TriMas Hosting Analyst Day Today at Packaging Business

BLOOMFIELD HILLS, Mich., Sept. 14, 2011 /PRNewswire/ — TriMas Corporation
(NASDAQ: TRS) – a diversified manufacturer of engineered and applied products -
announced today that it is hosting an analyst day at its Rieke Packaging Systems
business in Auburn, Indiana.

The presentation will be posted on TriMas’ website at www.trimascorp.com, under
the “Investors” section, and under “Events & Presentations.”

Cautionary Notice Regarding Forward-looking Statements

Any “forward-looking” statements contained herein, including those relating to
market conditions or the Company’s financial condition and results, expense
reductions, liquidity expectations, business goals and sales growth, involve
risks and uncertainties, including, but not limited to, risks and uncertainties
with respect to general economic and currency conditions, various conditions
specific to the Company’s business and industry, the Company’s substantial
leverage, liabilities imposed by the Company’s debt instruments, market demand,
competitive factors, the Company’s ability to maintain compliance with the
listing requirements of NASDAQ, supply constraints, material and energy costs,
technology factors, litigation, government and regulatory actions, the Company’s
accounting policies, future trends, and other risks which are detailed in the
Company’s Annual Report on Form 10-K for the fiscal year ended December 31,
2010, and in the Company’s Quarterly Reports on Form 10-Q. These risks and
uncertainties may cause actual results to differ materially from those indicated
by the forward-looking statements. All forward-looking statements made herein
are based on information currently available, and the Company assumes no
obligation to update any forward-looking statements.

About TriMas

Headquartered in Bloomfield Hills, Michigan, TriMas Corporation (NASDAQ: TRS)
provides engineered and applied products for growing markets worldwide. TriMas
is organized into six reportable segments: Packaging, Energy, Aerospace &
Defense, Engineered Components, Cequent Asia Pacific and Cequent North America.
TriMas has approximately 4,000 employees at more than 60 different facilities in
11 countries. For more information, visit www.trimascorp.com.

About Rieke Packaging Systems

Headquartered in Auburn, Indiana, Rieke Packaging Systems has built its
worldwide reputation on setting the standards in the packaging industry since
1921. The company is a leading manufacturer and distributor of premium-quality
packaging products for the global commercial, industrial and consumer sectors.
Rieke has market leadership in steel and plastic closure caps, drum enclosures,
ring and levers, and specialty dispensing systems.

CONTACT:
Sherry Lauderback
VP, Investor Relations & Communications
(248) 631-5506
sherrylauderback@trimascorp.com

SOURCE TriMas Corporation