Director Daniel Tredwell adds TriMas (TRS) shares in open-market buy

Rhea-AI Filing Summary

TriMas Corp director Daniel P. Tredwell reported a small open-market purchase of the company’s common stock. On May 13, 2026, he bought 62.142 shares at $40.58 per share, a total outlay of roughly $2,500.

Following this transaction, Tredwell directly owns 63,457.933 shares of TriMas common stock. In addition, the filing shows 7,500 shares held indirectly by his spouse, reported as indirect ownership. The filing does not show any derivative securities, so this update focuses solely on common stock holdings.

Insider Trade Summary

Net Buyer: 62.142 shares ($2,522)

Net Buy 2 txns

Insider Tredwell Daniel P

Role null

Bought 62.142 shs ($3K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	62.142	$40.58	$3K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 63,457.933 shares (Direct, null); Common Stock — 7,500 shares (Indirect, By spouse)

Footnotes (1)

Key Figures

Shares purchased: 62.142 shares Purchase price: $40.58 per share Direct holdings after transaction: 63,457.933 shares +2 more

5 metrics

Shares purchased 62.142 shares Open-market purchase on May 13, 2026

Purchase price $40.58 per share Open-market purchase of common stock

Direct holdings after transaction 63,457.933 shares Common stock directly owned after May 13, 2026 trade

Indirect holdings by spouse 7,500 shares Common stock reported as held by spouse

Net buy shares 62.142 shares Net buy direction in transaction summary

Key Terms

open-market purchase, Common Stock, indirect ownership, Form 4

4 terms

open-market purchase financial

"describes it as a purchase in an open market or private transaction"

An open-market purchase is when an investor or a company buys shares on a public stock exchange at the going market price, rather than through a private deal. It matters to investors because these purchases change how many shares are available, can push the stock price up or signal confidence from large buyers, and often affect per-share metrics like earnings—think of it like someone buying lots of apples off a grocery shelf, reducing supply and potentially raising the price.

Common Stock financial

"He bought 62.142 shares of TriMas common stock at $40.58 per share"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

indirect ownership financial

"the filing shows 7,500 shares held indirectly by his spouse, reported as indirect ownership"

Form 4 regulatory

"The filing also reports 7,500 shares held indirectly by his spouse"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Tredwell Daniel P

(Last) (First) (Middle)

300 ATLANTIC

7TH FLOOR

(Street)

STAMFORD CONNECTICUT 06901

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
TRIMAS CORP [ TRS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/13/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	05/13/2026	05/14/2026	P		62.142	A	$40.58	63,457.933	D
Common Stock								7,500	I	By spouse

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

	/s/ Jodi F. Robin, as attorney-in-fact	05/15/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did TriMas (TRS) director Daniel P. Tredwell report?

Daniel P. Tredwell reported a small open-market purchase of TriMas common stock. He bought 62.142 shares on May 13, 2026 at $40.58 per share, updating his reported ownership in the company’s common stock.

How many TriMas (TRS) shares did Daniel P. Tredwell buy and at what price?

He bought 62.142 shares of TriMas common stock at $40.58 per share. This was an open-market purchase, representing a modest increase in his direct holdings based on the reported Form 4 data.

What are Daniel P. Tredwell’s TriMas (TRS) holdings after this Form 4 transaction?

After the transaction, he directly holds 63,457.933 shares of TriMas common stock. The filing also reports 7,500 shares held indirectly by his spouse, which are listed separately as indirect ownership.

Was the TriMas (TRS) insider transaction an open-market purchase or another type?

The transaction was an open-market purchase of common stock. The Form 4 lists transaction code P and describes it as a purchase in an open market or private transaction, reflecting a straightforward buy of 62.142 shares.

Does the Form 4 for TriMas (TRS) show any derivative securities for Daniel P. Tredwell?

The Form 4 does not list any derivative securities positions for Daniel P. Tredwell. The derivative summary is empty, so the filing focuses only on his common stock transactions and resulting share ownership.