD HILLS, Michigan, April 30, 2020 - TriMas (NASDAQ: TRS) today announced financial results for the first quarter ended March 31, 2020. TriMas Highlights • Increased first quarter net sal

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended March 31, 2020 Or ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period from to . Commission file number 0

Form of Performance Stock Units Agreement - 2020 LTI - under the 2017 Equity and Incentive Compensation Plan.*

EX-10.1 2 trs03312020exh101.htm EXHIBIT 10.1 Exhibit 10.1 1/1/20 - 12/31/22 Award Performance Stock Units TRIMAS CORPORATION 2017 EQUITY AND INCENTIVE COMPENSATION PLAN PERFORMANCE STOCK UNITS AGREEMENT TriMas Corporation (the “Company”), as permitted by the TriMas Corporation 2017 Equity and Incentive Compensation Plan (“Plan”), and as approved by the Committee, has granted to the individual list

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) April 30, 2020 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorpo

Form of Restricted Stock Units Agreement - (Board of Directors) - 2020 LTI - under the 2017 Equity and Incentive Compensation Plan.*

EX-10.3 4 trs03312020exh103.htm EXHIBIT 10.3 Exhibit 10.3 Restricted Stock Units Award To Board of Directors TRIMAS CORPORATION 2017 EQUITY AND INCENTIVE COMPENSATION PLAN RESTRICTED STOCK UNITS AGREEMENT Corporation (the “Company”), as permitted by the TriMas Corporation 2017 Equity and Incentive Compensation Plan (“Plan”), and as approved by the Committee, has granted to the individual listed be

Form of Restricted Stock Units Agreement - (Three Year Vest) - 2020 LTI - under the 2017 Equity and Incentive Compensation Plan.*

EX-10.2 3 trs03312020exh102.htm EXHIBIT 10.2 Exhibit 10.2 Restricted Stock Units Award Three-Year Vest TRIMAS CORPORATION 2017 EQUITY AND INCENTIVE COMPENSATION PLAN RESTRICTED STOCK UNITS AGREEMENT TriMas Corporation (the “Company”), as permitted by the TriMas Corporation 2017 Equity and Incentive Compensation Plan (“Plan”), and as approved by the Committee, has granted to the individual listed b

TRS / TriMas Corp. DEFA14A - - DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

TRS / TriMas Corp. DEF 14A - - DEF 14A

DEF 14A 1 nc10004957x1def14a.htm DEF 14A TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the C

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 27, 2020 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of inco

TriMas Corporation Supplemental Business Segment Financial Information - As Previously Reported (Unaudited, dollars in thousands) 2019 quarterly periods ended March 31 June 30 September 30 December 31 Packaging Net sales $ 88,840 $ 103,990 $ 105,480

Exhibit 99.2 TriMas Corporation Supplemental Business Segment Financial Information - As Previously Reported (Unaudited, dollars in thousands) 2019 quarterly periods ended March 31 June 30 September 30 December 31 Packaging Net sales $ 88,840 $ 103,990 $ 105,480 $ 94,030 Operating profit $ 17,640 $ 22,640 $ 19,740 $ 20,750 Special Items(1) to consider in evaluating operating profit: Reversal of a

Description of Securities of TriMas Corporation.

EX-4.2 2 trs-123119xexh42.htm EXHIBIT 4.2 Exhibit 4.2 DESCRIPTION OF SECURITIES REGISTERED UNDER SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 The following summary description of the common stock, par value $0.01 per share (“common stock”), of TriMas Corporation, a Delaware corporation (the “Company”), is based on the provisions of the General Corporation Law of the State of Delaware (“DGCL”)

Annual Report - 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C. 20549 Form 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-10716 TRIMAS CORPORATI

TriMas Corporation Subsidiary List.

