Second Quarter 2016 Earnings Presentation July 28, 2016

Forward-Looking Statement Forward-Looking Statement Any “forward-looking” statements, within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, contained herein, including, but not limited to, those relating to the Company’s business, financial condition or future results, involve risks and uncertainties, including, but not limited to, risks and uncertainties with respect to: the Company's leverage; liabilities imposed by the Company's debt instruments; market demand; competitive factors; supply constraints; material and energy costs; risks and uncertainties associated with intangible assets, including goodwill or other intangible asset impairment charges; technology factors; litigation; government and regulatory actions; the Company's accounting policies; future trends; general economic and currency conditions; the potential impact of Brexit; various conditions specific to the Company's business and industry; the Company’s ability to identify attractive acquisition candidates, successfully integrate acquired operations or realize the intended benefits of such acquisitions; the Company’s ability to attain the Financial Improvement Plan targeted savings and free cash flow amounts; future prospects of the Company; and other risks that are detailed in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2015. 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. Non-GAAP Financial Measures In this presentation, certain non-GAAP financial measures may be used. Reconciliations of these non-GAAP financial measures to the most directly comparable GAAP financial measure may be found in the Appendix at the end of this presentation or in the earnings releases available on the Company’s website. Additional information is available at www.trimascorp.com under the “Investors” section. Please see the Appendix for details regarding certain costs, expenses and other amounts or charges, collectively described as “Special Items,” that are included in the determination of net income, earnings per share and/or cash flows from operating activities under GAAP, but that management believes should be separately considered when evaluating the quality of the Company’s core operating results, given they may not reflect the ongoing activities of the business. Management believes that presenting these non-GAAP financial measures, on an after Special Items basis, provides useful information to investors by helping them identify underlying trends in the Company’s businesses and facilitating comparisons of performance with prior and future periods. These non-GAAP financial measures should be considered in addition to, and not as a replacement for or superior to, the comparable GAAP financial measures. 2

Agenda • Introductions and Opening Remarks • Financial Highlights • Segment Highlights • Outlook and Summary • Questions and Answers • Appendix 3

Introductions and Opening Remarks

New CEO – Thomas Amato • Comprehensive search conducted using external firm • Experienced leader of global, multi-billion dollar, diversified businesses • Understanding of TriMas businesses as a result of prior roles • Proven track record in: – Driving operational improvements through a relentless focus on performance and continuous improvement – Developing sound strategies to adapt to dynamic markets and customer needs globally – Enhancing growth both organically and through strategic acquisitions – Creating and operating in a fact-based culture with mutual respect for enterprise-wide employees 5 Ability to leverage past experiences to drive future shareholder value.

Initial Observations of TriMas • Great portfolio of diversified businesses • Market-leading brands and positions • Valued “blue-chip” customers with critical supply positions and solid relationships • Highly-engineered, proprietary products • Significant opportunities for organic growth and bolt-on acquisitions • Strong cash flow with opportunities for margin enhancement 6 Key Focus Areas During “First 100 Days” • Visit high-impact manufacturing operations • Engage with the business leadership teams and review strategic plans • Meet with key customers to ensure a smooth transition • Identify and assess near and longer term opportunities to enhance performance and growth All in the spirit of developing and sharing with stakeholders a solid game plan to drive improved results Engage with the TriMas team to identify opportunities and implement actions to drive improved performance. New CEO – Thomas Amato

Opening Remarks – Second Quarter • Second quarter sales of approximately $203 million – external top-line pressures continued – Organic initiatives and acquisition growth were more than offset by the impact of lower oil prices, lower aerospace distributor sales and unfavorable currency exchange – Sequential sales improvement in Packaging and Aerospace • Achieved Q2 EPS, excluding Special Items(1), of $0.34 – solid performance in spite of nearly 10% sales decline • Aerospace recovery actions resulted in sequential improvement – more work to do • Improved operating profit margin, excluding Special Items, by 180 basis points as compared to Q2 2015 • Completed the cost actions related to the $22 million Financial Improvement Plan 7 Cost savings actions mitigating impact of lower sales levels and Aerospace challenges. (1) Please see the Appendix for a detailed reconciliation to GAAP results.

