TRIMAS CORP — Director's Dealing 2013

Nov 1, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TRIMAS CORP (TRS)
CIK: 0000842633
Period of Report: 2013-10-29

Reporting Person: Zeffiro A Mark (Executive Vice President & CFO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-10-29	Common Stock	M	5250	—	Acquired	82438	Indirect
2013-10-29	Common Stock	F	2426	$38.46	Disposed	80012	Indirect
2013-10-29	Common Stock	S	14500	$40.53	Disposed	65512	Indirect
2013-10-29	Common Stock	S	3100	$39.03	Disposed	62412	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-10-29	Restricted Stock Units	$0.0	M	5250	Disposed	2013-09-30	Common Stock (5250.0)	Direct

Footnotes

F1: Each restricted stock unit represents a contingent right to receive the Fair Market Value of one share of common stock, payable only in shares of common stock.

F2: Through the Aldo Mark Zeffiro Trust under agreement dated October 8, 2010, as Trustee.

F3: The first of three installments for restricted stock units granted pursuant to the Restricted Stock Unit Agreement dated February 24, 2011 ("Agreement") and the 2006 Long Term Equity Incentive Plan, vested on October 29, 2013 in satisfaction of the trading threshold as outlined in Section II.A.1(a) of the Agreement.

F4: Subject to graduated vesting as described in footnote (3) above and Section II.A.1 of the Agreement