TriMas Corporation
US ˙ NasdaqGS ˙ US8962152091

SecurityTRS / TriMas Corporation
InstitutionSei Investments Co
Latest Disclosed Ownership170,064 shares
Latest Disclosed Value $ 6,028,772
Sei Investments Co reports 59.78% increase in ownership of TRS / TriMas Corporation

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 170,064 shares of TriMas Corporation (US:TRS) valued at $6,028,769 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 106,438 shares of TriMas Corporation. This represents a change in shares of 59.78% during the quarter. The current value of the position is $6,646,101 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-02-13 2025-12-31 13F TRIMAS COM NEW 896215209 170,064 63,626 59.78 6,029 46.60 0.0060
2025-11-13 2025-09-30 13F TRIMAS COM NEW 896215209 106,438 5,018 4.95 4,113 41.74 0.0044
2025-08-14 2025-06-30 13F TRIMAS COM NEW 896215209 101,420 19,730 24.15 2,902 51.65 0.0034
2025-05-14 2025-03-31 13F/A-1 TRIMAS COM NEW 896215209 81,690 -5,218 -6.00 1,914 -10.48 0.0025
2025-05-13 2025-03-31 13F TRIMAS COM NEW 896215209 86,908 0 2,137 0.0023
2025-02-11 2024-12-31 13F TRIMAS COM NEW 896215209 86,908 -812 -0.93 2,137 -4.56 0.0027
2024-11-12 2024-09-30 13F TRIMAS COM NEW 896215209 87,720 8,895 11.28 2,239 11.17 0.0029
2024-08-13 2024-06-30 13F TRIMAS COM NEW 896215209 78,825 13,844 21.30 2,015 16.01 0.0029
2024-05-07 2024-03-31 13F TRIMAS COM NEW 896215209 64,981 -158,374 -70.91 1,737 -69.31 0.0025
2024-02-14 2023-12-31 13F TRIMAS COM NEW 896215209 223,355 -22,294 -9.08 5,658 -6.99 0.0091
2023-11-14 2023-09-30 13F TRIMAS COM NEW 896215209 245,649 24,685 11.17 6,082 0.13 0.0109
2023-08-11 2023-06-30 13F TRIMAS COM NEW 896215209 220,964 20,060 9.98 6,074 8.52 0.0106
2023-05-12 2023-03-31 13F TRIMAS COM NEW 896215209 200,904 71,514 55.27 5,597 55.95 0.0104
2023-02-10 2022-12-31 13F TRIMAS COM NEW 896215209 129,390 -33,469 -20.55 3,589 -12.10 0.0080
2022-11-14 2022-09-30 13F TRIMAS COM NEW 896215209 162,859 6,035 3.85 4,083 -5.96 0.0091
2022-08-15 2022-06-30 13F TRIMAS COM NEW 896215209 156,824 -18,613 -10.61 4,342 -22.88 0.0094
2022-05-13 2022-03-31 13F TRIMAS COM NEW 896215209 175,437 1,704 0.98 5,630 -12.41 0.0113
2022-02-14 2021-12-31 13F TRIMAS COM NEW 896215209 173,733 8,348 5.05 6,428 20.10 0.0121
2021-11-12 2021-09-30 13F TRIMAS COM NEW 896215209 165,385 27,313 19.78 5,352 27.79 0.0112
2021-08-06 2021-06-30 13F TRIMAS COM NEW 896215209 138,072 14,982 12.17 4,188 12.22 0.0093
2021-05-12 2021-03-31 13F TRIMAS COM NEW 896215209 123,090 86,237 234.00 3,732 219.79 0.0094
2021-02-08 2020-12-31 13F TRIMAS COM NEW 896215209 36,853 36,853 1,167 0.0030
2020-05-14 2020-03-31 13F TRIMAS COM NEW 896215209 0 -7,511 -100.00 0 -100.00
2020-02-06 2019-12-31 13F TRIMAS COM NEW 896215209 7,511 7,511 257 0.0008
2019-08-14 2019-06-30 13F TRIMAS COM NEW 896215209 0 -33,634 -100.00 0 -100.00
2019-05-15 2019-03-31 13F TRIMAS COM NEW 896215209 33,634 24,340 261.89 1,027 281.78 0.0034
2019-02-13 2018-12-31 13F TRIMAS COM NEW 896215209 9,294 6,209 201.26 269 174.49 0.0010
2018-11-08 2018-09-30 13F TRIMAS COM NEW 896215209 3,085 -19,080 -86.08 98 -84.95 0.0004
2018-08-03 2018-06-30 13F TRIMAS COM NEW 896215209 22,165 5,306 31.47 651 47.29 0.0022
2018-05-11 2018-03-31 13F TRIMAS COM NEW 896215209 16,859 3,313 24.46 442 21.76 0.0017
2018-02-08 2017-12-31 13F TRIMAS COM NEW 896215209 13,546 -189 -1.38 363 -2.16 0.0013
2017-11-06 2017-09-30 13F TRIMAS COM NEW 896215209 13,735 4,459 48.07 371 92.23 0.0013
2017-07-31 2017-06-30 13F TRIMAS COM NEW 896215209 9,276 2,259 32.19 193 32.19 0.0008
2017-05-05 2017-03-31 13F TRIMAS COM NEW 896215209 7,017 -364 -4.93 146 -16.09 0.0006
2017-02-02 2016-12-31 13F TRIMAS COM NEW 896215209 7,381 346 4.92 174 32.82 0.0008
2016-11-04 2016-09-30 13F TRIMAS COM NEW 896215209 7,035 3,297 88.20 131 95.52 0.0007
2016-08-11 2016-06-30 13F TRIMAS COM NEW 896215209 3,738 2,391 177.51 67 191.30 0.0004
2016-05-10 2016-03-31 13F/A-1 TRIMAS COM NEW 896215209 1,347 332 32.71 23 21.05 0.0001
2016-02-03 2015-12-31 13F TRIMAS COM NEW 896215209 1,015 174 20.69 19 46.15 0.0001
2015-11-02 2015-09-30 13F/A-1 TRIMAS COM NEW 896215209 841 -220 -20.74 13 -58.06 0.0001
2015-10-30 2015-09-30 13F TRIMAS COM NEW 896215209 841 15
2015-08-07 2015-06-30 13F/A-1 TRIMAS COM NEW 896215209 1,061 -70 -6.19 31 -8.82 0.0003
2015-08-04 2015-06-30 13F TRIMAS COM NEW 896215209 1,061 -70 31 0.0003
2015-05-14 2015-03-31 13F/A-1 TRIMAS COM NEW 896215209 1,131 -229 -16.84 34 -20.93 0.0003
2015-05-01 2015-03-31 13F TRILLIUM THERAPEUTICS COM NEW 896215209 1,131 34
2015-02-10 2014-12-31 13F TRIMAS COM NEW 896215209 1,360 1,360 43 0.0004
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.