Quick Takeaways
- TRS - TRIMAS CORP has 19 insiders with reported activity on this page.
- Net insider value flow over the last year: +$25,060,404.
- Recent transaction rows are available for direct filing-level review.
- Info
- Insider Trading
- Financials
- Holders
Insider Transactions Reported by 19 Insiders of TRIMAS CORP
- Symbol
- TRS on Nasdaq
- Location
- Bloomfield Hills, MI
What Changed
- Buy value: $25,060,404; sell value: $0.
- Net share flow: +990,779.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Official SEC Source
Insider trading overview
Last 12 monthsNet insider flow leans to buying over the last 12 months. Net value: +$25,060,404.
Buys
$25,060,404
Shares: 990,779
Insiders: 4
Sells
$0
Shares: 0
Insiders: 0
Net
+$25,060,404
Shares: +990,779
Insiders: 4
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 59.77 | 0 | $2,354 | $0 | +$2,354 |
| 3-6 | 2,074 | 0 | $65,271 | $0 | +$65,271 |
| 6-9 | 66.36 | 0 | $2,348 | $0 | +$2,348 |
| 9-12 | 988,579 | 0 | $24,990,431 | $0 | +$24,990,431 |
TRIMAS CORP executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Shawn Sedaghat | Director, 10%+ Owner | $216,695,693 | +$24,840,732 | +13% | Mixed | 14 Mar 2026 |
| Trend International Holding AG | 10%+ Owner | $104,600,328 | Mixed | 15 Oct 2024 | ||
| Thomas A. Amato | President and CEO, Director | $8,031,493 | Mixed | 14 Mar 2025 | ||
| Thomas James Snyder | President and CEO, Director | $3,740,853 | Mixed | 24 Jun 2025 | ||
| Teresa M. Finley | Director | $2,749,071 | Mixed | 20 Mar 2026 | ||
| Herbert K. Parker | Director | $2,601,241 | Mixed | 14 Mar 2026 | ||
| Daniel P. Tredwell | Director | $2,534,524 | +$9,397 | +0.37% | Mixed | 14 Mar 2026 |
| Nick L. Stanage | Director | $1,925,244 | Mixed | 14 Mar 2026 | ||
| Jill S. Stress | Chief Human Resources Officer | $1,427,246 | Mixed | 14 Mar 2026 | ||
| Jodi F. Robin | General Counsel and Secretary | $1,401,078 | Mixed | 14 Mar 2026 | ||
| Holly M. Boehne | Director | $1,156,369 | Mixed | 14 Mar 2026 | ||
| Scott A. Mell | Chief Financial Officer | $1,078,099 | Mixed | 14 Mar 2025 | ||
| Jeffrey A. Fielkow | Director | $768,839 | +$75,410 | +11% | Mixed | 14 Mar 2026 |
| Fabio Leandro Matheus Salik | President, TriMas Packaging | $693,415 | Mixed | 01 Aug 2023 | ||
| Paul Swart | Chief Financial Officer | $531,995 | Mixed | 14 Mar 2026 | ||
| Jeffrey M. Greene | Director | $498,166 | Mixed | 14 Mar 2025 | ||
| Adrianne Shapira | Director | $405,011 | +$134,864 | +50% | Mixed | 14 Mar 2026 |
| Samuel Valenti III | Chairman, Director | $384,947 | Mixed | 14 Mar 2024 | ||
| John Philip Schaefer | President, TriMas Aerospace | $272,186 | Mixed | 07 Jun 2022 |
Top shareholders of TRIMAS CORP (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| Shawn Sedaghat |
3/4/5
|
Director, 10%+ Owner |
15%
|
6,061,418
|
$216,695,693 | +$24,840,732 | 14 Mar 2026 | |
| BANK OF AMERICA CORP /DE/ |
13D/G
13F
|
Company |
10%
|
4,161,891
|
$144,875,426 | +$13,876,380 | 31 Dec 2025 | |
