Primoris Services Corp (PRIM) insider trading
Recent insider transactions reported to the SEC on Form 4 — directors and officers buying or selling their own company’s stock. Sourced directly from public SEC filings, latest filed Oct 16, 2026.
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- Filings shown
- 11
- Open-market buys
- 2
- Open-market sells
- 0
- Buys, 10b5-1 box not checked
- 2 of 2
Counts cover the 11 most recent Form 4 filings Tradune holds for PRIM (filed Jul 17 – Oct 16, 2026); the score below covers only the trailing 90 days (1 buy, 0 sells). No completed check of PRIM's Form 4 list on SEC EDGAR is on record yet; the latest PRIM filing Tradune holds was filed Oct 16, 2026. This is not guaranteed to be the complete record — see PRIM's full Form 4 filing history on SEC EDGAR.
Open-market activity, last 90 days
Purchases (Form 4 code P) and sales (code S) on the 10 filings Tradune holds for PRIM filed Jul 31 – Oct 16, 2026. Grants, exercises, tax withholding and the other Form 4 transaction codes are left out.
| Insider | Buys | Sells | Shares bought | Shares sold | Value |
|---|---|---|---|---|---|
| Terry D. McCallisterDirector | 1 | 0 | 22 | — | +$1,720 |
Value = shares × the price reported on each Form 4 (+ purchases, − sales); every open-market line in this window disclosed a price.
Summarises ~90 days of public SEC Form 4 activity — more distinct buyers, officer involvement and net buying score higher. A description of filing activity, not a rating or buy signal. How this score is computed →
How to read this: an open-market purchase (Form 4 code P) is a buy at the market price with the insider’s own money, as opposed to a grant, award or option exercise; an open-market sale is code S. When two or more distinct insiders report open-market purchases in the same 90-day window, this site labels that a cluster — a definition, not a forecast; see insider cluster buying. “Held after” is Form 4 Table I column 5; “Change” = shares ÷ holdings before the trade (held after − shares for an acquisition, held after + shares for a disposition).
Insider Buying at PRIM
Insiders reported 2 open-market purchases of PRIM between Jul 17, 2026 and Oct 16, 2026, across 1 distinct buyer. The most recent purchase was reported by Terry D. McCallister (Director) on Oct 15, 2026. Grants, option exercises, and tax-withholding transactions are excluded from these counts.
Recent Form 4 filings
Source: SEC EDGAR Form 4 · transaction codes explained
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market purchase 10b5-1 box not checked | 22 | $79.98 | 21,522 | +0.1% | Oct 15, 2026 |
† change in this filer’s own reported holding line (Form 4 Table I, col. 5), not of total company ownership; small prior holdings produce large percentages, so under 100 shares the prior holding is shown instead.
“10b5-1 box checked” = the filer checked the Form 4 box stating that a transaction on the filing was made under a plan intended to satisfy Rule 10b5-1(c); “10b5-1 box not checked” = the box was left blank, which does not prove that no plan exists. The box applies to Form 4s filed from April 1, 2023; older filings, and boxes we could not read, carry no tag. What the 10b5-1 box means.
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Restricted Stock Units | 2,081 | — | — | — | Sep 1, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Gift | 2,241 | — | 1,220 | −65% | Aug 11, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 356 | — | 1,719 | +26% | Jul 31, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 356 | — | 10,754 | +3.4% | Jul 31, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 356 | — | 18,041 | +2.0% | Jul 31, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 356 | — | 3,461 | +11% | Jul 31, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 356 | — | 15,297 | +2.4% | Jul 31, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 356 | — | 22,448 | +1.6% | Jul 31, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 356 | — | 21,500 | +1.7% | Jul 31, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market purchase 10b5-1 box not checked | 20 | $86.66 | 21,144 | +0.1% | Jul 15, 2026 |
Insider filings reported around the same time
Other companies whose most recent Form 4 was filed closest to PRIM's (Oct 16, 2026).
Frequently asked about PRIM insider activity
How many insiders bought PRIM stock in these Form 4 filings?
1 distinct insider at Primoris Services Corp reported 2 open-market purchases (Form 4 code P) of PRIM shares between Jul 17, 2026 and Oct 16, 2026, the most recent filed by Terry D. McCallister (Director) on Oct 15, 2026. Grants, option exercises, and tax-withholding transactions are excluded from these counts.
Who filed the most recent Form 4 for PRIM?
The most recent Form 4 on this page was filed by Terry D. McCallister (Director) on Oct 16, 2026, reporting 1 transaction. The original document is linked from the filing list above on SEC EDGAR. Amended filings (Form 4/A) may later revise reported figures.
What was the largest open-market PRIM insider purchase shown?
The largest open-market purchase among the filings shown was 22 PRIM shares at $79.98 (about $1,720) by Terry D. McCallister (Director) on Oct 15, 2026. Value is shares × the price reported on the Form 4; its Rule 10b5-1 box is not checked.
Do the recent PRIM insider purchases have the Form 4 10b5-1 box checked?
No. All 2 PRIM open-market purchases shown were reported with the Rule 10b5-1 box not checked. A blank box records what the filer disclosed; it does not prove that no plan exists. Latest: Terry D. McCallister (Director) on Oct 15, 2026, 22 shares.
New to Form 4s? The transaction codes, the 90-day window and the 0–100 score are defined on the insider-activity score methodology page.
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Track PRIM insider filings free →This score summarizes SEC Form 4 filing activity over the trailing 90 days. It is descriptive, not predictive — not a rating, recommendation, or investment advice. Data: SEC EDGAR (public domain), as filed; amendments may revise figures. Tradune is not a registered investment adviser.
Data as filed; amended filings (Form 4/A) may revise figures. Sales may occur under prearranged Rule 10b5-1 trading plans.