Arkolith/Insider Trading/TSHA

TSHA Insider Trading

Taysha Gene Therapies, Inc. · full profile →Last filing Jul 10, 2026
Net Selling · 180d
Open-Market Buys (180d)
$0
0 insiders
Open-Market Sells (180d)
$4.0M
3 insiders
Net Insider Flow
-$4.0M
open market, 180d
Reporting Insiders
3
9 P/S transactions
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Build on these Form 4 transactions

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Recent Form 4 Transactions

100 shown
DateInsiderRoleActionSharesPriceValue
Jul 10, 2026Nagendran SukumarPresident and Head of R&D, DirectorSell(S)200K$6.24$1.2M
Jun 1, 2026Sepp-Lorenzino LauraDirectorGrant(A)43K—$0
Jun 1, 2026Sepp-Lorenzino LauraDirectorGrant(A)21K—$0
Jun 1, 2026Stalfort John A IIIDirectorGrant(A)43K—$0
Jun 1, 2026Stalfort John A IIIDirectorGrant(A)21K—$0
Jun 1, 2026Long Alison SDirectorGrant(A)43K—$0
Jun 1, 2026Long Alison SDirectorGrant(A)21K—$0
Jun 1, 2026Donenberg Phillip B.DirectorGrant(A)43K—$0
Jun 1, 2026Donenberg Phillip B.DirectorGrant(A)21K—$0
Apr 10, 2026Nagendran SukumarPresident and Head of R&D, DirectorOption exercise(M)19K—$0
Apr 10, 2026Nagendran SukumarPresident and Head of R&D, DirectorSell(S)200K$4.46$892K
Apr 10, 2026Nagendran SukumarPresident and Head of R&D, DirectorOption exercise(M)19K$1.71$33K
Feb 4, 2026Alam KamranCHIEF FINANCIAL OFFICERSell(S)2K$4.52$7K
Jan 26, 2026Nolan Sean P.Chief Executive Officer, DirectorSell(S)41K$4.61$190K
Jan 26, 2026Nagendran SukumarPresident and Head of R&D, DirectorSell(S)27K$4.61$124K
Jan 26, 2026Alam KamranCHIEF FINANCIAL OFFICERSell(S)24K$4.61$110K
Jan 23, 2026Nolan Sean P.Chief Executive Officer, DirectorSell(S)137K$4.75$650K
Jan 23, 2026Nagendran SukumarPresident and Head of R&D, DirectorSell(S)89K$4.75$423K
Jan 23, 2026Alam KamranCHIEF FINANCIAL OFFICERSell(S)79K$4.75$375K
Jan 12, 2026Nolan Sean P.Chief Executive Officer, DirectorGrant(A)1.0M—$0
Jan 12, 2026Nolan Sean P.Chief Executive Officer, DirectorGrant(A)648K—$0
Jan 12, 2026Nagendran SukumarPresident and Head of R&D, DirectorOption exercise(M)89K$1.71$152K
Jan 12, 2026Nagendran SukumarPresident and Head of R&D, DirectorOption exercise(M)111K$0.70$78K
Jan 12, 2026Nagendran SukumarPresident and Head of R&D, DirectorSell(S)200K$4.71$942K
Jan 12, 2026Nagendran SukumarPresident and Head of R&D, DirectorGrant(A)427K—$0
Jan 12, 2026Nagendran SukumarPresident and Head of R&D, DirectorOption exercise(M)111K—$0
Jan 12, 2026Nagendran SukumarPresident and Head of R&D, DirectorOption exercise(M)89K—$0
Jan 12, 2026Nagendran SukumarPresident and Head of R&D, DirectorGrant(A)274K—$0
Jan 12, 2026Alam KamranCHIEF FINANCIAL OFFICERGrant(A)359K—$0
Jan 12, 2026Alam KamranCHIEF FINANCIAL OFFICERGrant(A)231K—$0
Dec 1, 2025Nagendran SukumarPresident and Head of R&D, DirectorSell(S)260K$4.51$1.2M
Dec 1, 2025Nagendran SukumarPresident and Head of R&D, DirectorOption exercise(M)260K$1.71$445K
Dec 1, 2025Nagendran SukumarPresident and Head of R&D, DirectorOption exercise(M)260K—$0
Nov 28, 2025Nagendran SukumarPresident and Head of R&D, DirectorSell(S)110K$4.75$523K
Nov 28, 2025Nagendran SukumarPresident and Head of R&D, DirectorOption exercise(M)40K$1.71$68K
Nov 28, 2025Nagendran SukumarPresident and Head of R&D, DirectorOption exercise(M)70K$0.70$49K
Nov 28, 2025Nagendran SukumarPresident and Head of R&D, DirectorOption exercise(M)70K—$0
Nov 28, 2025Nagendran SukumarPresident and Head of R&D, DirectorOption exercise(M)40K—$0
Sep 10, 2025Nagendran SukumarPresident and Head of R&D, DirectorOption exercise(M)41K$0.70$29K
Sep 10, 2025Nagendran SukumarPresident and Head of R&D, DirectorSell(S)200K$3.23$646K
Sep 10, 2025Nagendran SukumarPresident and Head of R&D, DirectorOption exercise(M)41K—$0
Aug 21, 2025Alam KamranCHIEF FINANCIAL OFFICERSell(S)54K$2.85$155K