External Headwinds and Tailwinds Headwinds • Macroeconomic conditions ‒ Low industrial activity levels ‒ Interest rate environment • Low oil and commodity prices ‒ Drilling and well completion activity ‒ Capex deferrals and reductions ‒ Resin and specialty steel prices • Inventory reductions in channel ‒ Overall supply chain reductions ‒ Large aerospace distributors • Strength of U.S. dollar – Translation and transaction impacts – Exports in Engineered Components – Imports more competitive • Brexit – Uncertainty in Europe – Consumer confidence in the United Kingdom 8 Tailwinds • Commercial aircraft build rates and backlog – expect slight increase in 2016, with greater growth in 2017 • Asia still growing, albeit at lower rates – Uncertainty around China • Consumer spend remains solid in the U.S. – outpacing economic conditions Headwinds continue – focused on execution to mitigate external challenges.

Business Update 9 Initiatives to drive profitable growth and increased margins – balancing short and long-term objectives. Packaging • Completed staffing of sales team – added leaders with end market expertise • Selected site in Mexico to add manufacturing capacity in support of growth in the Americas • Accelerating new product development and applications with technology center in Asia Aerospace • Executing comprehensive recovery plan to improve manufacturing throughput and cost efficiencies to increase sales and margins • Leveraging recent acquisitions to add product qualifications for new and existing customers Energy • Reconfiguring Houston facility for dedicated manufacture of quick-turn customer orders • Accelerating and broadening move of standard products from Houston to Reynosa Engineered Components • Expanding cylinder capacity to capitalize on North American market position • Maintaining oil field engine/compressor business cost structure to reflect current market demand

Financial Highlights

( fro m co ntinuing o perat io ns) Q2 2016 Q2 2015 Variance Revenue $203.3 $224.9 -9.6% Operating profit $18.7 $19.2 -2.9% Excl. Total Special Items, Operating profit would have been: $25.7 $24.3 5.6% Excl. Total Special Items, Operating profit margin would have been: 12.6% 10.8% 180 bps Income $10.5 $8.5 23.4% Excl. Total Special Items, Income would have been: $15.6 $13.8 13.4% Diluted earnings per share $0.23 $0.19 21.1% Excl. Total Special Items, Diluted earnings per share would have been: $0.34 $0.30 13.3% Free Cash Flow (1) $34.2 $9.4 263.3% Total debt $406.3 $457.3 -11.2% Second Quarter Summary • Q2 sales declined nearly 10% as compared to Q2 2015 – weakness in the oil-related and industrial end markets, lower aerospace distributor volumes and unfavorable currency exchange more than offset organic initiatives and the results of a recent acquisition • Q2 operating profit dollars and margin percentage, excluding Special Items, increased as the positive impact of the Financial Improvement Plan and productivity initiatives more than offset the impact of reduced sales and related lower fixed cost absorption • Income and diluted EPS, excluding Special Items, both increased due to higher operating profit and currency gains • Solid Free Cash Flow generation in Q2 2016; total debt decreased as compared to Q2 2015 11 Note: Please see the Appendix for a detailed reconciliation to GAAP results. (1) Free Cash Flow is defined as Net Cash Provided by Operating Activities of Continuing Operations, excluding the cash impact of Special Items, less Capital Expenditures. (Unaudited, dollars in millions, except per share amounts) Grew EPS year-over-year, despite external top-line pressures and the impact of challenges in Aerospace.

$0.30 $0.34 2015 Q2 EPS, excluding Special Items 2015 Energy legal claim Energy-facing business volume Aerospace operating profit FIP savings / operating improvements Corporate costs and non- cash stock compensation Interest / taxes / other 2016 Q2 EPS, excluding Special Items EPS Bridge from Q2 2015 to Q2 2016 12 • Significant year-over-year impact related to lower energy-facing business volume and reduced Aerospace profitability • Executing plan to remedy short-term production and integration inefficiencies in Aerospace • Cost savings actions (including the Financial Improvement Plan) helping offset external headwinds • Corporate spend reduced following the Cequent spin-off and in response to macroeconomic challenges Offsetting the majority of the external headwinds; continue to execute on margin enhancement plans. (For illustrative purposes) Note: Please see the Appendix for a detailed reconciliation to GAAP results.

Segment Highlights

Packaging 14 • Sales were relatively flat, excluding the impact of unfavorable currency exchange • Profit and the related margin, excluding Special Items, increased due to a more favorable product mix and ongoing productivity initiatives, offsetting the continued investment in global capabilities Initiatives • Aligned global marketing and sales force with end markets and customers • Selected new site in Mexico to expand manufacturing capacity serving the Americas • Developing world-class product development team and customer innovation centers in locations close to customers • Executing on productivity initiatives to fund global growth while maintaining margins Quarterly Commentary (Unaudited, dollars in millions) Q2 2016 Segment Contribution 43% By Revenue 67% By Operating Profit (excluding Special Items and Corporate Expense) Positioning business for customer innovation and continued growth, while maintaining targeted margin levels. Financial Snapshot Q2 2016 Q2 2015 Variance Sales $88.1 $89.6 -1.6% Operating profit (excl. Special Items) $22.0 $21.0 4.8 25.0% 23.4% 160 bps Note: Please see the Appendix for a detailed reconciliation to GAAP results.

