# ImmusanT funding: rounds and investors > ImmusanT has raised $72M across 3 rounds since 2011. Investors include Vatera Healthcare Partners, Arch and Vatera. Every round with its source. Source: https://millionrounds.com/company/immusant (Millionrounds; every figure on the page links to its filing or article) United States · [Series C startup](https://millionrounds.com/companies) # Who invested in *ImmusanT* 3 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 **$72M** raised across 3 rounds since 2011, from 3 sources **$20M** Series A **$12M** Series B **$40M** Series C - **Latest round:** Series C, $40M Nov 2017 - **Step-up i:** 3.3× - **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. 2012 2013 2014 2015 2016 2017 **$20M** Series A **$12M** Series B **$40M** Series C - **First round:** Series A, $20M - **Biggest round:** $40M - **Usual gap between rounds:** 3 years ## The rounds - **Nov 2017** Series C **$40M** *2 new* [Arch](https://millionrounds.com/fund/arch) Vatera Reported by FinSMEs SEC filing: $20M sold, first sale Nov 2017 - **Dec 2014** Series B **$12M** *1 returning* [Vatera Healthcare Partners](https://millionrounds.com/fund/vatera-healthcare-partners) From a historical funding record SEC filing: $13M sold, first sale Dec 2014 - **Dec 2011** Series A **$20M** *1 new* [Vatera Healthcare Partners](https://millionrounds.com/fund/vatera-healthcare-partners) Reported by prnewswire.com ## Founders and team From ImmusanT's own website and the SEC filings it signed: 3 on the team. - **Kaela Goldstein** Senior Research Scientist - **One Kendall Square** Office Manager - **Leslie Williams** Executive Officer, Director i On the board, as filed i *Ceclia Gonzalo* *Kevin Ferro* *Steven Gillis* *Thomas Daniel* *Thomas Koestler* ## 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** 2011 **Series B** 2014 **Series C** 2017 [Vatera Healthcare Partners](https://millionrounds.com/fund/vatera-healthcare-partners) [Arch](https://millionrounds.com/fund/arch) Vatera ## Everyone who backed them [Vatera Healthcare Partners](https://millionrounds.com/fund/vatera-healthcare-partners) VC firm **2** rounds [Arch](https://millionrounds.com/fund/arch) Hedge fund **1** round Vatera no record of our own yet **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=immusant). ## Quick answers about ImmusanT ### Who invested in ImmusanT? ImmusanT's investors include Vatera Healthcare Partners, Arch and Vatera. ### How much has ImmusanT raised? ImmusanT has raised $72M across 3 rounds since 2011. ### When did ImmusanT last raise? ImmusanT's most recent round was a Series C of $40M in Nov 2017. ### What was ImmusanT's biggest round? Its most recent round, $40M in Nov 2017, is also its largest on record. ### Who backed ImmusanT first? ImmusanT's first round on record, in Dec 2011, was backed by Vatera Healthcare Partners. ### What stage is ImmusanT at? ImmusanT's latest named round is a Series C, in Nov 2017. ### Where is ImmusanT based? ImmusanT is based in the United States. ## Companies like ImmusanT 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