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Cessation Therapeutics

San Jose, US · Founded 2022 · Delaware corporation

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Cessation Therapeutics develops immunotherapies, including monoclonal antibodies and vaccines, to treat substance use disorders and counter the effects of opioids such as fentanyl and heroin. The company works on medications aimed at preventing opioid overdose deaths.

Founders & leadership

Cessation Therapeutics was founded in 2022 by John D. Harkey, Jr..

JD
John D. Harkey, Jr.Co-Founder & Board Member
PBPaul Bremer
Paul BremerResearch and Development DirectorPaul Bremer is Research and Development Director at Cessation Therapeutics, where he works on immunotherapies including monoclonal antibodies and vaccines for substance use disorders. He specializes in designing and synthesizing bioactive small molecules and protein conjugates for therapeutic applications.
AB
Andrew BarrettBoard Member, former Chief Scientific Officer
JS
Jay ShepardNamed on SEC filing
MP
Mark PearsonCo-Founder & Board Member
JH
John HarkeyNamed on SEC filing
DG
David GenecovCo-Founder, Former Chief Medical Officer & Board Member
ER
Eric RasmussenNamed on SEC filing
JK
John KatsilometesController

Reported raises · per SEC filings

Form D private placements

$6.8M disclosed across 2 rounds · 2022–2024

▶$1MraisedApr 2024 · 2 investors · Biotechnology
Rule 506(b)
Officers, directors & promoters on the filing
  • Andrew BarrettExecutive Officer
  • Sharon TetlowDirector
  • John HarkeyDirector
  • Daniel FineDirector
  • Jay ShepardDirector
  • Mark PearsonDirector
Offering amount
$1M
Amount sold
$1M
First sale
Mar 2024
Incorporated
Corporation, Delaware, 2022
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$5.8MraisedMay 2022 · 31 investors · Biotechnology
Rule 506(c)
Officers, directors & promoters on the filing
  • Jay ShepardDirector
  • Mark PearsonExecutive Officer, Director
  • John HarkeyExecutive Officer, Director
  • David GenecovDirector
  • Eric RasmussenExecutive Officer
Offering amount
$10M
Amount sold
$5.8M
First sale
May 2022
Incorporated
Corporation, Delaware, 2022
Federal exemptions
06c
Full filing on SEC EDGAR ↗

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 Cessation Therapeutics do?
Cessation Therapeutics develops immunotherapies, including monoclonal antibodies and vaccines, to treat substance use disorders and counter the effects of opioids such as fentanyl and heroin. The company works on medications aimed at preventing opioid overdose deaths.
Who founded Cessation Therapeutics?
Cessation Therapeutics was founded by John D. Harkey, Jr. in 2022.
How much funding has Cessation Therapeutics raised?
Cessation Therapeutics has disclosed $6.8M raised across 2 rounds.
Where is Cessation Therapeutics headquartered?
Cessation Therapeutics is headquartered in San Jose, US.