Aerospace 15 • Sales increased due to the acquisition of Parker Hannifin’s machined components facility in Q4 2015; partially offset by lower demand from certain larger distribution customers • Profit and the related margin, excluding Special Items, declined due to incremental costs due to short-term production inefficiencies, a less favorable product mix and higher costs of new product qualifications Initiatives • Executing plan to increase manufacturing throughput and address costs of production inefficiencies to enhance margins • Developing and qualifying new highly-engineered products; qualifying existing products for new applications or new customers • Leveraging a single aerospace platform to better serve customers and enhance margins (Unaudited, dollars in millions) Quarterly Commentary Immediate focus on sales and margin improvement. Q2 2016 Segment Contribution 22% By Revenue 15% By Operating Profit (excluding Special Items and Corporate Expense) Financial Snapshot Q2 2016 Q2 2015 Variance Sales $44.1 $43.2 2.0% Operating profit (excl. Special Items) $5.0 $8.1 -37.4 11.4% 18.6% -720 bps Note: Please see the Appendix for a detailed reconciliation to GAAP results.

Aerospace Macro Environment Macro Changes • Supply chain disruption ‒ BASN-driven inventory reductions in channel  Large aerospace distributors  OE warehouse consolidation ‒ Increased focus on “just in time” inventory • Build rate increases • Shift to composite aircraft 16 Impacts on TriMas • Min/max programs and inventory management • Less predictable order patterns and smaller lot sizes • Reduced sales volumes of certain higher margin distributor products • Increased price competitiveness – OE long- term agreement negotiations and increased supplier competitiveness • Expanded product offerings and increased manufacturing complexity • Additional capacity and automation required Good business with solid, long-term fundamentals – addressing shorter-term impact of current supply chain disruptions.

17 Monogram Aerospace Fasteners • Executing comprehensive recovery plan to meet current order demand, eliminate past dues and improve profitability • Implemented revised scheduling and production recovery plans for both fastener and collar facilities for remainder of year • Added capacity to improve manufacturing throughput • Integrating burndown plan for current past due orders based on existing order backlog • Tracking key performance indicators to measure progress – Schedule attainment – Sales/shipment dollars per day – Order intake – Aging/amount of past due orders • Added experienced resources to supplement team • Leverage additional collar opportunities Executing comprehensive plans to improve performance. Martinic Engineering (Machined Components) • Completed facility-integration activities mid-Q2 • Transitioning Tolleson facility to a profit center – Addressing pricing fundamentals on certain LTA part numbers in cooperation with customer • Qualified nearly 50 incremental part numbers under current LTA • Qualified 14 additional part numbers with new customers under contracts • Combined potential value of newly qualified parts in excess of $6 million annually – expect some orders to begin in 2016 Aerospace Improvement Initiatives

Energy 18 • Sales decreased due to reduced demand from upstream oil customers and the impact of lower levels of downstream capex spending • Cost savings achieved from restructuring actions more than offset the impact of the reduced sales levels and lower related fixed cost absorption Initiatives • Leveraging lower costs of business restructuring to capitalize on end market opportunities • Driving continued manufacturing and operational improvements across locations • Accelerating and broadening the move of the manufacture of standard products from Houston to Reynosa (Unaudited, dollars in millions) Quarterly Commentary Leveraging lower cost structure to drive margin improvement. Q2 2016 Segment Contribution 20% By Revenue Financial Snapshot Q2 2016 Q2 2015 Variance Sales $40.0 $50.2 -20.3% Operating profit (excl. Special Items) $1.8 ($3.3) n/m 4.5% -6.5% n/ Note: Please see the Appendix for a detailed reconciliation to GAAP results. 6% By Operating Profit (excluding Special Items and Corporate Expense)

