Primoris Services Corporation
US ˙ NYSE ˙ US74164F1030

SecurityPRIM / Primoris Services Corporation
InstitutionBoston Partners
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Boston Partners closes position in PRIM / Primoris Services Corporation

On May 11, 2026 - Boston Partners filed a 13F-HR form disclosing ownership of 0 shares of Primoris Services Corporation (US:PRIM) valued at $0 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 420,475 shares of Primoris Services Corporation. The current value of the position is $0 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 PRIMORIS SVCS COM 74164F103 0 -100.00 0
2026-02-13 2025-12-31 13F PRIMORIS SVCS COM 74164F103 420,475 -143,459 -25.44 53,544 -31.17
2025-11-13 2025-09-30 13F PRIMORIS SVCS COM 74164F103 563,934 -964 -0.17 77,788 62.66 0.0799
2025-08-12 2025-06-30 13F/A-1 PRIMORIS SVCS COM 74164F103 564,898 69,996 14.14 47,823 69.59 0.0531
2025-08-07 2025-06-30 13F PRIMORIS SVCS COM 74164F103 564,898 69,996 47,823 0.0220
2025-05-13 2025-03-31 13F PRIMORIS SVCS COM 74164F103 494,902 -1,800 -0.36 28,198 -28.07 0.0341
2025-02-11 2024-12-31 13F PRIMORIS SVCS COM 74164F103 496,702 21,409 4.50 39,204 39.06 0.0477
2024-11-12 2024-09-30 13F PRIMORIS SVCS COM 74164F103 475,293 -22,175 -4.46 28,193 12.17 0.0333
2024-08-14 2024-06-30 13F PRIMORIS SVCS COM 74164F103 497,468 -39,825 -7.41 25,135 7.73 0.0312
2024-05-28 2024-03-31 13F/A-1 PRIMORIS SVCS COM 74164F103 537,293 28,997 5.70 23,332 37.83 0.0278
2024-05-13 2024-03-31 13F PRIMORIS SVCS COM 74164F103 537,293 28,997 23,332 0.0115
2024-02-07 2023-12-31 13F PRIMORIS SVCS COM 74164F103 508,296 -16,471 -3.14 16,928 0.20 0.0224
2023-11-08 2023-09-30 13F PRIMORIS SVCS COM 74164F103 524,767 78,922 17.70 16,894 23.35 0.0234
2023-08-10 2023-06-30 13F PRIMORIS SVCS COM 74164F103 445,845 445,845 13,695 0.0184
2022-11-09 2022-09-30 13F PRIMORIS SVCS COM 74164F103 0 -37,996 -100.00 0 -100.00
2022-08-10 2022-06-30 13F PRIMORIS SVCS COM 74164F103 37,996 0 0.00 827 -8.62 0.0012
2022-05-10 2022-03-31 13F PRIMORIS SVCS COM 74164F103 37,996 6,893 22.16 905 21.31 0.0011
2022-02-04 2021-12-31 13F PRIMORIS SVCS COM 74164F103 31,103 0 0.00 746 -2.10 0.0009
2021-11-05 2021-09-30 13F PRIMORIS SVCS COM 74164F103 31,103 -4,481 -12.59 762 -27.22 0.0010
2021-08-12 2021-06-30 13F PRIMORIS SVCS COM 74164F103 35,584 -1,244 -3.38 1,047 -14.18 0.0013
2021-05-10 2021-03-31 13F PRIMORIS SVCS COM 74164F103 36,828 36,828 1,220 0.0016
2017-02-06 2016-12-31 13F PRIMORIS SVCS COM 74164F103 0 -75,053 -100.00 0 -100.00
2016-11-09 2016-09-30 13F PRIMORIS SVCS COM 74164F103 75,053 -217,577 -74.35 1,547 -72.07 0.0022
2016-08-05 2016-06-30 13F PRIMORIS SVCS COM 74164F103 292,630 -43,010 -12.81 5,539 -32.09 0.0080
2016-05-12 2016-03-31 13F PRIMORIS SVCS COM 74164F103 335,640 -24,937 -6.92 8,156 2.67 0.0120
2016-02-08 2015-12-31 13F PRIMORIS SVCS COM 74164F103 360,577 -190 -0.05 7,944 22.93 0.0114
2015-11-10 2015-09-30 13F PRIMORIS SVCS COM 74164F103 360,767 -162,963 -31.12 6,462 -37.69 0.0098
2015-08-10 2015-06-30 13F PRIMORIS SVCS COM 74164F103 523,730 -85,170 -13.99 10,370 -0.93 0.0149
2015-05-05 2015-03-31 13F PRIMORIS SVCS COM 74164F103 608,900 443,470 268.07 10,467 172.22 0.0156
2015-02-09 2014-12-31 13F PRIMORIS SVCS COM 74164F103 165,430 165,430 3,845 0.0058
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.