TriMas
Makes packaging, life-sciences components, and compressed-gas cylinders after the Aerospace divestiture.
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Breakdown13F · Form 4
Institutions and insiders are filed separately and overlap, so together they can pass the whole company. No split is drawn from them.
Shares outstanding 35.83M · Float 29.02M · 81.0% free float
A Form 4 total here can count shares the filer formally disclaims — an award voted by proxy, for instance — which the holder's own Schedule 13D/G excludes, so where the two disagree the schedule's smaller figure is used.
Institutions13F, as of Jun 30, 2026
213 holders · 31.55M shares · 44 new positions · 107 increased · 73 reduced · 27 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 2.53M | 7.06% | +33.3K | Aug 7, 2026 |
| Dimensional Fund Advisors LP | 2.26M | 6.31% | −420 | Aug 11, 2026 |
| Allspring Global Investments Holdings, LLC | 1.90M | 5.32% | −605.5K | Aug 13, 2026 |
| Vanguard Portfolio Management LLC | 1.68M | 4.69% | −93.6K | Aug 13, 2026 |
| Vanguard Capital Management LLC | 1.41M | 3.93% | −172.4K | Aug 13, 2026 |
| Advisory Research Inc | 1.21M | 3.38% | +91.9K | Aug 13, 2026 |
| Permian Investment Partners, LP | 1.17M | 3.25% | −37.1K | Aug 14, 2026 |
| American Century Companies Inc | 1.15M | 3.21% | +919.9K | Aug 12, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Shawn Sedaghatincl. Trend International Holding AG | 16.90% | 6.05M | 13D | Jun 8, 2026 ↗ |
| Bank of America Corp /DE/ | 10.20% | 4.16M | 13G | Feb 11, 2026 ↗ |
| BlackRock, Inc. | 6.20% | 2.54M | 13G | Jul 16, 2025 ↗ |
| Allspring Global Investments Holdings, LLC | 6.10% | 2.49M | 13G | Oct 10, 2025 ↗ |
| Fiduciary Management Inc /WI/ | 5.00% | 2.01M | 13G | Feb 20, 2025 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Shawn Sedaghat | director, 10 percent owner: | 6.05M | 16.90% | Jul 16, 2026 |
| Thomas A. Amato | director, officer: President and CEO | 332.6K | 0.93% | Mar 18, 2025 |
| Thomas James Snyder | director, officer: President and CEO | 130.3K | 0.36% | Jun 25, 2026 |
| Teresa Finley | director | 75.2K | 0.21% | Mar 23, 2026 |
| Daniel P. Tredwell | director | 63.5K | 0.18% | Aug 14, 2026 |
| Herbert K. Parker | director | 57.8K | 0.16% | Jul 1, 2026 |
| Nick L. Stanage | director | 53.9K | 0.15% | Mar 16, 2026 |
| Scott A. Mell | officer: Chief Financial Officer | 44.6K | 0.12% | Mar 18, 2025 |
| Jodi F. Robin | officer: General Counsel and Secretary | 34.2K | 0.10% | May 7, 2026 |
| Holly M. Boehne | director | 32.3K | 0.09% | Mar 16, 2026 |
2 ten-percent owners hold 7.19M shares by Form 4, outside the officers-and-directors figure above · 21 people have not refiled in the last 18 months (4.19M shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Aug 12, 2026 | Daniel P. Tredwelldirector | Purchase | 64 | $39.63 | 63,522 |
| Jun 30, 2026 | Herbert K. Parkerdirector | Sale | 15,000 | $45.03 | 57,762 |
| May 13, 2026 | Daniel P. Tredwelldirector | Purchase | 62 | $40.58 | 63,458 |
| May 7, 2026 | Jodi F. Robinofficer: General Counsel and Secretary | Sale | 2,000 | $41.61 | 34,191 |
| May 5, 2026 | Jodi F. Robinofficer: General Counsel and Secretary | Sale | 3,000 | $41.10 | 36,191 |
| Mar 5, 2026 | Daniel P. Tredwelldirector | Purchase | 60 | $39.38 | 60,543 |
| Nov 12, 2025 | Daniel P. Tredwelldirector | Purchase | 74 | $31.94 | 60,483 |
| Nov 11, 2025 | Jeffrey A. Fielkowdirector | Purchase | 2,000 | $31.46 | 17,653 |
CongressHouse and Senate disclosures
Not reported.