Engineered Components 19 • Cylinder sales declined due to weaker industrial end markets • Engine and compressor sales decreased more than 50% as a result of lower oil prices – operated at a slight loss due to reduced demand • Operating profit, excluding Special Items, decreased as a result of reduced sales levels and related lower fixed cost absorption Initiatives • Implemented cost reduction actions to mitigate top-line pressures and remain breakeven in engine business • Adding incremental cylinder capabilities and longer- term capacity • Expanding engine and compressor product lines to diversify and reduce end-market cyclicality (Unaudited, dollars in millions) Quarterly Commentary Focused on mitigating top-line pressures by reducing costs and increasing efficiencies. Q2 2016 Segment Contribution 15% By Revenue Note: Please see the Appendix for a detailed reconciliation to GAAP results. Financial Snapshot Q2 2016 Q2 2015 Variance Sales $31.2 $42.0 -25.7% Operating profit (excl. Special Items) $3.9 $6.3 -38.2 12.4% 15.0% -260 bps 12% By Operating Profit (excluding Special Items and Corporate Expense)

Segment Performance Summary 20 (Unaudited, dollars in millions) Sales Operating Profit Margin (excluding Special Items) Q2 2016 Q1 2016 Q2 2015 FY 2015 Packaging $88.1 $80.1 $89.6 $334.3 Aerospace $44.1 $40.5 $43.2 $176.5 Energy $40.0 $44.8 $50.2 $193.4 Engineered Components $31.2 $37.5 $42.0 $159.8 Q2 2016 Q1 2016 Q2 2015 FY 2015 Packaging 25.0% 22.9% 23.4% 24.0% Aerospace 11.4% 8.7% 18.6% 18.1% Energy 4.5% 2.4% -6.5% -0.8% Engineered Components 12.4% 15.3% 15.0% 13.6% Cost savings actions being realized in a challenging top-line environment. Note: Please see the Appendix for a detailed reconciliation to GAAP results. Historical figures may be found in the corresponding earnings releases located on www.trimascorp.com under the “Investors” section.

Outlook and Summary

Updated FY 2016 Segment Assumptions 22 Sales(1) Operating Profit Margin (excl. Special Items) Full Year 2016 Commentary Packaging Previous 3% – 5% 4% – 8% 23% – 24% 22% – 24% • Organic growth driven primarily by new products and increased share in emerging markets – anticipate some customer launch delays into 2017 • Executing on pipeline of productivity initiatives to fund growth while maintaining margins • Expect pressure resulting from currency moves following Brexit Aerospace Previous 0% – 2% 9% – 11% 11% – 13% 16% – 18% • Distributor orders trending lower than expected – significant impact on margin given resulting less favorable product sales mix • Short-term production inefficiencies and integration costs impact sales and profitability – recovery plan demonstrating improvement • Steady OE build rates and the Q4 2015 acquisition of Parker Hannifin facility expected to aid top-line Energy Previous (15%) – (20%) (10%) – (15%) 4% – 6% 3% – 6% • Sales impacted by reduced upstream and downstream channel spending and exiting of lower margin business • Margin level positively impacted by restructuring of footprint and supply chain, cost-out actions and operational efficiencies Engineered Components Previous (15%) – (20%) (7%) – (10%) 13% – 15% 13% – 15% • Industrial market slowdown expected to continue to impact cylinder sales – sales expected to be down year-over-year • Mitigate impact of lower cylinder sales via productivity initiatives • Further engine-related top-line pressure – focused on offsetting to remain near breakeven Top-line pressures more significant than planned – holding or improving margin rates in three out of four of the segments. Note: All of the figures and comments on this slide exclude any current and future Special Items. (1) 2016 revenue growth versus 2015.

Updated FY 2016 Additional Assumptions Full Year Outlook (Updated as of 7/28/16) Comments Interest Expense Previous $13 – $15 million $14 – $16 million • Effective July 1, 2016, interest expense on the majority of variable-rate debt in the Credit Agreement fixed via interest rate swap agreements (through 2020) • Impact of higher interest rates expected to more than offset interest savings from debt reduction • Debt reduction remains a priority Capital Expenditures Previous 3% – 4% of sales 4% – 5% • Continuing to invest in Packaging and Aerospace for top-line growth and margin expansion • Planning additional low-cost country capacity in Packaging to serve global customers • Expanding capacity of cylinder business to capitalize on North American market position Tax Rate 31% – 33% • Income more heavily weighted toward United States based on planned income mix and due to restructuring actions within the Energy segment Corporate Expense – • Cash Costs • Stock Compensation Previous $22 – $24 million $9 million $25 – $27 million $10 million • Expected annual run rate of cash spend reduced following the Cequent spin-off in June 2015 • Lower attainment of performance-based equity awards resulted in lower stock compensation expense in 2014 and 2015 • Target awards and metrics reset following the spin-off • Includes long term incentive compensation for all of TriMas 23 From Continuing Operations Note: All of the figures and comments on this slide exclude any current and future Special Items.

