PRIM · Insider trading · 13F holders · Congress trades
Primoris Services Corp (PRIM)
Who is buying and selling PRIM: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 35
- Insider buys, 90 days
- $2K
- Insider sales, 90 days
- $0
- Congress trades, 12 months
- 6
PRIM at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 1 PRIM insider filed 1 open-market purchase worth $2K on SEC Form 4.
- 35 13F filers hold PRIM among their 50 largest positions, worth $582.5M combined, including Ran Zhou. The biggest bets by portfolio weight are 1060 Capital, LLC (17.5%), West Tower Group, LLC (7.1%) and Value Holdings Management Co. LLC (6.6%). In their latest 13Fs, 10 managers opened a new position and 5 added to one.
- Members of Congress have disclosed 15 PRIM trades since 2015, 1 purchase and 5 sales in the past year; the latest was Gilbert Ray Cisneros, Jr. (D-CA), selling $1K–15K on May 8, 2026.
- PRIM last closed at $75.61 on Oct 29, 2026.
PRIM insider trading
Between Aug 1, 2026 and Oct 29, 2026, 1 PRIM insider filed 1 open-market purchase worth $2K on SEC Form 4.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Oct 16, 2026 | Mccallister Terry D | Director | Buy | 21.505 | $79.98 | $2K | SEC |
Who owns PRIM? Hedge funds and superinvestors
35 13F filers hold PRIM among their 50 largest positions, worth $582.5M combined, including Ran Zhou. The biggest bets by portfolio weight are 1060 Capital, LLC (17.5%), West Tower Group, LLC (7.1%) and Value Holdings Management Co. LLC (6.6%). In their latest 13Fs, 10 managers opened a new position and 5 added to one.
Superinvestors holding PRIM: Ran Zhou 1.6%
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Southpoint Capital Advisors LPHedge fund | 3.2% | $138.8M | 1,400,000 | New | Q2 2026 |
| Van Berkom & Associates Inc.Institutional asset manager | 1.6% | $50.5M | 509,157 | +10.1% shares | Q2 2026 |
| Madison Avenue Partners, LPHedge fund | 2.0% | $45.8M | 462,058 | New | Q2 2026 |
| Ran ZhouHedge fund | 1.6% | $41.1M | 415,103 | New | Q2 2026 |
| Value Holdings Management Co. LLCHedge fund | 6.6% | $39.6M | 399,443 | +0.0% shares | Q2 2026 |
| Cooper Creek Partners Management LLCHedge fund | 1.6% | $38.5M | 388,858 | — | Q2 2026 |
| Bruni J V & Co /coWealth manager | 3.4% | $37.7M | 380,845 | -12.9% shares | Q2 2026 |
| Yaupon Capital Management LPHedge fund | 1.2% | $36.4M | 366,972 | — | Q2 2026 |
| Hennessy Advisors IncMutual fund manager | 1.0% | $27.5M | 368,400 | -4.2% shares | Q3 2026 |
| Engine Capital Management, LPHedge fund | 1.9% | $19.4M | 195,838 | New | Q2 2026 |
| Ardsley Advisory Partners LPHedge fund | 1.5% | $13.4M | 135,000 | — | Q2 2026 |
| Sagefield Capital LPHedge fund | 1.0% | $13.3M | 133,959 | — | Q2 2026 |
| 1060 Capital, LLCHedge fund | 17.5% | $12.4M | 125,000 | New | Q2 2026 |
| SIR Capital Management, L.P.Hedge fund | 1.1% | $9.3M | 93,640 | — | Q2 2026 |
| Bolthouse Investments, LLCHedge fund | 5.1% | $6.2M | 63,000 | -16.0% shares | Q2 2026 |
| Redwood Grove Capital, LLCHedge fund | 1.6% | $6.2M | 62,291 | New | Q2 2026 |
| Hel Ved Capital Management LtdHedge fund | 0.7% | $5.3M | 53,090 | +17.1% shares | Q2 2026 |
| Taproot Management LPInvestment manager | 0.9% | $4.9M | 34,514 | — | Q1 2026 |
| Lumbard & Kellner, LLCWealth manager | 1.4% | $4.6M | 46,897 | +13.0% shares | Q2 2026 |
| A. D. Beadell Investment Counsel, Inc.Investment manager | 2.5% | $3.8M | 50,505 | -1.0% shares | Q3 2026 |
| Dockside LLCAsset manager | 0.9% | $3.7M | 37,080 | — | Q2 2026 |
| Nexpoint Asset Management, L.P.Mutual fund manager | 0.2% | $3.7M | 37,025 | — | Q2 2026 |
| Richard Bernstein Advisors LLCHedge fund | 0.1% | $3.1M | 21,836 | — | Q1 2026 |
| RPG Investment Advisory, LLCWealth manager | 0.5% | $2.5M | 34,075 | -34.6% shares | Q3 2026 |
| Kayne Anderson Capital Advisors LPHedge fund | 0.0% | $2.5M | 25,359 | New | Q2 2026 |
| 1492 Capital Management LLCWealth manager | 0.7% | $2.4M | 23,778 | -11.0% shares | Q2 2026 |
| Arizona PSPRS TrustInvestment manager | 0.1% | $2.3M | 23,500 | New | Q2 2026 |
| FACT Capital, LPHedge fund | 1.1% | $2.0M | 20,167 | New | Q2 2026 |
| West Tower Group, LLCHedge fund | 7.1% | $1.9M | 25,772 | -0.8% shares | Q3 2026 |
| Rithm Capital Corp.Asset manager | 1.4% | $1.2M | 11,900 | +20.2% shares | Q2 2026 |
The 30 largest of 35 positions, by value. Each manager counts with its latest 13F (Q3 2026: 6, Q2 2026: 27, Q1 2026: 2). Screen PRIM in the grand portfolio →
PRIM stock trades by members of Congress
Members of Congress have disclosed 15 PRIM trades since 2015, 1 purchase and 5 sales in the past year; the latest was Gilbert Ray Cisneros, Jr. (D-CA), selling $1K–15K on May 8, 2026.
