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Taysha Gene Therapies
NASDAQ: TSHATexas, US · Founded 2019 · Delaware corporation · 134 employees on LinkedIn · 7 known investors
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Taysha Gene Therapies develops and commercializes gene therapies for monogenic diseases of the central nervous system, serving patients with rare and larger CNS conditions. Its lead clinical program targets Rett syndrome, alongside a broader pipeline of CNS programs.
Founders & leadership
Taysha Gene Therapies was founded in 2019 by R.A. Session II.
RS
R.A. Session IIFounder & Member Board of Directors2020–2023R.A. Session II co-founded Taysha Gene Therapies and served as its CEO and president. He has over 20 years of experience in life sciences, including prior roles as Chief Business Officer at BridgeBio's gene therapy subsidiaries and Senior Vice President of Corporate Strategy and Business Development at AveXis.
SP
Sean P. NolanChief Executive OfficerNolan previously led AveXis Inc. as President and CEO from 2015 to 2018, and held senior roles including Chief Business Officer at InterMune, Chief Commercial Officer at Reata Pharmaceuticals, and President of Lundbeck Inc., the company's US affiliate formerly known as Ovation Pharmaceuticals. His earlier work at Lundbeck spanned product development, global project management, and commercial integration following the Ovation acquisition.
Board
PB
Investors · 7
GV (Google Ventures)listed by GV (Google Ventures)Mountain View · $250K – $50M
How we know: GV (Google Ventures)'s portfolio page · open dataset · 5k.vc investor directory · Not right? Tell us
BairdreportedMilwaukee
How we know: allsci.com · Not right? Tell us
Goldman SachsreportedNew York
How we know: allsci.com · Not right? Tell us
JefferiesreportedNew York
How we know: allsci.com · Not right? Tell us
Also in the syndicate · 2
CantorPiper Sandler
Funding
SEC filings, press & company announcements$494M disclosed across 5 of 6 rounds · 2020–2026
- $200MraisedJun 2026 · 2 sources
Baird (lead), Cantor, Goldman Sachs & Co. LLC, Jefferies, Piper Sandler
Source ↗
▶$150MraisedAug 2023 · 42 investors · BiotechnologyRule 506(b)
▶$150MraisedAug 2023 · 42 investors · Biotechnology
Rule 506(b)Officers, directors & promoters on the filing
- Phillip DonenbergDirector
- Sean P. NolanExecutive Officer, Director
- Laura Sepp-LorenzinoDirector
- Sean StalfortDirector
- Kamran AlamExecutive Officer
- Kathleen ReapeDirector
- Sukumar NagendranExecutive Officer, Director
- Offering amount
- $150M
- Amount sold
- $150M
- Finders' fees
- $9M
- Placement agents
- Jefferies LLC
- First sale
- Aug 2023
- Incorporated
- Corporation, Delaware, 2019
- Federal exemptions
- 06b
▶$30MraisedNov 2022 · 1 investors · BiotechnologyRule 506(b)
▶$30MraisedNov 2022 · 1 investors · Biotechnology
Rule 506(b)Officers, directors & promoters on the filing
- Laura Sepp-LorenzinoDirector
- RA Session IIExecutive Officer, Director
- Kathleen ReapeDirector
- Kamran AlamExecutive Officer
- Phillip B. DonenbergDirector
- Paul B. ManningDirector
- Sean P. NolanDirector
- Suyash PrasadExecutive Officer
- Sukumar NagendranDirector
- Offering amount
- $30M
- Amount sold
- $30M
- First sale
- Oct 2022
- Incorporated
- Corporation, Delaware, 2020
- Federal exemptions
- 06b
▶$96MraisedAug 2020 · 26 investors · BiotechnologyRule 506(b)
▶$96MraisedAug 2020 · 26 investors · Biotechnology
Rule 506(b)Officers, directors & promoters on the filing
- Sean NolanDirector
- Sukumar NagendranDirector
- Suyash PrasadExecutive Officer
- Kamran AlamExecutive Officer
- R. A. Session IIExecutive Officer, Director
- Paul B. ManningDirector
- Offering amount
- $96M
- Amount sold
- $96M
- First sale
- Jul 2020
- Incorporated
- Corporation, Delaware, 2020
- Federal exemptions
- 06b
▶$18MraisedMay 2020 · 9 investors · BiotechnologyRule 506(b)
▶$18MraisedMay 2020 · 9 investors · Biotechnology
Rule 506(b)Officers, directors & promoters on the filing
- R.A. Session IIExecutive Officer, Director
- Paul B. ManningDirector
- Sean NolanDirector
- Offering amount
- $30M
- Amount sold
- $18M
- Finders' fees
- $435K
- Placement agents
- Chardon Capital Markets LLC
- First sale
- Mar 2020
- Incorporated
- Corporation, Delaware, 2019
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
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Frequently asked questions
- What does Taysha Gene Therapies do?
- Taysha Gene Therapies develops and commercializes gene therapies for monogenic diseases of the central nervous system, serving patients with rare and larger CNS conditions. Its lead clinical program targets Rett syndrome, alongside a broader pipeline of CNS programs.
- Who founded Taysha Gene Therapies?
- Taysha Gene Therapies was founded by R.A. Session II in 2019.
- Who are Taysha Gene Therapies's investors?
- Taysha Gene Therapies's investors include GV (Google Ventures), Baird, Goldman Sachs, Jefferies, PBM Capital.
- How much funding has Taysha Gene Therapies raised?
- Taysha Gene Therapies has disclosed $494M raised across 5 of its 6 known rounds.
- Where is Taysha Gene Therapies headquartered?
- Taysha Gene Therapies is headquartered in Texas, US.