TDC (TERADATA CORPORATION)
Insider Trading Activity
Every open-market purchase and sale reported by TDC officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-17 | STEPHEN MCMILLAN | President and CEO | Sell | — | — |
| 2026-09-17 | Michael D Hutchinson | Chief Operating Officer | Sell | — | — |
| 2026-09-03 | Melissa B Fisher | Director | A | — | — |
| 2026-08-18 | Todd McElhatton | Director | A | — | — |
| 2026-08-18 | Kimberly K. Nelson | Director | A | — | — |
| 2026-08-18 | Lisa R Bacus | Director | A | — | — |
| 2026-08-18 | Melissa B Fisher | Director | A | — | — |
| 2026-08-18 | Michael P Gianoni | Director | A | — | — |
| 2026-08-04 | Bernd Leukert | Director | A | — | — |
| 2026-06-17 | Scot Frazier Rogers | Chief Administrative Officer | F | — | — |
| 2026-06-10 | TIMOTHY C K CHOU | Director | Sell | — | — |
| 2026-06-02 | Richard J Petley | Chief Revenue Officer | Sell | — | — |
| 2026-05-26 | Todd McElhatton | Director | Sell | — | — |
| 2026-05-20 | John Ederer | Chief Financial Officer | F | — | — |
| 2026-05-20 | Sumeet Arora | Chief Product Officer | MIXED | — | — |
| 2026-05-18 | Todd McElhatton | Director | A | — | — |
| 2026-05-18 | TIMOTHY C K CHOU | Director | A | — | — |
| 2026-05-18 | JOHN SCHWARZ | Director | A | — | — |
| 2026-05-18 | Melissa B Fisher | Director | A | — | — |
| 2026-05-18 | Joanne Beth Olsen | Director | A | — | — |
| 2026-05-18 | Kimberly K. Nelson | Director | A | — | — |
| 2026-05-18 | Michael P Gianoni | Director | A | — | — |
| 2026-05-18 | Lisa R Bacus | Director | A | — | — |
| 2026-05-14 | Richard J Petley | Chief Revenue Officer | F | — | — |
| 2026-05-13 | STEPHEN MCMILLAN | President and CEO | Sell | — | — |
| 2026-05-08 | Richard J Petley | Chief Revenue Officer | Sell | — | — |
| 2026-05-08 | Sumeet Arora | Chief Product Officer | Sell | — | — |
| 2026-03-10 | Richard J Petley | Chief Revenue Officer | MIXED | — | — |
| 2026-03-10 | Michael D Hutchinson | Chief Operating Officer | MIXED | — | — |
| 2026-03-10 | Scot Frazier Rogers | Chief Administrative Officer | A | — | — |
| 2026-03-10 | Sumeet Arora | Chief Product Officer | A | — | — |
| 2026-03-10 | John Ederer | Chief Financial Officer | A | — | — |
| 2026-03-10 | STEPHEN MCMILLAN | President and CEO | MIXED | — | — |
| 2026-03-10 | Melissa B Fisher | Director | A | — | — |
| 2026-03-05 | Richard J Petley | Chief Revenue Officer | F | — | — |
| 2026-03-05 | Michael D Hutchinson | Chief Operating Officer | F | — | — |
| 2026-03-05 | STEPHEN MCMILLAN | President and CEO | F | — | — |
| 2026-03-03 | Michael D Hutchinson | Chief Operating Officer | F | — | — |
| 2026-03-03 | STEPHEN MCMILLAN | President and CEO | F | — | — |
| 2026-03-03 | Richard J Petley | Chief Revenue Officer | F | — | — |
| 2026-02-27 | STEPHEN MCMILLAN | President and CEO | Sell | — | — |
| 2026-02-25 | Michael P Gianoni | Director | Sell | — | — |
| 2026-02-13 | Michael D Hutchinson | Chief Operating Officer | MIXED | — | — |
| 2026-02-13 | Richard J Petley | Chief Revenue Officer | MIXED | — | — |
| 2026-02-13 | Scot Frazier Rogers | Chief Administrative Officer | MIXED | — | — |
| 2026-02-13 | STEPHEN MCMILLAN | President and CEO | MIXED | — | — |
| 2026-02-13 | Sumeet Arora | Chief Product Officer | MIXED | — | — |
| 2026-02-13 | John Ederer | Chief Financial Officer | MIXED | — | — |
| 2026-02-13 | Cynthia Paul | 10%+ Owner | Sell | — | — |
| 2025-11-18 | John Ederer | Chief Financial Officer | F | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | 10%+ Owner | 9,354,676 | — |
| — | President and CEO | 752,446 | — |
| — | Interim President & CEO | 518,422 | — |
| — | Chief Financial Officer | 368,426 | — |
| — | President and CEO | 325,203 | — |
| — | Chief Services Officer | 310,646 | — |
| — | Chief Product Officer | 287,899 | — |
| — | Chief Financial Officer | 286,857 | — |
| — | Chief Administrative Officer | 216,637 | — |
| — | Chief Revenue Officer | 194,880 | — |
| — | Chief Revenue Officer | 188,571 | — |
| — | Chief Operating Officer | 171,927 | — |
| — | Chief People Officer | 142,707 | — |
| — | Chief Legal Officer | 142,253 | — |
| — | Chief Financial Officer | 125,772 | — |
| — | President and CEO | 121,896 | — |
| — | Chief Revenue Officer | 119,422 | — |
| — | Chief Operating Officer | 118,355 | — |
| — | Interim Chief Financial Ofcr | 114,618 | — |
| — | Chief Marketing Officer | 112,626 | — |
| — | Director | 110,569 | — |
| — | General Counsel | 102,331 | — |
| — | EVP & Chief Financial Officer | 101,496 | — |
| — | Co-President | 96,036 | — |
| — | Director | 95,711 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the TDC quote page; the site-wide leaderboard is on the insider transactions hub.