TriMas Corporation
US ˙ NasdaqGS ˙ US8962152091

SecurityTRS / TriMas Corporation
InstitutionCitigroup Inc
Latest Disclosed Ownership3,660 shares
Latest Disclosed Value $ 131,540
Citigroup Inc reports 52.33% decrease in ownership of TRS / TriMas Corporation

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 3,660 shares of TriMas Corporation (US:TRS) valued at $131,540 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 7,677 shares of TriMas Corporation. This represents a change in shares of -52.33% during the quarter. The current value of the position is $143,362 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)
2026-05-11 2026-03-31 13F TRIMAS COM NEW 896215209 3,660 -4,017 -52.33 132 -51.84 0.0000
2026-02-13 2025-12-31 13F TRIMAS COM NEW 896215209 7,677 1,558 25.46 272 15.25 0.0001
2025-11-10 2025-09-30 13F TRIMAS COM NEW 896215209 6,119 -13,890 -69.42 236 -58.74 0.0001
2025-08-11 2025-06-30 13F TRIMAS COM NEW 896215209 20,009 -14,938 -42.74 572 -30.07 0.0003
2025-05-12 2025-03-31 13F TRIMAS COM NEW 896215209 34,947 -263 -0.75 819 -5.43 0.0004
2025-02-12 2024-12-31 13F TRIMAS COM NEW 896215209 35,210 3,951 12.64 866 8.40 0.0005
2024-11-12 2024-09-30 13F TRIMAS COM NEW 896215209 31,259 20,747 197.36 798 197.76 0.0005
2024-08-12 2024-06-30 13F TRIMAS COM NEW 896215209 10,512 1,625 18.29 269 13.08 0.0002
2024-05-10 2024-03-31 13F TRIMAS COM NEW 896215209 8,887 -11,143 -55.63 238 -53.25 0.0002
2024-02-09 2023-12-31 13F TRIMAS COM NEW 896215209 20,030 19,602 4,579.91 507 4,970.00 0.0004
2023-12-06 2023-09-30 13F/A-1 TRIMAS COM NEW 896215209 428 -13,013 -96.82 11 -97.29 0.0000
2023-11-09 2023-09-30 13F TRIMAS COM NEW 896215209 428 -13,013 11 0.0000
2023-08-10 2023-06-30 13F TRIMAS COM NEW 896215209 13,441 7,197 115.26 369 113.29 0.0002
2023-05-11 2023-03-31 13F TRIMAS COM NEW 896215209 6,244 4,915 369.83 174 380.56 0.0001
2023-02-09 2022-12-31 13F TRIMAS COM NEW 896215209 1,329 -478 -26.45 37 -20.00 0.0000
2022-11-10 2022-09-30 13F TRIMAS COM NEW 896215209 1,807 -2,482 -57.87 45 -61.86 0.0000
2022-08-10 2022-06-30 13F TRIMAS COM NEW 896215209 4,289 1,043 32.13 118 12.38 0.0001
2022-05-12 2022-03-31 13F TRIMAS COM NEW 896215209 3,246 -8,680 -72.78 105 -76.19 0.0001
2022-02-10 2021-12-31 13F TRIMAS COM NEW 896215209 11,926 6,200 108.28 441 138.38 0.0002
2021-11-10 2021-09-30 13F TRIMAS COM NEW 896215209 5,726 2,860 99.79 185 112.64 0.0001
2021-08-10 2021-06-30 13F TRIMAS COM NEW 896215209 2,866 -322 -10.10 87 -10.31 0.0001
2021-05-13 2021-03-31 13F TRIMAS COM NEW 896215209 3,188 -5,285 -62.37 97 -63.81 0.0001
2021-02-11 2020-12-31 13F TRIMAS COM NEW 896215209 8,473 5,925 232.54 268 362.07 0.0002