Exhibit 21.1 TriMas Corporation Significant(1) Subsidiary List Allfast Fastening Systems, LLC (California limited liability company) Monogram Aerospace Fasteners, Inc. (Delaware corporation) Norris Cylinder Company (Delaware corporation) Rieke Corporation (Indiana corporation) Certain companies may also use trade names or other assumed names in the conduct of their business. (1) As defined in Rule

Form of Special Performance Stock Units Agreement - 2019 LTI - under the 2017 Equity and Incentive Compensation Plan.*

Exhibit 10.37 1/1/2020 - 12/31/2022 Special Award Performance Stock Units TRIMAS CORPORATION 2017 EQUITY AND INCENTIVE COMPENSATION PLAN SPECIAL PERFORMANCE STOCK UNITS AGREEMENT TriMas Corporation (the “Company”), as permitted by the TriMas Corporation 2017 Equity and Incentive Compensation Plan (“Plan”), and as approved by the Committee, has granted to the individual listed below (“Grantee”), th

TRIMAS REPORTS FOURTH QUARTER AND FULL YEAR 2019 RESULTS Achieves High End of EPS Guidance Range for 2019 Increases Share Repurchase Cadence; Provides 2020 Outlook

EX-99.1 2 trs123119exhibit991.htm EXHIBIT 99.1 CONTACT: Sherry Lauderback VP, Investor Relations & Communications (248) 631-5506 [email protected] TRIMAS REPORTS FOURTH QUARTER AND FULL YEAR 2019 RESULTS Achieves High End of EPS Guidance Range for 2019 Increases Share Repurchase Cadence; Provides 2020 Outlook BLOOMFIELD HILLS, Michigan, February 27, 2020 - TriMas (NASDAQ: TRS) today

TRS / TriMas Corp. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 7)* Name of issuer: TriMas Corp Title of Class of Securities: Common Stock CUSIP Number: 896215209 Date of Event Which Requires Filing of this Statement: December 31, 2019 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Rule 13

TRS / TriMas Corp. / DIMENSIONAL FUND ADVISORS LP - SCHEDULE 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 3)* TRIMAS CORP (Name of Issuer) Common Stock (Title of Class of Securities) 896215209 (CUSIP Number) December 31, 2019 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is

TRS / TriMas Corp. / Wellington Management Group LLP - SEC SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 5 )* TRIMAS CORPORATION (Name of Issuer) Common Stock (Title of Class of Securities) 896215209 (CUSIP Number) December 31, 2019 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Sch

TRIMAS ANNOUNCES APPOINTMENTS OF HOLLY BOEHNE AND TERESA FINLEY TO BOARD OF DIRECTORS

EX-99.1 2 trs2020bodappointmente.htm EXHIBIT 99.1 Exhibit 99.1 CONTACT: Sherry Lauderback VP, IR & Communications (248) 631-5506 [email protected] FOR IMMEDIATE RELEASE TRIMAS ANNOUNCES APPOINTMENTS OF HOLLY BOEHNE AND TERESA FINLEY TO BOARD OF DIRECTORS BLOOMFIELD HILLS, Michigan, January 24, 2020 - TriMas (NASDAQ: TRS) announced today that its Board of Directors, as part of a Board

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) January 24, 2020 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incor

Regulation FD Disclosure, Financial Statements and Exhibits, Completion of Acquisition or Disposition of Assets

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) December 20, 2019 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of inco

TRIMAS COMPLETES THE SALE OF ITS LAMONS DIVISION

EX-99.1 3 trs2019lamonssalepress.htm EXHIBIT 99.1 Exhibit 99.1 CONTACT: Sherry Lauderback VP, IR & Communications (248) 631-5506 [email protected] TRIMAS COMPLETES THE SALE OF ITS LAMONS DIVISION BLOOMFIELD HILLS, Michigan, December 20, 2019 - TriMas (NASDAQ: TRS) today announced that it has successfully completed the sale of its Lamons division, a transaction entered into with an in

