Primoris Services
PRIM · NYSE
Who owns PRIM
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 46.8% of PRIM’s shares.
- BlackRock Institutional Trust Company, N.A.11.1%
- Wellington Management Company, LLP8.6%
- Vanguard Portfolio Management, LLC5.8%
- Vanguard Capital Management, LLC4.3%
- Next 6 largest institutions17.0%
- All other shareholders53.2%
| Holder | Shares | % of shares |
|---|---|---|
| BlackRock Institutional Trust Company, N.A. | 6.01M | 11.08% |
| Wellington Management Company, LLP | 4.68M | 8.62% |
| Vanguard Portfolio Management, LLC | 3.12M | 5.76% |
| Vanguard Capital Management, LLC | 2.36M | 4.34% |
| First Trust Advisors L.P. | 2.23M | 4.12% |
| State Street Investment Management (US) | 1.81M | 3.34% |
| Millennium Management LLC | 1.49M | 2.75% |
| Southpoint Capital Advisors LP | 1.40M | 2.58% |
| Dimensional Fund Advisors, L.P. | 1.18M | 2.18% |
| Geode Capital Management, L.L.C. | 1.10M | 2.02% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| iShares Core S&P Small-Cap ETF | 3.31M | 6.10% |
| First Trust RBA Amer Industrial Renaissance ETF | 2.98M | 5.50% |
| Fuller & Thaler Behavioral Small-Cap Equity Fund | 2.13M | 3.93% |
| Vanguard Total Stock Market Index Fund | 1.64M | 3.03% |
| Vanguard Small-Cap Index Fund | 1.19M | 2.18% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders bought $1.00M (3 trades) and sold $6.18M (9 trades) of PRIM on the open market.
| Insider | Type | Shares | Value |
|---|---|---|---|
| MCCALLISTER TERRY D | Buy | 22 | $1.76K |
| Stricker Travis | Award | 2.08K | — |
| Wagner Patricia K | Gift | 2.24K | — |
| Saluja Harpreet | Award | 356 | — |
| Ching Michael E. | Award | 356 | — |
| Rodriguez Jose Ramon | Award | 356 | — |
| Wagner Patricia K | Award | 356 | — |
| King David Lee | Award | 356 | — |
| MASHINSKI CARLA S | Award | 356 | — |
| MCCALLISTER TERRY D | Award | 356 | — |
Congressional trades
Disclosed by members of Congress over the last 12 months
| Member | Type | Amount | Traded |
|---|---|---|---|
| Gil CisnerosHouse | Sale | $1K–$15K | Feb 18, 2026 |
| Gil CisnerosHouse | Sale | $1K–$15K | Dec 11, 2025 |
| Gil CisnerosHouse | Sale | $1K–$15K | Nov 24, 2025 |
| Gil CisnerosHouse | Sale | $1K–$15K | Nov 6, 2025 |
Short interest
Settled Sep 30, 2026
- Shares short
- 5.04M
- Days to cover
- 3.69
- % of shares outstanding
- 9.28%
- Average daily volume
- 1.37M
- Change since last report
- −7.4%
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