| Trend International Holding AG |
13D/G
3/4/5
|
Shawn Sedaghat · 10%+ Owner |
15%
|
6,054,425
|
$129,504,151 | +$21,021,750 | 20 May 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
8.8%
|
3,582,932
|
$127,014,939 | — | 31 Dec 2025 | |
| Allspring Global Investments Holdings, LLC |
13D/G
13F
|
Company |
6.1%
|
2,488,390
|
$96,151,390 | $0 | 30 Sep 2025 | |
| BlackRock, Inc. |
13F
13D/G
|
Company |
6.2%
from 13D/G
|
2,397,282
|
$84,983,651 | — | 31 Dec 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
5.3%
|
2,168,888
|
$76,887,186 | — | 31 Dec 2025 | |
| Jefferies Financial Group Inc. |
13F
|
Company |
3.8%
|
1,552,499
|
$55,036,090 | — | 31 Dec 2025 | |
| PZENA INVESTMENT MANAGEMENT LLC |
13D/G
13F
|
Company |
3.2%
|
1,302,265
|
$50,319,650 | $0 | 30 Sep 2025 | |
| FIDUCIARY MANAGEMENT INC /WI/ |
13D/G
|
— |
5%
|
2,013,835
|
$43,075,931 | -$12,770,386 | 10 Feb 2025 | |
| ADVISORY RESEARCH INC |
13F
|
Company |
2.7%
|
1,096,013
|
$38,853,661 | — | 31 Dec 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
2.1%
|
876,156
|
$31,064,708 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
|
Company |
2.1%
|
846,830
|
$30,020,124 | — | 31 Dec 2025 | |
| Nuveen, LLC |
13F
|
Company |
2.1%
|
844,050
|
$29,921,573 | — | 31 Dec 2025 | |
| Permian Investment Partners, LP |
13F
|
Company |
2%
|
823,481
|
$29,192,401 | — | 31 Dec 2025 | |
| WELLINGTON MANAGEMENT GROUP LLP |
13D/G
13F
|
Company |
3.3%
|
1,361,952
|
$29,132,153 | $0 | 31 Mar 2025 | |
| MORGAN STANLEY |
13F
|
Company |
2%
|
803,428
|
$28,481,557 | — | 31 Dec 2025 | |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ |
13F
|
Company |
1.7%
|
701,134
|
$24,855,200 | — | 31 Dec 2025 | |
| Bellecapital International Ltd. |
13F
|
Company |
1.7%
|
685,855
|
$24,313,560 | — | 31 Dec 2025 | |
| KENNEDY CAPITAL MANAGEMENT LLC |
13F
|
Company |
1.7%
|
678,672
|
$24,058,922 | — | 31 Dec 2025 | |
| ALTA FOX CAPITAL MANAGEMENT, LLC |
13F
|
Company |
1.4%
|
563,375
|
$19,971,644 | — | 31 Dec 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
1.2%
|
497,826
|
$17,647,932 | — | 31 Dec 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
1.2%
|
474,571
|
$16,823,542 | — | 31 Dec 2025 | |
| Alberta Investment Management Corp |
13F
|
Company |
1.1%
|
468,400
|
$16,604,780 | — | 31 Dec 2025 | |
| LOOMIS SAYLES & CO L P |
13F
|
Company |
1.1%
|
452,362
|
$16,036,233 | — | 31 Dec 2025 | |
| Point72 Asset Management, L.P. |
13F
|
Company |
1.1%
|
446,346
|
$15,822,966 | — | 31 Dec 2025 | |
| FRANKLIN RESOURCES INC |
13F
|
Company |
1.1%
|
438,902
|
$15,559,076 | — | 31 Dec 2025 | |
| FIRST MANHATTAN CO. LLC. |
13F
|
Company |
0.84%
|
342,070
|
$12,126,382 | — | 31 Dec 2025 | |
| Ophir Asset Management Pty Ltd |
13F
|
Company |
0.79%
|
323,742
|
$11,476,654 | — | 31 Dec 2025 | |
| First Eagle Investment Management, LLC |
13F
|
Company |
0.72%
|
294,706
|
$10,447,328 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.72%
|
292,307
|
$10,362,283 | — | 31 Dec 2025 | |
| LORD, ABBETT & CO. LLC |
13F
|
Company |