Asset and Stock Purchase Agreement, dated as of November 1, 2019, by and between TriMas Company LLC and LGC US Holdings, LLC and LGC US Finco, LLC.**

EX-2.1 2 trs2019assetandstockpu.htm EXHIBIT 2.1 Exhibit 2.1 EXECUTION VERSION ASSET AND STOCK PURCHASE AGREEMENT AMONG TRIMAS COMPANY LLC AND LGC US HOLDINGS, LLC AND LGC US FINCO, LLC DATED NOVEMBER 1, 2019 TABLE OF CONTENTS Page ARTICLE I DEFINITIONS 1.1Certain Defined Terms 2 1.2Other Defined Terms 13 1.3Certain Interpretive Matters 16 ARTICLE II PURCHASE AND SALE 2.1Purchase and Sale of the So

TRIMAS CORPORATION UNAUDITED PRO FORMA CONSOLIDATED FINANCIAL INFORMATION

Exhibit 99.2 TRIMAS CORPORATION UNAUDITED PRO FORMA CONSOLIDATED FINANCIAL INFORMATION Overview On December 20, 2019, TriMas Corporation ("TriMas" or the "Company") completed the previously announced sale of its Lamons division (the “Lamons Division”) to two wholly-owned subsidiaries of an investment fund sponsored by First Reserve, pursuant to an Asset and Stock Purchase Agreement dated as of Nov

TRIMAS ENTERS INTO AGREEMENT TO SELL ITS LAMONS BUSINESS

Exhibit 99.2 CONTACT: Sherry Lauderback VP, Investor Relations & Communications (248) 631-5506 [email protected] TRIMAS ENTERS INTO AGREEMENT TO SELL ITS LAMONS BUSINESS BLOOMFIELD HILLS, Michigan, November 4, 2019 - TriMas (NASDAQ: TRS) today announced that TriMas Company, LLC, a wholly-owned subsidiary of TriMas Corporation, has entered into a definitive agreement to sell its Lamon

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 4, 2019 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incor

TRIMAS REPORTS THIRD QUARTER 2019 RESULTS Company Enters Agreement to Sell Lamons; Increases Share Repurchase Authorization

EX-99.1 2 trs09302019exhibit991.htm EXHIBIT 99.1 Exhibit 99.1 CONTACT: Sherry Lauderback VP, Investor Relations & Communications (248) 631-5506 [email protected] TRIMAS REPORTS THIRD QUARTER 2019 RESULTS Company Enters Agreement to Sell Lamons; Increases Share Repurchase Authorization BLOOMFIELD HILLS, Michigan, November 4, 2019 - TriMas (NASDAQ: TRS) today announced financial result

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended September 30, 2019 Or ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period from to . Commission file numb

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 19, 2019 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation) 001-10716 (Commission File Number) 38-2687639 (IRS Employer Identification No.

TRIMAS REPORTS SECOND QUARTER 2019 RESULTS Delivered Sales and Earnings Growth; Acquired 1% of Shares Outstanding

EX-99.1 2 trs06302019xexhibit991.htm EXHIBIT 99.1 CONTACT: Sherry Lauderback VP, Investor Relations & Communications (248) 631-5506 [email protected] TRIMAS REPORTS SECOND QUARTER 2019 RESULTS Delivered Sales and Earnings Growth; Acquired 1% of Shares Outstanding BLOOMFIELD HILLS, Michigan, July 30, 2019 - TriMas (NASDAQ: TRS) today announced financial results for the quarter ended J

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 30, 2019 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorpor

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended June 30, 2019 Or ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period from to . Commission file number 00

Form of Restricted Stock Units Agreement (Three-Year Vest) - 2019 LTI - under the 2017 Equity and Incentive Compensation Plan.*

