# Ambrx funding: rounds and investors > Ambrx has raised $55M across 2 rounds since 2009. Investors include Versant Ventures, 5AM Ventures and CMEA Ventures. Every round with its source. Source: https://millionrounds.com/company/ambrx (Millionrounds; every figure on the page links to its filing or article) United States · [Funded startup](https://millionrounds.com/companies) # Who invested in *Ambrx* 2 rounds we have observed, with the 9 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 **$55M** raised across 2 rounds since 2009, from 2 sources **$10M** Series D **$45M** Round - **Latest round:** Round, $45M Aug 2016 - **Step-up i:** 4.5× - **Investors:** 9 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. 2009 2010 2011 2012 2013 2014 2015 2016 **$10M** Series D **$45M** Round - **First round:** Series D, $10M - **Biggest round:** $45M - **Between rounds:** 7.3 years ## The rounds - **Aug 2016** Round **$45M** *2 new* [Apricot Capital](https://millionrounds.com/fund/apricot-capital) Northeast Securities Prosperity Reported by FinSMEs - **Apr 2009** Series D **$10M** *7 new* [Versant Ventures](https://millionrounds.com/fund/versant-ventures) [5AM Ventures](https://millionrounds.com/fund/5am-ventures) [CMEA Ventures](https://millionrounds.com/fund/cmea-capital) [Maverick Capital](https://millionrounds.com/fund/maverick-capital) [Aravis Ventures](https://millionrounds.com/fund/aravis-sa) [Tavistock Life Sciences](https://millionrounds.com/fund/tavistock-life-sciences) [Merck Serono Ventures](https://millionrounds.com/fund/merck-serono-ventures) Reported by onbiovc.com SEC filing: $10M sold, first sale Mar 2009 ## Founders and team From the SEC filings it signed: 6 on the team. - **Crispina Calsada** Executive Officer i - **Douglas W. Axelrod** Executive Officer i - **Ho Sung Cho** Executive Officer i - **John W. Wallen** Executive Officer i - **Kevin L. Eastwood** Executive Officer i - **Stephen W. Kaldor** Executive Officer, Director i On the board, as filed i *Allan Marchington* *August M. Watanabe* *David B. Singer* *John D. Diekman* *Peter G. Schultz* *Richard D. DiMarchi* *Shehan Dissanayake* ## 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 D** 2009 **Round** 2016 [Versant Ventures](https://millionrounds.com/fund/versant-ventures) [5AM Ventures](https://millionrounds.com/fund/5am-ventures) [CMEA Ventures](https://millionrounds.com/fund/cmea-capital) [Maverick Capital](https://millionrounds.com/fund/maverick-capital) [Aravis Ventures](https://millionrounds.com/fund/aravis-sa) [Tavistock Life Sciences](https://millionrounds.com/fund/tavistock-life-sciences) [Merck Serono Ventures](https://millionrounds.com/fund/merck-serono-ventures) [Apricot Capital](https://millionrounds.com/fund/apricot-capital) Northeast Securities Prosperity ## Everyone who backed them [Versant Ventures](https://millionrounds.com/fund/versant-ventures) VC firm **1** round [5AM Ventures](https://millionrounds.com/fund/5am-ventures) VC firm **1** round [CMEA Ventures](https://millionrounds.com/fund/cmea-capital) VC firm **1** round [Maverick Capital](https://millionrounds.com/fund/maverick-capital) VC firm **1** round [Aravis Ventures](https://millionrounds.com/fund/aravis-sa) Private equity **1** round [Tavistock Life Sciences](https://millionrounds.com/fund/tavistock-life-sciences) Family office **1** round [Merck Serono Ventures](https://millionrounds.com/fund/merck-serono-ventures) VC firm **1** round [Apricot Capital](https://millionrounds.com/fund/apricot-capital) Private equity **1** round Northeast Securities Prosperity 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=ambrx). ## Quick answers about Ambrx ### Who invested in Ambrx? Ambrx's investors include Versant Ventures, 5AM Ventures, CMEA Ventures, Maverick Capital and Aravis Ventures, and 4 more on record. ### How much has Ambrx raised? Ambrx has raised $55M across 2 rounds since 2009. ### When did Ambrx last raise? Ambrx's most recent round was an Undisclosed round of $45M in Aug 2016. ### What was Ambrx's biggest round? Its most recent round, $45M in Aug 2016, is also its largest on record. ### Who backed Ambrx first? Ambrx's first round on record, in Apr 2009, was backed by Versant Ventures, 5AM Ventures and CMEA Ventures and 4 others. ### What stage is Ambrx at? Ambrx's latest named round is an Undisclosed round, in Aug 2016. ### Where is Ambrx based? Ambrx is based in the United States. ## Companies like Ambrx 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