Taysha Gene Therapies, Inc. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Nagendran Sukumar | President and Head of R&D | Option Exercise | 260,047 | $1.71 | $444,680 | 1,266,486 | Nov 28, 2025 |
| Nagendran Sukumar | President and Head of R&D | Sale | 200,000 | $3.23 | $646,000 | 1,006,439 | Sep 10, 2025 |
| Nagendran Sukumar | President and Head of R&D | Sale | 57,054 | $2.85 | $162,604 | 1,165,289 | Aug 21, 2025 |
| Alam Kamran | CHIEF FINANCIAL OFFICER | Sale | 54,491 | $2.85 | $155,299 | 1,187,603 | Aug 21, 2025 |
| Stalfort John A III | — | Award / Grant | 56,623 | — | — | 1,155,224 | Jun 2, 2025 |
| Donenberg Phillip B. | — | Award / Grant | 56,623 | — | — | 219,954 | Jun 2, 2025 |
| Long Alison S | — | Award / Grant | 56,623 | — | — | 105,843 | Jun 2, 2025 |
| Sepp-Lorenzino Laura | — | Award / Grant | 56,623 | — | — | 105,843 | Jun 2, 2025 |
| Manning Paul B | — | Purchase | 750,000 | $2.75 | $2,062,500 | 2,841,704 | May 30, 2025 |
| Alam Kamran | CHIEF FINANCIAL OFFICER | Tax Withholding | 29,843 | $1.69 | $50,435 | 1,242,094 | Mar 11, 2025 |
| Nolan Sean P. | Chief Executive Officer | Award / Grant | 892,500 | — | — | 2,078,358 | Jan 2, 2025 |
| Nagendran Sukumar | President and Head of R&D | Award / Grant | 324,500 | — | — | 1,222,343 | Jan 2, 2025 |
| Alam Kamran | CHIEF FINANCIAL OFFICER | Award / Grant | 431,000 | — | — | 1,271,937 | Jan 2, 2025 |
| Manning Paul B | — | Purchase | 1,333,333 | $2.25 | $2,999,999 | 1,333,333 | Jun 27, 2024 |
| Stalfort John A III | — | Award / Grant | 49,220 | — | — | 1,098,601 | May 29, 2024 |
| Long Alison S | — | Award / Grant | 49,220 | — | — | 49,220 | May 29, 2024 |
| Donenberg Phillip B. | — | Award / Grant | 49,220 | — | — | 163,331 | May 29, 2024 |
| Sepp-Lorenzino Laura | — | Award / Grant | 49,220 | — | — | 49,220 | May 29, 2024 |
| Alam Kamran | CHIEF FINANCIAL OFFICER | Tax Withholding | 1,288 | $1.51 | $1,945 | 840,937 | Feb 2, 2024 |
| Alam Kamran | Chief Financial Officer | Award / Grant | 590,413 | — | — | 842,225 | Jan 2, 2024 |
| Nagendran Sukumar | President and Head of R&D | Award / Grant | 863,617 | — | — | 897,843 | Jan 2, 2024 |
| Nolan Sean P. | Chief Executive Officer | Award / Grant | 1,184,688 | — | — | 1,185,858 | Jan 2, 2024 |
| Manning Paul B | — | Purchase | 100,000 | $1.63 | $163,000 | 16,566,667 | Nov 17, 2023 |
| Alam Kamran | Chief Financial Officer | Sale | 33,000 | $2.33 | $76,890 | 258,042 | Aug 24, 2023 |
| Manning Paul B | — | Purchase | 16,466,667 | $0.90 | $14,820,000 | 16,466,667 | Aug 16, 2023 |
| Stalfort John A III | — | Gift | 50,000 | — | — | 1,049,381 | Aug 16, 2023 |
| Nolan Sean P. | Chief Executive Officer | Purchase | 444,444 | $0.90 | $400,000 | 1,535,545 | Aug 16, 2023 |
| Donenberg Phillip B. | — | Purchase | 111,111 | $0.90 | $100,000 | 114,111 | Aug 16, 2023 |
| Session R.A. II | — | Sale | 80,528 | $0.71 | $57,175 | 8,877,091 | Jul 13, 2023 |
| Session R.A. II | — | Sale | 10,508 | $0.70 | $7,356 | 8,975,719 | Jun 23, 2023 |
| Session R.A. II | — | Sale | 295,653 | $0.71 | $209,914 | 9,125,189 | Jun 21, 2023 |
| Alam Kamran | Chief Financial Officer | Award / Grant | 6,230 | — | — | 291,042 | May 31, 2023 |
| Nagendran Sukumar | President and Head of R&D | Purchase | 5,000 | $0.68 | $3,400 | 34,226 | May 16, 2023 |
| Session R.A. II | — | Other | 251,296 | — | — | 9,420,842 | Mar 6, 2023 |
| Alam Kamran | Chief Financial Officer | Award / Grant | 18,691 | — | — | 284,812 | Feb 2, 2023 |
| Manning Paul B | — | Purchase | 1,500,000 | $2.00 | $3,000,000 | 1,642,202 | Oct 31, 2022 |
| Alam Kamran | Chief Financial Officer | Sale | 3,325 | $3.47 | $11,538 | 266,121 | Aug 23, 2022 |
| Alam Kamran | Chief Financial Officer | Sale | 9,717 | $3.50 | $34,010 | 269,446 | Aug 18, 2022 |
| PRASAD SUYASH | CMO and Head of R&D | Sale | 8,956 | $3.79 | $33,943 | 530,589 | Jul 5, 2022 |
| PRASAD SUYASH | CMO and Head of R&D | Sale | 12,324 | $3.81 | $46,954 | 581,265 | Jun 30, 2022 |
| Manning Paul B | — | Purchase | 45,000 | $7.77 | $349,650 | 2,065,102 | Feb 3, 2022 |
| Donenberg Phillip B. | — | Purchase | 3,000 | $7.78 | $23,340 | 3,000 | Feb 2, 2022 |
| Nagendran Sukumar | — | Purchase | 10,000 | $8.01 | $80,100 | 29,226 | Feb 2, 2022 |
| Manning Paul B | — | Purchase | 2,202 | $13.19 | $29,044 | 34,202 | Nov 24, 2021 |
| Session R.A. II | President and CEO | Purchase | 26,008 | $12.65 | $329,001 | 9,190,920 | Nov 23, 2021 |
| Manning Paul B | — | Purchase | 20,000 | $12.54 | $250,800 | 32,000 | Nov 23, 2021 |
| Alam Kamran | Chief Financial Officer | Sale | 613 | $17.11 | $10,488 | 309,961 | Aug 18, 2021 |
| PRASAD SUYASH | CMO and Head of R&D | Sale | 300 | $25.19 | $7,557 | 633,371 | Jun 29, 2021 |
| Nolan Sean P. | — | Purchase | 1,170 | $22.35 | $26,150 | 1,170 | May 20, 2021 |
| Manning Paul B | — | Purchase | 12,000 | $20.98 | $251,760 | 12,000 | May 14, 2021 |