0.71%
|
290,812
|
$10,309,000 | — | 31 Dec 2025 | |
| ALGERT GLOBAL LLC |
13F
|
Company |
0.7%
|
285,944
|
$10,137,000 | — | 31 Dec 2025 | |
| Simcoe Capital Management, LLC |
13F
|
Company |
0.66%
|
268,845
|
$9,530,555 | — | 31 Dec 2025 | |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.62%
|
252,963
|
$8,967,538 | — | 31 Dec 2025 | |
| TUDOR INVESTMENT CORP ET AL |
13F
|
Company |
0.6%
|
243,876
|
$8,645,404 | — | 31 Dec 2025 | |
| JANE STREET GROUP, LLC |
13F
|
Company |
0.57%
|
233,690
|
$8,284,310 | — | 31 Dec 2025 | |
| Squarepoint Ops LLC |
13F
|
Company |
0.57%
|
233,117
|
$8,263,998 | — | 31 Dec 2025 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
0.57%
|
231,900
|
$8,220,855 | — | 31 Dec 2025 | |
| Impax Asset Management Group plc |
13F
|
Company |
0.56%
|
230,000
|
$8,153,500 | — | 31 Dec 2025 | |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP |
13F
|
Company |
0.56%
|
228,576
|
$8,103,019 | — | 31 Dec 2025 | |
| Thomas A. Amato |
3/4/5
|
President and CEO, Director |
—
class O/S missing
|
332,567
|
$8,031,493 | — | 14 Mar 2025 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
0.51%
|
208,870
|
$7,404,442 | — | 31 Dec 2025 | |
| Hudson Bay Capital Management LP |
13F
|
Company |
0.51%
|
206,708
|
$7,327,799 | — | 31 Dec 2025 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.45%
|
184,282
|
$6,532,794 | — | 31 Dec 2025 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
0.42%
|
171,719
|
$6,087,439 | — | 31 Dec 2025 | |
| SEI INVESTMENTS CO |
13F
|
Company |
0.42%
|
170,064
|
$6,028,772 | — | 31 Dec 2025 | |
| BARINGTON COMPANIES MANAGEMENT, LLC |
13F
|
Company |
0.32%
|
131,100
|
$4,647,495 | — | 31 Dec 2025 | |
| TWO SIGMA ADVISERS, LP |
13F
|
Company |
0.3%
|
124,200
|
$4,402,890 | — | 31 Dec 2025 | |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP |
13F
|
Company |
0.3%
|
122,628
|
$4,347,163 | — | 31 Dec 2025 |
Recent Insider Transactions by Companies or Individuals for TRIMAS CORP
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Teresa Finley | TRS | Common Stock | Tax liability | -7.61% | -6,192 | 75,152 | 20 Mar 2026 | Direct | ||
| Shawn Sedaghat | TRS | Common Stock | Award | 0.07% | 2,853 | 4,177,660 | 14 Mar 2026 | Direct | ||
| Paul Swart | TRS | Common Stock | Award | 85.3% | 6,849 | 14,881 | 14 Mar 2026 | Direct | ||
| Jodi F. Robin | TRS | Common Stock | Tax liability | -5.74% | -2,388 | 39,191 | 14 Mar 2026 | Direct | ||
| Jodi F. Robin | TRS | Common Stock | Award | 15% | 5,422 | 41,579 | 14 Mar 2026 | Direct | ||
| Jill S. Stress | TRS | Common Stock | Tax liability | -7.69% | -1,999 | 23,990 | 14 Mar 2026 | Direct | ||
| Jeffrey A. Fielkow | TRS | Common Stock | Award | 16.2% | 2,853 | 20,506 | 14 Mar 2026 | Direct | ||
| Adrianne Shapira | TRS | Common Stock | Award | 33.7% | 2,853 | 11,329 | 14 Mar 2026 | Direct | ||
| Herbert K. Parker | TRS | Common Stock | Award | 4.08% | 2,853 | 72,762 | 14 Mar 2026 | Direct | ||
| Holly M. Boehne | TRS | Common Stock | Award | 9.67% | 2,853 | 32,346 | 14 Mar 2026 | Direct | ||