Updated FY 2016 Outlook Full Year Outlook (as of 4/28/16)(1) Full Year Outlook (as of 7/28/16) Comments Net Sales (2%) – 2% (4%) – (7%) • Top-line pressure across all segments • Expect some pressure resulting from currency moves following Brexit • Expect ~1% growth from existing acquisition Earnings Per Share, diluted (excl. Special Items) $1.35 – $1.45 $1.22 – $1.30 • Reduction in EPS driven by weaker top-line and more gradual Aerospace margin improvement • Savings from Financial Improvement Plan and productivity initiatives expected to help mitigate impact of weak end markets Free Cash Flow(2) (excl. Special Items) $60 – $70 million $55 – $65 million • Managing working capital and capital expenditures consistent with environment, while still funding growth programs • Reduction in FCF outlook as a result of lower earnings; target remains at ~ 100% of net income Note: All of the figures and comments on this slide exclude any current and future Special Items. (1) Original guidance provided on 2/25/16. (2) Free Cash Flow is defined as Net Cash Provided by Operating Activities of Continuing Operations, excluding the cash impact of Special Items, less Capital Expenditures. 24 Focused on execution of sales and margin improvement plans. From Continuing Operations

Summary • Focus on managing what we can control – align cost structure with expected end market demand • Grow higher-margin Packaging and Aerospace platforms – continue to invest and leverage – Immediate focus on achieving Aerospace’s operational improvements • Drive improved profitability from restructured Energy business • Improve cash flow conversion and ROIC • Drive continuous productivity pipeline 25 Focused on operational execution for the remainder of 2016.

Questions and Answers

Appendix

Second Quarter YTD Summary 28 (Unaudited, dollars in millions, except per share amounts) Note: Please see the Appendix for a detailed reconciliation to GAAP results. (1) Free Cash Flow is defined as Net Cash Provided by Operating Activities of Continuing Operations, excluding the cash impact of Special Items, less Capital Expenditures. • YTD 2016 sales declined nearly 10% as compared to YTD 2015 – weakness in the oil-related and industrial end markets, aerospace distributor volumes and unfavorable currency exchange more than offset organic initiatives and the results of a recent acquisition • YTD 2016 operating profit margin percentage, excluding Special Items, increased 60 basis points as the positive impact of the Financial Improvement Plan and productivity initiatives more than offset the impact of reduced sales and related lower fixed cost absorption • Income and diluted EPS, excluding Special Items, were relatively flat year-over-year • Solid Free Cash Flow generation in YTD 2016; total debt decreased as compared to Q2 2015 Held EPS year-over-year, despite external top-line pressures and the impact of challenges in Aerospace. ( f ro m co ntinuing o perat io ns) Q2 YTD 2016 Q2 YTD 2015 Variance Revenue $406.2 $449.0 -9.5% Operating Profit $35.1 $42.2 -16.9% Excl. Total Special Items, Operating Profit would have been: $47.5 $49.8 -4.6% Excl. Total Special Items, Operating Profit margin would have been: 11.7% 11.1% 60 bps Income $18.8 $20.4 -8.1% Excl. Total Special Items, Income would have been: $28.0 $27.6 1.4% Diluted earnings per share $0.41 $0.45 -8.9% Excl. Total Special Items, diluted earnings per share would have been: $0.61 $0.61 0.0% Free Cash Flow (1) $28.3 $7.6 273.4% Total Debt $406.3 $457.3 -11.2%

Condensed Consolidated Balance Sheet 29 (Dollars in thousands) June 30, December 31, 2016 2015 (unaudited) Assets Current assets: Cash and cash equivalents............................................................ 23,660$ 19,450$ Receivables, net........................................................................... 124,620 121,990 Inventories.................................................................................... 165,800 167,370 Prepaid expenses and other current assets..................................... 7,440 17,810 Total current assets................................................................... 321,520 326,620 Property and equipment, net.............................................................. 178,660 181,130 Goodwill........................................................................................... 377,430 378,920 Other intangibles, net........................................................................ 263,510 273,870 Other assets.................................................................................... 9,080 9,760 Total assets.............................................................................. 1,150,200$ 1,170,300$ Liabilities and Shareholders' Equity Current liabilities: Current maturities, long-term debt................................................... 13,820$ 13,850$ Accounts payable......................................................................... 77,820 88,420 Accrued liabilities.......................................................................... 41,690 50,480 Total current liabilities................................................................ 133,330 152,750 Long-term debt, net........................................................................... 392,460 405,780 Deferred income taxes...................................................................... 8,320 11,260 Other long-term liabilities................................................................... 57,890 53,320 Total liabilities........................................................................... 592,000 623,110 Total shareholders' equity........................................................... 558,200 547,190 Total liabilities and shareholders' equity....................................... 1,150,200$ 1,170,300$

