TriMas Corporation
US ˙ NasdaqGS ˙ US8962152091

SecurityTRS / TriMas Corporation
InstitutionFirst Manhattan Co
Latest Disclosed Ownership2,058,285 shares
Ownership 4.50%
First Manhattan Co ownership in TRS / TriMas Corporation

2018-02-09 - First Manhattan Co has filed an SC 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 2,058,285 shares of TriMas Corporation (US:TRS). This represents 4.5 percent ownership of the company. In their previous filing dated 2017-02-10 , First Manhattan Co had reported owning 2,392,961 shares, indicating a decrease of -13.99 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)
2018-02-09 2018-02-09 13G/A 2,392,961 2,058,285 -13.99 4.50 -14.45
2017-02-10 2017-02-10 13G/A 2,267,976 2,392,961 5.51 5.26 5.20
2016-02-12 2016-02-12 13G 2,267,976 5.00
2013-02-15 2013-02-15 13G/A 1,715,918 4.36
2012-02-14 2012-02-14 13G/A 1,826,470 5.20

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)
2026-05-15 2026-03-31 13F TRIMAS COM NEW 896215209 340,970 -1,100 -0.32 12,254 1.06 0.0340
2026-02-17 2025-12-31 13F TRIMAS COM NEW 896215209 342,070 -13,600 -3.82 12,126 -11.77 0.0318
2025-11-14 2025-09-30 13F TRIMAS COM NEW 896215209 355,670 -6,417 -1.77 13,743 32.67 0.0363
2025-08-14 2025-06-30 13F TRIMAS COM NEW 896215209 362,087 -3,550 -0.97 10,359 20.93 0.0292
2025-05-15 2025-03-31 13F TRIMAS COM NEW 896215209 365,637 2,100 0.58 8,567 -4.17 0.0250
2025-02-14 2024-12-31 13F TRIMAS COM NEW 896215209 363,537 -18,970 -4.96 8,939 -8.46 0.0262
2024-11-14 2024-09-30 13F TRIMAS COM NEW 896215209 382,507 36,450 10.53 9,765 10.40 0.0290
2024-08-15 2024-06-30 13F/A-1 TRIMAS COM NEW 896215209 346,057 -1,425 -0.41 8,845 -4.77 0.0284
2024-08-14 2024-06-30 13F TRIMAS COM NEW 896215209 346,057 -1,425 8,845 0.0284
2024-05-15 2024-03-31 13F TRIMAS COM NEW 896215209 347,482 17,787 5.39 9,288 11.22 0.0301
2024-02-13 2023-12-31 13F TRIMAS COM NEW 896215209 329,695 -1,035 -0.31 8,351 1.99 0.0290
2023-11-14 2023-09-30 13F TRIMAS COM NEW 896215209 330,730 -17,700 -5.08 8,189 -14.51 0.0302
2023-08-14 2023-06-30 13F TRIMAS COM NEW 896215209 348,430 -50,000 -12.55 9,578 -13.71 0.0351
2023-05-15 2023-03-31 13F TRIMAS COM NEW 896215209 398,430 -233,987 -37.00 11,100 -36.73 0.0426
2023-02-14 2022-12-31 13F TRIMAS COM NEW 896215209 632,417 -154,332 -19.62 17,543 -11.05 0.0643
2022-11-14 2022-09-30 13F TRIMAS COM NEW 896215209 786,749 -8,195 -1.03 19,723 -10.39 0.0835
2022-08-15 2022-06-30 13F TRIMAS COM NEW 896215209 794,944 -13,115 -1.62 22,011 -15.11 0.0887
2022-05-16 2022-03-31 13F TRIMAS COM NEW 896215209 808,059 -25,898 -3.11 25,930 -15.96 0.0848
2022-02-14 2021-12-31 13F TRIMAS COM NEW 896215209 833,957 3,098 0.37 30,856 14.77 0.1017
2021-11-15 2021-09-30 13F TRIMAS COM NEW 896215209 830,859 110,944 15.41 26,886 23.13 0.0990
2021-08-16 2021-06-30 13F TRIMAS COM NEW 896215209 719,915 -2,945 -0.41 21,835 -0.37 0.0797
2021-05-14 2021-03-31 13F TRIMAS COM NEW 896215209 722,860 -16,950 -2.29 21,917 -6.45 0.0945
2021-02-16 2020-12-31 13F TRIMAS COM NEW 896215209 739,810 -20,163 -2.65 23,429 35.22 0.1121
