TriMas Corporation
TriMas Corporation (TRS) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · TRS · as of Sep 30, 2024
Ownership Breakdown
152
Institutional Holders
▼ 8 vs Q2
$991.67M
Total Inst. Value
▼ $10.36M vs Q2
35.83M
Shares Outstanding
freeFloat 80.33%
38.82M
13F Shares Held
▼ 387,228 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
TRS largest shareholders · institutional ownership
Q3 2024 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC metal forgings & stampings | 3.81M | 9.39% | 9.39% | $97.37B | Nov 13, 2024 | ▼ 390.5K |
FIDUCIARY MANAGEMENT INC /WI/ metal forgings & stampings | 3.19M | 7.85% | 7.85% | $81.43B | Nov 14, 2024 | ▼ 4.3K |
ALLSPRING GLOBAL INVESTMENTS HOLDINGS, LLC metal forgings & stampings | 3.15M | 7.74% | 7.74% | $80.30B | Oct 18, 2024 | ▲ 51.7K |
BLACKROCK, INC. metal forgings & stampings | 3.04M | 7.48% | 7.48% | $77.54B | Nov 13, 2024 | NEW |
WELLINGTON MANAGEMENT GROUP LLP metal forgings & stampings | 2.62M | 6.45% | 6.45% | $66.87B | Nov 14, 2024 | ▲ 252.5K |
DIMENSIONAL FUND ADVISORS LP metal forgings & stampings | 2.58M | 6.35% | 6.35% | $65.80B | Nov 7, 2024 | ▲ 46.5K |
PZENA INVESTMENT MANAGEMENT LLC metal forgings & stampings | 2.14M | 5.28% | 5.28% | $54.70B | Nov 8, 2024 | ▼ 118.0K |
BANK OF AMERICA CORP /DE/ metal forgings & stampings | 1.55M | 3.81% | 3.81% | $39.47B | Nov 14, 2024 | ▲ 1.06M |
RIVER ROAD ASSET MANAGEMENT, LLC metal forgings & stampings | 1.46M | 3.58% | 3.58% | $37.15B | Oct 30, 2024 | ▼ 16.0K |
CHAMPLAIN INVESTMENT PARTNERS, LLC metal forgings & stampings | 1.13M | 2.78% | 2.78% | $28.86B | Nov 12, 2024 | ▼ 780.5K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2024 vs prior quarter
Q3 2024
21
Increased
+2.35M shares3
New Positions
first time holders26
Decreased
−1.91M shares0
Sold Out
fully exitedNet shares change (top 50)
+433.2K
+2.35M / −1.91M
Net new holders
-2
3 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
TRS insider trading · insider activity
Source: SEC Form 4
Insiders have been net buyers of shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
2
Buy transactions
2
Sell transactions
1.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Tredwell Daniel P director | May 13, 2026 | Purchase | 62.142 | $40.58 | $2.5K | 63.5K | Form 4 ↗ |
Robin Jodi F. General Counsel and Secretary | May 5, 2026 | Sale | 3,000 | $41.09 | $123.3K | 36.2K | Form 4 ↗ |
Robin Jodi F. General Counsel and Secretary | May 7, 2026 | Sale | 2,000 | $41.60 | $83.2K | 34.2K | Form 4 ↗ |
SEDAGHAT SHAWN
| Apr 14, 2026 | Award | 640 | $39.03 | $25.0K | 4.18M | Form 4 ↗ |
Finley Teresa director | Mar 20, 2026 | Tax Withhold | 6,192 | $34.04 | $210.8K | 75.2K | Form 4 ↗ |
SEDAGHAT SHAWN
| Mar 14, 2026 | Award | 2,853 | — | — | 4.18M | Form 4 ↗ |
Swart Paul Chief Financial Officer | Mar 14, 2026 | Award | 6,849 | — | — | 14.9K | Form 4 ↗ |
Robin Jodi F. General Counsel and Secretary | Mar 14, 2026 | Award | 5,422 | — | — | 41.6K | Form 4 ↗ |
Robin Jodi F. General Counsel and Secretary | Mar 14, 2026 | Tax Withhold | 2,388 | $35.04 | $83.7K | 39.2K | Form 4 ↗ |
Stress Jill S. Chief Human Resources Officer | Mar 14, 2026 | Tax Withhold | 1,999 | $35.04 | $70.0K | 24.0K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
TriMas Corporation (TRS) is primarily owned by institutional investors, who hold approximately 100.0% of total shares outstanding. Company insiders own approximately 19.67%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of TriMas Corporation is VANGUARD GROUP INC, holding approximately 3.81 million shares — equal to 9.39% of outstanding shares — as of September 30, 2024.
A total of 152 institutional investors currently hold TRS stock, with a combined institutional value of approximately $991,672,319 as of the most recent 13F filing period.
Frequently asked questions
TRS ownershipTriMas Corporation (TRS) is primarily owned by institutional investors, who hold approximately 100.0% of shares. The largest shareholder is VANGUARD GROUP INC with a 9.39% stake. Company insiders hold 19.67%. Data sourced from SEC Form 13F as of September 30, 2024.