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TRIMAS CORP

For the period ended Dec 31, 2025. Filed Mar 2, 2026.

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About this filing

A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2025 · Filed Mar 2, 2026

TRS$38.32-0.8%Stored close · as of Nov 9, 2026

Extracted filing text, with the paragraph anchors used by the comparison.

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Contents

Signatures

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

TRIMAS CORPORATION(Registrant)
BY:/s/ THOMAS J. SNYDER
DATE:March 2, 2026Name: Thomas J. SnyderTitle: President and Chief Executive Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this Report has been signed below by the following persons on behalf of the Registrant and in the capacities and on the dates indicated.

NameTitleDate
/s/ THOMAS J. SNYDERPresident and Chief Executive OfficerMarch 2, 2026
Thomas J. Snyder(Principal Executive Officer) and Director
/s/ PAUL A. SWARTChief Financial OfficerMarch 2, 2026
Paul A. Swart(Principal Financial Officer and Principal Accounting Officer)
/s/ HERBERT K. PARKERChairman of the Board of DirectorsMarch 2, 2026
Herbert K. Parker
/s/ HOLLY M. BOEHNEDirectorMarch 2, 2026
Holly M. Boehne
/s/ JEFFREY A. FIELKOWDirectorMarch 2, 2026
Jeffrey A. Fielkow
/s/ TERESA M. FINLEYDirectorMarch 2, 2026
Teresa M. Finley
/s/ SHAWN S. SEDAGHATDirectorMarch 2, 2026
Shawn S. Sedaghat
/s/ ADRIANNE W. SHAPIRADirectorMarch 2, 2026
Adrianne W. Shapira
/s/ NICK L. STANAGEDirectorMarch 2, 2026
Nick L. Stanage
/s/ DANIEL P. TREDWELLDirectorMarch 2, 2026
Daniel P. Tredwell

SCHEDULE II

PURSUANT TO ITEM 15(a)(2)

OF FORM 10-K VALUATION AND QUALIFYING ACCOUNTS FOR THE YEARS ENDED

December 31, 2025, 2024 AND 2023

ADDITIONS
DESCRIPTIONBALANCEATBEGINNINGOF PERIODCHARGEDTOCOSTS ANDEXPENSESCHARGED(CREDITED)TO OTHERACCOUNTSDEDUCTIONS(A)BALANCEAT ENDOF PERIOD
Allowance for doubtful accounts deducted from accounts receivable in the balance sheet
Year ended December 31, 2025$2,370,000$350,000$(660,000)$720,000$1,340,000
Year ended December 31, 2024$3,070,000$1,480,000$160,000$2,340,000$2,370,000
Year ended December 31, 2023$1,430,000$1,950,000$210,000$520,000$3,070,000

(A)Deductions, representing uncollectible accounts written-off, less recoveries of amounts reserved in prior years.

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.