2020-11-12 2020-09-30 13F TRIMAS COMMON 896215209 759,973 6,990 0.93 17,327 -3.92 0.0893
2020-08-14 2020-06-30 13F TRIMAS COMMON 896215209 752,983 -63,312 -7.76 18,033 -4.36 0.1042
2020-05-06 2020-03-31 13F TRIMAS COMMON 896215209 816,295 -42,650 -4.97 18,856 -30.11 0.1222
2020-02-13 2019-12-31 13F TRIMAS COMMON 896215209 858,945 -142,834 -14.26 26,979 -12.13 0.1354
2019-11-13 2019-09-30 13F TRIMAS COMMON 896215209 1,001,779 -43,290 -4.14 30,704 -5.13 0.1691
2019-08-16 2019-06-30 13F TRIMAS COMMON 896215209 1,045,069 -73,483 -6.57 32,365 -4.28 0.1797
2019-04-12 2019-03-31 13F TRIMAS COMMON 896215209 1,118,552 -180,412 -13.89 33,813 -4.61 0.1952
2019-01-30 2018-12-31 13F TRIMAS COMMON 896215209 1,298,964 -78,635 -5.71 35,448 -15.36 0.2207
2018-10-15 2018-09-30 13F TRIMAS COMMON 896215209 1,377,599 -27,540 -1.96 41,879 1.37 0.2232
2018-08-01 2018-06-30 13F TRIMAS COMMON 896215209 1,405,139 -279,971 -16.61 41,311 -6.61 0.2382
2018-04-20 2018-03-31 13F TRIMAS COMMON 896215209 1,685,110 -323,805 -16.12 44,234 -17.69 0.2517
2018-01-22 2017-12-31 13F TRIMAS COMMON 896215209 2,008,915 -164,574 -7.57 53,738 -8.43 0.2944
2017-10-25 2017-09-30 13F TRIMAS COMMON 896215209 2,173,489 -24,947 -1.13 58,684 28.03 0.3361
2017-08-10 2017-06-30 13F/A-2 TRIMAS COMMON 896215209 2,198,436 -49,815 -2.22 45,837 -1.74 0.2673
2017-08-01 2017-06-30 13F/A-1 TRIMAS COMMON 896215209 2,198,436 0 45,837 0.2673
2017-07-28 2017-06-30 13F TRIMAS COMMON 896215209 2,204,106 -44,145 45,955
2017-04-25 2017-03-31 13F/A-1 TRIMAS COMMON 896215209 2,248,251 -29,985 -1.32 46,651 -12.86 0.2771
2017-04-24 2017-03-31 13F TRIMAS COMMON 896215209 2,374,691 44,192
2017-01-25 2016-12-31 13F TRIMAS COMMON 896215209 2,278,236 -96,455 -4.06 53,538 21.15 0.3256
2016-10-20 2016-09-30 13F TRIMAS COMMON 896215209 2,374,691 15,850 0.67 44,192 4.08 0.2695
2016-07-14 2016-06-30 13F TRIMAS COMMON 896215209 2,358,841 136,200 6.13 42,459 9.04 0.2608
2016-04-22 2016-03-31 13F TRIMAS COMMON 896215209 2,222,641 36,365 1.66 38,940 -4.50 0.2396
2016-01-20 2015-12-31 13F TRIMAS COMMON 896215209 2,186,276 62,201 2.93 40,774 17.41 0.2502
2015-10-26 2015-09-30 13F TRIMAS COMMON 896215209 2,124,075 458,695 27.54 34,728 -29.55 0.2232
2015-07-17 2015-06-30 13F TRIMAS COMMON 896215209 1,665,380 20,825 1.27 49,295 -2.65 0.2911
2015-04-30 2015-03-31 13F TRIMAS COMMON 896215209 1,644,555 120,340 7.90 50,635 6.17 0.2917
2015-01-20 2014-12-31 13F TRIMAS COMMON 896215209 1,524,215 5,550 0.37 47,692 29.08 0.2700
2014-10-23 2014-09-30 13F TRIMAS COMMON 896215209 1,518,665 61,510 4.22 36,949 -33.50 0.2149
2014-08-14 2014-06-30 13F/A-1 TRIMAS COMMON 896215209 1,457,155 3,215 0.22 55,561 15.10 0.3521
2014-05-16 2014-03-31 13F TRIMAS COMMON 896215209 1,453,940 21,442 1.50 48,270 -15.53 0.3180
2014-02-04 2013-12-31 13F TRIMAS COMMON 896215209 1,432,498 -74,969 -4.97 57,142 1.60 0.3777
2013-10-29 2013-09-30 13F TRIMAS COMMON 896215209 1,507,467 -17,824 -1.17 56,243 -0.23 0.3928
2013-08-13 2013-06-30 13F TRIMAS COMMON 896215209 1,525,291 1,525,291 56,374 0.3878
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.