Io Therapeutics
Spring, US · Founded 2010 · Texas corporation
Io Therapeutics develops small molecule retinoid drugs, including IRX4204 and IRX5183, as potential treatments for oncology, neurologic, autoimmune, and dermatologic conditions such as psoriasis. It is a biopharmaceutical company focused on clinical-stage therapeutic product development.
Founders & leadership
Io Therapeutics was founded in 2010 by Roshantha A. Chandraratna and Rosh Chandraratna.
Board
Reported raises · per SEC filings
Form D private placements$4.6M disclosed across 2 rounds · 2013–2023
▶$4.2MraisedAug 2023 · 19 investors · BiotechnologyRule 506(b)
- Sharon LewExecutive Officer
- Sahani ChandraratnaDirector
- Vidyasagar VuligondaExecutive Officer
- Martin SandersExecutive Officer
- Offering amount
- $4.2M
- Amount sold
- $4.2M
- First sale
- Feb 2023
- Incorporated
- Corporation, Texas
- Federal exemptions
- 06b
▶$443.5KraisedJan 2014 · 4 investors · BiotechnologyRule 506(b)
- Scott ThacherDirector
- Martin E. SandersExecutive Officer, Director
- Roshantha A. ChandraratnaExecutive Officer, Director
- Offering amount
- $1M
- Amount sold
- $443.5K
- First sale
- Dec 2013
- Incorporated
- Corporation, California, 2010
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
Competitors · 5
by search overlapCompanies competing with Io Therapeutics for the same Google search keywords, organic and paid, via search-intersection analysis.
Non-dilutive funding · 2 SBIR/STTR awards
Federal grants — no equity taken| Agency | Phase | Year | Amount |
|---|---|---|---|
| National Institutes of Health (NIH)National Institutes of Health | Phase II | 2016 | $1.9M |
| National Institutes of Health (NIH)National Institutes of Health | Phase I | 2014 | $225K |
Source: SBIR.gov award data (U.S. Small Business Administration). SBIR/STTR awards are competitive federal R&D grants and contracts — non-dilutive capital alongside any venture rounds above.
Frequently asked questions
- What does Io Therapeutics do?
- Io Therapeutics develops small molecule retinoid drugs, including IRX4204 and IRX5183, as potential treatments for oncology, neurologic, autoimmune, and dermatologic conditions such as psoriasis. It is a biopharmaceutical company focused on clinical-stage therapeutic product development.
- Who founded Io Therapeutics?
- Io Therapeutics was founded by Roshantha A. Chandraratna, Rosh Chandraratna in 2010.
- How much funding has Io Therapeutics raised?
- Io Therapeutics has disclosed $4.6M raised across 2 rounds.
- Where is Io Therapeutics headquartered?
- Io Therapeutics is headquartered in Spring, US.

