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: Protagonist Therapeutics 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.
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Protagonist Therapeutics Inc. June 20, 202578.7%
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 |
|---|---|---|---|---|---|
| May 8, 2026 | Protagonist Therapeutics Inc. | Open-market sale | −6,000 | $100.00 | $600,000 |
| May 8, 2026 | Protagonist Therapeutics Inc. | Open-market sale | −5,130 | $100.00 | $513,000 |
| May 7, 2026 | Protagonist Therapeutics Inc. | Option exercise | +24,000 | $6.45 | $154,800 |
| May 7, 2026 | Protagonist Therapeutics Inc. | Option exercise | +12,000 | $6.98 | $83,760 |
| May 7, 2026 | Protagonist Therapeutics Inc. | Open-market sale | −36,000 | $100.14 | $3,605,040 |
| May 7, 2026 | Protagonist Therapeutics Inc. | Open-market sale | −12,000 | $100.07 | $1,200,840 |
| Jan 2, 2026 | Protagonist Therapeutics Inc. | Grant or award | +2,695 | — | — |
| Jan 2, 2026 | Gossamer Bio Inc. | Grant or award | +115,750 | — | — |
| Oct 1, 2025 | Gossamer Bio Inc. | Grant or award | +181,250 | — | — |
| Jan 2, 2025 | Protagonist Therapeutics Inc. | Grant or award | +5,130 | — | — |
| Jun 18, 2024 | Gossamer Bio Inc. | Open-market purchase | +100,000 | $0.59 | $59,000 |
| Mar 27, 2024 | Gossamer Bio Inc. | Open-market sale | −6,430 | $1.16 | $7,459 |
| Nov 13, 2023 | Gossamer Bio Inc. | Open-market purchase | +200,000 | $0.56 | $112,000 |
| Jul 24, 2023 | Gossamer Bio Inc. | Grant or award | +54,020 | $1.82 | $98,316 |
| Apr 4, 2023 | Gossamer Bio Inc. | Open-market purchase | +55,000 | $1.02 | $56,100 |
Questions about Bryan Giraudo
What boards is Bryan Giraudo on?
Bryan Giraudo sits on the board of Protagonist Therapeutics Inc.
How long has Bryan Giraudo served on boards?
Our records show at least 4 years of board service across 1 board, the earliest from 2023.
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