Exhibit 10.2 Restricted Stock Units Award Three-Year Vest TRIMAS CORPORATION 2017 EQUITY AND INCENTIVE COMPENSATION PLAN RESTRICTED STOCK UNITS AGREEMENT TriMas Corporation (the “Company”), as permitted by the TriMas Corporation 2017 Equity and Incentive Compensation Plan (“Plan”), and as approved by the Committee, has granted to the individual listed below (“Grantee”), a Restricted Stock Units aw

Form of Restricted Stock Units Agreement (Board of Directors) (One-Year Vest) - 2019 LTI - under the 2017 Equity and Incentive Compensation Plan.*

Exhibit 10.3 Restricted Stock Units Award To Board of Directors TRIMAS CORPORATION 2017 EQUITY AND INCENTIVE COMPENSATION PLAN RESTRICTED STOCK UNITS AGREEMENT TriMas Corporation (the “Company”), as permitted by the TriMas Corporation 2017 Equity and Incentive Compensation Plan (“Plan”), and as approved by the Committee, has granted to the individual listed below (“Grantee”), a Restricted Stock Un

Form of Performance Stock Units Agreement - 2019 LTI - under the 2017 Equity and Incentive Compensation Plan.*

EX-10.1 2 trs06302019exh101.htm EXHIBIT 10.1 Exhibit 10.1 1/1/19 - 12/31/21 Award Performance Stock Units TRIMAS CORPORATION 2017 EQUITY AND INCENTIVE COMPENSATION PLAN PERFORMANCE STOCK UNITS AGREEMENT TriMas Corporation (the “Company”), as permitted by the TriMas Corporation 2017 Equity and Incentive Compensation Plan (“Plan”), and as approved by the Committee, has granted to the individual list

Conflict Minerals Report of TriMas Corporation

Exhibit 1.01 TriMas Corporation Conflict Minerals Report For the Reporting Period January 1, 2018 to December 31, 2018 TriMas Corporation ("TriMas" or the "Company") is filing this Conflict Minerals Report ("CMR") for the reporting period January 1, 2018 to December 31, 2018 (the "Reporting Period") as an exhibit to its Form SD ("Form SD") pursuant to Rule 13p-1 under the Securities Exchange Act o

TRS / TriMas Corp. SD - - SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT TriMas Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation) 001-10716 (Commission File Number) 38-2687639 (IRS Employer Identification No.) 38505 Woodward Avenue, Suite 200 Bloomfield Hills, Michigan (Address of principa

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 14, 2019 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation) 001-10716 (Commission File Number) 38-2687639 (IRS Employer Identification No.

TRIMAS REPORTS FIRST QUARTER 2019 RESULTS Delivers Sales and Earnings Growth; Reaffirms Previously Provided Guidance

EX-99.1 2 trs03312019xexhibit991.htm EXHIBIT 99.1 CONTACT: Sherry Lauderback VP, Investor Relations & Communications (248) 631-5506 [email protected] TRIMAS REPORTS FIRST QUARTER 2019 RESULTS Delivers Sales and Earnings Growth; Reaffirms Previously Provided Guidance BLOOMFIELD HILLS, Michigan, April 30, 2019 - TriMas (NASDAQ: TRS) today announced financial results for the quarter end

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) April 30, 2019 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorpo

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) x Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended March 31, 2019 Or o Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period from to . Commission file number 0

TRS / TriMas Corp. DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

TRS / TriMas Corp. DEF 14A

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) March 4, 2019 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorpor

Executive Severance / Change of Control Policy.*

Exhibit 10.1 Date Issued: 03/04/2019 Supersedes: 08/21/2013 Prepared By: General Counsel Approved By: TriMas Compensation Committee Title: EXECUTIVE SEVERANCE/CHANGE OF CONTROL POLICY (this “Policy”) Scope This Policy applies to (i) the executive officers of TriMas Corporation (“TriMas” or the “Company”) set forth on Exhibit A, as such exhibit may be updated by the Compensation Committee (the “Com

TRIMAS REPORTS FOURTH QUARTER AND FULL YEAR 2018 RESULTS Delivers Strong Sales and Earnings Growth; Provides 2019 Outlook

CONTACT: Sherry Lauderback VP, Investor Relations & Communications (248) 631-5506 sherrylauderback@trimascorp.

