United States · 
Who invested in Phosphorus?
Phosphorus's investors include FirstMark, Gaingels and TQ Ventures.
2017201820192020202120222023
$10MSeries A?VentureUnited States · Venture startup
Who invested in Phosphorus
Funding summaryUpdated 26 Oct 2026
$10Mraised across 2 rounds since 2016, from 2 sources
- Latest round
- VentureJan 2023
- Biggest round
- $10MSeries A · Jul 2016
- Investors
- 3
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Series A, $10M Jul 2016
- Biggest round
- $10M Series A · Jul 2016
- Between rounds
- 6.4 years from the last two
The rounds
- Jan 2023
- Jul 2016
Founders and team
From the SEC filings it signed: 1 on the team.
- Alexander BisignanoExecutive Officer, Directori
On the board, as filediJohn GoldsmithMathias TurckSantiago Munne
Who was in which round
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
Everyone who backed them
Missing a round, or an investor who was in one? Tell us.
Also claim to have backed them
These 4 firms list Phosphorus as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above.
Quick answers about Phosphorus
How much has Phosphorus raised?
Phosphorus has raised $10M across 2 rounds since 2016. One round did not disclose an amount, so the total is a floor.
When did Phosphorus last raise?
Phosphorus's most recent round was a Venture in Jan 2023.
What was Phosphorus's biggest round?
Phosphorus's largest round on record is $10M (Series A), in Jul 2016.
Who backed Phosphorus first?
Phosphorus's first round on record, in Jul 2016, was backed by FirstMark.
What stage is Phosphorus at?
Phosphorus's latest named round is a Venture, in Jan 2023.
Where is Phosphorus based?
Phosphorus is based in the United States.
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