Dorman Products, Inc.
US ˙ NasdaqGS ˙ US2582781009

SecurityDORM / Dorman Products, Inc.
InstitutionCitigroup Inc
Latest Disclosed Ownership6,092 shares
Latest Disclosed Value $ 635,762
Citigroup Inc reports 33.36% decrease in ownership of DORM / Dorman Products, Inc.

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 6,092 shares of Dorman Products, Inc. (US:DORM) valued at $635,761 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 9,141 shares of Dorman Products, Inc.. This represents a change in shares of -33.36% during the quarter. The current value of the position is $759,977 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 DORMAN PRODS COM 258278100 6,092 -3,049 -33.36 636 -43.61 0.0003
2026-02-13 2025-12-31 13F DORMAN PRODS COM 258278100 9,141 -3,998 -30.43 1,126 -45.02 0.0005
2025-11-10 2025-09-30 13F DORMAN PRODS COM 258278100 13,139 -13,848 -51.31 2,048 -38.13 0.0009
2025-08-11 2025-06-30 13F DORMAN PRODS COM 258278100 26,987 -13,674 -33.63 3,310 -32.46 0.0016
2025-05-12 2025-03-31 13F DORMAN PRODS COM 258278100 40,661 2,128 5.52 4,901 -1.80 0.0025
2025-02-12 2024-12-31 13F DORMAN PRODS COM 258278100 38,533 2,836 7.94 4,992 23.60 0.0030
2024-11-12 2024-09-30 13F DORMAN PRODS COM 258278100 35,697 14,807 70.88 4,038 111.30 0.0023
2024-08-12 2024-06-30 13F DORMAN PRODS COM 258278100 20,890 1,477 7.61 1,911 2.14 0.0012
2024-05-10 2024-03-31 13F DORMAN PRODS COM 258278100 19,413 1,634 9.19 1,871 26.25 0.0012
2024-02-09 2023-12-31 13F DORMAN PRODS COM 258278100 17,779 3,193 21.89 1,483 34.12 0.0010
2023-12-06 2023-09-30 13F/A-1 DORMAN PRODS COM 258278100 14,586 -6,459 -30.69 1,105 -33.35 0.0008
2023-11-09 2023-09-30 13F DORMAN PRODS COM 258278100 14,586 -6,459 1,105 0.0003
2023-08-10 2023-06-30 13F DORMAN PRODS COM 258278100 21,045 7,632 56.90 1,659 43.30 0.0011
2023-05-11 2023-03-31 13F DORMAN PRODS COM 258278100 13,413 -3,773 -21.95 1,157 -16.70 0.0008
2023-02-09 2022-12-31 13F DORMAN PRODS COM 258278100 17,186 3,701 27.45 1,390 25.36 0.0011
2022-11-10 2022-09-30 13F DORMAN PRODS COM 258278100 13,485 1,102 8.90 1,108 -18.47 0.0008
2022-08-10 2022-06-30 13F DORMAN PRODS COM 258278100 12,383 -12,330 -49.89 1,359 -42.12 0.0010
2022-05-12 2022-03-31 13F DORMAN PRODS COM 258278100 24,713 2,331 10.41 2,348 -7.16 0.0014
2022-02-10 2021-12-31 13F DORMAN PRODS COM 258278100 22,382 6,594 41.77 2,529 69.16 0.0014
2021-11-10 2021-09-30 13F DORMAN PRODS COM 258278100 15,788 -409 -2.53 1,495 -10.96 0.0009
2021-08-10 2021-06-30 13F DORMAN PRODS COM 258278100 16,197 7,502 86.28 1,679 88.02 0.0010
2021-05-13 2021-03-31 13F DORMAN PRODS COM 258278100 8,695 852 10.86 893 31.13 0.0006
2021-02-11 2020-12-31 13F DORMAN PRODS COM 258278100 7,843 4,097 109.37 681 101.48 0.0004
2020-11-12 2020-09-30 13F DORMAN PRODUCTS COM 258278100 3,746 -24,336 -86.66 338 -82.05 0.0002
