Time on boards
- Boards served
- 3
- Current seats
- 3
- Board service
- 11 years
- Director since
- 2023
11 years of board service in total across 3 boards, counting each seat separately. Longest: Arrowhead Pharmaceuticals Inc., 3 years.
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
Arrowhead Pharmaceuticals Inc. March 19, 202690.3%
-
Annexon Inc. June 5, 202572.2%
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Arrowhead Pharmaceuticals Inc. March 12, 202590.6%
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Protagonist Therapeutics Inc. June 20, 202492.8%
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Arrowhead Pharmaceuticals Inc. March 14, 202495.3%
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Arrowhead Pharmaceuticals Inc. March 16, 202390.8%
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 23, 2026 | Protagonist Therapeutics Inc. | Option exercise | +9,000 | $16.54 | $148,860 |
| Jun 23, 2026 | Protagonist Therapeutics Inc. | Open-market sale | −9,000 | $117.94 | $1,061,460 |
| Jun 10, 2026 | Protagonist Therapeutics Inc. | Option exercise | +3,000 | $11.80 | $35,400 |
| Jun 10, 2026 | Protagonist Therapeutics Inc. | Option exercise | +6,000 | $16.54 | $99,240 |
| Jun 10, 2026 | Protagonist Therapeutics Inc. | Open-market sale | −9,000 | $107.68 | $969,120 |
| May 29, 2026 | Protagonist Therapeutics Inc. | Option exercise | +9,000 | $11.80 | $106,200 |
| May 29, 2026 | Protagonist Therapeutics Inc. | Open-market sale | −9,000 | $99.64 | $896,760 |
| Feb 6, 2026 | Protagonist Therapeutics Inc. | Option exercise | +20,000 | $8.31 | $166,200 |
| Feb 6, 2026 | Protagonist Therapeutics Inc. | Open-market sale | −20,000 | $83.68 | $1,673,600 |
| Jan 2, 2026 | Protagonist Therapeutics Inc. | Grant or award | +2,695 | — | — |
| Dec 19, 2025 | Arrowhead Pharmaceuticals Inc. | Open-market sale | −2,416 | $66.66 | $161,051 |
| Dec 19, 2025 | Arrowhead Pharmaceuticals Inc. | Open-market sale | −5,451 | $68.01 | $370,723 |
| Dec 19, 2025 | Arrowhead Pharmaceuticals Inc. | Open-market sale | −500 | $68.53 | $34,265 |
| Dec 16, 2025 | Arrowhead Pharmaceuticals Inc. | Grant or award | +7,819 | — | — |
| Oct 10, 2025 | Protagonist Therapeutics Inc. | Option exercise | +12,000 | $6.98 | $83,760 |
Questions about William D. Waddill
What boards is William D. Waddill on?
William D. Waddill sits on the boards of Annexon Inc., Arrowhead Pharmaceuticals Inc. and Protagonist Therapeutics Inc.
How long has William D. Waddill served on boards?
Our records show at least 11 years of board service across 3 boards, the earliest from 2023.
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