TriMas Corporation
US ˙ NasdaqGS ˙ US8962152091

SecurityTRS / TriMas Corporation
InstitutionBlackRock, Inc.
Latest Disclosed Ownership2,537,285 shares
Ownership 6.20%
BlackRock, Inc. ownership in TRS / TriMas Corporation

2025-07-16 - BlackRock, Inc. has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 2,537,285 shares of TriMas Corporation (US:TRS). This represents 6.2 percent ownership of the company. In their previous filing dated 2024-01-26 , BlackRock, Inc. had reported owning 3,133,874 shares, indicating a decrease of -19.04 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date		Effective
Date		Form Prev
Shares		 Latest
Shares		 ΔShares
(Percent)		 Ownership
(Percent)		 ΔOwnership
(Percent)
2025-07-16 2025-07-16 13G/A 3,133,874 2,537,285 -19.04 6.20 -18.42
2024-01-26 2024-01-26 13G/A 2,912,445 3,133,874 7.60 7.60 10.14
2023-02-01 2023-02-01 13G/A 3,064,098 2,912,445 -4.95 6.90 -2.82
2022-02-01 2022-02-01 13G/A 3,080,910 3,064,098 -0.55 7.10 0.00
2021-02-01 2021-02-01 13G/A 3,274,954 3,080,910 -5.93 7.10 -2.74
2020-02-06 2020-02-06 13G/A 3,217,701 3,274,954 1.78 7.30 4.29
2019-02-06 2019-02-06 13G/A 2,907,675 3,217,701 10.66 7.00 9.37
2018-01-23 2018-01-23 13G/A 2,801,048 2,907,675 3.81 6.40 3.23
2017-01-27 2017-01-27 13G/A 2,801,048 2,801,048 0.00 6.20 0.00
2017-01-26 2017-01-26 13G/A 2,399,560 2,801,048 16.73 6.20 16.98
2016-01-27 2016-01-27 13G/A 2,399,560 5.30
2015-02-02 2015-02-02 13G/A 2,450,556 5.40
2014-01-30 2014-01-30 13G 2,667,934 5.90

