[144/A] Trimas Corporation SEC Filing

Rhea-AI Filing Summary

TriMas Corp. (TRS) – Form 144/A notice

Insider Thomas A. Amato intends to sell 65,982 common shares, about 0.16 % of the 40.64 M shares outstanding. The proposed sale, valued at $2.33 million, is scheduled for on- or after 30 Jul 2025 via Fidelity Brokerage Services on NASDAQ.

The stock was received through restricted-stock vesting on four dates between May 2021 and Mar 2023 (total 65,982 shares). In the past three months Amato has already sold 63,965 shares for $2.24 million, indicating an ongoing disposal of equity-compensation awards.

• No earnings, guidance or operational updates are included in this filing.
• The filer certifies awareness of no undisclosed adverse information.

Positive

• Sale volume is only 0.16 % of outstanding shares, implying negligible dilution or market-liquidity impact.
• Shares were earned through restricted-stock vesting, not open-market purchases, signaling compensation-related diversification rather than potential insider pessimism.

Negative

• Second large insider sale within three months (and on consecutive days) may raise perception of negative insider sentiment.
• Aggregate proceeds of ≈$4.6 M from recent sales could pressure near-term stock sentiment despite small percentage of float.

Insights

Securities Analyst

TL;DR – Consecutive insider sales worth ≈$4.6 M may pressure sentiment but represent only 0.3 % of float.

The filing signals another sizeable disposition by Thomas A. Amato following a similar trade one day earlier. Though the absolute dollar amount is meaningful, the combined 129,947 shares equal roughly 0.32 % of TriMas’ outstanding stock and should have limited liquidity impact. Because the shares stem from vested compensation, the transactions appear strategic for diversification rather than indicative of operational concerns. Still, clustered insider selling can be interpreted negatively by momentum-driven investors.

Corporate Governance Expert

TL;DR – Filing is routine; no red flags beyond optics of back-to-back insider disposals.

Form 144 compliance looks standard: disclosure of acquisition history, share counts, broker, and certification that no non-public adverse information exists. The modest percentage of shares sold suggests minimal governance risk. However, repeated sales close in time could draw shareholder scrutiny over executive alignment, particularly if no buy-backs offset dilution from compensation programs.

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/A

144/A: Filer Information

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

144/A: 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/A: 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	40641562	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/A: 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/A: 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/A: 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 in this Form 144/A?

The notice covers 65,982 common shares.

What is the estimated market value of the shares to be sold?

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

When is the proposed sale date for the TRS shares?

The filer intends to begin selling on or about July 30, 2025.

What percentage of TriMas’ outstanding shares does the sale represent?

Approximately 0.16 % of the 40,641,562 shares outstanding.

Who is the insider involved and what were prior sales?

Thomas A. Amato is the seller; he sold 63,965 shares for $2.24 M on July 29, 2025.

How were the shares acquired?

All shares were granted via restricted-stock vesting between May 2021 and March 2023.