Bryan Giraudo

Sits on 1 board. Last updated September 27, 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: Protagonist Therapeutics Inc., 3 years.

3 years ยท Since 2023

Shareholder support

Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.

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 โˆ’6,000 $100.00 $600,000
May 8, 2026 Protagonist Therapeutics Inc. Open-market sale โˆ’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 โˆ’36,000 $100.14 $3,605,040
May 7, 2026 Protagonist Therapeutics Inc. Open-market sale โˆ’12,000 $100.07 $1,200,840
Jan 2, 2026 Protagonist Therapeutics Inc. Grant or award +2,695 โ€” โ€”
Jan 2, 2026 Gossamer Bio Inc. Grant or award +115,750 โ€” โ€”
Oct 1, 2025 Gossamer Bio Inc. Grant or award +181,250 โ€” โ€”
Jan 2, 2025 Protagonist Therapeutics Inc. Grant or award +5,130 โ€” โ€”
Jun 18, 2024 Gossamer Bio Inc. Open-market purchase +100,000 $0.59 $59,000
Mar 27, 2024 Gossamer Bio Inc. Open-market sale โˆ’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

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