William J. Newell
CEO at Sutro Biopharma Inc.
Sits on 1 board. Last updated September 28, 2026
Time on boards
- Boards served
- 1
- Current seats
- 1
- Board service
- 4 years
- Director since
- 2023
4 years of board service in total across 1 board, counting each seat separately. Longest: Sutro Biopharma Inc., 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.
-
Sutro Biopharma Inc. June 8, 202381.8%
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 |
|---|---|---|---|---|---|
| Mar 5, 2025 | Sutro Biopharma Inc. | Option exercise | +18,750 | — | — |
| Mar 5, 2025 | Sutro Biopharma Inc. | Shares withheld for tax | −6,708 | $1.36 | $9,123 |
| Mar 4, 2025 | Sutro Biopharma Inc. | Option exercise | +31,125 | — | — |
| Mar 4, 2025 | Sutro Biopharma Inc. | Shares withheld for tax | −11,136 | $1.42 | $15,813 |
| Mar 1, 2025 | Sutro Biopharma Inc. | Option exercise | +23,750 | — | — |
| Mar 1, 2025 | Sutro Biopharma Inc. | Option exercise | +41,750 | — | — |
| Mar 1, 2025 | Sutro Biopharma Inc. | Shares withheld for tax | −25,203 | $1.59 | $40,073 |
| Mar 5, 2024 | Sutro Biopharma Inc. | Option exercise | +18,750 | — | — |
| Mar 5, 2024 | Sutro Biopharma Inc. | Shares withheld for tax | −6,690 | $4.54 | $30,373 |
| Mar 4, 2024 | Sutro Biopharma Inc. | Option exercise | +31,125 | — | — |
| Mar 4, 2024 | Sutro Biopharma Inc. | Shares withheld for tax | −11,105 | $4.79 | $53,193 |
| Mar 1, 2024 | Sutro Biopharma Inc. | Option exercise | +23,750 | — | — |
| Mar 1, 2024 | Sutro Biopharma Inc. | Shares withheld for tax | −8,559 | $4.95 | $42,367 |
| Jan 29, 2024 | Sutro Biopharma Inc. | Option exercise | +13,750 | — | — |
| Jan 29, 2024 | Sutro Biopharma Inc. | Shares withheld for tax | −5,634 | $4.99 | $28,114 |
Questions about William J. Newell
What boards is William J. Newell on?
William J. Newell sits on the board of Sutro Biopharma Inc.
What company is William J. Newell the CEO of?
William J. Newell is CEO of Sutro Biopharma Inc.
How long has William J. Newell served on boards?
Our records show at least 4 years of board service across 1 board, the earliest from 2023.
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