TRIMAS CORP — Director's Dealing 2013

Aug 16, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TRIMAS CORP (TRS)
CIK: 0000842633
Period of Report: 2013-08-14

Reporting Person: Valenti Samuel III (Director, Chairman)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-08-14	Common Stock	M	50000	$23	Acquired	60406	Direct
2013-08-14	Common Stock	F	29755	$38.65	Disposed	30651	Direct
2013-08-15	Common Stock	S	3000	$37.60	Disposed	27651	Direct
2013-08-15	Common Stock	S	2000	$37.65	Disposed	25651	Direct
2013-08-15	Common Stock	S	2000	$37.58	Disposed	23651	Direct
2013-08-15	Common Stock	S	2000	$37.67	Disposed	21651	Direct
2013-08-15	Common Stock	S	245	$37.40	Disposed	21406	Direct
2013-08-15	Common Stock	S	5000	$37.50	Disposed	16406	Direct
2013-08-15	Common Stock	S	5000	$37.45	Disposed	11406	Direct
2013-08-15	Common Stock	S	1000	$37.47	Disposed	10406	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-08-14	Employee Stock Option (Right to buy)	$23.0	M	50000	Disposed	2015-11-01	Common Stock (50000.0)	Direct

Footnotes

F1: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $37.65 to $37.66 inclusive. The reporting person undertakes to provide to TriMas Corporation, any security holder of TriMas Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (1) to this Form 4.

F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $37.50 to $37.61 inclusive. The reporting person undertakes to provide to TriMas Corporation, any security holder of TriMas Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4.

F3: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $37.67 to $37.70 inclusive. The reporting person undertakes to provide to TriMas Corporation, any security holder of TriMas Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (3) to this Form 4.

F4: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $37.47 to $37.50 inclusive. The reporting person undertakes to provide to TriMas Corporation, any security holder of TriMas Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (4) to this Form 4.

F5: Option to purchase shares of common stock of the Company granted November 1, 2005 under the TriMas Corporation 2002 Long Term Equity Incentive Plan, the shares subject to this Option vested in three equal annual installments on each of anniversary of the date of the grant.