| Filed | Member | Trade | Amount | Traded | Since |
|---|---|---|---|---|---|
| Jun 8, 2026 | Gilbert Ray Cisneros, Jr.D-CA · House | Sale | $1K–15K | May 8, 2026 | -29.7% |
| Apr 7, 2026 | Gilbert Ray Cisneros, Jr.D-CA · House | Buy | $1K–15K | Mar 3, 2026 | -49.9% |
| Mar 9, 2026 | Gilbert Ray Cisneros, Jr.D-CA · House | Sale | $1K–15K | Feb 18, 2026 | -54.1% |
| Jan 12, 2026 | Gilbert Ray Cisneros, Jr.D-CA · House | Sale | $1K–15K | Dec 11, 2025 | -46.2% |
| Dec 15, 2025 | Gilbert Ray Cisneros, Jr.D-CA · House | Sale | $1K–15K | Nov 24, 2025 | -40.4% |
| Dec 15, 2025 | Gilbert Ray Cisneros, Jr.D-CA · House | Sale | $1K–15K | Nov 6, 2025 | -41.8% |
| Jan 14, 2025 | Josh GottheimerD-NJ · House | Sale | $1K–15K | Dec 6, 2024 | -10.8% |
| Jul 9, 2024 | Josh GottheimerD-NJ · House | Sale | $1K–15K | Jun 27, 2024 | +44.0% |
| Jul 9, 2024 | Josh GottheimerD-NJ · House | Sale | $1K–15K | Jun 21, 2024 | +37.5% |
| Nov 11, 2023 | Josh GottheimerD-NJ · House | Sale | $1K–15K | Oct 27, 2023 | +152.7% |
| Oct 13, 2020 | Josh GottheimerD-NJ · House | Sale | $1K–15K | Sep 15, 2020 | +312.8% |
| Feb 10, 2020 | Josh GottheimerD-NJ · House | Buy | $1K–15K | Jan 10, 2020 | +243.5% |
| Jan 6, 2020 | Josh GottheimerD-NJ · House | Sale | $1K–15K | Dec 10, 2019 | +231.2% |
| Oct 16, 2019 | Gilbert Ray Cisneros, Jr.D-CA · House | Buy | $1K–15K | Sep 17, 2019 | +251.6% |
| Feb 26, 2015 | Thom TillisR-NC · Senate | Sale | $1K–15K | Feb 13, 2015 | +237.4% |
3 members have traded PRIM: Gilbert Ray Cisneros, Jr., Josh Gottheimer, Thom Tillis.
PRIM questions and answers
Are insiders buying PRIM stock?
Between Aug 1, 2026 and Oct 29, 2026, 1 PRIM insider filed 1 open-market purchase worth $2K on SEC Form 4.
Which hedge funds own PRIM?
35 13F filers hold PRIM among their 50 largest positions, worth $582.5M combined, including Ran Zhou. The biggest bets by portfolio weight are 1060 Capital, LLC (17.5%), West Tower Group, LLC (7.1%) and Value Holdings Management Co. LLC (6.6%). In their latest 13Fs, 10 managers opened a new position and 5 added to one.
Has Congress traded PRIM?
Members of Congress have disclosed 15 PRIM trades since 2015, 1 purchase and 5 sales in the past year; the latest was Gilbert Ray Cisneros, Jr. (D-CA), selling $1K–15K on May 8, 2026.
Who is the largest holder of PRIM?
Among 13F filers, Southpoint Capital Advisors LP reports the largest PRIM position, $138.8M (1,400,000 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is 1060 Capital, LLC's: 17.5% of its portfolio.
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