Fundraising Fox

Ray Therapeutics

San Francisco, US · Founded 2021 · Delaware corporation · 11 known investors

Find your way into Ray Therapeutics

Restoring vision through optogenetics.

Biotech

Founders & leadership

Ray Therapeutics was founded in 2021 by Paul Bresge.

PB
Paul BresgeFounder
SA
Sean AinsworthExecutive

Board

TATiba Aynechi
Tiba AynechiinBoard directorGeneral Partner at Norwest Venture Partners
DK
Dmitry KuzminBoard directorPromoter at 4Bio Ventures
RC
Raymond CamahortBoard directorPrincipal at Novo Holdings
HC
Hannah ChangBoard director
GA
Gary AbramsBoard director

Investors · 11

MRL Ventures FundCambridge · $25M
4BIO Capitalreported · 2 sourcesLondon
4Bio VenturesreportedLondon
Deerfield Management Companyreported · 2 sourcesNew York
Franklin Templetonreported · 2 sourcesSan Mateo
Invusreported · 2 sourcesNew York
Janus Henderson Investorsreported · 2 sourcesLondon
Norwest Venture PartnersreportedMenlo Park · $10M – $30Mvia Tiba Aynechi · board
Novo HoldingsreportedCopenhagen · $1.1M – $54M

Also in the syndicate · 2

NorwestPlatanus

Funding

SEC filings, press & company announcements

$145M disclosed across 3 rounds · 2021–2026

▶$14MraisedMay 2023 · 13 investors · Biotechnology
Rule 506(b)
Officers, directors & promoters on the filing
  • Tiba AynechiDirector
  • Dmitry KuzminDirector
  • Sean AinsworthExecutive Officer, Director
  • Raymond CamahortDirector
  • Hannah ChangDirector
  • Gary AbramsDirector
  • Paul BresgeExecutive Officer, Director
Offering amount
$100M
Amount sold
$14M
First sale
May 2023
Incorporated
Corporation, Delaware, 2021
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$6MraisedApr 2022 · 15 investors · Biotechnology
Rule 506(b)
Officers, directors & promoters on the filing
  • Paul BresgeExecutive Officer, Director
  • Gary AbramsDirector
  • Dmitry KuzminDirector
  • Sean AinsworthExecutive Officer, Director
  • Cameron GallagherDirector
  • Andrew HowardExecutive Officer
Offering amount
$6M
Amount sold
$6M
First sale
May 2021
Incorporated
Corporation, California, 2021
Federal exemptions
06b
Full filing on SEC EDGAR ↗

Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.

In the news

Ray Therapeutics shines a light on $125M round targeting genetic eye therapyfiercebiotech.com · Apr 2026Ray Therapeutics Raises $125 Million Series B to Advance Optogenetic Vision Programs - TipRanks.comtipranks.com · Apr 2026Ray Therapeutics: $125 Million Series B Raised For Vision Restoration Therapiespulse2.com · Apr 2026Ray Therapeutics Announces Upsized and Oversubscribed $125 Million Series B Financing for Vision Restoration Treatmentsbusinesswire.com · Apr 2026Ray Therapeutics Raises $125M in Series B Fundingfinsmes.com · Apr 2026Ray Therapeutics Raises $100 Million for Gene Therapies to Treat Eye Disease - Global Genesglobalgenes.org · May 2023

Frequently asked questions

What does Ray Therapeutics do?
Restoring vision through optogenetics.
Who founded Ray Therapeutics?
Ray Therapeutics was founded by Paul Bresge in 2021.
Who are Ray Therapeutics's investors?
Ray Therapeutics's investors include MRL Ventures Fund, 4BIO Capital, 4Bio Ventures, Deerfield Management Company, Franklin Templeton, Invus, Janus Henderson Investors, Norwest Venture Partners and 1 more.
How much funding has Ray Therapeutics raised?
Ray Therapeutics has disclosed $145M raised across 3 rounds.
Where is Ray Therapeutics headquartered?
Ray Therapeutics is headquartered in San Francisco, US.