TriMas Corporation
US ˙ NasdaqGS ˙ US8962152091

SecurityTRS / TriMas Corporation
InstitutionMorgan Stanley
Latest Disclosed Ownership1,491,112 shares
Latest Disclosed Value $ 53,590,604
Morgan Stanley reports 85.59% increase in ownership of TRS / TriMas Corporation

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 1,491,112 shares of TriMas Corporation (US:TRS) valued at $53,590,565 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 803,428 shares of TriMas Corporation. This represents a change in shares of 85.59% during the quarter. The current value of the position is $58,429,224 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)
2026-05-15 2026-03-31 13F TRIMAS COM NEW 896215209 1,491,112 687,684 85.59 53,591 88.16 0.0032
2026-05-27 2025-12-31 13F/A-1 TRIMAS COM NEW 896215209 803,428 569,083 242.84 28,482 214.53 0.0017
2026-02-13 2025-12-31 13F TRIMAS COM NEW 896215209 803,428 569,083 28,482 0.0017
2026-05-27 2025-09-30 13F/A-1 TRIMAS COM NEW 896215209 234,345 -62,637 -21.09 9,055 6.58 0.0005
2025-11-14 2025-09-30 13F TRIMAS COM NEW 896215209 234,345 -62,637 9,055 0.0005
2025-08-15 2025-06-30 13F TRIMAS COM NEW 896215209 296,982 98,894 49.92 8,497 83.06 0.0006
2025-05-15 2025-03-31 13F TRIMAS COM NEW 896215209 198,088 -67,485 -25.41 4,641 -28.93 0.0003
2025-05-15 2024-12-31 13F/A-1 TRIMAS COM NEW 896215209 265,573 -54,876 -17.12 6,530 -20.18 0.0005
2025-02-14 2024-12-31 13F TRIMAS COM NEW 896215209 265,573 -54,876 6,530 0.0005
2025-05-14 2024-09-30 13F/A-2 TRIMAS COM NEW 896215209 320,449 31,512 10.91 8,181 10.78 0.0006
2025-02-14 2024-09-30 13F/A-1 TRIMAS COM NEW 896215209 320,449 31,512 8,181 0.0006
2024-11-14 2024-09-30 13F TRIMAS COM NEW 896215209 320,449 31,512 8,181 0.0001
2025-05-14 2024-06-30 13F/A-2 TRIMAS COM NEW 896215209 288,937 -50,584 -14.90 7,385 -18.62 0.0006
2024-10-17 2024-06-30 13F/A-1 TRIMAS COM NEW 896215209 288,937 -50,584 7,385 0.0006
2024-08-14 2024-06-30 13F TRIMAS COM NEW 896215209 288,937 -50,584 7,385 0.0006
2024-10-17 2024-03-31 13F/A-2 TRIMAS COM NEW 896215209 339,521 46,067 15.70 9,075 22.09 0.0007
2024-08-16 2024-03-31 13F/A-1 TRIMAS COM NEW 896215209 339,521 46,067 9,075 0.0007
2024-05-15 2024-03-31 13F TRIMAS COM NEW 896215209 339,521 46,067 9,075 0.0007
2024-08-16 2023-12-31 13F/A-1 TRIMAS COM NEW 896215209 293,454 170,732 139.12 7,433 144.67 0.0007
2024-02-13 2023-12-31 13F TRIMAS COM NEW 896215209 293,454 170,732 7,433 0.0007
2023-11-15 2023-09-30 13F TRIMAS COM NEW 896215209 122,722 -46,710 -27.57 3,039 -34.76 0.0003
2023-08-14 2023-06-30 13F TRIMAS COM NEW 896215209 169,432 -13,509 -7.38 4,658 -8.61 0.0005
2023-05-15 2023-03-31 13F TRIMAS COM NEW 896215209 182,941 -22,475 -10.94 5,097 -10.57 0.0005
2023-02-14 2022-12-31 13F TRIMAS COM NEW 896215209 205,416 -18,622 -8.31 5,698 1.44 0.0006
2022-11-14 2022-09-30 13F TRIMAS COM NEW 896215209 224,038 14,965 7.16 5,617 -2.99 0.0008
2022-10-27 2022-06-30 13F/A-1 TRIMAS COM NEW 896215209 209,073 51,795 32.93 5,790 14.74 0.0008
2022-08-15 2022-06-30 13F TRIMAS COM NEW 896215209 209,073 51,795 5,790 0.0002
2022-10-27 2022-03-31 13F/A-1 TRIMAS COM NEW 896215209 157,278 56,759 56.47 5,046 35.68 0.0007
2022-05-13 2022-03-31 13F TRIMAS COM NEW 896215209 157,278 56,759 5,046 0.0007
2022-02-14 2021-12-31 13F TRIMAS COM NEW 896215209 100,519 74,268 282.91 3,719 337.53 0.0005
2021-11-15 2021-09-30 13F TRIMAS COM NEW 896215209 26,251 -52,230 -66.55 850 -64.30 0.0001
2021-08-23 2021-06-30 13F/A-1 TRIMAS COM NEW 896215209 78,481 -16,210 -17.12 2,381 -17.07 0.0003
2021-08-16 2021-06-30 13F TRIMAS COM NEW 896215209 78,481 -16,210 2,381 0.0001