Aug 21, 2025Nagendran SukumarPresident and Head of R&D, DirectorSell(S)57K$2.85$163K
Jun 2, 2025Sepp-Lorenzino LauraDirectorGrant(A)57K—$0
Jun 2, 2025Sepp-Lorenzino LauraDirectorGrant(A)113K—$0
Jun 2, 2025Long Alison SDirectorGrant(A)57K—$0
Jun 2, 2025Long Alison SDirectorGrant(A)113K—$0
Jun 2, 2025Donenberg Phillip B.DirectorGrant(A)57K—$0
Jun 2, 2025Donenberg Phillip B.DirectorGrant(A)113K—$0
Jun 2, 2025Stalfort John A IIIDirectorGrant(A)57K—$0
Jun 2, 2025Stalfort John A IIIDirectorGrant(A)113K—$0
May 30, 2025Manning Paul B10% OwnerBuy(P)750K$2.75$2.1M
Mar 11, 2025Alam KamranCHIEF FINANCIAL OFFICERTax withholding(F)30K$1.69$50K
Jan 2, 2025Alam KamranCHIEF FINANCIAL OFFICERGrant(A)431K—$0
Jan 2, 2025Alam KamranCHIEF FINANCIAL OFFICERGrant(A)431K—$0
Jan 2, 2025Nagendran SukumarPresident and Head of R&D, DirectorGrant(A)325K—$0
Jan 2, 2025Nagendran SukumarPresident and Head of R&D, DirectorGrant(A)325K—$0
Jan 2, 2025Nolan Sean P.Chief Executive Officer, DirectorGrant(A)893K—$0
Jan 2, 2025Nolan Sean P.Chief Executive Officer, DirectorGrant(A)893K—$0
Jun 27, 2024Manning Paul B10% OwnerBuy(P)1.3M$2.25$3.0M
May 29, 2024Sepp-Lorenzino LauraDirectorGrant(A)49K—$0
May 29, 2024Sepp-Lorenzino LauraDirectorGrant(A)98K—$0
May 29, 2024Donenberg Phillip B.DirectorGrant(A)49K—$0
May 29, 2024Donenberg Phillip B.DirectorGrant(A)98K—$0
May 29, 2024Long Alison SDirectorGrant(A)49K—$0
May 29, 2024Long Alison SDirectorGrant(A)98K—$0
May 29, 2024Stalfort John A IIIDirectorGrant(A)49K—$0
May 29, 2024Stalfort John A IIIDirectorGrant(A)98K—$0
Feb 2, 2024Alam KamranCHIEF FINANCIAL OFFICERTax withholding(F)1K$1.51$2K
Jan 2, 2024Nolan Sean P.Chief Executive Officer, DirectorGrant(A)1.2M—$0
Jan 2, 2024Nolan Sean P.Chief Executive Officer, DirectorGrant(A)1.2M—$0
Jan 2, 2024Nagendran SukumarPresident and Head of R&D, DirectorGrant(A)864K—$0
Jan 2, 2024Nagendran SukumarPresident and Head of R&D, DirectorGrant(A)864K—$0
Jan 2, 2024Alam KamranChief Financial OfficerGrant(A)590K—$0
Jan 2, 2024Alam KamranChief Financial OfficerGrant(A)590K—$0
Dec 14, 2023Nolan Sean P.Chief Executive Officer, DirectorGrant(A)467K—$0
Dec 14, 2023Nagendran SukumarPresident and Head of R&D, DirectorGrant(A)334K—$0
Dec 14, 2023Alam KamranChief Financial OfficerGrant(A)188K—$0
Nov 17, 2023Manning Paul B10% OwnerBuy(P)100K$1.63$163K
Nov 1, 2023Long Alison SDirectorGrant(A)44K—$0
Aug 24, 2023Alam KamranChief Financial OfficerSell(S)33K$2.33$77K
Aug 16, 2023Donenberg Phillip B.DirectorBuy(P)111K$0.90$100K
Aug 16, 2023Nolan Sean P.Chief Executive Officer, DirectorBuy(P)444K$0.90$400K
Aug 16, 2023Stalfort John A IIIDirectorBuy(P)389K$0.90$350K
Aug 16, 2023Stalfort John A IIIDirectorBuy(P)389K$0.90$350K
Aug 16, 2023Stalfort John A IIIDirectorGift(G)50K—$0
Aug 16, 2023Manning Paul B10% OwnerBuy(P)16.5M$0.90$14.8M
Jul 13, 2023Session R.A. II10% OwnerSell(S)5K$0.70$4K
Jul 12, 2023Session R.A. II10% OwnerSell(S)81K$0.71$57K
Jun 23, 2023Session R.A. II10% OwnerSell(S)18K$0.70$13K
Jun 22, 2023Session R.A. II10% OwnerSell(S)11K$0.70$7K
Jun 22, 2023Stalfort John A IIIDirectorGrant(A)44K—$0
Jun 22, 2023Donenberg Phillip B.DirectorGrant(A)36K—$0
Jun 22, 2023Reape KathleenDirectorGrant(A)36K—$0
Jun 22, 2023Sepp-Lorenzino LauraDirectorGrant(A)36K—$0
Jun 21, 2023Session R.A. II10% OwnerSell(S)139K$0.70$97K
Jun 20, 2023Session R.A. II10% OwnerSell(S)296K$0.71$210K
May 31, 2023Alam KamranCHIEF FINANCIAL OFFICERGrant(A)12K—$0
May 16, 2023Nagendran SukumarPresident and Head of R&D, DirectorBuy(P)5K$0.68$3K
Mar 6, 2023Session R.A. II10% OwnerOther(J)251K—$0

Data Source

Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.

Coverage: Form 4 filings indexed 2021-06-28 → 2026-07-11. Earlier history is backfilling; this window widens as it deepens.

Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).