# Folio Photonics funding: rounds and investors > Folio Photonics has raised $17M across 3 rounds since 2019. Investors include Refinery Ventures, National Science Foundation and Capital One. Source: https://millionrounds.com/company/folio-photonics (Millionrounds; every figure on the page links to its filing or article) United States · [Venture startup](https://millionrounds.com/companies) # Who invested in *Folio Photonics* 3 rounds we have observed, with the 4 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. Big Data & Analytics Raised 6 months ago Funding summary Updated 26 Oct 2026 **$17M** raised across 3 rounds since 2019, from 3 sources **$8.0M** Seed **$2.6M** Venture **$6.0M** Round - **Latest round:** Round, $6.0M Apr 2026 - **Biggest round:** $8.0M Seed · May 2019 - **Step-up i:** 2.3× - **Investors:** 4 (1 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. 2019 2020 2021 2022 2023 2024 2025 2026 **$8.0M** Seed **$2.6M** Venture **$6.0M** Round - **First round:** Seed, $8.0M - **Biggest round:** $8.0M - **Usual gap between rounds:** 6.7 years ## The rounds - **Apr 2026** Round **$6.0M** No investor was named in the report. Filed with the SEC (Form D); no report of this raise yet SEC filing: $6.0M sold, first sale Apr 2026 - **Feb 2026** Venture **$2.6M** *1 new* [National Science Foundation](https://millionrounds.com/fund/nsf-small-business-innovation-research-small-business-techno) Source recorded SEC filing: $2.6M sold, first sale Aug 2025 - **May 2019** Seed **$8.0M** *3 new* [Refinery Ventures](https://millionrounds.com/fund/refinery-ventures) Lead [Capital One](https://millionrounds.com/fund/capital-one) Pavey Reported by FinSMEs SEC filing: $1.0M sold, first sale Jan 2019 ## Founders and team From Folio Photonics's own website: 8 on the team. - **Steven Santamaria** CEO - **Greg Kittilson** CTO - **Kevin Gwinnup** CFO - **Dennis Rubsam** VP of Systems and Drive Development - **Mark Roberts** Head of Media Test - **Kevin M. Mathis** Director of Optical Media & Polymer Engineering - **Linda Wisehart** Engineering Program & Business Manager - **Maria Anzola** Controller ## 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. **Seed** 2019 **Venture** 2026 **Round** 2026 [Refinery Ventures](https://millionrounds.com/fund/refinery-ventures) L [National Science Foundation](https://millionrounds.com/fund/nsf-small-business-innovation-research-small-business-techno) [Capital One](https://millionrounds.com/fund/capital-one) Pavey ## Everyone who backed them [Refinery Ventures](https://millionrounds.com/fund/refinery-ventures) VC firm **1** round, led 1 [National Science Foundation](https://millionrounds.com/fund/nsf-small-business-innovation-research-small-business-techno) Government **1** round [Capital One](https://millionrounds.com/fund/capital-one) VC firm **1** round Pavey 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=folio-photonics). ## Also claim to have backed them These 2 firms list Folio Photonics 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. [Material Impact](https://millionrounds.com/fund/material-impact) VC firm Per its own site [The O.H.I.O. Fund](https://millionrounds.com/fund/the-o-h-i-o-fund) Private credit Per its own site ## Quick answers about Folio Photonics ### Who invested in Folio Photonics? Folio Photonics's investors include Refinery Ventures, National Science Foundation, Capital One and Pavey. ### How much has Folio Photonics raised? Folio Photonics has raised $17M across 3 rounds since 2019. ### When did Folio Photonics last raise? Folio Photonics's most recent round, $6.0M, was in Apr 2026. ### What was Folio Photonics's biggest round? Folio Photonics's largest round on record is $8.0M (Seed), in May 2019, led by Refinery Ventures. ### Who backed Folio Photonics first? Folio Photonics's first round on record, in May 2019, was backed by Refinery Ventures, Capital One and Pavey. ### What stage is Folio Photonics at? Folio Photonics's latest named round is a Venture, in Feb 2026. ### Where is Folio Photonics based? Folio Photonics is based in the United States. ### Who led Folio Photonics's rounds? Refinery Ventures led the Seed in 2019. ## Companies like Folio Photonics In the same sector, and raised in the last eighteen months. 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