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Teradata Corp /De/ (New York Stock Exchange:TDC)
US · Delayed Price · Currency is USD
Also listed: 0LEE.LTechnology · Software - Infrastructure
34.85-0.03 (-0.09%)
Insider Score
––Not scored
TDC Insider Score
Insiders filed in the last 90 days, but none of those trades qualified for scoring — round-trip buys and filings whose price is far off the market are excluded.
TDC Stock Insider Trading Activity
TDC stock’s insider trading shows 7 sales on the open market for an estimated $3.53M by company insiders over the last 6 months.
Not enough price history.
Insider Trading Activity (Form 4 Filings)
An insider trade occurs when an individual that has non-public information about a company buys or sells shares of that company’s stock. Examples of insiders include a company’s executive officers (CEO, CFO, COO), its board of directors, and its major shareholders. Insiders are required to submit their trading activity to the SEC through Form 4 filings.
Scored window · last 90 days0 qualifying buys0 insiders$0 bought— these are the numbers in the rankings table; the full history below shows every filing (buys, sells and older activity).
| Insider | Action | Shares | Avg Cost | Total | Δ Holdings | Held After | Date | Grade | Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| MCMILLAN STEPHEN CEO | Sell | 10,000 | $30.02 | $300.17K | 1.3% | 752,446 | Sep 15, 2026 | — | Form 4 |
| Hutchinson Michael D COO | Sell | 48,077 | $30.00 | $1.44M | 21.9% | 171,927 | Sep 15, 2026 | — | Form 4 |
| Fisher Melissa B Director | Award | 344 | — | — | 2.2% | 15,800 | Sep 1, 2026 | — | Form 4 |
| Fisher Melissa B Director | Award | 619 | — | — | 4.2% | 15,456 | Sep 1, 2026 | — | Form 4 |
| Nelson Kimberly K. Director | Award | 2,197 | — | — | 3.5% | 64,172 | Aug 14, 2026 | — | Form 4 |
| McElhatton Todd Director | Award | 2,197 | — | — | 8.2% | 28,862 | Aug 14, 2026 | — | Form 4 |
| Gianoni Michael P Director | Award | 2,197 | — | — | 5.4% | 42,510 | Aug 14, 2026 | — | Form 4 |
| Bacus Lisa R Director | Award | 2,197 | — | — | 2.6% | 86,091 | Aug 14, 2026 | — | Form 4 |
| Fisher Melissa B Director | Award | 2,197 | — | — | 17.4% | 14,837 | Aug 14, 2026 | — | Form 4 |
| Leukert Bernd Director | Award | 8,330 | — | — | New | 8,330 | Aug 1, 2026 | — | Form 4 |
| Rogers Scot Frazier Other | Tax withheld | 10,266 | $33.62 | $345.14K | 4.3% | 229,884 | Jun 15, 2026 | — | Form 4 |
| Rogers Scot Frazier Other | Tax withheld | 13,247 | $33.62 | $445.36K | 5.8% | 216,637 | Jun 15, 2026 | — | Form 4 |
| CHOU TIMOTHY C K Director | Sell | 5,657 | $33.72 | $190.75K | 12.6% | 39,210 | Jun 8, 2026 | — | Form 4 |
| Petley Richard J Other | Sell | 16,237 | $35.00 | $568.29K | 7.9% | 189,561 | Jun 1, 2026 | — | Form 4 |
| Petley Richard J Other | Sell | 990 | $35.01 | $34.66K | 0.5% | 188,571 | Jun 1, 2026 | — | Form 4 |
| McElhatton Todd Director | Sell | 15,000 | $33.47 | $502.05K | 36.0% | 26,665 | May 22, 2026 | — | Form 4 |
| Arora Sumeet Other | Sell | 15,000 | $33.00 | $495.00K | 5.6% | 250,772 | May 19, 2026 | — | Form 4 |
| Ederer John CFO | Tax withheld | 13,355 | $32.77 | $437.64K | 3.5% | 368,426 | May 18, 2026 | — | Form 4 |
| Arora Sumeet Other | Tax withheld | 22,127 | $32.77 | $725.10K | 7.7% | 265,772 | May 18, 2026 | — | Form 4 |
| Arora Sumeet Other | Tax withheld | 13,553 | $32.77 | $444.13K | 4.5% | 287,899 | May 18, 2026 | — | Form 4 |
| Nelson Kimberly K. Director | Award | 8,790 | — | — | 16.5% | 61,975 | May 14, 2026 | — | Form 4 |
| Olsen Joanne Beth Director | Award | 8,790 | — | — | 14.6% | 69,001 | May 14, 2026 | — | Form 4 |
| Fisher Melissa B Director | Award | 8,790 | — | — | 228% | 12,640 | May 14, 2026 | — | Form 4 |
| SCHWARZ JOHN Director | Award | 8,790 | — | — | 8.6% | 110,569 | May 14, 2026 | — | Form 4 |
| CHOU TIMOTHY C K Director | Award | 8,790 | — | — | 24.4% | 44,867 | May 14, 2026 | — | Form 4 |
| McElhatton Todd Director | Award | 8,790 | — | — | 26.7% | 41,665 | May 14, 2026 | — | Form 4 |
| Gianoni Michael P Director | Award | 8,790 | — | — | 27.9% | 40,313 | May 14, 2026 | — | Form 4 |
| Bacus Lisa R Director | Award | 8,790 | — | — | 11.7% | 83,894 | May 14, 2026 | — | Form 4 |
What these mean— the action is the SEC’s own Form 4 transaction code. Only a buy or a sell is an open-market trade; the rest are transfers, awards and exercises, which is why they carry no price.
- Sell (S) — Open-market or private sale
- Award (A) — Grant or award from the company, not a purchase
- Tax withheld (F) — Shares withheld to pay tax or an exercise price
Disclaimer — Informational only — not investment advice. Insider transaction data is sourced from SEC Form 4 filings; market data from public feeds and may be delayed. The Insider Score is a proprietary score for research purposes and does not predict future performance. Always do your own research.