Consolidated Statement of Operations 30 (Unaudited, dollars in thousands, except for per share amounts) Three months ended Six months ended 2016 2015 2016 2015 Net sales................................................................................................. 203,320$ 224,900$ 406,200$ 449,030$ Cost of sales............................................................................................ (146,240) (163,180) (293,200) (324,390) Gross profit........................................................................................... 57,080 61,720 113,000 124,640 Selling, general and administrative expenses............................................... (38,420) (42,510) (77,890) (82,410) Operating profit..................................................................................... 18,660 19,210 35,110 42,230 Other expense, net: Interest expense................................................................................... (3,310) (3,720) (6,750) (7,170) Debt financing and extinguishment costs................................................. - (1,970) - (1,970) Other income (expense), net.................................................................. 130 (290) 70 (1,610) Other expense, net............................................................................ (3,180) (5,980) (6,680) (10,750) Income from continuing operations before income tax expense...................... 15,480 13,230 28,430 31,480 Income tax expense.................................................................................. (5,000) (4,740) (9,650) (11,050) Income from continuing operations.............................................................. 10,480 8,490 18,780 20,430 Loss from discontinued operations, net of tax.............................................. - (6,780) - (4,740) Net income............................................................................................... 10,480 1,710 18,780 15,690 Earnings per share - basic: Continuing operations............................................................................ 0.23$ 0.19$ 0.41$ 0.45$ Discontinued operations......................................................................... - (0.15) - (0.10) Net income per share............................................................................ 0.23$ 0.04$ 0.41$ 0.35$ Weighted average common shares - basic 45,429,851 45,150,827 45,354,421 45,074,394 Earnings per share - diluted: Continuing operations............................................................................ 0.23$ 0.19$ 0.41$ 0.45$ Discontinued operations......................................................................... - (0.15) - (0.10) Net income per share............................................................................ 0.23$ 0.04$ 0.41$ 0.35$ Weighted average common shares - diluted 45,726,348 45,418,907 45,690,582 45,409,875 June 30, June 30,

Consolidated Statement of Cash Flow (Unaudited, dollars in thousands) 31 2016 2015 Cash Flows from Operating Activities: Net income.............................................................................................................................. 18,780$ 15,690$ Loss from discontinued operations............................................................................................. - (4,740) Income from continuing operations............................................................................................. 18,780 20,430 Adjustments to reconcile net income to net cash provided by operating activities: Loss on dispositions of property and equipment...................................................................... 1,120 300 Depreciation......................................................................................................................... 11,980 10,830 Amortization of intangible assets........................................................................................... 10,190 10,580 Amortization of debt issue costs............................................................................................ 670 1,020 Deferred income taxes.......................................................................................................... 230 (250) Non-cash compensation expense.......................................................................................... 4,140 2,870 Excess tax benefits from stock based compensation............................................................... (170) (270) Debt financing and extinguishment costs................................................................................ - 1,970 Increase in receivables.......................................................................................................... (3,660) (8,930) (Increase) decrease in inventories.......................................................................................... 1,130 (9,210) Decrease in prepaid expenses and other assets...................................................................... 10,650 510 Decrease in accounts payable and accrued liabilities............................................................... (21,710) (8,550) Other, net............................................................................................................................ (410) (820) Net cash provided by operating activities of continuing operations.......................................... 32,940 20,480 Net cash used for operating activities of discontinued operations........................................... - (14,030) Net cash provided by operating activities......................................................................... 32,940 6,450 Cash Flows from Investing Activities: Capital expenditures............................................................................................................. (12,960) (12,890) Net proceeds from disposition of property and equipment......................................................... 120 690 Net cash used for investing activities of continuing operations............................................... (12,840) (12,200) Net cash used for investing activities of discontinued operations............................................ - (2,510) Net cash used for investing activities............................................................................... (12,840) (14,710) Cash Flows from Financing Activities: Proceeds from borrowings on term loan facilities..................................................................... - 275,000 Repayments of borrowings on term loan facilities..................................................................... (6,950) (441,360) Proceeds from borrowings on revolving credit and accounts receivable facilities.......................... 216,580 697,890 Repayments of borrowings on revolving credit and accounts receivable facilities......................... (225,050) (703,390) Payments for deferred purchase price..................................................................................... - (5,710) Debt financing fees............................................................................................................... - (1,850) Shares surrendered upon vesting of options and restricted stock awards to cover tax obligations…...…………………………………………………………………………………….……… (650) (2,620) Proceeds from exercise of stock options................................................................................ 10 430 Excess tax benefits from stock based compensation............................................................... 170 270 Cash transferred to the Cequent businesses........................................................................... - (17,050) Net cash used for financing activities of continuing operations............................................... (15,890) (198,390) Net cash provided by financing activities of discontinued operations....................................... - 208,400 Net cash provided by (used for) financing activities........................................................... (15,890) 10,010 Cash and Cash Equivalents: Net increase for the period..................................................................................................... 4,210 1,750 At beginning of period........................................................................................................... 19,450 24,420 At end of period................................................................................................................ 23,660$ 26,170$ Supplemental disclosure of cash flow information: Cash paid for interest........................................................................................................ 5,860$ 9,690$ Cash paid for taxes........................................................................................................... 3,170$ 17,390$ June 30, Six months ended