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 28, 2019 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of inco

TriMas Corporation Supplemental Business Segment Financial Information - Segment Reclassification (Unaudited, dollars in thousands) 2018 quarterly periods ended March 31 June 30 September 30 December 31 Year ended December 31, 2018 Aerospace Net sale

Exhibit 99.2 TriMas Corporation Supplemental Business Segment Financial Information - Segment Reclassification (Unaudited, dollars in thousands) 2018 quarterly periods ended March 31 June 30 September 30 December 31 Year ended December 31, 2018 Aerospace Net sales $ 45,810 $ 45,620 $ 49,070 $ 45,420 $ 185,920 Operating profit $ 5,080 $ 7,310 $ 8,290 $ 6,610 $ 27,290 Special Items(1) to consider in

TRS / TriMas Corp. 10-K (Annual Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C. 20549 Form 10-K (Mark One) x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2018 OR o TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-10716 TRIMAS CORPORATI

TriMas Corporation Subsidiary List.

Exhibit 21.1 TriMas Corporation Significant(1) Subsidiary List Allfast Fastening Systems, LLC (California limited liability company) Arrow Engine Company (Delaware corporation) Lamons Gasket Company (Delaware corporation) Monogram Aerospace Fasteners, Inc. (Delaware corporation) Norris Cylinder Company (Delaware corporation) Rieke Corporation (Indiana corporation) Certain companies may also use tr

TRS / TriMas Corp. / Wellington Management Group LLP - SEC SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 4 )* TRIMAS CORPORATION (Name of Issuer) Common Stock (Title of Class of Securities) 896215209 (CUSIP Number) December 31, 2018 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Sch

TRS / TriMas Corp. / VANGUARD GROUP INC Passive Investment

trimascorp.htm - Generated by SEC Publisher for SEC Filing SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 6 )* Name of issuer: TriMas Corp Title of Class of Securities: Common Stock CUSIP Number: 896215209 Date of Event Which Requires Filing of this Statement: December 31, 2018 Check the appropriate box to designate

TRS / TriMas Corp. / DIMENSIONAL FUND ADVISORS LP - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 dfs032.htm SCHEDULE 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2)* TRIMAS CORP (Name of Issuer) Common Stock (Title of Class of Securities) 896215209 (CUSIP Number) December 31, 2018 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the ru

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

8-K 1 a8k-greeneappointment1.htm 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) December 12, 2018 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdict

FOR IMMEDIATE RELEASE CONTACT: Sherry Lauderback VP, Investor Relations & Communications (248) 631-5506 [email protected] TRIMAS ANNOUNCES APPOINTMENT OF JEFF GREENE TO BOARD OF DIRECTORS BLOOMFIELD HILLS, Michigan, December 13, 2018 –

final121318trimasappoint FOR IMMEDIATE RELEASE CONTACT: Sherry Lauderback VP, Investor Relations & Communications (248) 631-5506 sherrylauderback@trimascorp.

TRIMAS REPORTS THIRD QUARTER 2018 RESULTS Delivers Solid Sales and Earnings Growth; Raises 2018 Sales and EPS Guidance

CONTACT: Sherry Lauderback VP, Investor Relations & Communications (248) 631-5506 sherrylauderback@trimascorp.