2021-05-17 2021-03-31 13F TRIMAS COM NEW 896215209 94,691 54,038 132.92 2,871 123.08 0.0004
2021-02-16 2020-12-31 13F TRIMAS COM NEW 896215209 40,653 25,569 169.51 1,287 274.13 0.0002
2020-11-13 2020-09-30 13F TRIMAS COM NEW 896215209 15,084 -13,464 -47.16 344 -49.63 0.0001
2020-08-14 2020-06-30 13F TRIMAS COM NEW 896215209 28,548 -32,026 -52.87 683 -51.18 0.0002
2020-05-26 2020-03-31 13F/A-1 TRIMAS COM NEW 896215209 60,574 -12,430 -17.03 1,399 -38.99 0.0004
2020-05-15 2020-03-31 13F TRIMAS COM NEW 896215209 60,574 -12,430 1,399 107.4724
2020-02-14 2019-12-31 13F TRIMAS COM NEW 896215209 73,004 -17,715 -19.53 2,293 -17.52 0.0005
2019-11-14 2019-09-30 13F TRIMAS COM NEW 896215209 90,719 49,207 118.54 2,780 116.34 0.0007
2019-08-14 2019-06-30 13F TRIMAS COM NEW 896215209 41,512 -37,322 -47.34 1,285 -46.08 0.0003
2019-05-15 2019-03-31 13F TRIMAS COM NEW 896215209 78,834 -211,138 -72.81 2,383 -69.88 0.0007
2019-02-14 2018-12-31 13F TRIMAS COM NEW 896215209 289,972 138,735 91.73 7,912 72.04 0.0024
2019-04-23 2018-09-30 13F/A-2 TRIMAS COM NEW 896215209 151,237 38,285 33.89 4,599 38.52 0.0012
2018-11-20 2018-09-30 13F/A-1 TRIMAS COM NEW 896215209 151,237 0 4,599 0.0012
2018-11-14 2018-09-30 13F TRIMAS COM NEW 896215209 151,237 38,285 4,599
2019-04-23 2018-06-30 13F/A-1 TRIMAS COM NEW 896215209 112,952 13,438 13.50 3,320 27.11 0.0009
2018-08-14 2018-06-30 13F TRIMAS COM NEW 896215209 112,952 13,438 3,320
2019-04-23 2018-03-31 13F/A-1 TRIMAS COM NEW 896215209 99,514 -19,815 -16.61 2,612 -18.17 0.0007
2018-05-14 2018-03-31 13F TRIMAS COM NEW 896215209 99,514 -19,815 2,612
2019-04-23 2017-12-31 13F/A-1 TRIMAS COM NEW 896215209 119,329 7,752 6.95 3,192 5.98 0.0009
2018-02-14 2017-12-31 13F TRIMAS COM NEW 896215209 119,329 7,752 3,192
2017-11-14 2017-09-30 13F TRIMAS COM NEW 896215209 111,577 -15,884 -12.46 3,012 13.32 0.0009
2017-08-11 2017-06-30 13F TRIMAS COM NEW 896215209 127,461 27,627 27.67 2,658 28.28 0.0008
2017-05-22 2017-03-31 13F/A-1 TRIMAS COM NEW 896215209 99,834 -35,098 -26.01 2,072 -34.66 0.0006
2017-05-12 2017-03-31 13F TRIMAS COM NEW 896215209 99,834 2,072
2017-02-22 2016-12-31 13F/A-1 TRIMAS COM NEW 896215209 134,932 115,243 585.32 3,171 766.39 0.0010
2017-02-13 2016-12-31 13F TRIMAS COM NEW 896215209 134,932 3,171
2016-11-10 2016-09-30 13F TRIMAS COM NEW 896215209 19,689 4,827 32.48 366 36.57 0.0001
2016-08-12 2016-06-30 13F TRIMAS COM NEW 896215209 14,862 1,041 7.53 268 11.20 0.0001
2016-05-12 2016-03-31 13F TRIMAS COM NEW 896215209 13,821 -29,220 -67.89 241 -69.99 0.0001
2016-02-09 2015-12-31 13F TRIMAS COM NEW 896215209 43,041 36,392 547.33 803 643.52 0.0003
2016-02-08 2015-09-30 13F/A-1 TRIMAS COM NEW 896215209 6,649 1,063 19.03 108 -34.55 0.0000
2015-11-09 2015-09-30 13F TRIMAS COM NEW 896215209 6,649 108
2015-08-12 2015-06-30 13F TRIMAS COM NEW 896215209 5,586 -13,858 -71.27 165 -72.41 0.0001
2015-05-14 2015-03-31 13F TRIMAS COM NEW 896215209 19,444 -39,189 -66.84 598 -67.38 0.0002
2015-02-13 2014-12-31 13F TRIMAS COM NEW 896215209 58,633 -30,937 -34.54 1,833 -15.88 0.0007
2014-12-16 2014-09-30 13F/A-1 TRIMAS COM NEW 896215209 89,570 22,664 33.87 2,179 -1.94 0.0008
2014-11-14 2014-09-30 13F TRIMAS COM NEW 896215209 89,570 2,179
2014-05-13 2014-03-31 13F TRIMAS COM NEW 896215209 66,906 -105 -0.16 2,222 -16.87 0.0009
2014-02-13 2013-12-31 13F TRIMAS COM NEW 896215209 67,011 -62,307 -48.18 2,673 -44.60 0.0011
2013-11-13 2013-09-30 13F TRIMAS COM 896215209 129,318 -23,533 -15.40 4,825 -15.31 0.0023
2013-08-08 2013-06-30 13F TRIMAS COM 896215209 152,851 152,851 5,697 0.0029
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.