Giraudo Bryan has filed 51 insider transactions across 2 companies since March 2023.
Most recent transaction: a grant/award of 60000 shares of Gossamer Bio, Inc. ($GOSS) on March 19, 2026.
Activity breakdown: 4 open-market purchases and 1 sale.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 19, 2026 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | A | Stock Option (Right to Buy) | 60000 | $0.00 | 60,000.0000 | 231,456,247 | 9999.99% | 0.03% |
| March 19, 2026 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | A | Stock Option (Right to Buy) | 211500 | $0.00 | 211,500.0000 | 231,456,247 | 9999.99% | 0.09% |
| March 19, 2026 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | A | Stock Option (Right to Buy) | 211500 | $0.00 | 211,500.0000 | 231,456,247 | 9999.99% | 0.09% |
| March 19, 2026 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | A | Stock Option (Right to Buy) | 176667 | $0.00 | 176,667.0000 | 231,456,247 | 9999.99% | 0.08% |
| March 19, 2026 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | A | Stock Option (Right to Buy) | 100000 | $0.00 | 100,000.0000 | 231,456,247 | 9999.99% | 0.04% |
| March 19, 2026 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | A | Stock Option (Right to Buy) | 47667 | $0.00 | 47,667.0000 | 231,456,247 | 9999.99% | 0.02% |
| March 19, 2026 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | A | Stock Option (Right to Buy) | 96667 | $0.00 | 96,667.0000 | 231,456,247 | 9999.99% | 0.04% |
| March 19, 2026 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | D | Stock Option (Right to Buy) | 693750 | $0.00 | 0.0000 | 231,456,247 | 100.00% | 0.30% |
| March 19, 2026 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | D | Stock Option (Right to Buy) | 638000 | $0.00 | 0.0000 | 231,456,247 | 100.00% | 0.28% |
| March 19, 2026 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | D | Stock Option (Right to Buy) | 543750 | $0.00 | 0.0000 | 231,456,247 | 100.00% | 0.23% |
| March 19, 2026 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | D | Stock Option (Right to Buy) | 181250 | $0.00 | 0.0000 | 231,456,247 | 100.00% | 0.08% |
| March 19, 2026 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | D | Stock Option (Right to Buy) | 211500 | $0.00 | 0.0000 | 231,456,247 | 100.00% | 0.09% |
| March 19, 2026 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | D | Stock Option (Right to Buy) | 211500 | $0.00 | 0.0000 | 231,456,247 | 100.00% | 0.09% |
| March 19, 2026 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | D | Stock Option (Right to Buy) | 176667 | $0.00 | 0.0000 | 231,456,247 | 100.00% | 0.08% |
| March 19, 2026 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | D | Stock Option (Right to Buy) | 100000 | $0.00 | 0.0000 | 231,456,247 | 100.00% | 0.04% |
| March 19, 2026 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | D | Stock Option (Right to Buy) | 60000 | $0.00 | 0.0000 | 231,456,247 | 100.00% | 0.03% |
| March 19, 2026 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | D | Stock Option (Right to Buy) | 47667 | $0.00 | 0.0000 | 231,456,247 | 100.00% | 0.02% |
| March 19, 2026 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | D | Stock Option (Right to Buy) | 96667 | $0.00 | 0.0000 | 231,456,247 | 100.00% | 0.04% |
| March 19, 2026 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | A | Stock Option (Right to Buy) | 693750 | $0.00 | 693,750.0000 | 231,456,247 | 9999.99% | 0.30% |
| March 19, 2026 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | A | Stock Option (Right to Buy) | 638000 | $0.00 | 638,000.0000 | 231,456,247 | 9999.99% | 0.28% |
| March 19, 2026 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | A | Stock Option (Right to Buy) | 543750 | $0.00 | 543,750.0000 | 231,456,247 | 9999.99% | 0.23% |
| March 19, 2026 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | A | Stock Option (Right to Buy) | 181250 | $0.00 | 181,250.0000 | 231,456,247 | 9999.99% | 0.08% |
| Jan. 2, 2026 | Protagonist Therapeutics, Inc | $PTGX | Giraudo Bryan | Director | A | Stock Option (right to buy) | 3762 | $0.00 | 3,762.0000 | 63,573,048 | 9999.99% | 0.01% |
| Jan. 2, 2026 | Protagonist Therapeutics, Inc | $PTGX | Giraudo Bryan | Director | A | Common Stock | 2695 | $0.00 | 25,825.0000 | 63,573,048 | 11.65% | 0.00% |