Company and Business Segment Financial Information 32 (Unaudited, dollars in thousands, from continuing operations) Three months ended 2016 2015 2016 2015 Packaging Net sales................................................................................................................................................ 88,110$ 89,580$ 168,220$ 168,540$ Operating profit........................................................................................................................................ 21,410$ 20,710$ 39,250$ 38,220$ Special Items to consider in evaluating operating profit: Severance and business restructuring costs........................................................................................... 590$ 280$ 1,060$ 430$ Excluding Special Items, operating profit would have been................................................................... 22,000$ 20,990$ 40,310$ 38,650$ Aerospace Net sales................................................................................................................................................ 44,090$ 43,220$ 84,590$ 88,960$ Operating profit........................................................................................................................................ 3,550$ 7,220$ 7,010$ 15,300$ Special Items to consider in evaluating operating profit: Severance and business restructuring costs........................................................................................... 1,490$ 830$ 1,560$ 1,620$ Excluding Special Items, operating profit would have been................................................................... 5,040$ 8,050$ 8,570$ 16,920$ Energy Net sales................................................................................................................................................ 39,950$ 50,150$ 84,700$ 101,310$ Operating loss......................................................................................................................................... (3,090)$ (7,170)$ (6,700)$ (6,830)$ Special Items to consider in evaluating operating profit (loss): Severance and business restructuring costs........................................................................................... 4,890$ 3,910$ 9,590$ 5,340$ Excluding Special Items, operating profit (loss) would have been.......................................................... 1,800$ (3,260)$ 2,890$ (1,490)$ Engineered Components Net sales................................................................................................................................................ 31,170$ 41,950$ 68,690$ 90,220$ Operating profit........................................................................................................................................ 3,860$ 6,220$ 9,440$ 12,190$ Special Items to consider in evaluating operating profit: Severance and business restructuring costs........................................................................................... 20$ 60$ 170$ 140$ Excluding Special Items, operating profit would have been................................................................... 3,880$ 6,280$ 9,610$ 12,330$ Corporate expenses Operating loss......................................................................................................................................... (7,070)$ (7,770)$ (13,890)$ (16,650)$ Total Continuing Operations Net sales................................................................................................................................................ 203,320$ 224,900$ 406,200$ 449,030$ Operating profit........................................................................................................................................ 18,660$ 19,210$ 35,110$ 42,230$ Total Special Items to consider in evaluating operating profit........................................................................ 6,990$ 5,080$ 12,380$ 7,530$ Excluding Special Items, operating profit would have been................................................................... 25,650$ 24,290$ 47,490$ 49,760$ June 30, June 30, Six months ended