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

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)
2026-05-13 2026-03-31 13F TRIMAS COM NEW 896215209 2,497,043 99,761 4.16 89,744 5.60 0.0001
2026-02-12 2025-12-31 13F TRIMAS COM NEW 896215209 2,397,282 -108,007 -4.31 84,984 -12.21 0.0014
2025-11-12 2025-09-30 13F TRIMAS COM NEW 896215209 2,505,289 -104,466 -4.00 96,804 29.65 0.0017
2025-08-12 2025-06-30 13F TRIMAS COM NEW 896215209 2,609,755 -420,410 -13.87 74,665 5.17 0.0014
2025-05-02 2025-03-31 13F TRIMAS COM NEW 896215209 3,030,165 -10,486 -0.34 70,997 -5.05 0.0015
2025-02-07 2024-12-31 13F TRIMAS COM NEW 896215209 3,040,651 3,527 0.12 74,770 -3.57 0.0015
2024-11-13 2024-09-30 13F TRIMAS COM NEW 896215209 3,037,124 -95,436 -3.05 77,538 -3.16 0.0016
2024-08-13 2024-06-30 13F TRIMAS COM NEW 896215209 3,132,560 -27,274 -0.86 80,068 -5.20 0.0018
2024-05-10 2024-03-31 13F TRIMAS COM NEW 896215209 3,159,834 24,739 0.79 84,462 6.36 0.0020
2024-02-13 2023-12-31 13F TRIMAS COM NEW 896215209 3,135,095 228,260 7.85 79,412 10.33 0.0020
2023-11-13 2023-09-30 13F TRIMAS COM NEW 896215209 2,906,835 -2,446 -0.08 71,973 -10.01 0.0021
2023-08-11 2023-06-30 13F TRIMAS COM NEW 896215209 2,909,281 12,142 0.42 79,976 -0.91 0.0022
2023-05-12 2023-03-31 13F TRIMAS COM NEW 896215209 2,897,139 -16,920 -0.58 80,714 -0.15 0.0024
2023-02-13 2022-12-31 13F TRIMAS COM NEW 896215209 2,914,059 54,317 1.90 80,836 12.75 0.0025
2022-11-14 2022-09-30 13F TRIMAS COM NEW 896215209 2,859,742 -42,438 -1.46 71,692 -10.79 0.0024
2022-08-12 2022-06-30 13F TRIMAS COM NEW 896215209 2,902,180 -81,150 -2.72 80,361 -16.06 0.0026
2022-05-12 2022-03-31 13F TRIMAS COM NEW 896215209 2,983,330 -80,768 -2.64 95,735 -15.56 0.0026
2022-02-10 2021-12-31 13F TRIMAS COM NEW 896215209 3,064,098 15,305 0.50 113,373 14.91 0.0029
2021-11-09 2021-09-30 13F TRIMAS COM NEW 896215209 3,048,793 -63,889 -2.05 98,659 4.50 0.0028
2021-08-11 2021-06-30 13F TRIMAS COM NEW 896215209 3,112,682 -123,957 -3.83 94,407 -3.80 0.0026
2021-05-07 2021-03-31 13F TRIMAS COM NEW 896215209 3,236,639 155,729 5.05 98,134 0.57 0.0029
2021-02-05 2020-12-31 13F TRIMAS COM NEW 896215209 3,080,910 90,707 3.03 97,574 43.12 0.0031
2020-11-06 2020-09-30 13F TRIMAS COM NEW 896215209 2,990,203 -117,218 -3.77 68,176 -8.39 0.0025
2020-08-14 2020-06-30 13F TRIMAS COM NEW 896215209 3,107,421 -115,844 -3.59 74,423 -0.04 0.0030
2020-05-01 2020-03-31 13F TRIMAS COM NEW 896215209 3,223,265 -51,689 -1.58 74,456 -27.62 0.0036
2020-02-13 2019-12-31 13F TRIMAS COM NEW 896215209 3,274,954 -177,606 -5.14 102,866 -2.79 0.0039
2019-11-08 2019-09-30 13F TRIMAS COM NEW 896215209 3,452,560 30,601 0.89 105,822 -0.15 0.0044
2019-08-22 2019-06-30 13F/A-1 TRIMAS COM NEW 896215209 3,421,959 58,807 1.75 105,978 4.24 0.0045
2019-08-13 2019-06-30 13F TRIMAS COM NEW 896215209 3,421,959 58,807 105,978
2019-05-09 2019-03-31 13F TRIMAS COM NEW 896215209 3,363,152 145,451 4.52 101,668 15.78 0.0045
2019-02-08 2018-12-31 13F TRIMAS COM NEW 896215209 3,217,701 81,685 2.60 87,810 -7.89 0.0044
2018-11-09 2018-09-30 13F TRIMAS COM NEW 896215209 3,136,016 116,897 3.87 95,335 7.41 0.0041
2018-08-09 2018-06-30 13F TRIMAS COM NEW 896215209 3,019,119 124,442 4.30 88,761 16.81 0.0041
2018-05-09 2018-03-31 13F TRIMAS COM NEW 896215209 2,894,677 -12,998 -0.45 75,986 -2.31 0.0036
2018-02-09 2017-12-31 13F TRIMAS COM NEW 896215209 2,907,675 157 0.01 77,780 -0.92 0.0037
2017-11-14 2017-09-30 13F TRIMAS COM NEW 896215209 2,907,518 115,141 4.12 78,503 34.84 0.0040
2017-08-10 2017-06-30 13F TRIMAS COM NEW 896215209 2,792,377 6,089 0.22 58,221 0.70 0.0031
2017-05-12 2017-03-31 13F TRIMAS COM NEW 896215209 2,786,288 2,774,865 24,291.91 57,816 21,392.94 0.0032
2017-02-10 2016-12-31 13F TRIMAS COM NEW 896215209 11,423 -1,108 -8.84 269 15.45 0.0004
2016-11-08 2016-09-30 13F TRIMAS COM NEW 896215209 12,531 368 3.03 233 5.91 0.0003
2016-08-10 2016-06-30 13F TRIMAS COM NEW 896215209 12,163 8,940 277.38 220 292.86 0.0003
2016-05-10 2016-03-31 13F TRIMAS COM NEW 896215209 3,223 1,714 113.59 56 100.00 0.0001
2016-02-11 2015-12-31 13F TRIMAS COM NEW 896215209 1,509 295 24.30 28 40.00 0.0000
2015-11-13 2015-09-30 13F TRIMAS COM NEW 896215209 1,214 0 0.00 20 -44.44 0.0000
2015-08-07 2015-06-30 13F TRIMAS COM NEW 896215209 1,214 -50 -3.96 36 -7.69 0.0001
2015-05-13 2015-03-31 13F TRIMAS COM NEW 896215209 1,264 0 0.00 39 -2.50 0.0001
2015-02-09 2014-12-31 13F TRIMAS COM NEW 896215209 1,264 0 0.00 40 29.03 0.0001
2014-10-29 2014-09-30 13F TRIMAS COM NEW 896215209 1,264 0 0.00 31 -36.73 0.0000
2014-08-06 2014-06-30 13F TRIMAS COM NEW 896215209 1,264 264 26.40 49 48.48 0.0001
2014-05-02 2014-03-31 13F TRIMAS COM NEW 896215209 1,000 0 0.00 33 -17.50 0.0001
2014-02-12 2013-12-31 13F TRIMAS COM NEW 896215209 1,000 0 0.00 40 8.11 0.0001
2013-11-12 2013-09-30 13F TRIMAS COM NEW 896215209 1,000 0 0.00 37 0.00 0.0001
2013-08-13 2013-06-30 13F TRIMAS COM NEW 896215209 1,000 1,000 37 0.0001
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.