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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.

Overview All Filings Annual Quarterly Insiders
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