Additional Information Regarding Special Items Impacting Reported GAAP Financial Measures 33 (Unaudited, dollars in thousands, except for per share amounts) Three months ended Six months ended June 30, June 30, 2016 2015 2016 2015 Income from continuing operations, as reported.............................................................................................................. 10,480$ 8,490$ 18,780$ 20,430$ After-tax impact of Special Items to consider in evaluating quality of income from continuing operations: Severance and business restructuring costs....................................................................................................................... 5,130 4,030 9,220 5,930 Debt extinguishment costs............................................................................................................................................... - 1,240 - 1,240 Excluding Special Items, income from continuing operations would have been........................................................... 15,610$ 13,760$ 28,000$ 27,600$ Three months ended Six months ended June 30, June 30, 2016 2015 2016 2015 Diluted earnings per share from continuing operations, as reported................................................................................ 0.23$ 0.19$ 0.41$ 0.45$ After-tax impact of Special Items to consider in evaluating quality of EPS from continuing operations: Severance and business restructuring costs....................................................................................................................... 0.11 0.08 0.20 0.13 Debt extinguishment costs............................................................................................................................................... - 0.03 - 0.03 Excluding Special Items, EPS from continuing operations would have been................................................................ 0.34$ 0.30$ 0.61$ 0.61$ Weighted-average shares outstanding ......................................................................................................................... 45,726,348 45,418,907 45,690,582 45,409,875 2016 2015 2016 2015 Operating profit from continuing operations (excluding Special Items)……………………….……….................................... 25,650$ 24,290$ 47,490$ 49,760$ Corporate expenses (excluding Special Items)…………………………………………................................................................ 7,070 7,770 13,890 16,650 Segment operating profit (excluding Special Items)………………….................................................................................. 32,720$ 32,060$ 61,380$ 66,410$ Segment operating profit margin (excluding Special Items)…...……................................................................................ 16.1% 14.3% 15.1% 14.8% June 30, June 30, Three months ended Six months ended

Additional Information Regarding Special Items Impacting Reported GAAP Financial Measures 34 (Unaudited, dollars in thousands) As reported Special Items Excluding Special Items As reported Special Items Excluding Special Items Net cash provided by operating activities of continuing operations............................................................................................. 36,280$ 4,920$ 41,200$ 16,620$ -$ 16,620$ Less: Capital expenditures of continuing operations................................................................................................................ (6,980) - (6,980) (7,200) - (7,200) Free Cash Flow from continuing operations............................................................................................................................ 29,300 4,920 34,220 9,420 - 9,420 Income from continuing operations........................................................................................................................................ 10,480 5,130 15,610 8,490 5,270 13,760 Free Cash Flow as a percentage of income from continuing operations..................................................................................... 280% 219% 111% 68% As reported Special Items Excluding Special Items As reported Special Items Excluding Special Items Net cash provided by operating activities of continuing operations............................................................................................. 32,940$ 8,360$ 41,300$ 20,480$ -$ 20,480$ Less: Capital expenditures of continuing operations................................................................................................................ (12,960) - (12,960) (12,890) - (12,890) Free Cash Flow from continuing operations............................................................................................................................ 19,980 8,360 28,340 7,590 - 7,590 Income from continuing operations........................................................................................................................................ 18,780 9,220 28,000 20,430 7,170 27,600 Free Cash Flow as a percentage of income from continuing operations..................................................................................... 106% 101% 37% 28% Three months ended June 30, 20152016 Six months ended June 30, 2016 2015

Current Debt Structure 35 (Unaudited, dollars in thousands) As of June 30, 2016, TriMas had $123.7 million of cash and available liquidity under its revolving credit and accounts receivable facilities. June 30, December 31, 2016 2015 Cash and Cash Equivalents……………………………..………………… 23,660$ 19,450$ Credit Agreement……………………………………….. 347,870 371,820 Receivables facility and other……………………………….. 63,790 53,860 Debt issuance costs…………………………………… (5,380) (6,050) Total Debt………………………...………………………...………………………… 406,280 419,630 Key Ratios: B nk LTM EBITDA……………………………………………………………………………….……………………………………… 147,470$ 154,180$ Interest Coverage Ratio………………………………………………………………… 12.40 x 12.77 x Leverage Ratio…………………………………………………………………... 2.82 x 2.80 x Bank Covenants: Minimum Interest Coverage Ratio………………………………………………………………… 3.00 x 3.00 x Maximum Leverage Ratio………………………………………………………………………………… 3.50 x 3.50 x

LTM Bank EBITDA as Defined in Credit Agreement 36 (Unaudited, dollars in thousands) (1) As defined in the Credit Agreement dated June 30, 2015. (30,310)$ Interest expense....................................................................................................................... 13,640 Income tax expense.................................................................................................................. 5,140 Depreciation and amortization.................................................................................................... 44,310 Extraordinary non-cash charges................................................................................................. 75,680 Non-cash compensation expense............................................................................................... 7,610 Other non-cash expenses or losses........................................................................................... 14,990 Non-recurring expenses or costs relating to cost saving projects .................................................. 15,000 Acquisition integration costs...................................................................................................... 1,410 147,470$ Net income (loss) for the twelve months ended June 30, 2016.......................................................... Bank EBITDA - LTM Ended June 30, 2016 (1)…………………………………………………………………