Transactions
2
Insider / General Motors Co
Tatum Mark A.
Director at General Motors Co
- Company
- General Motors Co
- Ticker
- GM
- First filing on record
- January 5, 2026
- Latest trade on record
- December 31, 2025
- SEC filings
- EDGAR ↗
Tatum Mark A., Director at General Motors Co, has disclosed 2 transactions in GM since January 5, 2026: 0 purchases (0 open-market buys) and 0 sales, worth about $0 at the reported prices. The latest was filed January 5, 2026, 5 days after the trade; 2 filings were late against the 2-business-day Form 4 deadline.
Open-market buys
0
Sales
0
Avg. disclosure lag
5.0d
Trading in charts
Trade timeline
When does this person trade, how big, and in which direction? Every trade in the last 12 months.
Bought (above the line)Sold (below the line)Other transaction
In the last 12 months Tatum Mark A. reported 2 transactions that were neither a purchase nor a sale, such as stock awards, option exercises or shares withheld for tax.
What kind of transactions
Most Form 4 rows are pay arriving or tax being withheld, not a decision to buy or sell. Only code P is an open-market purchase and code S an open-market sale. What each code means: Form 4 transaction codes.
| Code | Meaning | Rows | Shares | Value |
|---|---|---|---|---|
| A | Grant or award | 2 | 3,668 | — |
| Year | Rows | Bought | Sold |
|---|---|---|---|
| 2025 | 2 | 0 | 0 |
Transactions
| Security | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| GM | Other A | December 31, 2025 | January 5, 2026 | 5d | 180 | — | — | latederivative | Form 4 ↗ | |
| GM | Other A | December 31, 2025 | January 5, 2026 | 5d | 3,488 | — | — | latederivative | Form 4 ↗ |
Filings
| Filed | Form | Accession | Rows | Status | Source |
|---|---|---|---|---|---|
| January 5, 2026 | Form 4 | 0001853185-26-000002 | 2 | published | EDGAR ↗ |
Other insiders at General Motors Co
- Barra Mary T Director 58 rows
- Crevoiserat Joanne C. Chief Executive Officer 43 rows
- Reuss Mark L Director 29 rows
- Harvey Rory Executive Vice President 18 rows
- Hatto Christopher Vice President & CAO 17 rows
- RUSSO PATRICIA F Director 16 rows
- Jacobson Paul A Executive Vice President & CFO 10 rows
- JIMENEZ JOSEPH Director 10 rows
- BUSH WESLEY G Director 9 rows
- DIXTON GRANT MICHAEL Executive Vice President 8 rows
Everyone on file, with contracts and lobbying under the company's name: General Motors Co.
Guides for this page
- What is SEC Form 4? Who files: officers, directors and owners of more than 10% of a class of the company's shares.
- Form 4 transaction codes P = purchase. S = sale. These are the two market trades.
- Insider buying vs insider selling Selling outweighs buying by a wide margin in normal times.
- Options and derivatives on Form 4 Table I = shares. Table II = options and other derivatives.
- What disclosure data cannot tell you Filings are late by design: up to 45 days for Congress, two business days for insiders.
Sources and method
| Source | Filings | Rows | First filed | Newest filed | Read the originals |
|---|---|---|---|---|---|
| SEC EDGAR, Form 4 | 1 | 2 | January 5, 2026 | January 5, 2026 | Form 4 list on EDGAR |
Site built October 22, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.
Every row comes from the reporting owner's Form 4 as filed with the SEC (EDGAR ownership XML), read daily. "Value" is shares × the reported price; code P is an open-market purchase, S a sale, M an option exercise, A a grant. The lag is the filing date minus the trade date; Form 4 is due within two business days. Amendments (4/A) are not merged. Details on the methodology page; report an error on corrections.
Not investment advice. Figures are public disclosures shown as filed; they may lag the trade and may be amended later. No recommendation is made or implied.