United States · 
Who invested in Folio Photonics?
Folio Photonics's investors include Refinery Ventures, National Science Foundation, Capital One and Pavey.
20192020202120222023202420252026
$8.0MSeed$2.6MVenture$6.0MRound
United States · Venture startup
Who invested in Folio Photonics
Funding summaryUpdated 26 Oct 2026
$17Mraised across 3 rounds since 2019, from 3 sources
$8.0MSeed$2.6MVenture$6.0MRound
- Latest round
- Round, $6.0MApr 2026
- Biggest round
- $8.0MSeed · May 2019
- Step-upi
- 2.3×
- Investors
- 4 (1 led)
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Seed, $8.0M May 2019
- Biggest round
- $8.0M Seed · May 2019
- Usual gap between rounds
- 6.7 years the median of 2
The rounds
- Apr 2026Round$6.0M
No investor was named in the report.
Filed with the SEC (Form D); no report of this raise yetSEC filing: $6.0M sold, first sale Apr 2026
- Feb 2026Venture$2.6M1 new
Source recordedSEC filing: $2.6M sold, first sale Aug 2025
- May 2019Seed$8.0M3 new
Refinery VenturesLead- Capital One
- Pavey
Reported by FinSMEsSEC filing: $1.0M sold, first sale Jan 2019
Founders and team
From Folio Photonics's own website: 8 on the team.
- Steven SantamariaCEO
- Greg KittilsonCTO
- Kevin GwinnupCFO
- Dennis RubsamVP of Systems and Drive Development
- Mark RobertsHead of Media Test
- Kevin M. MathisDirector of Optical Media & Polymer Engineering
- Linda WisehartEngineering Program & Business Manager
- Maria AnzolaController
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.
Everyone who backed them
Capital OneVC firm1round
Paveyno record of our own yet1round
Missing a round, or an investor who was in one? Tell us.
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.
Quick answers about Folio Photonics
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.
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