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 | 12.70 | 6,837,017 | -18.0 | 06/30/2026 |
| Wellington Management Company LLP | 8.69 | 4,675,487 | +148.7 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 5.80 | 3,123,356 | -14.5 | 06/30/2026 |
| Vanguard Capital Management, LLC | 4.38 | 2,355,491 | +0.8 | 06/30/2026 |
| First Trust Advisors L.P. | 4.15 | 2,234,728 | -22.6 | 06/30/2026 |
| State Street Corp | 3.37 | 1,814,143 | -12.1 | 06/30/2026 |
| Millennium Management LLC | 2.77 | 1,492,740 | +272.4 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 5.96 | 3,205,870 | +0.0 | 09/30/2026 |
| First Trust RBA Amer Indl RenaisTM ETF | 5.52 | 2,970,081 | +0.1 | 09/30/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 3.19 | 1,716,385 | +4.6 | 09/30/2026 |
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 | 1,634,214 $ | Jul 31, 2026 | direct |
| Mccallister Terry D | Director | 21,522 | 1,566,770 $ | Oct 15, 2026 | direct |
| Rodriguez Jose Ramon | Director | 18,041 | 1,313,385 $ | Jul 31, 2026 | direct |
| King David Lee | Director | 15,297 | 1,113,622 $ | Jul 31, 2026 | direct |
| Ching Michael E. | Director | 10,754 | 782,891 $ | Jul 31, 2026 | direct |
| Saluja Harpreet | Director | 1,719 | 125,143 $ | Jul 31, 2026 | direct |
| Wagner Patricia K | Director | 1,220 | 88,816 $ | 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 |
|---|---|---|---|---|---|---|
| Oct 15, 2026 | Mccallister Terry D | Director | Buy | 22 | 79.98 | 1,760 |
| 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: October 30, 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.