Bryan Giraudo serves as Executive at Protagonist Therapeutics, Inc, where they oversee executive responsibilities. Since joining the company, Bryan Giraudo has executed 22 insider transactions totaling $830.4K, demonstrating a bullish approach to their equity position. Their most recent transaction on Jan 2, 2026 involved receiving (via award) 3,762 shares valued at $0.
Bryan Giraudo currently holds 3,762 shares of Protagonist Therapeutics, Inc (PTGX), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Bryan Giraudo has been a net buyer of PTGX stock. They have purchased $675.3K and sold $155.1K worth of shares.
Bryan Giraudo's most recent insider trade was on Jan 2, 2026, when they sold 3,762 shares at $0.00 per share.
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| $N/A |
| Discretionary |
| Oct 1, 2025 | GOSS | $0 | Award | 181,250 | $N/A | Discretionary |
| Jun 18, 2024 | GOSS | $59.0K | Purchase | 100,000 | $0.59 | Discretionary |
| Mar 27, 2024 | GOSS | $7.5K | Sale | 6,430 | $1.16 | Discretionary |
| Nov 13, 2023 | GOSS | $112.0K | Purchase | 200,000 | $0.56 | Discretionary |
| Jul 24, 2023 | GOSS | $98.3K | Award | 54,020 | $1.82 | Discretionary |
| Apr 4, 2023 | GOSS | $56.1K | Purchase | 55,000 | $1.02 | Discretionary |
| Mar 20, 2023 | GOSS | $48.5K | Purchase | 50,000 | $0.97 | Discretionary |
| Jul 15, 2022 | GOSS | $100.0K | Purchase | 13,869 | $7.21 | Discretionary |
| Mar 23, 2022 | GOSS | $95.6K | Sale | 10,722 | $8.92 | Discretionary |
| Mar 23, 2021 | GOSS | $52.0K | Sale | 5,490 | $9.48 | Discretionary |
| Feb 25, 2021 | GOSS | $0 | Award | 45,000 | $N/A | Discretionary |
| Oct 14, 2020 | GOSS | $30.0K | Purchase | 3,000 | $10.01 | Discretionary |
| Jun 23, 2020 | GOSS | $25.9K | Purchase | 2,000 | $12.96 | Discretionary |
| Feb 14, 2020 | GOSS | $0 | Award | 46,500 | $N/A | Discretionary |
| Dec 3, 2019 | PTGX | $45.6K | Purchase | 8,000 | $5.70 | Discretionary |
| Sep 26, 2019 | GOSS | $18.8K | Purchase | 1,121 | $16.78 | Discretionary |
| May 30, 2019 | GOSS | $18.7K | Purchase | 1,000 | $18.70 | Discretionary |
| Feb 12, 2019 | GOSS | $96.0K | Purchase | 6,000 | $16.00 | Discretionary |
| Feb 12, 2019 | GOSS | $0 | Conversion | 17,879 | $N/A | Discretionary |
| May 16, 2017 | PTGX | $64.6K | Purchase | 10,000 | $6.46 | Discretionary |