2020-11-12 2020-09-30 13F TRIMAS COM NEW 896215209 2,548 -12,315 -82.86 58 -83.71 0.0000
2020-08-12 2020-06-30 13F TRIMAS COM NEW 896215209 14,863 1,135 8.27 356 12.30 0.0003
2020-05-12 2020-03-31 13F TRIMAS COM NEW 896215209 13,728 1,204 9.61 317 -19.34 0.0003
2020-02-12 2019-12-31 13F TRIMAS COM NEW 896215209 12,524 -9,976 -44.34 393 -43.04 0.0003
2019-11-08 2019-09-30 13F TRIMAS COM NEW 896215209 22,500 1,620 7.76 690 6.65 0.0005
2019-08-12 2019-06-30 13F TRIMAS COM NEW 896215209 20,880 5,514 35.88 647 39.14 0.0005
2019-05-13 2019-03-31 13F TRIMAS COM NEW 896215209 15,366 6 0.04 465 10.98 0.0004
2019-02-12 2018-12-31 13F TRIMAS COM NEW 896215209 15,360 2,169 16.44 419 4.49 0.0004
2018-11-13 2018-09-30 13F TRIMAS COM NEW 896215209 13,191 2,394 22.17 401 26.50 0.0004
2018-08-10 2018-06-30 13F TRIMAS COM NEW 896215209 10,797 -2,479 -18.67 317 -8.91 0.0003
2018-05-11 2018-03-31 13F TRIMAS COM NEW 896215209 13,276 -1,110 -7.72 348 -9.37 0.0003
2018-02-12 2017-12-31 13F TRIMAS COM NEW 896215209 14,386 13,437 1,415.91 384 1,376.92 0.0003
2017-11-13 2017-09-30 13F TRIMAS COM NEW 896215209 949 -5,917 -86.18 26 -81.82 0.0000
2017-08-11 2017-06-30 13F TRIMAS COM NEW 896215209 6,866 -7,263 -51.40 143 -51.19 0.0001
2017-05-12 2017-03-31 13F TRIMAS COM NEW 896215209 14,129 -43,231 -75.37 293 -78.26 0.0003
2017-02-10 2016-12-31 13F TRIMAS COM NEW 896215209 57,360 53,171 1,269.30 1,348 1,628.21 0.0012
2016-11-10 2016-09-30 13F TRIMAS COM NEW 896215209 4,189 -12,568 -75.00 78 -74.17 0.0001
2016-08-12 2016-06-30 13F TRIMAS COM NEW 896215209 16,757 -28,968 -63.35 302 -62.30 0.0003
2016-05-13 2016-03-31 13F TRIMAS COM NEW 896215209 45,725 27,630 152.69 801 137.69 0.0009
2016-02-12 2015-12-31 13F TRIMAS COM NEW 896215209 18,095 14,263 372.21 337 434.92 0.0003
2015-11-13 2015-09-30 13F TRIMAS COM NEW 896215209 3,832 -2,694 -41.28 63 -67.36 0.0001
2015-08-13 2015-06-30 13F TRIMAS COM NEW 896215209 6,526 -11,491 -63.78 193 -65.16 0.0002
2015-05-14 2015-03-31 13F TRIMAS COM NEW 896215209 18,017 -7,191 -28.53 554 -29.78 0.0005
2015-02-17 2014-12-31 13F TRIMAS COM NEW 896215209 25,208 21,185 526.60 789 713.40 0.0007
2014-11-14 2014-09-30 13F TRIMAS COM NEW 896215209 4,023 3,231 407.95 97 234.48 0.0001
2014-08-14 2014-06-30 13F TRIMAS COM NEW 896215209 792 -15,946 -95.27 29 -94.78 0.0000
2014-05-15 2014-03-31 13F TRIMAS COM NEW 896215209 16,738 -4,404 -20.83 556 -34.12 0.0006
2014-02-14 2013-12-31 13F TRIMAS COM NEW 896215209 21,142 15,132 251.78 844 276.79 0.0008
2013-11-14 2013-09-30 13F TRIMAS COM NEW 896215209 6,010 814 15.67 224 15.46 0.0002
2013-08-14 2013-06-30 13F TRIMAS COM NEW 896215209 5,196 5,196 194 0.0002
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.