What stage does Waterline Ventures invest at?

Waterline Ventures invests at the Series A, Series B, Growth stages.

What sectors does Waterline Ventures focus on?

Waterline Ventures focuses on Digital Health, Healthtech.

Where is Waterline Ventures located?

Waterline Ventures is headquartered in Cambridge, US.

Waterline Ventures

Venture capital

Cambridge · Series A–Growth · 11 people tracked

Also known as Waterline Ventures NH · WATERLINE VENTURES, LLC

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Investment thesis

Waterline concentrates exclusively on healthcare, investing in early growth technology and service-enabled technology companies. The firm emphasizes deep domain knowledge built from extensive industry experience and a disciplined focus on the healthcare market. It aims to build lifetime relationships with entrepreneurs, backing founders across multiple ventures over their careers. Waterline also stresses capital efficiency, working with founders to craft the right financing plan for each company depending on how much capital the idea truly requires.

Invests inDigital Health HealthtechCambridgeUnited States

Source: firm website, verified Aug 3, 2026.

Stage

Series A–Growth

Cambridge, Massachusetts, US

Instruments

Equity

Founded

2014

Private fund assets

$256.9M

VC funds

Tracked investments

Team · 11 people

from the firm's website & public directories

Robbie Greenglass· Partner

Founder of Waterline Ventures in 2014. Previously VP of Business Development at Shields Health Solutions and an investor at Highland Capital Partners, where he helped launch Causeway Media Partners; earlier a healthcare investment banker at Oppenheimer & Co. and CIBC World Markets. Holds a B.A. from Brown and an M.B.A. from Harvard.

r•••@waterlineventures.comreveal

John Curtin· Partner

Joined Waterline in 2019 after working as an investment banker at AGC Partners on technology and services deals. Holds a B.A. in Economics and Chinese from Bowdoin College.

j•••@waterlineventures.comreveal

Bijan Salehezideh· Advisor· Washington, DC

Advisor and Investment Committee member; Managing Director and co-founder of NaviMed Capital and a former General Partner at Highland Capital Partners. Holds degrees from Princeton, Columbia, and Harvard.

Bob Higgins· Advisor

Co-chairman and advisor with over 30 years of venture and PE experience. Co-founder of Highland Capital Partners and founder of Causeway Media Partners. Harvard graduate and Senior Lecturer at Harvard Business School.

Dennis Chalke· Advisor

Advisor with over 30 years of healthcare finance and operations experience. Former SVP, CFO and Treasurer of Baystate Health. Holds an MBA in Finance from UMass Amherst.

Ellie Carson· Associate

e•••@waterlineventures.comreveal

Gil Addo· Operating Partner

Operating Partner and CEO/co-founder of RubiconMD, a Waterline portfolio company acquired by Oak Street Health. Holds a B.S. from Yale and an M.B.A. from Harvard.

Jack Shields· Advisor

Co-chairman and advisor; founder and CEO of Shields Health Solutions. Won the 2015 Ernst & Young Entrepreneur of the Year Award. Holds a B.A. from Notre Dame and a J.D. from Catholic University Law School.

Katharine French· Associate

Joined Waterline in 2025 after working on WHOOP's FP&A team and spending three years as a growth equity investor at Volition Capital. Holds a B.A. in Economics and Sociology from Bowdoin College.

Kathy Barry· CFO Advisor

Advisor and part-time CFO at Waterline. Previously CFO of Highland Capital Partners for 18 years and earlier CFO of Microsurge. Holds an M.S. in Accountancy from Bentley College.

Mike Baird· Operating Partner· Washington D.C.

Operating Partner and former CEO of Henry Schein One and President of Amwell. Previously co-founder and CEO of Avizia. Holds a B.S. from Brigham Young University and an M.B.A. from Kellogg.

What they invest in

from 5 of 6 portfolio companies

Digital Health ×4Healthtech ×4Mental Health ×2Advanced Manufacturing ×1FemTech ×1Medical Devices ×1SaaS ×1

HQs:United States×4

Investments · 6 tracked

founders shown can be your intro path

Sage ScienceSEC filingmedium confidence

Advanced ManufacturingBeverly, US

JONATHAN LOURIE(Executive Officer)JOHN D CURTIN(Director)GARY P MAGNANT(Director)PAUL MCEWAN(Director)MICHAEL FINNEY(Director)TODD BARBERA(Executive Officer, Director)

Board seatJohn Curtin· per SEC Form D · $2M raise · filed Apr 2016

1DocWaygenoahealthcare.comin

Genoa Healthcare operates specialty pharmacies that provide medication management and support services for patients with complex conditions like schizophrenia and other mental health disorders.

Digital HealthHealthtechMedical DevicesMental Health

evolvedMDevolvedmd.comin

evolvedMD integrates behavioral health services into primary care settings to improve access to mental health treatment.

Digital HealthHealthtechMental HealthPhoenix, US

Erik Osland(Founder)inSteve Biljan(Founder)Robert Greenglass(Director)Jason Slocum(Director)

BoardCarey Lai(Director)

Exitedrubiconmd.comin 𝕏

RubiconMD provides a configurable virtual consultation platform that connects primary care providers with board-certified specialists across multiple specialties to improve patient access to specialty care.

Digital HealthHealthtechSaaS

Carlos Reines(Founder)inGil Addo(Founder & CEO)

Manifold

Vertical AI for life sciences.

SimpliFedsimplifed.usin

SimpliFed provides a virtual pregnancy, postpartum, and baby feeding care program that connects new families with certified lactation consultants, nurse practitioners, and other maternal health experts.

Digital HealthFemTechHealthtech

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

What stage does Waterline Ventures invest at?: Waterline Ventures invests at the Series A, Series B, Growth stages.
What sectors does Waterline Ventures focus on?: Waterline Ventures focuses on Digital Health, Healthtech.
Where is Waterline Ventures located?: Waterline Ventures is headquartered in Cambridge, US.

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