2020-08-12 2020-06-30 13F DORMAN PRODUCTS COM 258278100 28,082 9,500 51.12 1,883 83.17 0.0015
2020-05-12 2020-03-31 13F DORMAN PRODUCTS COM 258278100 18,582 -4,857 -20.72 1,028 -42.08 0.0009
2020-02-12 2019-12-31 13F DORMAN PRODUCTS COM 258278100 23,439 8,629 58.26 1,775 50.68 0.0013
2019-11-08 2019-09-30 13F DORMAN PRODUCTS COM 258278100 14,810 -2,531 -14.60 1,178 -22.04 0.0009
2019-08-12 2019-06-30 13F DORMAN PRODUCTS COM 258278100 17,341 -1,135 -6.14 1,511 -7.13 0.0012
2019-05-13 2019-03-31 13F DORMAN PRODUCTS COM 258278100 18,476 -6,073 -24.74 1,627 -26.35 0.0016
2019-02-12 2018-12-31 13F DORMAN PRODUCTS COM 258278100 24,549 9,546 63.63 2,209 91.42 0.0022
2018-11-13 2018-09-30 13F DORMAN PRODUCTS COM 258278100 15,003 11,721 357.13 1,154 415.18 0.0010
2018-08-10 2018-06-30 13F DORMAN PRODUCTS COM 258278100 3,282 -1,820 -35.67 224 -33.53 0.0002
2018-05-11 2018-03-31 13F DORMAN PRODUCTS COM 258278100 5,102 -801 -13.57 337 -6.91 0.0003
2018-02-12 2017-12-31 13F DORMAN PRODUCTS COM 258278100 5,903 -8,561 -59.19 362 -65.09 0.0003
2017-11-13 2017-09-30 13F DORMAN PRODUCTS COM 258278100 14,464 -11,604 -44.51 1,037 -51.95 0.0008
2017-08-11 2017-06-30 13F DORMAN PRODUCTS COM 258278100 26,068 -3,959 -13.18 2,158 -12.49 0.0019
2017-05-12 2017-03-31 13F DORMAN PRODUCTS COM 258278100 30,027 -22,051 -42.34 2,466 -35.19 0.0022
2017-02-10 2016-12-31 13F DORMAN PRODUCTS COM 258278100 52,078 42,867 465.39 3,805 546.01 0.0034
2016-11-10 2016-09-30 13F DORMAN PRODUCTS COM 258278100 9,211 -8,064 -46.68 589 -40.38 0.0006
2016-08-12 2016-06-30 13F DORMAN PRODUCTS COM 258278100 17,275 -6,730 -28.04 988 -24.29 0.0010
2016-05-13 2016-03-31 13F DORMAN PRODUCTS COM 258278100 24,005 9,353 63.83 1,305 87.77 0.0015
2016-02-12 2015-12-31 13F DORMAN PRODUCTS COM 258278100 14,652 552 3.91 695 -3.07 0.0007
2015-11-13 2015-09-30 13F DORMAN PRODUCTS COM 258278100 14,100 11,293 402.32 717 435.07 0.0007
2015-08-13 2015-06-30 13F DORMAN PRODUCTS COM 258278100 2,807 -7,136 -71.77 134 -72.93 0.0001
2015-05-14 2015-03-31 13F DORMAN PRODUCTS COM 258278100 9,943 -6,345 -38.96 495 -37.02 0.0005
2015-02-17 2014-12-31 13F DORMAN PRODUCTS COM 258278100 16,288 9,122 127.30 786 172.92 0.0007
2014-11-14 2014-09-30 13F DORMAN PRODUCTS COM 258278100 7,166 1,125 18.62 288 -3.36 0.0003
2014-08-14 2014-06-30 13F DORMAN PRODUCTS COM 258278100 6,041 3,459 133.97 298 94.77 0.0003
2014-05-15 2014-03-31 13F DORMAN PRODUCTS COM 258278100 2,582 1,095 73.64 153 82.14 0.0002
2014-02-14 2013-12-31 13F DORMAN PRODUCTS COM 258278100 1,487 -6,983 -82.44 84 -80.00 0.0001
2013-11-14 2013-09-30 13F DORMAN PRODUCTS COM 258278100 8,470 -378 -4.27 420 3.96 0.0004
2013-08-14 2013-06-30 13F DORMAN PRODUCTS COM 258278100 8,848 8,848 404 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.