[144] Trimas Corporation SEC Filing

Rhea-AI Filing Summary

Form 144 filed for TriMas Corporation (TRS) discloses that insider Thomas A. Amato plans to sell 36,705 common shares through Fidelity Brokerage on or about 31 Jul 2025 on Nasdaq. Based on the filing’s stated 40,641,562 shares outstanding, the proposed sale represents roughly 0.09 % of shares outstanding and carries an aggregate market value of ≈ $1.30 million.

The notice also lists recent insider activity: Amato sold 63,965 shares on 29 Jul 2025 for $2.24 million and 95,469 shares on 30 Jul 2025 for $3.39 million, totaling 159,434 shares (≈ 0.39 % of O/S) and ≈ $5.63 million in gross proceeds over the prior three months. All shares being sold were acquired via restricted-stock vesting between 2020-2024 and are treated as compensation, implying no cash outlay by the filer.

No adverse information about the issuer is asserted, and the filer affirms compliance with Rule 10b5-1/Rule 144 representations. While the volume is modest versus the float, consecutive sizeable sales within days could be viewed by investors as a potential negative sentiment signal from senior leadership.

Positive

• Full Rule 144 compliance demonstrates transparent insider-trading practices.
• Small fraction (0.09 %) of outstanding shares limits direct market impact.

Negative

• Consecutive insider sales totaling 159,434 shares in three months could signal reduced management confidence.
• $5.63 million already liquidated this week adds to supply and may dampen near-term sentiment.

Insights

Securities Analyst

TL;DR – Modest 0.09 % insider sale; consecutive sales raise eyebrows but unlikely to be financially material.

The planned 36.7 k-share disposal is immaterial to TRS’s float and follows larger sales earlier this week. Total three-month insider selling equals 0.39 % of outstanding shares, not enough to affect liquidity or control. Because shares originate from vested RSUs, the transaction likely serves diversification or tax purposes rather than signalling operational weakness. However, back-to-back multi-million-dollar sales by the CEO can feed negative sentiment in the near term. Overall impact is neutral given scale versus float.

Corporate Governance Specialist

TL;DR – Repeated insider selling may pressure governance optics; compliance fully observed.

Rule 144 filing shows proper disclosure and suggests adherence to a trading plan, mitigating legal risk. Yet optics matter: three sales in as many days totaling >$6.9 million (planned plus executed) may concern shareholders about alignment between management and long-term value creation. While not a control-threatening amount, boards often monitor clustered sales for perception risk. Investors may expect explanations in future communications.

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	36705	1298130.71	40641562	07/31/2025	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	03/01/2020	Restricted Stock Vesting	Issuer			4134	03/01/2020	Compensation
Common	05/01/2020	Restricted Stock Vesting	Issuer			8324	05/01/2020	Compensation
Common	03/11/2024	Restricted Stock Vesting	Issuer			24247	03/11/2024	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
Thomas A. Amato 38505 Woodward Avenue, Suite 200 Bloomfield Hills MI 48304	Common	07/30/2025	95469	3393881.19

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 does the insider plan to sell?

The Form 144 covers a proposed sale of 36,705 common shares.

What is the market value of the planned TRS share sale?

At the filing date, the sale is valued at approximately $1.30 million.

How significant is the sale relative to TriMas’ share count?

The 36,705 shares equal about 0.09 % of the 40.64 million shares outstanding.

Has the insider sold other TRS shares recently?

Yes. He sold 63,965 shares on 29 Jul 2025 and 95,469 shares on 30 Jul 2025, totaling 159,434 shares.

How were the shares originally acquired?

All shares were obtained via restricted-stock vesting between 2020 and 2024 as compensation.

On which exchange will the shares be sold?

The planned transaction lists NASDAQ as the exchange.