Vesselon
Norwalk, US · Founded 2012 · Delaware corporation
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VesselOn is a drug development company using a platform to create enhanced versions of monoclonal antibodies, small molecules, cytokines, proteins, and other therapeutic conjugates, with initial focus on improving anti-PD-1 cancer drugs such as Keytruda. It works in the biopharmaceutical and oncology space to produce proprietary drug candidates.
Founders & leadership
RL

Rhodemann LiExecutive
CT
Clayton T LarsenPresident and Chief Executive Officer; Director
CL

Clay LarsenPresident and Chief Executive Officer; Director
Board
KK
Kevin KimberlinBoard director
PS
Paul S. Latchford, Jr.Board director
JR
Jurgen RathsBoard director
JC
Jon C SerbousekBoard director
Reported raises · per SEC filings
Form D private placements$1.4M disclosed across 4 rounds · 2014–2016
▶$250KraisedAug 2016 · 3 investors · BiotechnologyRule 506(b)
▶$250KraisedAug 2016 · 3 investors · Biotechnology
Rule 506(b)Officers, directors & promoters on the filing
- Rhodemann LiExecutive Officer, Director
- Jon SerbousekDirector
- Paul LatchfordDirector
- Jurgen RathsDirector
- Clay LarsenExecutive Officer, Director
- Offering amount
- $1M
- Amount sold
- $250K
- Minimum investment
- $25K
- Proceeds to insiders
- $100K
- First sale
- Mar 2016
- Incorporated
- Corporation, Delaware, 2012
- Federal exemptions
- 06b
▶$75KraisedJul 2016 · 1 investors · BiotechnologyRule 506(b)
▶$75KraisedJul 2016 · 1 investors · Biotechnology
Rule 506(b)Officers, directors & promoters on the filing
- Paul LatchfordDirector
- Jon SerbousekDirector
- Rhodemann LiExecutive Officer, Director
- Jurgen RathsDirector
- Clay LarsenExecutive Officer, Director
- Offering amount
- $150K
- Amount sold
- $75K
- Minimum investment
- $75K
- Proceeds to insiders
- $30K
- First sale
- Jun 2016
- Incorporated
- Corporation, Delaware, 2012
- Federal exemptions
- 06b
▶$1MraisedJun 2015 · 11 investors · BiotechnologyRule 506(c)
▶$1MraisedJun 2015 · 11 investors · Biotechnology
Rule 506(c)Officers, directors & promoters on the filing
- Paul S. Latchford, Jr.Director
- Jurgen RathsDirector
- Rhodemann LiExecutive Officer, Director
- Clayton T LarsenExecutive Officer, Director
- Jon C SerbousekDirector
- Offering amount
- $4M
- Amount sold
- $1M
- Minimum investment
- $50K
- Sales commissions
- $33.2K
- Proceeds to insiders
- $112K
- Placement agents
- Spencer Trask Ventures, Inc.
- First sale
- May 2015
- Incorporated
- Corporation, Delaware, 2012
- Federal exemptions
- 06c
▶$100KraisedJul 2014 · 1 investors · BiotechnologyRule 506(b)
▶$100KraisedJul 2014 · 1 investors · Biotechnology
Rule 506(b)Officers, directors & promoters on the filing
- Clay LarsenExecutive Officer, Director
- Rhodemann LiExecutive Officer, Director
- Kevin KimberlinDirector
- Offering amount
- $200K
- Amount sold
- $100K
- Minimum investment
- $50K
- First sale
- May 2014
- Incorporated
- Corporation, Delaware, 2012
- 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 Vesselon do?
- VesselOn is a drug development company using a platform to create enhanced versions of monoclonal antibodies, small molecules, cytokines, proteins, and other therapeutic conjugates, with initial focus on improving anti-PD-1 cancer drugs such as Keytruda. It works in the biopharmaceutical and oncology space to produce proprietary drug candidates.
- How much funding has Vesselon raised?
- Vesselon has disclosed $1.4M raised across 4 rounds.
- Where is Vesselon headquartered?
- Vesselon is headquartered in Norwalk, US.





