Primoris Services Corporation
Ownership
Ownership Structure
Who owns Primoris Services Corporation (PRIM)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 98.1% of the shares are freely tradable; institutional investors hold 105.1%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 15.49 | 8,340,660 | +0.5 | 03/31/2026 |
| Wellington Management Company LLP | 8.69 | 4,675,487 | +148.7 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 6.79 | 3,653,916 | +0.0 | 03/31/2026 |
| Fuller & Thaler Asset Management Inc | 5.51 | 2,966,901 | -51.2 | 03/31/2026 |
| Vanguard Capital Management, LLC | 4.34 | 2,335,748 | +0.0 | 03/31/2026 |
| First Trust Advisors L.P. | 4.15 | 2,234,728 | -22.6 | 06/30/2026 |
| State Street Corp | 3.83 | 2,063,531 | +2.6 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 6.14 | 3,305,829 | -0.1 | 08/31/2026 |
| First Trust RBA Amer Indl RenaisTM ETF | 5.57 | 2,995,806 | +0.1 | 08/31/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 3.05 | 1,641,979 | +0.3 | 07/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Mashinski Carla S | Director | 22,448 | 1,719,517 $ | Jul 31, 2026 | direct |
| Mccallister Terry D | Director | 21,500 | 1,646,904 $ | Jul 31, 2026 | direct |
| Rodriguez Jose Ramon | Director | 18,041 | 1,381,941 $ | Jul 31, 2026 | direct |
| King David Lee | Director | 15,297 | 1,171,750 $ | Jul 31, 2026 | direct |
| Ching Michael E. | Director | 10,754 | 823,756 $ | Jul 31, 2026 | direct |
| Saluja Harpreet | Director | 1,719 | 131,675 $ | Jul 31, 2026 | direct |
| Wagner Patricia K | Director | 1,220 | 93,452 $ | Aug 11, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 11, 2026 | Wagner Patricia K | Director | Other | 2,241 | 0.00 | – |
| Jul 31, 2026 | Saluja Harpreet | Director | Other | 356 | – | – |
| Jul 31, 2026 | Ching Michael E. | Director | Other | 356 | – | – |
| Jul 31, 2026 | Rodriguez Jose Ramon | Director | Other | 356 | – | – |
| Jul 31, 2026 | Wagner Patricia K | Director | Other | 356 | – | – |
| Jul 31, 2026 | King David Lee | Director | Other | 356 | – | – |
| Jul 31, 2026 | Mashinski Carla S | Director | Other | 356 | – | – |
| Jul 31, 2026 | Mccallister Terry D | Director | Other | 356 | – | – |
| Jul 15, 2026 | Mccallister Terry D | Director | Buy | 20 | 86.66 | 1,733 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.