[144] Trimas Corporation SEC Filing

Rhea-AI Filing Summary

TriMas Corp. (TRS) – Form 144 filing

Insider Thomas A. Amato has notified intent to sell 65,982 common shares through Fidelity on or about 30-Jul-2025 via NASDAQ. The proposed sale is valued at $2.33 million, based on the stated aggregate market value, and equals roughly 0.16 % of the company’s 40.65 million shares outstanding. The shares stem from restricted-stock vesting events between 2021-2023.

The same insider already sold 63,965 shares for $2.24 million on 29-Jul-2025. Form 144 is only a notice of possible sales; transactions may not occur as stated and do not, by themselves, indicate operational issues. No earnings, guidance, or other financial metrics are included in this filing.

Positive

• None.

Negative

• CEO-linked insider intends to sell 65,982 shares (~$2.33 M) one day after liquidating 63,965 shares, potentially signaling reduced insider confidence.

Insights

Corporate Governance Analyst

TL;DR: Insider plans ~$2.3 M sale after prior $2.2 M sale; mildly negative signal, but size is immaterial to float.

The filing shows CEO-level selling totaling ~130 k shares within two days, a pattern that can suggest profit-taking or portfolio diversification. While the absolute dollar amount is meaningful, the combined sales represent <0.4 % of outstanding shares, limiting structural impact. No adverse information is disclosed, so market reaction will hinge on investor sentiment toward insider activity rather than fundamentals.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	65982	2332930.37	40651688	07/30/2025	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	05/01/2021	Restricted Stock Vesting	Issuer			7295	05/01/2021	Compensation
Common	03/11/2022	Restricted Stock Vesting	Issuer			16947	03/11/2022	Compensation
Common	05/01/2022	Restricted Stock Vesting	Issuer			27247	05/01/2022	Compensation
Common	03/11/2023	Restricted Stock Vesting	Issuer			14493	03/11/2023	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Thomas A. Amato 38505 Woodward Avenue Suite 200 Bloomfield Hills MI 48304	Common	07/29/2025	63965	2241703.40

144: Remarks and Signature

Remarks

Date of Notice

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

How many TriMas (TRS) shares are being registered for sale?

The Form 144 covers 65,982 common shares.

What is the estimated value of the proposed TRS share sale?

The filing lists an aggregate market value of $2,332,930.37.

Who is selling the shares according to the Form 144?

Thomas A. Amato, an insider, is the selling shareholder.

When might the TRS shares be sold?

The approximate sale date disclosed is 30-Jul-2025.

How many shares has the insider sold recently?

The same insider sold 63,965 shares on 29-Jul-2025 for $2.24 M.