# Contraline funding: rounds and investors > Contraline has raised $100M across 2 rounds since 2022. Investors include Y Combinator, Alumni Ventures and Founders Fund. Every round with its source. Source: https://millionrounds.com/company/contraline (Millionrounds; every figure on the page links to its filing or article) United States · [Series B startup](https://millionrounds.com/companies) # Who invested in *Contraline* 2 rounds we have observed, with the 10 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 Femtech Healthcare Raised 5 months ago Follow Contraline and see its new rounds in your feed. [Start following](https://millionrounds.com/login?join=1&why=follow&next=%2Fcompany%2Fcontraline) Funding summary Updated 5 Nov 2026 **$100M** raised across 2 rounds since 2022, from 3 sources **$7.2M** Series A **$93M** Series B - **Latest round:** Series B, $93M Jun 2026 - **Led by:** RA Capital Management and BVF Partners and 1 more - **Step-up i:** 12.8× - **Investors:** 10 (3 led) 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. 2023 2024 2025 2026 **$7.2M** Series A **$93M** Series B - **First round:** Series A, $7.2M - **Biggest round:** $93M - **Between rounds:** 3.6 years ## The rounds - **Jun 2026** Series B **$93M** *6 new* *4 returning* [RA Capital Management](https://millionrounds.com/fund/ra-capital-management) Lead [BVF Partners](https://millionrounds.com/fund/bvf-partners) Lead [BVF Partners L.P](https://millionrounds.com/fund/bvf-partners-l-p) Lead [Y Combinator](https://millionrounds.com/fund/y-combinator) [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) [Founders Fund](https://millionrounds.com/fund/founders-fund) [Google Ventures](https://millionrounds.com/fund/gv) [Abstract Ventures](https://millionrounds.com/fund/abstract) [Invus](https://millionrounds.com/fund/invus) [Lumira Ventures](https://millionrounds.com/fund/lumira-ventures) Reported by Ventureburn and 1 other SEC filing: $56M sold - **Nov 2022** Series A **$7.2M** *4 new* [Y Combinator](https://millionrounds.com/fund/y-combinator) [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) [Founders Fund](https://millionrounds.com/fund/founders-fund) [Abstract Ventures](https://millionrounds.com/fund/abstract) Source recorded ## Funding filed with regulators Contraline filed 2 raises, $63M in all. Filings say how much was sold and to how many investors; they never name the investors. - Jun 2026 **$56M** 77 investors of $116M offered SEC Form D - Mar 2021 **$7.2M** 22 investors options, securities on exercise of $7.5M offered SEC Form D ## Founders and team From Contraline's own website: 1 founder, 12 on the team. **Kevin Eisenfrats** Co-Founder and CEO - **Justin Mattice** Chief Commercial Officer - **Robert Goldman** VP, Global Clinical Operations - **Robert Greenleaf** VP, Quality and Operations - **Bethany Young PhD** Principal Engineer - **Charlie Bird** Controller - **Ella Stack** Clinical Trial Manager - **Katie Lloyd** Director of Operations - **Kyle Ripley** Operations Manager - **Laila Campbell** Associate Engineer - **Lindsey Ott** Director of Program Management - **Olivia Luu** R&D Engineer - **Ria Agrawal** R&D Engineer ## 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** 2022 **Series B** 2026 [Y Combinator](https://millionrounds.com/fund/y-combinator) [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) [Founders Fund](https://millionrounds.com/fund/founders-fund) [Abstract Ventures](https://millionrounds.com/fund/abstract) [RA Capital Management](https://millionrounds.com/fund/ra-capital-management) L [BVF Partners](https://millionrounds.com/fund/bvf-partners) L [BVF Partners L.P](https://millionrounds.com/fund/bvf-partners-l-p) L [Google Ventures](https://millionrounds.com/fund/gv) [Invus](https://millionrounds.com/fund/invus) [Lumira Ventures](https://millionrounds.com/fund/lumira-ventures) ## Everyone who backed them [Y Combinator](https://millionrounds.com/fund/y-combinator) Accelerator **2** rounds [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) VC firm **2** rounds [Founders Fund](https://millionrounds.com/fund/founders-fund) VC firm **2** rounds [Abstract Ventures](https://millionrounds.com/fund/abstract) VC firm **2** rounds [RA Capital Management](https://millionrounds.com/fund/ra-capital-management) Private equity **1** round, led 1 [BVF Partners](https://millionrounds.com/fund/bvf-partners) VC firm **1** round, led 1 [BVF Partners L.P](https://millionrounds.com/fund/bvf-partners-l-p) Growth equity **1** round, led 1 [Google Ventures](https://millionrounds.com/fund/gv) Corporate VC **1** round [Invus](https://millionrounds.com/fund/invus) Private equity **1** round [Lumira Ventures](https://millionrounds.com/fund/lumira-ventures) VC firm **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=contraline). ## Also claim to have backed them These 15 firms list Contraline 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. [Amboy Street Ventures](https://millionrounds.com/fund/amboy-street-ventures) VC firm Per its own site [MBX Capital](https://millionrounds.com/fund/mbx-capital) VC firm Per its own site [Convergent Ventures](https://millionrounds.com/fund/convergent-ventures) VC firm Per its own site [Charlottesville Angel Network](https://millionrounds.com/fund/charlottesville-angel-network) Angel network Per its own site [Aurum Venture Partners](https://millionrounds.com/fund/aurum-venture-partners) VC firm Per its own site [Beni VC](https://millionrounds.com/fund/beni-venture-capital) VC firm Per its own site [Dreamhub Ventures](https://millionrounds.com/fund/dreamhub-ventures) VC firm Per its own site [Flying Tiger Capital](https://millionrounds.com/fund/flying-tiger-capital) Family office Per its own site [Helium-3 Ventures](https://millionrounds.com/fund/helium-3-ventures) VC firm Per its own site [Myelin VC](https://millionrounds.com/fund/myelin-vc) VC firm Per its own site [Octant Ventures](https://millionrounds.com/fund/octant-ventures) VC firm Per its own site [Samsarik Capital](https://millionrounds.com/fund/samsarik-capital) VC firm Per its own site [VU Venture Partners](https://millionrounds.com/fund/vu-venture-partners) VC firm Per its own site [Warren Point Capital](https://millionrounds.com/fund/warren-point-capital) VC firm Per its own site [irrvrntVC](https://millionrounds.com/fund/irrvrntvc) VC firm Per its own site ## Quick answers about Contraline ### Who invested in Contraline? Contraline's investors include Y Combinator, Alumni Ventures, Founders Fund, Abstract Ventures and RA Capital Management, and 5 more on record. RA Capital Management led its latest round. ### How much has Contraline raised? Contraline has raised $100M across 2 rounds since 2022. ### When did Contraline last raise? Contraline's most recent round was a Series B of $93M in Jun 2026, led by RA Capital Management. ### What was Contraline's biggest round? Its most recent round, $93M in Jun 2026, is also its largest on record. ### Who backed Contraline first? Contraline's first round on record, in Nov 2022, was backed by Y Combinator, Alumni Ventures and Founders Fund and 1 others. ### What stage is Contraline at? Contraline's latest named round is a Series B, in Jun 2026. ### Where is Contraline based? Contraline is based in the United States. ### Who led Contraline's rounds? RA Capital Management led the Series B in 2026. ## Companies like Contraline In the same sector, and raised in the last eighteen months. [**Omni** $244M · Nov 2026](https://millionrounds.com/company/omni)[**GPN Vaccines** $10B · Nov 2026](https://millionrounds.com/company/gpn-vaccines)[**General Medicine** $152M · Nov 2026](https://millionrounds.com/company/general-medicine)[**Midstream Health** $27M · Oct 2026](https://millionrounds.com/company/midstream-health)[**SpendRule** $6.0M · Oct 2026](https://millionrounds.com/company/spendrule)[**Urologic Design** $1.2M · Oct 2026](https://millionrounds.com/company/urologic-design) ## 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