TriMas Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NasdaqGS:TRS Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
12 Aug 26	BuyUS$2,524	Daniel Tredwell	Individual	63.69	US$39.63
13 May 26	BuyUS$2,522	Daniel Tredwell	Individual	62.14	US$40.58
07 May 26	SellUS$206,495	Jodi Robin	Individual	5,000	US$41.61
05 Mar 26	BuyUS$2,354	Daniel Tredwell	Individual	59.77	US$39.38
12 Nov 25	BuyUS$2,351	Daniel Tredwell	Individual	73.6	US$31.94
11 Nov 25	BuyUS$62,920	Jeffrey Fielkow	Individual	2,000	US$31.46

Insider Trading Volume

Insider Buying: TRS insiders have bought more shares than they have sold in the past 3 months.

Ownership Breakdown

What is the ownership structure of TRS?
Owner Type	Number of Shares	Ownership Percentage
Private Companies	0	0%
Individual Insiders	9,007,514	22.9%
Institutions	30,249,001	77.1%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 83.73% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
16.9%	Shahrokh Sedaghat	6,062,673	US$234.0m	0.01%	no data
7.05%	BlackRock, Inc.	2,530,345	US$97.7m	1.33%	no data
6.3%	Dimensional Fund Advisors LP	2,259,471	US$87.2m	-0.02%	0.01%
5.75%	Daniel Villarón	2,061,420	US$79.6m	0%	no data
5.31%	Allspring Global Investments, LLC	1,904,393	US$73.5m	-24.1%	0.1%
4.69%	Vanguard Portfolio Management, LLC	1,681,687	US$64.9m	-5.27%	no data
4.46%	Vanguard Capital Management, LLC	1,599,258	US$61.7m	-10.9%	no data
3.38%	Advisory Research, Inc.	1,211,587	US$46.8m	8.21%	4.88%
3.25%	Permian Investment Partners, LP	1,165,414	US$45.0m	-3.08%	3.58%
3.21%	American Century Investment Management Inc	1,150,388	US$44.4m	399%	0.01%
2.84%	Geode Capital Management, LLC	1,019,286	US$39.3m	16.8%	no data
2.74%	Jefferies Financial Group Inc.	981,933	US$37.9m	-36.6%	0.38%
2.25%	Punch & Associates Investment Management, Inc.	807,292	US$31.2m	230%	1.64%
2.19%	State Street Investment Management	784,145	US$30.3m	-3.97%	no data
1.61%	Arrowstreet Capital, Limited Partnership	579,276	US$22.4m	62.1%	0.01%
1.52%	Massachusetts Financial Services Company	543,685	US$21.0m	-12.6%	no data
1.46%	Teachers Insurance and Annuity Association-College Retirement Equities Fund	523,712	US$20.2m	-1.52%	no data
1.26%	Two Sigma Investments, LP	453,425	US$17.5m	-3.61%	0.01%
1.21%	Citadel Advisors LLC	432,376	US$16.7m	-2.81%	0.01%
1.2%	Loomis, Sayles & Company, L.P.	430,537	US$16.6m	-1.46%	0.02%
1.18%	Charles Schwab Investment Management, Inc.	424,865	US$16.4m	-12.2%	no data
1.03%	Nuveen Asset Management LLC	370,386	US$14.3m	-0.04%	0.01%
1.02%	BNY Asset Management	365,841	US$14.1m	102%	no data
1.01%	Oberweis Asset Management, Inc.	362,000	US$14.0m	0%	0.29%
0.93%	Thomas Amato	332,567	US$12.8m	0%	no data

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2026/09/18 22:11
End of Day Share Price	2026/09/18 00:00
Earnings	2026/06/30
Annual Earnings	2025/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

TriMas Corporation is covered by 14 analysts. 2 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
Rudolf Hokanson	Barrington Research Associates, Inc.
Scott Graham	BMO Capital Markets Equity Research
Hamed Khorsand	BWS Financial Inc.