Hapten Sciences
Memphis, US · Founded 2011 · Delaware corporation · 1 known investors
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Hapten Sciences develops early-stage pharmaceutical products focused on dermatological health, with its lead candidate PDC-APB in clinical development as a preventive immunotherapy for contact dermatitis caused by exposure to poisonous plants. The company targets healthcare providers and individuals affected by urushiol-related skin conditions.
Founders & leadership
Board

Investors · 1
Reported raises · per SEC filings
Form D private placements$5.8M disclosed across 6 of 8 rounds · 2013–2021
▶$3MofferedAug 2021 · PharmaceuticalsRule 506(b)
- Stephen L. BandakDirector
- Gary StevensonDirector
- Gary ProstermanExecutive Officer, Director
- Raymond J. HageExecutive Officer, Director
- Offering amount
- $3M
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
▶$886KraisedOct 2019 · 4 investors · PharmaceuticalsRule 506(b)
- Raymond J. HageExecutive Officer, Director
- Gary ProstermanExecutive Officer, Director
- Gary StevensonDirector
- Stephen L. BandakDirector
- Offering amount
- $1.5M
- Amount sold
- $886K
- First sale
- Oct 2019
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
▶$1.6MraisedSep 2018 · 5 investors · PharmaceuticalsRule 506(b)
- Raymond J. HageExecutive Officer, Director
- Stephen L. BandakDirector
- Gary StevensonDirector
- Gary ProstermanExecutive Officer, Director
- Offering amount
- $2.2M
- Amount sold
- $1.6M
- First sale
- Jan 2018
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
▶$1.2MraisedFeb 2017 · 8 investors · PharmaceuticalsRule 506(b)
- Raymond J. HageExecutive Officer, Director
- Joseph ZakrzewskiDirector
- Gary StevensonDirector
- Stephen L. BandakDirector
- Gary ProstermanExecutive Officer, Director
- Offering amount
- $1.2M
- Amount sold
- $1.2M
- First sale
- Feb 2017
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
▶$1.2MraisedJan 2016 · 6 investors · PharmaceuticalsRule 506(b)
- Gary StevensonDirector
- Joseph ZakrzewskiDirector
- Stephen I. BandakDirector
- Raymond J. HageExecutive Officer, Director, Promoter
- Gary ProstermanExecutive Officer, Director, Promoter
- Offering amount
- $1.7M
- Amount sold
- $1.2M
- First sale
- Sep 2015
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
▶$250KraisedApr 2015 · 7 investors · PharmaceuticalsRule 506(b)
- Stephen I. BandakDirector
- Gary ProstermanExecutive Officer, Director, Promoter
- Raymond J HageExecutive Officer, Director, Promoter
- Gary StevensonDirector
- Offering amount
- $250K
- Amount sold
- $250K
- Minimum investment
- $3.1K
- First sale
- Apr 2015
- Incorporated
- Corporation, Delaware, 2011
- Federal exemptions
- 06b
▶$100KofferedFeb 2015 · PharmaceuticalsRule 506(b)
- Gary ProstermanExecutive Officer, Director, Promoter
- Stephen I. BandakDirector
- Raymond J HageExecutive Officer, Director, Promoter
- Gary StevensonDirector
- Offering amount
- $100K
- Incorporated
- Corporation, Delaware, 2011
- Federal exemptions
- 06b
▶$625KraisedFeb 2015 · 7 investors · PharmaceuticalsRule 506(b)
- Gary ProstermanExecutive Officer, Director, Promoter
- Raymond J HageExecutive Officer, Director, Promoter
- Stephen I. BandakDirector
- Gary StevensonDirector
- Offering amount
- $1.2M
- Amount sold
- $625K
- Minimum investment
- $25K
- Placement agents
- NA
- First sale
- May 2013
- Incorporated
- Corporation, Delaware, 2011
- 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 Hapten Sciences do?
- Hapten Sciences develops early-stage pharmaceutical products focused on dermatological health, with its lead candidate PDC-APB in clinical development as a preventive immunotherapy for contact dermatitis caused by exposure to poisonous plants. The company targets healthcare providers and individuals affected by urushiol-related skin conditions.
- Who are Hapten Sciences's investors?
- Hapten Sciences's investors include MB Venture Partners.
- How much funding has Hapten Sciences raised?
- Hapten Sciences has disclosed $5.8M raised across 6 of its 8 known rounds.
- Where is Hapten Sciences headquartered?
- Hapten Sciences is headquartered in Memphis, US.