| Jan. 2, 2026 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | A | Stock Option (Right to Buy) | 693750 | $0.00 | 693,750.0000 | 231,456,247 | 9999.99% | 0.30% |
| Jan. 2, 2026 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | A | Common Stock | 115750 | $0.00 | 869,747.0000 | 231,456,247 | 15.35% | 0.05% |
| Oct. 1, 2025 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | A | Common Stock | 181250 | $0.00 | 753,997.0000 | 227,221,261 | 31.65% | 0.08% |
| March 4, 2025 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | A | Stock Option (Right to Buy) | 638000 | $0.00 | 638,000.0000 | 0 | 9999.99% | 0.00% |
| Jan. 2, 2025 | Protagonist Therapeutics, Inc | $PTGX | Giraudo Bryan | Director | A | Common Stock | 5130 | $0.00 | 23,130.0000 | 65,077,722 | 28.50% | 0.01% |
| Jan. 2, 2025 | Protagonist Therapeutics, Inc | $PTGX | Giraudo Bryan | Director | A | Stock Option (right to buy) | 6584 | $0.00 | 6,584.0000 | 65,077,722 | 9999.99% | 0.01% |
| June 18, 2024 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | P | Common Stock | 100000 | $0.59 | 480,010.0000 | 0 | 26.32% | 0.00% |
| March 27, 2024 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | S | Common Stock | 6430 | $1.16 | 472,747.0000 | 0 | 1.34% | 0.00% |
| Jan. 2, 2024 | Protagonist Therapeutics, Inc | $PTGX | Giraudo Bryan | Director | A | Stock Option (right to buy) | 25700 | $0.00 | 25,700.0000 | 56,763,559 | 9999.99% | 0.05% |
| Jan. 2, 2024 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | A | Stock Option (Right to Buy) | 543750 | $0.00 | 543,750.0000 | 0 | 9999.99% | 0.00% |
| Nov. 20, 2023 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | A | Stock Option (Right to Buy) | 181250 | $0.00 | 181,250.0000 | 0 | 9999.99% | 0.00% |
| Nov. 13, 2023 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | P | Common Stock | 200000 | $0.56 | 479,177.0000 | 0 | 71.64% | 0.00% |
| July 24, 2023 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | A | Common Stock | 13505 | $0.13 | 13,505.0000 | 0 | 9999.99% | 0.00% |
| July 24, 2023 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | A | Common Stock | 54020 | $1.82 | 250,389.0000 | 0 | 27.51% | 0.00% |
| May 5, 2023 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | D | Stock Option (Right to Buy) | 150000 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| May 5, 2023 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | D | Stock Option (Right to Buy) | 265000 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| May 5, 2023 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | A | Stock Option (Right to Buy) | 96667 | $0.00 | 96,667.0000 | 0 | 9999.99% | 0.00% |
| May 5, 2023 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | A | Stock Option (Right to Buy) | 47667 | $0.00 | 47,667.0000 | 0 | 9999.99% | 0.00% |
| May 5, 2023 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | A | Stock Option (Right to Buy) | 100000 | $0.00 | 100,000.0000 | 0 | 9999.99% | 0.00% |
| May 5, 2023 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | A | Stock Option (Right to Buy) | 176667 | $0.00 | 176,667.0000 | 0 | 9999.99% | 0.00% |
| May 5, 2023 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | A | Stock Option (Right to Buy) | 60000 | $0.00 | 60,000.0000 | 0 | 9999.99% | 0.00% |
| May 5, 2023 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | D | Stock Option (Right to Buy) | 145000 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| May 5, 2023 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | D | Stock Option (Right to Buy) | 71500 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| May 5, 2023 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | D | Stock Option (Right to Buy) | 90000 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| April 4, 2023 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | P | Common Stock | 55000 | $1.02 | 225,157.0000 | 0 | 32.32% | 0.00% |
| March 20, 2023 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | A | Stock Option (Right to Buy) | 211500 | $0.00 | 211,500.0000 | 0 | 9999.99% | 0.00% |
| March 20, 2023 | Gossamer Bio, Inc. | $GOSS | Giraudo Bryan | COO/CFO | P | Common Stock | 50000 | $0.97 | 170,157.0000 | 0 | 41.61% | 0.00% |