Fundraising Fox
EnsoData
Madison, US · Founded 2015 · Delaware corporation · 85 employees on LinkedIn · 17 known investors
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Enso Data provides AI-powered analysis of physiological waveforms, particularly sleep studies, to enable clinical diagnosis and patient monitoring. The platform serves clinicians in sleep medicine and related specialties by automating interpretation of medical signals to support proactive patient intervention.
Founders & leadership
EnsoData was founded in 2015 by Christopher Fernandez, Sam Rusk, and Nick Glattard.
Board
Investors · 17
How we know: Colle Capital Partners's portfolio page · board seat on SEC Form D · dreamit.com · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: Great North Ventures's portfolio page · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: HealthX Ventures's portfolio page · board seat on SEC Form D · dreamit.com · the VCSheet dataset · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: dreamit.com · the VCSheet dataset · Not right? Tell us
How we know: Questa Capital's portfolio page · sleepworldmagazine.com · Not right? Tell us
How we know: sleepworldmagazine.com · the VCSheet dataset · Not right? Tell us
How we know: a partner's Signal profile · Not right? Tell us
How we know: open dataset · 5k.vc investor directory · Not right? Tell us
How we know: open dataset · 5k.vc investor directory · Not right? Tell us
How we know: a partner's Signal profile · board seat on SEC Form D · sleepworldmagazine.com · Not right? Tell us
Also in the syndicate · 3
Funding
SEC filings, press & company announcements$50.7M disclosed across 5 of 6 rounds · 2016–2026
- Undisclosed amountSeries AJun 2026
Venture Investors (lead), Zetta Venture Partners (lead), Colle Capital, Dreamit Ventures, HealthX Ventures, Necessary Ventures, SleepScore Ventures, Sternhill Associates
Source ↗
▶$20MraisedJun 2025 · 7 investors · Other Health CareRule 506(b)
- Justin MortaraExecutive Officer, Director
- Samuel RuskDirector
- Frederick RobertsonDirector
- Scott ButtonDirector
- Matthew D DobereinerExecutive Officer
- John RondoniDirector
- Christopher FernandezExecutive Officer, Director
- Broderick HensenExecutive Officer
- Mark GorenbergDirector
- Offering amount
- $20M
- Amount sold
- $20M
- First sale
- Jun 2025
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
▶$20MraisedMay 2022 · 11 investors · Other Health CareRule 506(b)
- Justin MortaraDirector
- Mark BakkenDirector
- Broderick HensenExecutive Officer
- Scott ButtonDirector
- Samuel RuskExecutive Officer, Director
- Mark GorenbergDirector
- Christopher FernandezExecutive Officer, Director
- Frederick A. RobertsonDirector
- John RondoniDirector
- Offering amount
- $20M
- Amount sold
- $20M
- First sale
- Apr 2022
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
▶$9MraisedMay 2020 · 15 investors · Other Health CareRule 506(b)
- Samuel James RuskExecutive Officer, Director
- Victoria GraceDirector
- Christopher Robert FernandezExecutive Officer, Director
- Frederick A. RobertsonDirector
- Mark BakkenDirector
- Offering amount
- $9M
- Amount sold
- $9M
- First sale
- May 2020
- Incorporated
- Corporation, Delaware, 2015
- Federal exemptions
- 06b
▶$1.5MraisedMar 2018 · 16 investors · Other TechnologyRule 506(b)
- Christopher Robert FernandezExecutive Officer, Director
- Ziad EssaDirector
- Samuel James RuskExecutive Officer, Director
- Mark BakkenDirector
- Offering amount
- $1.5M
- Amount sold
- $1.5M
- First sale
- Dec 2017
- Incorporated
- Corporation, Delaware, 2015
- Federal exemptions
- 06b
▶$275KraisedApr 2016 · 2 investors · Other TechnologyRule 506(b)
- Samuel J. RuskExecutive Officer, Director
- Christopher R. FernandezExecutive Officer, Director
- Offering amount
- $550K
- Amount sold
- $275K
- First sale
- Apr 2016
- Incorporated
- Corporation, Delaware, 2015
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
Founder mafia
4 people who came through EnsoData went on to found or lead other companies.
In the news
Frequently asked questions
- What does EnsoData do?
- Enso Data provides AI-powered analysis of physiological waveforms, particularly sleep studies, to enable clinical diagnosis and patient monitoring. The platform serves clinicians in sleep medicine and related specialties by automating interpretation of medical signals to support proactive patient intervention.
- Who founded EnsoData?
- EnsoData was founded by Christopher Fernandez, Sam Rusk, Nick Glattard in 2015.
- Who are EnsoData's investors?
- EnsoData's investors include Colle Capital Partners, gener8tor, Great North Ventures, HealthX Ventures, Necessary Ventures, Questa Capital, Supermoon Capital, Baird Capital and 6 more.
- How much funding has EnsoData raised?
- EnsoData has disclosed $50.7M raised across 5 of its 6 known rounds.
- Where is EnsoData headquartered?
- EnsoData is headquartered in Madison, US.