SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person* Benson Thomas M (Last) (First) (Middle) 39400 WOODWARD AVENUE SUITE 130 (Street) BLOOMFIELD HILLS MI 48304 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 02/23/2011	3. Issuer Name and Ticker or Trading Symbol TRIMAS CORP [ TRS ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) President Cequent Performance	5. If Amendment, Date of Original Filed (Month/Day/Year)
			6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	6,110(1)	D
Common Stock	1,067(2)	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Employee Stock Option (Right to buy)	10/01/2012	10/01/2015	Common Stock	33,330(3)	$23	D
Non-Qualified Stock Option (Right to buy)	(4)	03/09/2019	Common Stock	30,000(4)	$1.01	D

Explanation of Responses:

1. Restricted shares of common stock of the Company granted December 4, 2009 under the TriMas Corporation 2006 Long Term Equity Incentive Plan, restrictions lapse on March 15, 2011.

2. Balance of restricted shares of common stock of the Company granted April 2, 2008 under the TriMas Corporation 2006 Long Term Equity Incentive Plan, restrictions lapse on April 2, 2011.

3. Option to purchase shares of common stock of the Company granted October 1, 2005 under the TriMas Corporation 2002 Long Term Equity Incentive Plan, 80% of the shares subject to this Option vested in three equal annual installments on each of October 1, 2006, October 1, 2007 and October 1, 2008; the remaining 20% of the shares subject to this Option will vest October 1, 2012.

4. Balance of Non-Qualified Stock Option to purchase shares of common stock of the Company granted March 9, 2009 under the TriMas Corporation 2002 Long Term Equity Incentive Plan, remaining shares subject to this Option shall vest and become exercisable with respect to 12,500 shares on March 9, 2011 and 12,500 shares on March 9, 2012.

Remarks:

Exhibit List: Exhibit 24.1 - Power of Attorney

	/s/ Paula Reno attorney-in-fact	03/02/2011
	** 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 5 (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).
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