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Taysha Gene Therapies, Inc.

TSHA
Exchange
Nasdaq
Industry
Biological Products, (No Diagnostic Substances)
SEC CIK
0001806310

In the last 90 days, Taysha Gene Therapies, Inc. insiders filed 0 open-market purchases and 1 sale; 208 institutions reported holding it in 13F filings for Q2 2026, worth $2.06B in total; no superinvestor holds it.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by Taysha Gene Therapies, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
0 filings
Open-market sells
1 filing
1 insider, $1.25M in total
Insiders trading
1
Net value
−$1.25M
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for Taysha Gene Therapies, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for Taysha Gene Therapies, Inc.
NameTitleLast reported holdingLast filingFilings, past year
Nagendran SukumarPresident and Head of R&D936,410Jul 10, 20265
Donenberg Phillip B.Director241,289Jun 2, 20261
Stalfort John A IIIDirector1,176,559Jun 2, 20261
Sepp-Lorenzino LauraDirector127,178Jun 2, 20261
Long Alison SDirector127,178Jun 2, 20261
Alam KamranCHIEF FINANCIAL OFFICER1,442,131Feb 6, 20263
Nolan Sean P.Chief Executive Officer2,908,257Jan 27, 20262
Manning Paul B10% Owner2,841,704IndirectJun 3, 20250
Session R.A. II10% Owner8,871,747Jul 14, 20230
Reape KathleenDirector–Jun 26, 20230
Prasad SuyashCMO and Head of R&D530,589Jul 7, 20220

