As of November 7, 2026, 2 holders' latest Schedule 13D or 13G filings report owning 5% or more of Trimas Corp. The largest reported stake is Trend International Holding AG's, at 16.9%. 12 filings are on record since July 16, 2025 (Schedule 13D/A, June 8, 2026).
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Key facts
- · Reporting person: Bank Of America Corp · Sole voting: 0 · Shared voting: 166,665 · Sole dispositive: 0 · Shared dispositive: 81,295 · SCHEDULE 13G/A, 2026-11-06
- · Reporting person: Allspring Global Investments Holdings, LLC · Sole voting: 1,418,525 · Shared voting: 0 · Sole dispositive: 1,419,484 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-10-07
- · Reporting person: Trend International Holding AG · Sole voting: 0 · Shared voting: 4,170,667 · Sole dispositive: 0 · Shared dispositive: 4,170,667 · SCHEDULE 13D/A, 2026-06-08
- · Reporting person: The Vanguard Group · Sole voting: 0 · Shared voting: 0 · Sole dispositive: 0 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-03-27
- · Reporting person: Capital International Investors · Sole voting: 0 · Shared voting: 0 · Sole dispositive: 0 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-02-13
Trimas Corp has 12 Schedule 13D or 13G filings on record since 2025-07-16. 2 holders' latest filing reports 5% or more of common stock. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Trend International Holding AG | 16.9% | 4,170,667 | SCHEDULE 13D/A, 2026-06-08 | 2026-03-02 |
| BlackRock, Inc. | 6.2% | 2,537,285 | SCHEDULE 13G/A, 2025-07-16 | 2025-06-30 |
| Allspring Global Investments Holdings, LLC | 4% | 1,419,484 | SCHEDULE 13G/A, 2026-10-07 | 2026-09-30 |
| Pzena Investment Management LLC | 3.2% | 1,302,265 | SCHEDULE 13G/A, 2025-10-14 | 2025-09-30 |
| Bank Of America Corp | 0.5% | 167,183 | SCHEDULE 13G/A, 2026-11-06 | 2026-09-30 |
| The Vanguard Group | 0% | 0 | SCHEDULE 13G/A, 2026-03-27 | 2026-03-13 |
| Capital International Investors | 0% | 0 | SCHEDULE 13G/A, 2026-02-13 | 2025-12-31 |
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More on Trimas Corp and the records around it.
Trimas Corp elsewhere on the record
Companies that share a holder
- PZENA INVESTMENT MANAGEMENT LLC also filed stake reports on 37 other companies: ADVANCE AUTO PARTS INC (Oct 2026), Globant S.A. (Oct 2026), Koppers Holdings Inc. (Oct 2026)
- Allspring Global Investments Holdings, LLC also filed stake reports on 49 other companies: abrdn Emerging Markets ex Chin (Oct 2026), AMC Global Media Inc (Oct 2026), EverQuote Inc (Oct 2026)
- BANK OF AMERICA CORP /DE/ also filed stake reports on 74 other companies: PIMCO CALIFORNIA MUNICIPAL INCOME FUND (Nov 2026), PIMCO MUNICIPAL INCOME FUND II (Nov 2026), PIMCO NEW YORK MUNICIPAL INCOME FUND II (Nov 2026)
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What the Full Report on Trimas Corp covers
The Short Answer
Which Company This Is
What They Do, And How The Money Works
Who Runs It, And How To Reach Them
The Money: Funding, Valuation, Runway
Who Pays Them, And Who They Are Up Against
Warning Bells
Sources
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| Trend International Holding AG | 0 | 4,170,667 | 0 | 4,170,667 | SCHEDULE 13D/A, 2026-06-08 |
| Shawn Sedaghat | 7,633 | 6,054,425 | 7,633 | 6,054,425 | SCHEDULE 13D/A, 2026-06-08 |
| Allspring Global Investments Holdings, LLC | 1,418,525 | 0 | 1,419,484 | 0 | SCHEDULE 13G/A, 2026-10-07 |
| Bank Of America Corp | 0 | 166,665 | 0 | 81,295 | SCHEDULE 13G/A, 2026-11-06 |
| The Vanguard Group | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-03-27 |
| Capital International Investors | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-02-13 |
The latest filing identifies Trimas Corp by CUSIP 896215209 and gives its principal executive office as 38505 WOODWARD AVENUE, SUITE 200, BLOOMFIELD HILLS, MI 48304 (SCHEDULE 13G/A, 2026-11-06).
Source of funds (Item 3)
As further explained in Item 6, the 2,853 shares of Common Stock underlying restricted stock units ("RSUs") reported herein are directly held by Mr. Sedaghat and were issued in consideration for his service on the Board.Trend International Holding AG, SCHEDULE 13D/A, 2026-06-08
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-07-16 | BlackRock, Inc. | 6.2% | SCHEDULE 13G/A |
| 2025-07-29 | The Vanguard Group | 9.14% | SCHEDULE 13G/A |
| 2025-08-13 | Bank Of America Corp | 9.2% | SCHEDULE 13G/A |
| 2025-10-10 | Allspring Global Investments Holdings, LLC | 6.1% | SCHEDULE 13G/A |
| 2025-10-14 | Pzena Investment Management LLC | 3.2% | SCHEDULE 13G/A |
| 2025-11-13 | Capital International Investors | 7.1% | SCHEDULE 13G |
| 2026-02-11 | Bank Of America Corp | 10.2% | SCHEDULE 13G/A |
| 2026-02-13 | Capital International Investors | 0% | SCHEDULE 13G/A |
| 2026-03-27 | The Vanguard Group | 0% | SCHEDULE 13G/A |
| 2026-06-08 | Trend International Holding AG | 16.9% | SCHEDULE 13D/A |
| 2026-10-07 | Allspring Global Investments Holdings, LLC | 4% | SCHEDULE 13G/A |
| 2026-11-06 | Bank Of America Corp | 0.5% | SCHEDULE 13G/A |
Questions about who owns Trimas Corp
Who owns Trimas Corp?
On this page, 2 holders' latest ownership filings report 5% or more of Trimas Corp: Trend International Holding AG (16.9%, Schedule 13D/A, filed 2026-06-08) and BlackRock, Inc. (6.2%, Schedule 13G/A, filed 2025-07-16).
Who are the largest shareholders of Trimas Corp?
By the share each holder's latest filing reports, the largest holders of Trimas Corp on this page are Trend International Holding AG (16.9%) and BlackRock, Inc. (6.2%).
When did Trend International Holding AG buy into Trimas Corp?
The filings give report dates, not purchase dates. The earliest filing from Trend International Holding AG on this page is the Schedule 13D/A, filed 2026-06-08, reporting 16.9%. That earliest filing is itself an amendment, which updates an earlier report.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 12 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.