Calviri
Phoenix, US · Founded 2015 · Delaware corporation · 1 known investors
Find your way into Calviri
57 people in our graph share verified history with the Calviri team — schools, employers, funds. One of them is your warm intro.
Calviri is a biotechnology company developing multi-cancer blood tests and cancer vaccines for dogs and humans, based on antigens said to be shared across tumors. Its first commercial product is StageOne Plus, a canine multi-cancer, multi-stage diagnostic test, and it is also running clinical trials of preventative and therapeutic canine cancer vaccines.
Founders & leadership
Calviri was founded in 2015 by Stephen Albert Johnston.


Board
Investors · 1
Funding
SEC filings, press & company announcements$19.7M disclosed across 8 rounds · 2018–2024
- $2.3MSeedApr 2020 · 3 sourcesSource ↗
▶$785KraisedNov 2024 · 10 investors · BiotechnologyRule 506(b)
- Kathryn SykesDirector
- Jeffrey Le BengerDirector
- Michael McCallisterDirector
- Stephen Albert JohnstonExecutive Officer, Director
- Jacque J. SokolovDirector
- Offering amount
- $5M
- Amount sold
- $785K
- Minimum investment
- $25K
- First sale
- Oct 2024
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
▶$150KraisedSep 2024 · 1 investors · BiotechnologyRule 506(b)
- Stephen Albert JohnstonExecutive Officer, Director
- Jacque J. SokolovDirector
- Michael McCallisterDirector
- Jeffrey Le BengerDirector
- Kathryn SykesDirector
- Offering amount
- $2M
- Amount sold
- $150K
- Minimum investment
- $25K
- First sale
- Sep 2024
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
▶$650.2KraisedOct 2023 · 3 investors · BiotechnologyRule 506(b)
- Stephen Albert JohnstonExecutive Officer, Director
- Jacque J. SokolovDirector
- Jeffrey Le BengerDirector
- Michael ChambersDirector
- Kathryn SykesDirector
- Michael McCallisterDirector
- Offering amount
- $30M
- Amount sold
- $650.2K
- Minimum investment
- $10K
- First sale
- Sep 2023
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
▶$11.1MraisedMay 2023 · 32 investors · BiotechnologyRule 506(b)
- Jacque J. SokolovDirector
- Michael McCallisterDirector
- Stephen Albert JohnstonExecutive Officer, Director
- Jeff Le BengerDirector
- Michael ChambersDirector
- Kathryn SykesDirector
- Offering amount
- $11.1M
- Amount sold
- $11.1M
- Minimum investment
- $25K
- First sale
- Oct 2021
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
▶$2.4MraisedOct 2020 · 5 investors · BiotechnologyRule 506(b)
- Kathryn SykesDirector
- Stephen Albert JohnstonExecutive Officer, Director
- Michael ChambersDirector
- Michael McCallisterDirector
- Jacque J. SokolovDirector
- Offering amount
- $5M
- Amount sold
- $2.4M
- Minimum investment
- $25K
- First sale
- Sep 2020
- Incorporated
- Corporation, Delaware, 2015
- Federal exemptions
- 06b
▶$430KraisedOct 2020 · 3 investors · BiotechnologyRule 506(b)
- Kathryn SykesDirector
- Stephen Albert JohnstonExecutive Officer, Director
- Jacque J. SokolovDirector
- Michael ChambersDirector
- Michael McCallisterDirector
- Offering amount
- $5M
- Amount sold
- $430K
- Minimum investment
- $25K
- First sale
- Sep 2020
- Incorporated
- Corporation, Delaware, 2015
- Federal exemptions
- 06b
▶$1.9MraisedMar 2020 · 4 investors · BiotechnologyRule 506(b)
- George PosteDirector
- Stephen Albert JohnstonExecutive Officer, Director
- Kathryn SykesDirector
- Neal WoodburyDirector
- Jacque J. SokolovDirector
- Anna BarkerDirector
- Offering amount
- $2.3M
- Amount sold
- $1.9M
- Minimum investment
- $25K
- First sale
- Dec 2018
- Incorporated
- Corporation, Delaware, 2015
- 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 Calviri for the same Google search keywords, organic and paid, via search-intersection analysis.
Non-dilutive funding · 1 SBIR/STTR award
Federal grants — no equity taken| Agency | Phase | Year | Amount |
|---|---|---|---|
| National Institutes of Health (NIH)National Institutes of Health | Phase I | 2019 | $299.6K |
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.
In the news
Frequently asked questions
- What does Calviri do?
- Calviri is a biotechnology company developing multi-cancer blood tests and cancer vaccines for dogs and humans, based on antigens said to be shared across tumors. Its first commercial product is StageOne Plus, a canine multi-cancer, multi-stage diagnostic test, and it is also running clinical trials of preventative and therapeutic canine cancer vaccines.
- Who founded Calviri?
- Calviri was founded by Stephen Albert Johnston in 2015.
- Who are Calviri's investors?
- Calviri's investors include Golden Seeds.
- How much funding has Calviri raised?
- Calviri has disclosed $19.7M raised across 8 rounds.
- Where is Calviri headquartered?
- Calviri is headquartered in Phoenix, US.





