General Motors Co (GM) 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 Aug 3, 2026.
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- Filings shown
- 8
- Open-market buys
- 0
- Open-market sells
- 14
Counts cover the 8 most recent Form 4 filings Tradune holds for GM (filed Jun 11 – Aug 3, 2026); the score below covers only the trailing 90 days (0 buys, 10 sells). No completed check of GM's Form 4 list on SEC EDGAR is on record yet; the latest GM filing Tradune holds was filed Aug 3, 2026. This is not guaranteed to be the complete record — see GM'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 6 filings Tradune holds for GM filed Jul 29 – Aug 3, 2026. Grants, exercises, tax withholding and the other Form 4 transaction codes are left out.
10 open-market sales by Rule 10b5-1 checkbox
- On filings with the 10b5-1 box checked
- 10 sales· 549,665 sh
- checkbox disclosed
- On filings with the box not checked
- 0 sales· 0 sh
- not proof that no plan exists
- Not comparable
- 0 sales· 0 sh
- filed before Apr 1, 2023, or no checkbox value in the filing data
Counts are Form 4 lines as filed. The checkbox is one per filing, so every sale on a filing with the box checked is counted there even if only some of its transactions were under a plan; it records what the filer disclosed, and the three categories are not a judgement about why a sale was made.
| Insider | Buys | Sells | Shares bought | Shares sold | Value |
|---|---|---|---|---|---|
| Mary T. BarraChair & CEO | 0 | 6 | — | 422,809 | −$37,685,906 |
| Mark L. ReussPresident | 0 | 1 | — | 71,079 | −$6,394,978 |
| Grant Michael DixtonExecutive Vice President | 0 | 1 | — | 40,000 | −$3,537,600 |
| Rory HarveyExecutive Vice President | 0 | 1 | — | 8,882 | −$772,290 |
| Christopher HattoVice President & CAO | 0 | 1 | — | 6,895 | −$620,550 |
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 GM
No open-market insider purchases (Form 4 code P) were reported for GM between Jun 11, 2026 and Aug 3, 2026. The filings below may include other transaction types — sales, grants, option exercises, and tax withholding — shown for completeness; they are not open-market purchases.
Recent Form 4 filings
Source: SEC EDGAR Form 4 · transaction codes explained
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 40,000 | $88.44 | 54,992 | −42% | Aug 3, 2026 |
| Tax withholding | 35,056 | $88.40 | 94,992 | −27% | Jul 30, 2026 |
| Option exercise | 79,132 | — | 130,048 | +155% | Jul 30, 2026 |
| Option exercise Restricted Stock Units | 79,132 | — | — | — | Jul 30, 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 |
|---|---|---|---|---|---|
| Option exercise | 95,951 | — | 108,673 | +754% | Jul 29, 2026 |
| Tax withholding | 48,820 | $89.40 | 59,853 | −45% | Jul 29, 2026 |
| Option exercise Restricted Stock Units | 95,951 | — | — | — | Jul 29, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Option exercise | 71,079 | $49.46 | 163,372 | +77% | Jul 28, 2026 |
| Open-market sale 10b5-1 box checked | 71,079 | $89.97 | 92,293 | −44% | Jul 28, 2026 |
| Option exercise Employee Stock Option (Right to Buy) | 71,079 | — | — | — | Jul 28, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Option exercise Employee Stock Option (Right to Buy) | 91,843 | — | — | — | Jul 28, 2026 |
| Option exercise | 91,843 | $41.40 | 629,219 | +17% | Jul 28, 2026 |
| Open-market sale 10b5-1 box checked | 91,843 | $90.38 | 537,376 | −15% | Jul 28, 2026 |
| Option exercise | 69,564 | $49.46 | 606,940 | +13% | Jul 28, 2026 |
| Open-market sale 10b5-1 box checked | 69,564 | $90.38 | 537,376 | −11% | Jul 28, 2026 |
| Option exercise | 48,659 | $52.16 | 586,035 | +9.1% | Jul 28, 2026 |
| Open-market sale 10b5-1 box checked | 48,659 | $90.38 | 537,376 | −8.3% | Jul 28, 2026 |
| Open-market sale 10b5-1 box checked | 108,382 | $90.38 | 428,994 | −20% | Jul 28, 2026 |
| Option exercise Employee Stock Option (Right to Buy) | 69,564 | — | — | — | Jul 28, 2026 |
| Option exercise Employee Stock Option (Right to Buy) | 48,659 | — | — | — | Jul 28, 2026 |
| Open-market sale 10b5-1 box checked | 49,495 | $85.33 | 592,242 | −7.7% | Jul 27, 2026 |
| Open-market sale 10b5-1 box checked | 54,866 | $85.32 | 537,376 | −9.3% | Jul 27, 2026 |
| Option exercise Employee Stock Option (Right to Buy) | 49,495 | — | — | — | Jul 27, 2026 |
| Option exercise | 49,495 | $52.16 | 641,737 | +8.4% | Jul 27, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 6,895 | $90.00 | 18,899 | −27% | Jul 28, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 8,882 | $86.95 | 28,513 | −24% | Jul 27, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Option exercise Employee Stock Option (Right to Buy) | 6,867 | — | — | — | Jun 16, 2026 |
| Option exercise Employee Stock Option (Right to Buy) | 8,896 | — | — | — | Jun 16, 2026 |
| Option exercise | 8,896 | $52.16 | 601,138 | +1.5% | Jun 16, 2026 |
| Open-market sale 10b5-1 box checked | 8,896 | $85.10 | 592,242 | −1.5% | Jun 16, 2026 |
| Option exercise Employee Stock Option (Right to Buy) | 83,476 | — | — | — | Jun 16, 2026 |
| Option exercise | 6,867 | $41.40 | 599,109 | +1.2% | Jun 16, 2026 |
| Open-market sale 10b5-1 box checked | 6,867 | $85.10 | 592,242 | −1.1% | Jun 16, 2026 |
| Option exercise | 83,476 | $49.46 | 675,718 | +14% | Jun 16, 2026 |
| Open-market sale 10b5-1 box checked | 83,476 | $85.10 | 592,242 | −12% | Jun 16, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Option exercise Employee Stock Option (Right to Buy) | 20,582 | — | — | — | Jun 9, 2026 |
| Open-market sale 10b5-1 box checked | 20,582 | $85.00 | 592,242 | −3.4% | Jun 9, 2026 |
| Option exercise | 20,582 | $41.40 | 612,824 | +3.5% | Jun 9, 2026 |
Insider filings reported around the same time
Other companies whose most recent Form 4 was filed closest to GM's (Aug 3, 2026).
Frequently asked about GM insider activity
How many insiders bought GM stock in these Form 4 filings?
No open-market purchases (Form 4 code P) of GM shares were reported by General Motors Co insiders between Jun 11, 2026 and Aug 3, 2026. The 8 filings shown on this page cover other transaction types — sales, grants, option exercises, and tax withholding.
Who filed the most recent Form 4 for GM?
The most recent Form 4 on this page was filed by Grant Michael Dixton (Executive Vice President) on Aug 3, 2026, reporting 4 transactions. 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 GM insider sale shown?
The largest open-market sale among the filings shown was 108,382 GM shares at $90.38 (about $9,795,565) by Mary T. Barra (Chair & CEO) on Jul 28, 2026. Value is shares × the price reported on the Form 4; that Form 4 has the Rule 10b5-1 box checked.
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 GM 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.