# Phosphorus funding: rounds and investors > Phosphorus has raised $10M across 2 rounds since 2016. Investors include FirstMark, Gaingels and TQ Ventures. Every round with its source. Source: https://millionrounds.com/company/phosphorus (Millionrounds; every figure on the page links to its filing or article) United States · [Venture startup](https://millionrounds.com/companies) # Who invested in *Phosphorus* 2 rounds we have observed, with the 3 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it. Biotech Healthcare Funding summary Updated 26 Oct 2026 **$10M** raised across 2 rounds since 2016, from 2 sources - **Latest round:** Venture Jan 2023 - **Biggest round:** $10M Series A · Jul 2016 - **Investors:** 3 See who backed them ## The funding story Each circle is a round, placed by date and sized by amount. The line above is the running total. 2017 2018 2019 2020 2021 2022 2023 **$10M** Series A **?** Venture - **First round:** Series A, $10M - **Biggest round:** $10M - **Between rounds:** 6.4 years ## The rounds - **Jan 2023** Venture **Amount undisclosed** *2 new* *1 returning* [Gaingels](https://millionrounds.com/fund/gaingels) [FirstMark](https://millionrounds.com/fund/firstmark) [TQ Ventures](https://millionrounds.com/fund/tq-ventures) Source recorded - **Jul 2016** Series A **$10M** *1 new* [FirstMark](https://millionrounds.com/fund/firstmark) Reported by FinSMEs ## Founders and team From the SEC filings it signed: 1 on the team. - **Alexander Bisignano** Executive Officer, Director i On the board, as filed i *John Goldsmith* *Mathias Turck* *Santiago 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. **Series A** 2016 **Venture** 2023 [FirstMark](https://millionrounds.com/fund/firstmark) [Gaingels](https://millionrounds.com/fund/gaingels) [TQ Ventures](https://millionrounds.com/fund/tq-ventures) ## Everyone who backed them [FirstMark](https://millionrounds.com/fund/firstmark) VC firm **2** rounds [Gaingels](https://millionrounds.com/fund/gaingels) Private equity **1** round [TQ Ventures](https://millionrounds.com/fund/tq-ventures) VC firm **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=phosphorus). ## 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. [Evolution Equity Partners](https://millionrounds.com/fund/evolution-equity-partners) VC firm Per its own site [SYN Ventures](https://millionrounds.com/fund/syn-ventures) VC firm Per its own site [Southeast Investor Group (SEIG)](https://millionrounds.com/fund/southeast-investor-group-seig) VC firm Per its own site [TQ Ventures](https://millionrounds.com/fund/tq-ventures-2) VC firm 2018, per its site ## Quick answers about Phosphorus ### Who invested in Phosphorus? Phosphorus's investors include FirstMark, Gaingels and TQ Ventures. ### 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. ## Companies like Phosphorus In the same sector, and raised in the last eighteen months. [**Star Therapeutics** $325M · Oct 2026](https://millionrounds.com/company/star-therapeutics)[**Promaxo** $106M · Oct 2026](https://millionrounds.com/company/promaxo)[**Prolific Machines** $105M · Oct 2026](https://millionrounds.com/company/prolific-machines)[**AI** $18M · Oct 2026](https://millionrounds.com/company/ai)[**Baba** $40M · Oct 2026](https://millionrounds.com/company/baba)[**IMIO** $19M · Oct 2026](https://millionrounds.com/company/imio) ## Find investors like these Search every investor by what they have actually funded, then narrow to your stage and market. Free. Open the investor searchOr these rounds in the app