Fundraising FoxWinter Street Ventures
Venture capitalActively deployingBoston · Seed–Series A · 6 people tracked
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Investment thesis
Winter Street Ventures focuses on healthcare innovation that scales for real-world impact, partnering with entrepreneurs building transformative, tech-enabled healthcare solutions. The firm draws on extensive strategic relationships and operating experience with health plans and health systems to identify gaps and challenges in the healthcare ecosystem. It aims to improve outcomes for patients and their families while delivering strong returns for investors, backing not only companies but the people and passion behind them.
Source: firm website, verified Oct 10, 2026.
Team · 6 people
from the firm's website & public directories
What they invest in
from 4 of 6 portfolio companiesHealthtech ×4Consumer ×1Digital Health ×1Impact & Social Good ×1Mental Health ×1SaaS ×1
HQs:United States×3
Investments · 6 tracked
founders shown can be your intro pathBy year:2023 · 22020 · 13 dated
Cityblock provides primary care and health services focused on making healthcare accessible as a basic right, particularly serving underserved and marginalized communities with an emphasis on trust-based, inclusive care.
Digital HealthHealthtechImpact & Social GoodMental HealthBrooklyn, US
Iyah Romm(Founder)Toyin Ajayi(Founder)inMat Balez(Founder)inSusan Brown(Executive Officer)Bay Gross(Founder)
BoardAndy Slavitt(Director)in
Co-investors8VCEcho Health VenturesGeneral CatalystKinnevikLifeforce CapitalMaverick Ventures+11 more
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Thrive Mobile provides low-cost wireless plans through the federal Lifeline subsidy program, powered by SafetyNet Wireless, targeting low-income consumers with integrated health resources and personal assistant support.
HealthtechNashville, US
John Anderson(Executive Officer, Director)in
BoardNavid Farzad(Director)William H. Frist(Director)inVijay Patel(Director)in
Co-investorsCity LightCVS Health VenturesFrist Cressey VenturesSamsung Next
Thrive Mobile provides affordable wireless plans through the Lifeline program, powered by SafetyNet Wireless, with plans starting at $0/month and integrated health resources for low-income users.
ConsumerHealthtechSaaS
Co-investors25MadisonPrimetime PartnersCVS Health VenturesFrist Cressey Ventures
Other
Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.
LifePod SolutionsinstEDLynx
Rows marked “SEC filing” are inferred from directors named on the company's SEC Form D — public regulatory data, not a portfolio list published by the firm.
Frequently asked questions
- How many investments has Winter Street Ventures made?
- Winter Street Ventures has 6 tracked investments.
- What stage does Winter Street Ventures invest at?
- Winter Street Ventures invests at the Seed, Series A stages.
- What sectors does Winter Street Ventures focus on?
- Winter Street Ventures focuses on Digital Health, Healthtech.
- Where is Winter Street Ventures located?
- Winter Street Ventures is headquartered in Boston, US.
- Who does Winter Street Ventures co-invest with?
- Winter Street Ventures most often shares deals with 8VC, Echo Health Ventures, General Catalyst, among 14 tracked co-investors.
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