TDC insider buying and SEC filings, explained
Teradata Corp. · CIK 816761
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$0
Insiders who bought
0
Sold (not marked 10b5-1)
$5.9M
Planned sales (10b5-1)
$4.2M
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Sep 15, 2026 | Planned (10b5-1) | Michael D Hutchinson (President / COO) sold 48,077 shares at $30.00 ($1.4M), marked as a 10b5-1 plan trade. Holdings down 22% to 171,927 shares. | SEC filing Filed Sep 17, 2026 |
| Sep 15, 2026 | Planned (10b5-1) | Stephen Mcmillan (CEO and Director) sold 10,000 shares at about $30.02 ($300K), marked as a 10b5-1 plan trade. Holdings down 1% to 752,446 shares. | SEC filing Filed Sep 17, 2026 |
| Jun 8, 2026 | Planned (10b5-1) | Timothy C. K. Chou (Director) sold 5,657 shares at $33.72 ($191K), marked as a 10b5-1 plan trade. Holdings down 13% to 39,210 shares. | SEC filing Filed Jun 10, 2026 |
| Jun 1, 2026 | Planned (10b5-1) | Richard J Petley (Chief Revenue Officer) sold 17,227 shares at about $35.00 ($603K), marked as a 10b5-1 plan trade. Holdings down 8% to 188,571 shares. | SEC filing Filed Jun 2, 2026 |
| May 22, 2026 | Sale | Todd McElhatton (Director) sold 15,000 shares at about $33.47 ($502K). Holdings down 36% to 26,665 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 26, 2026 |
| May 19, 2026 | Planned (10b5-1) | Sumeet Arora (Chief Product Officer) sold 15,000 shares at $33.00 ($495K), marked as a 10b5-1 plan trade. Holdings down 6% to 250,772 shares. | SEC filing Filed May 20, 2026 |
| May 12, 2026 | Sale | Stephen Mcmillan (CEO and Director) sold 20,000 shares at about $31.71 ($634K). Holdings down 3% to 762,446 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 13, 2026 |
| May 7, 2026 | Planned (10b5-1) | Sumeet Arora (Chief Product Officer) sold 2,645 shares at $30.84 ($82K), marked as a 10b5-1 plan trade. Holdings down 1% to 301,452 shares. | SEC filing Filed May 8, 2026 |
| May 7, 2026 | Planned (10b5-1) | Richard J Petley (Chief Revenue Officer) sold 34,317 shares at $30.84 ($1.1M), marked as a 10b5-1 plan trade. Holdings down 14% to 207,627 shares. | SEC filing Filed May 8, 2026 |
| Feb 26, 2026 | Sale | Stephen Mcmillan (CEO and Director) sold 50,000 shares at about $30.26 ($1.5M). Holdings down 7% to 663,190 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 27, 2026 |
| Feb 24, 2026 | Sale | Michael P Gianoni (Director) sold 25,000 shares at $29.97 ($749K). Holdings down 44% to 31,523 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 25, 2026 |
| Feb 11, 2026 | Sale | Cynthia Paul (10% owner) sold 61,990 shares indirectly (by entity) at about $40.29 ($2.5M). Holdings by entity down 1% to 9,354,676 shares. Not marked as a 10b5-1 plan trade. Filed jointly with 2 other reporting owners. | SEC filing Filed Feb 13, 2026 |
40 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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