| Nick L. Stanage | TRS | Common Stock | Award | 5.59% | 2,853 | 53,853 | 14 Mar 2026 | Direct | ||
| Daniel P. Tredwell | TRS | Common Stock | Award | 4.71% | 2,853 | 63,396 | 14 Mar 2026 | Direct | ||
| Teresa Finley | TRS | Common Stock | Award | 3.63% | 2,853 | 81,344 | 14 Mar 2026 | Direct | ||
| Jodi F. Robin | TRS | Common Stock | Tax liability | -3.03% | -1,128 | 36,157 | 11 Mar 2026 | Direct | ||
| Jill S. Stress | TRS | Common Stock | Tax liability | -4.16% | -1,128 | 25,989 | 11 Mar 2026 | Direct | ||
| Daniel P. Tredwell | TRS | Common Stock | Purchase | 0.1% | $2,354 | $39.38 | 59.77 | 60,543 | 05 Mar 2026 | Direct |
| Jodi F. Robin | TRS | Common Stock | Tax liability | -6.27% | -2,493 | 37,285 | 12 Feb 2026 | Direct | ||
| Jill S. Stress | TRS | Common Stock | Tax liability | -8.45% | -2,502 | 27,117 | 12 Feb 2026 | Direct | ||
| Paul Swart | TRS | Common Stock | Award | 719.6% | 7,052 | 8,032 | 01 Jan 2026 | Direct | ||
| Daniel P. Tredwell | TRS | Common Stock | Purchase | 0.12% | $2,351 | $31.94 | 73.6 | 60,483 | 12 Nov 2025 | Direct |
| Jeffrey A. Fielkow | TRS | Common Stock | Purchase | 12.8% | $62,920 | $31.46 | 2,000 | 17,653 | 11 Nov 2025 | Direct |
| Daniel P. Tredwell | TRS | Common Stock | Purchase | 0.11% | $2,348 | $35.39 | 66.36 | 60,409 | 11 Aug 2025 | Direct |
| Thomas James Snyder | TRS | Common Stock | Award | 152,439 | 152,439 | 24 Jun 2025 | Direct | |||
| Thomas James Snyder | TRS | Employee Stock Option (Right to buy) | Award | 900,000 | 200,000 | 24 Jun 2025 | Direct | |||
| Adrianne Shapira | TRS | Common Stock | Purchase | 89.4% | $103,292 | $25.82 | 4,000 | 8,476 | 05 Jun 2025 | Direct |
| Adrianne Shapira | TRS | Common Stock | Purchase | 36.6% | $31,572 | $26.31 | 1,200 | 4,476 | 04 Jun 2025 | Direct |
| Adrianne Shapira | TRS | Common Stock | Award | 3,276 | 3,276 | 23 May 2025 | Direct | |||
| Shawn Sedaghat | TRS | Common Stock | Purchase | 4.03% | $1,908,214 | $26.16 | 72,937 | 1,883,758 | 22 May 2025 | See footnote |
| Shawn Sedaghat | TRS | Common Stock | Purchase | 29.3% | $10,429,772 | $25.43 | 410,172 | 1,810,821 | 21 May 2025 | See footnote |
| Shawn Sedaghat | TRS | Common Stock | Purchase | 8.1% | $2,697,216 | $25.70 | 104,957 | 1,400,649 | 20 May 2025 | See footnote |
| Shawn Sedaghat | TRS | Common Stock | Purchase | 24.4% | $6,459,217 | $25.39 | 254,400 | 1,295,692 | 19 May 2025 | See footnote |
| Jeffrey A. Fielkow | TRS | Common Stock | Purchase | 3.3% | $12,490 | $24.98 | 500 | 15,653 | 19 May 2025 | Direct |
| Daniel P. Tredwell | TRS | Common Stock | Purchase | 0.16% | $2,344 | $24.72 | 94.85 | 60,343 | 12 May 2025 | Direct |
| Shawn Sedaghat | TRS | Common Stock | Purchase | 1.65% | $406,100 | $23.99 | 16,930 | 1,041,292 | 01 May 2025 | See footnote |
| Shawn Sedaghat | TRS | Common Stock | Purchase | 13.7% | $2,940,213 | $23.83 | 123,388 | 1,024,362 | 30 Apr 2025 | See footnote |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.