EnsoData
Madison, US · Founded 2015 · Delaware corporation · 85 employees on LinkedIn · 8 known investors
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 Samuel Rusk, Christopher Fernandez, Samuel J. Rusk, and Christopher R. Fernandez.
SR
Samuel RuskCo-founder
CF
Christopher FernandezinCo-founder · Executive Chairman & Chief Research OfficerAdvisor at Colle Capital Partners
SJ
Samuel J. RuskCo-founder
CR
Christopher R. FernandezinCo-founder · Executive Chairman & Chief Research OfficerAdvisor at Colle Capital Partners
JM
Justin MortarainExecutive
MD
Matthew D DobereinerExecutive
BH
Broderick HensenExecutive
Board
SB
Scott ButtonBoard director
MG
FR
Frederick RobertsonBoard director
JR
John RondoniBoard director
Investors · 8
Colle Capital PartnersNew York · $500K – $2M
gener8torBeloit
Great North VenturesMaple Grove
HealthX VenturesMadisonvia Mark Bakken · board
Necessary VenturesSan Francisco · $1M – $2M
Questa CapitalSan Francisco · $15M – $40M
Supermoon CapitalSan Francisco · $150K – $2.5M
Zetta Venture PartnersreportedSan Francisco · $1M – $5Mvia Mark Gorenberg · board
Reported raises · per SEC filings
Form D private placements$50.7M disclosed across 5 rounds · 2016–2025
▶$20MraisedJun 2025 · 7 investors · Other Health CareRule 506(b)
▶$20MraisedJun 2025 · 7 investors · Other Health Care
Rule 506(b)Officers, directors & promoters on the filing
- 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)
▶$20MraisedMay 2022 · 11 investors · Other Health Care
Rule 506(b)Officers, directors & promoters on the filing
- 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)
▶$9MraisedMay 2020 · 15 investors · Other Health Care
Rule 506(b)Officers, directors & promoters on the filing
- 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)
▶$1.5MraisedMar 2018 · 16 investors · Other Technology
Rule 506(b)Officers, directors & promoters on the filing
- 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)
▶$275KraisedApr 2016 · 2 investors · Other Technology
Rule 506(b)Officers, directors & promoters on the filing
- 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.
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 Samuel Rusk, Christopher Fernandez, Samuel J. Rusk, Christopher R. Fernandez 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, Zetta Venture Partners.
- How much funding has EnsoData raised?
- EnsoData has disclosed $50.7M raised across 5 rounds.
- Where is EnsoData headquartered?
- EnsoData is headquartered in Madison, US.