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 30, 2018 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incor

TRS / TriMas Corp. 10-Q (Quarterly Report)

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) x Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended September 30, 2018 Or o Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period from to . Commission file numb

TRIMAS REPORTS SECOND QUARTER 2018 RESULTS Company Delivers Sales and Earnings Growth; Raises 2018 Sales Guidance and EPS Midpoint

EX-99.1 2 trs06302018xexhibit991.htm EXHIBIT 99.1 CONTACT: Sherry Lauderback VP, Investor Relations & Communications (248) 631-5506 [email protected] TRIMAS REPORTS SECOND QUARTER 2018 RESULTS Company Delivers Sales and Earnings Growth; Raises 2018 Sales Guidance and EPS Midpoint BLOOMFIELD HILLS, Michigan, August 7, 2018 - TriMas (NASDAQ: TRS) today announced financial results for t

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) August 7, 2018 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorpo

TRS / TriMas Corp. 10-Q (Quarterly Report)

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) x Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended June 30, 2018 Or o Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period from to . Commission file number 00

Form of Performance Stock Units Agreement (Three-Year-Vest) - 2018 LTI - under the 2017 Equity and Incentive Compensation Plan.*

Exhibit 10.1 1/1/18 - 12/31/20 Award Performance Stock Units TRIMAS CORPORATION 2017 EQUITY AND INCENTIVE COMPENSATION PLAN PERFORMANCE STOCK UNITS AGREEMENT TriMas Corporation (the “Company”), as permitted by the TriMas Corporation 2017 Equity and Incentive Compensation Plan (“Plan”), and as approved by the Committee, has granted to the individual listed below (“Grantee”), the opportunity to earn

Form of Restricted Stock Units Agreement (Three-Year Vest) - 2018 LTI - under the 2017 Equity and Incentive Compensation Plan.*

Exhibit 10.2 Restricted Stock Units Award Three-Year Vest TRIMAS CORPORATION 2017 EQUITY AND INCENTIVE COMPENSATION PLAN RESTRICTED STOCK UNITS AGREEMENT TriMas Corporation (the “Company”), as permitted by the TriMas Corporation 2017 Equity and Incentive Compensation Plan (“Plan”), and as approved by the Committee, has granted to the individual listed below (“Grantee”), a Restricted Stock Units aw

Form of Restricted Stock Units Agreement (Board Of Directors) (One-Year Vest) - 2018 LTI - under the 2017 Equity and Incentive Compensation Plan.*

EX-10.3 4 trs06302018xexh103.htm EXHIBIT 10.3 Exhibit 10.3 Restricted Stock Units Award To Board of Directors TRIMAS CORPORATION 2017 EQUITY AND INCENTIVE COMPENSATION PLAN RESTRICTED STOCK UNITS AGREEMENT TriMas Corporation (the “Company”), as permitted by the TriMas Corporation 2017 Equity and Incentive Compensation Plan (“Plan”), and as approved by the Committee, has granted to the individual l

TRS / TriMas Corp. SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT TriMas Corporation (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation) 001-10716 (Commission File Number) 38-2687639 (IRS Employer Identification No.) 38505 Woodward Avenue, Suite 200 Bloomfield Hills, Michigan (Address of principa

Conflict Minerals Report of TriMas Corporation

Exhibit 1.01 TriMas Corporation Conflict Minerals Report For the Reporting Period January 1, 2017 to December 31, 2017 TriMas Corporation ("TriMas" or the "Company") is filing this Conflict Minerals Report ("CMR") for the reporting period January 1, 2017 to December 31, 2017 (the "Reporting Period") as an exhibit to its Form SD ("Form SD") pursuant to Rule 13p-1 under the Securities Exchange Act o

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 10, 2018 TRIMAS CORPORATION (Exact name of registrant as specified in its charter) Delaware 001-10716 38-2687639 (State or other jurisdiction (Commission (IRS Employer of incorpora

TRS / TriMas Corp. 10-Q (Quarterly Report)

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 10-Q (Mark One) x Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Quarterly Period Ended March 31, 2018 Or o Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period from to . Commission file number 0

TRIMAS REPORTS FIRST QUARTER 2018 RESULTS Company Achieves Sales and Earnings Growth; Reaffirms 2018 Outlook

CONTACT: Sherry Lauderback VP, Investor Relations & Communications (248) 631-5506 sherrylauderback@trimascorp.