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Jul 10, 2026 (view filing)6:54 PM ETJul 10Same dayNagendran SukumarPresident and Head of R&DSSale−200.0K$6.24−$1.25M−17.6%936.4K after10b5-1
Apr 13, 2026 (view filing)Apr 103 daysNagendran SukumarPresident and Head of R&DSSale−200.0K$4.46−$892.0K−15.0%1.14M after10b5-1
Feb 6, 2026 (view filing)Feb 42 daysAlam KamranCHIEF FINANCIAL OFFICERSSale−1.66K$4.52−$7.48K−0.1%1.44M after
Jan 27, 2026 (view filing)Jan 23-264 daysAlam KamranCHIEF FINANCIAL OFFICERSSale−102.8K$4.72−$485.0K−6.6%1.44M after2 lots
Jan 27, 2026 (view filing)Jan 23-264 daysNagendran SukumarPresident and Head of R&DSSale−116.0K$4.72−$547.5K−8.1%1.32M after2 lots
Jan 27, 2026 (view filing)Jan 23-264 daysNolan Sean P.Chief Executive OfficerSSale−178.1K$4.72−$840.2K−5.8%2.91M after2 lots
Jan 14, 2026 (view filing)Jan 122 daysNagendran SukumarPresident and Head of R&DSSale−200.0K$4.71−$942.0K−16.6%1.01M after10b5-1
Dec 1, 2025 (view filing)Nov 28-Dec 13 daysNagendran SukumarPresident and Head of R&DSSale−370.2K$4.58−$1.70M−26.9%1.01M after2 lots
Sep 12, 2025 (view filing)Sep 102 daysNagendran SukumarPresident and Head of R&DSSale−200.0K$3.23−$646.0K−16.6%1.01M after10b5-1
Aug 22, 2025 (view filing)Aug 211 dayNagendran SukumarPresident and Head of R&DSSale−57.1K$2.85−$162.6K−4.7%1.17M after
Aug 22, 2025 (view filing)Aug 211 dayAlam KamranCHIEF FINANCIAL OFFICERSSale−54.5K$2.85−$155.3K−4.4%1.19M after
Jun 3, 2025 (view filing)May 304 daysManning Paul B10% OwnerPPurchase+750.0K$2.75+$2.06M+35.9%2.84M after
Jul 1, 2024 (view filing)Jun 274 daysManning Paul B10% OwnerPPurchase+1.33M$2.25+$3.00MNew position1.33M after
Nov 20, 2023 (view filing)Nov 173 daysManning Paul B10% OwnerPPurchase+100.0K$1.63+$163.0K+0.6%16.6M after
Aug 25, 2023 (view filing)Aug 241 dayAlam KamranChief Financial OfficerSSale−33.0K$2.33−$76.9K−11.3%258.0K after10b5-1
Aug 16, 2023 (view filing)Aug 16Same dayManning Paul B10% OwnerPPurchase+16.5M$0.90+$14.8MNew position16.5M after
Aug 16, 2023 (view filing)Aug 16Same dayStalfort John A IIIDirectorPPurchase+388.9K$0.90+$350.0K+78.5%884.3K after
Aug 16, 2023 (view filing)Aug 16Same dayStalfort John A IIIDirectorPPurchase+388.9K$0.90+$350.0K+63.7%999.4K after
Aug 16, 2023 (view filing)Aug 16Same dayNolan Sean P.Chief Executive OfficerPPurchase+444.4K$0.90+$400.0K+40.7%1.54M after
Aug 16, 2023 (view filing)Aug 16Same dayDonenberg Phillip B.DirectorPPurchase+111.1K$0.90+$100.0K+3,703.7%114.1K after
Jul 14, 2023 (view filing)Jul 12-132 daysSession R.A. II10% OwnerSSale−85.9K$0.7094−$60.9K−1.0%8.87M after2 lots
Jun 26, 2023 (view filing)Jun 22-234 daysSession R.A. II10% OwnerSSale−28.6K$0.70−$20.0K−0.3%8.96M after2 lots
Jun 22, 2023 (view filing)Jun 20-212 daysSession R.A. II10% OwnerSSale−434.6K$0.7068−$307.2K−4.6%8.99M after2 lots
May 18, 2023 (view filing)May 162 daysNagendran SukumarPresident and Head of R&DPPurchase+5.00K$0.68+$3.40K+17.1%34.2K after
Nov 2, 2022 (view filing)Oct 312 daysManning Paul BDirector, 10% OwnerPPurchase+1.50M$2.00+$3.00M+1,054.8%1.64M after
Aug 24, 2022 (view filing)Aug 231 dayAlam KamranChief Financial OfficerSSale−3.33K$3.47−$11.5K−1.2%266.1K after
Aug 22, 2022 (view filing)Aug 18-224 daysAlam KamranChief Financial OfficerSSale−28.7K$3.70−$106.0K−9.6%269.4K after3 lots
Jul 7, 2022 (view filing)Jul 5-62 daysPrasad SuyashCMO and Head of R&DSSale−12.9K$3.70−$47.6K−2.4%530.6K after2 lots
Jul 1, 2022 (view filing)Jun 29-Jul 12 daysPrasad SuyashCMO and Head of R&DSSale−50.1K$3.65−$183.1K−8.4%543.5K after3 lots
Feb 4, 2022 (view filing)Feb 2-32 daysManning Paul BDirector, 10% OwnerPPurchase+108.0K$7.80+$842.7K+315.8%142.2K after2 lots
Feb 4, 2022 (view filing)Feb 2-32 daysManning Paul BDirector, 10% OwnerPPurchase+93.6K$7.79+$729.1K+4.7%2.09M after3 lots
Feb 3, 2022 (view filing)Feb 21 dayNagendran SukumarDirectorPPurchase+10.0K$8.01+$80.1K+52.0%29.2K after
Feb 3, 2022 (view filing)Feb 21 dayDonenberg Phillip B.DirectorPPurchase+3.00K$7.78+$23.3KNew position3.00K after
Dec 8, 2021 (view filing)Nov 2315 daysLateSession R.A. IIPresident and CEOPPurchase+42.5K$12.44+$529.1K+0.5%9.19M after2 lots
Nov 29, 2021 (view filing)Nov 245 daysManning Paul BDirector, 10% OwnerPPurchase+2.20K$13.19+$29.0K+6.9%34.2K after
Nov 24, 2021 (view filing)Nov 231 dayManning Paul BDirector, 10% OwnerPPurchase+20.0K$12.54+$250.8K+166.7%32.0K after
Aug 20, 2021 (view filing)Aug 18-202 daysAlam KamranChief Financial OfficerSSale−33.0K$16.88−$557.0K−10.0%298.1K after5 lots
Jul 1, 2021 (view filing)Jun 29-Jul 12 daysPrasad SuyashCMO and Head of R&DSSale−79.0K$22.63−$1.79M−11.7%593.6K after7 lots