Abreos Biosciences
San Diego, US · Founded 2013 · Delaware corporation · 3 known investors
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Founders & leadership
Abreos Biosciences was founded in 2013 by Bradley Messmer.

Board
Investors · 3
How we know: Blackbird Ventures's portfolio page · Not right? Tell us
How we know: Keshif Ventures's portfolio page · Not right? Tell us
How we know: funding news · Not right? Tell us
Reported raises · per SEC filings
Form D private placements$7.5M disclosed across 4 rounds · 2015–2020
▶$5.6MraisedSep 2020 · 16 investors · OtherRule 506(b)
- Bradley MessmerExecutive Officer, Director
- Offering amount
- $5.6M
- Amount sold
- $5.6M
- First sale
- Sep 2020
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
▶$1.2MraisedJun 2017 · 10 investors · OtherRule 506(b)
- Bradley MessmerExecutive Officer, Director
- Offering amount
- $1.2M
- Amount sold
- $1.2M
- First sale
- Dec 2016
- Incorporated
- Corporation, Delaware, 2013
- Federal exemptions
- 06b
▶$475KraisedApr 2016 · 4 investors · OtherRule 506(b)
- Bradley MessmerExecutive Officer, Director
- Neil SenturiaDirector
- Offering amount
- $725K
- Amount sold
- $475K
- First sale
- Apr 2016
- Incorporated
- Corporation, Delaware, 2013
- Federal exemptions
- 06b
▶$240KraisedMar 2016 · 3 investors · OtherRule 506(b)
- Neil SenturiaDirector
- Bradley MessmerExecutive Officer, Director
- Offering amount
- $240K
- Amount sold
- $240K
- First sale
- Mar 2015
- Incorporated
- Corporation, Delaware, 2013
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
Non-dilutive funding · 11 SBIR/STTR awards
Federal grants — no equity taken| Agency | Phase | Year | Amount |
|---|---|---|---|
| National Institutes of Health (NIH)National Institutes of Health | Phase II | 2019 | $1.6M |
| National Institutes of Health (NIH)National Institutes of Health | Phase I | 2018 | $298.9K |
| National Institutes of Health (NIH)National Institutes of Health | Phase I | 2018 | $217.9K |
| National Institutes of Health (NIH)National Institutes of Health | Phase II | 2017 | $1.5M |
| National Institutes of Health (NIH)National Institutes of Health | Phase I | 2017 | $224.2K |
| National Institutes of Health (NIH)National Institutes of Health | Phase I | 2015 | $225K |
| National Institutes of Health (NIH)National Institutes of Health | Phase I | 2015 | $225K |
| National Institutes of Health (NIH)National Institutes of Health | Phase ISTTR | 2015 | $224.8K |
| National Institutes of Health (NIH)National Institutes of Health | Phase I | 2015 | $214.4K |
| National Institutes of Health (NIH)National Institutes of Health | Phase ISTTR | 2014 | $222.1K |
| National Institutes of Health (NIH)National Institutes of Health | Phase I | 2014 | $172.4K |
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
- Who founded Abreos Biosciences?
- Abreos Biosciences was founded by Bradley Messmer in 2013.
- Who are Abreos Biosciences's investors?
- Abreos Biosciences's investors include Blackbird Ventures, Keshif Ventures, Vertical Venture Partners.
- How much funding has Abreos Biosciences raised?
- Abreos Biosciences has disclosed $7.5M raised across 4 rounds.
- Where is Abreos Biosciences headquartered?
- Abreos Biosciences is headquartered in San Diego, US.

