Time on boards
- Boards served
- 2
- Current seats
- 2
- Board service
- 7 years
- Director since
- 2023
7 years of board service in total across 2 boards, counting each seat separately. Longest: Amarin Corporation plc, 3 years.
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
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Lexicon Pharmaceuticals Inc. May 10, 202499.6%
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 |
|---|---|---|---|---|---|
| Jun 3, 2026 | Lexicon Pharmaceuticals Inc. | Option exercise | +89,312 | — | — |
| Apr 18, 2026 | Amarin Corporation plc | Option exercise | +838 | — | — |
| Apr 18, 2026 | Amarin Corporation plc | Shares withheld for tax | −403 | $14.98 | $6,037 |
| May 13, 2025 | Lexicon Pharmaceuticals Inc. | Option exercise | +36,810 | — | — |
| Apr 18, 2025 | Amarin Corporation plc | Option exercise | +838 | — | — |
| Apr 18, 2025 | Amarin Corporation plc | Shares withheld for tax | −437 | $9.11 | $3,981 |
Questions about Diane E. Sullivan
What boards is Diane E. Sullivan on?
Diane E. Sullivan sits on the boards of Amarin Corporation plc and Lexicon Pharmaceuticals Inc.
How long has Diane E. Sullivan served on boards?
Our records show at least 7 years of board service across 2 boards, the earliest from 2023.
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