Stephen Mcmillan
President and CEO at Teradata Corporation
Sits on 2 boards. Last updated September 28, 2026
Time on boards
- Boards served
- 2
- Current seats
- 2
- Board service
- 5 years
- Director since
- 2023
5 years of board service in total across 2 boards, counting each seat separately. Longest: Teradata Corporation, 3 years.
Chief executive roles
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
Lumen Technologies Inc. May 20, 202699.0%
-
Lumen Technologies Inc. May 13, 202598.2%
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Nov 9, 2026 | Teradata Corporation | Open-market sale | −10,000 | $32.51 | $325,100 |
| Sep 15, 2026 | Teradata Corporation | Open-market sale | −10,000 | $30.02 | $300,200 |
| May 21, 2026 | Lumen Technologies Inc. | Grant or award | +25,197 | $9.44 | $237,860 |
| May 12, 2026 | Teradata Corporation | Open-market sale | −20,000 | $31.71 | $634,200 |
| Mar 9, 2026 | Teradata Corporation | Other | −4,376 | — | — |
| Mar 6, 2026 | Teradata Corporation | Shares withheld for tax | −22,230 | $28.02 | $622,885 |
| Mar 3, 2026 | Teradata Corporation | Shares withheld for tax | −40,319 | $30.36 | $1,224,085 |
| Mar 1, 2026 | Teradata Corporation | Grant or award | +206,271 | — | — |
| Feb 27, 2026 | Teradata Corporation | Shares withheld for tax | −20,090 | $31.49 | $632,634 |
| Feb 26, 2026 | Teradata Corporation | Open-market sale | −50,000 | $30.26 | $1,513,000 |
| Feb 11, 2026 | Teradata Corporation | Grant or award | +141,402 | — | — |
| Feb 11, 2026 | Teradata Corporation | Shares withheld for tax | −74,121 | $37.88 | $2,807,703 |
| Feb 11, 2026 | Teradata Corporation | Grant or award | +105,130 | — | — |
| Feb 11, 2026 | Teradata Corporation | Shares withheld for tax | −18,346 | $37.88 | $694,946 |
| May 14, 2025 | Lumen Technologies Inc. | Grant or award | +51,394 | — | — |
Questions about Stephen Mcmillan
What boards is Stephen Mcmillan on?
Stephen Mcmillan sits on the boards of Lumen Technologies Inc. and Teradata Corporation.
What company is Stephen Mcmillan the CEO of?
Stephen Mcmillan is President and CEO of Teradata Corporation.
How long has Stephen Mcmillan served on boards?
Our records show at least 5 years of board service across 2 boards, the earliest from 2023.
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