Rick Grinnell
InvestorManaging Partner at Glasswing Ventures · Board director at Loom Security · Board director at Lambent · Board director at Allure Security
Cambridge, Massachusetts
Writes $100K – $5M checks · typically $1.5M
Find your path to Rick
578 people in our graph share verified history with Rick — schools, employers, funds. One of them is your warm intro.
Deep NisharunlockedRick: together at Harvard Business School (1999–2000)
×7Rick: together at Massachusetts Institute of Technology
×4Rick: together at Harvard Business School
About
Rick Grinnell combines deep engineering expertise—co-creating video compression used by Zoom and FaceTime—with 20+ years investing in security and infrastructure, a unique AI-for-data security thesis, and MIT/Harvard ties.
Contact· self-published, not guessed
Likely email· guessed from name + firm domain, not firm-published
- r•••@glasswing.vcreveal70% confident
Invests in
AI & Machine LearningCybersecurityData & InfrastructureDeveloper ToolsEnterprise Software
Board director at Loom Security
Intro paths
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In turn, Rick can intro founders to Loom Security's investors below.
Loom Security's investors · 1
Board director at Lambent
Intro paths
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In turn, Rick can intro founders to Lambent's investors below.
Lambent's investors · 7
Co-founders at Lambent
JO
Joseph O'ConnorCo-founder
AL
Andrea LagesCo-founder & CEO of Lambent do Brasil
Board director at Allure Security
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In turn, Rick can intro founders to Allure Security's investors below.
Allure Security's investors · 5
Co-founders at Allure Security
SS
Salvatore StolfoExecutive Officer, Director
Experience
- Glasswing VenturesFounder and Managing Partnercurrent2016 — presentGreater Boston
- Realm.Security, IncBoard of Directorscurrent2024 — presentBoston, Massachusetts, United States
- Allure SecurityBoard Of Directorscurrent2017 — presentWaltham, MA
- TrustleBoard of Directorscurrent2022 — present
- LambentBoard Of Directorscurrent2018 — presentGreater Boston
- NametagInvestorcurrent2021 — presentSeattle
- Narrative I/OBoard of Directorscurrent2024 — presentNew York, New York, United States
- CeritasInvestorcurrent2022 — present
- Tidal CyberInvestorcurrent2022 — presentWashington DC-Baltimore Area
- Museum of Science, BostonMember of the Board of Advisorscurrent2011 — presentGreater Boston
- Slone Partners CybersecurityAdvisory Board Member2020 — 2024
- Terbium LabsBoard Of Directors2017 — 2021Washington DC-Baltimore Area
- CPX Security/Pwnie ExpressBoard Director2013 — 2021Boston, MA
- Big Brothers Big Sisters of Massachusetts BayBoard Director2011 — 2019Greater Boston
- TrackVia, Inc.Board Director2012 — 2019
- PrelertBoard Director2010 — 2016Framingham, MA
- Fairhaven Capital PartnersManaging Director2007 — 2016Cambridge, MA
- Resilient Systems, Inc.Board Director2010 — 2016Cambridge, MA
- VeloBit, Inc.Board Director2011 — 2013Greater Boston
- Equallogic StorageBoard Director2005 — 2008Nashua, NH
- TD Capital VenturesManaging Director2001 — 2007
- AderoContentBridge Marketing1999 — 2001Greater Boston
- ClearOne CommunicationsDirector of Marketing1997 — 1998
- PictureTelSenior Engineer/Senior Marketing Manager1993 — 1997
Skills & more
Strategy8Venture Capital44Start-ups51Go-to-market Strategy7Strategic Partnerships33Product Management11Entrepreneurship11Mergers1Mobile Devices3Business Development5SaaS8Enterprise Software13
Languages French
From Rick's professional profile.
Deals · 1
LambentBoard seat
via Glasswing Ventures · filed Apr 2026 · $12.5M raise
Attribution from SEC filings, press coverage, and firm rosters.
Other disclosed investments
Investor
Allure SecurityBase OperationsBlack KiteCraft.coCydelphiDataupiaIBM ResilientNoetic Cyberotto-jsPrelertPwnie ExpressRealm.SecuritySigma AutomateSmarthiveTerbium LabsTrackviaTrustleTwosenseVeloBit
Sources: SEC Form D filings · curated public sources.
Colleagues at Glasswing Ventures
Alexander Ashavsky
Managing Director, Data Science and Engineering at Deerfield Management Company
Ali Mahmoud
Principal at Glasswing Ventures
Ben Cary
Controller and Operations Director at Glasswing Ventures
Brittany Hernandez
Operations Manager at Glasswing Ventures
Dave Knox
Managing Partner at Vine Street Ventures
Ellen Rubin
Partner at Glasswing Ventures
James Massaquoi
Senior Investment Associate at Glasswing Ventures
Jessica Mullins Camburn
Chief Financial Officer at Glasswing Ventures
Network1
Investors connected to Rick in public investor directories — a warm-intro map.
Frequently asked questions
- Who is Rick Grinnell?
- Rick Grinnell combines deep engineering expertise—co-creating video compression used by Zoom and FaceTime—with 20+ years investing in security and infrastructure, a unique AI-for-data security thesis, and MIT/Harvard ties.
- Where does Rick Grinnell work?
- Rick Grinnell is Managing Partner at Glasswing Ventures and Board director at Loom Security and Board director at Lambent and Board director at Allure Security.
- What does Rick Grinnell invest in?
- Rick Grinnell invests in AI & Machine Learning, Cybersecurity, Data & Infrastructure, Developer Tools, Enterprise Software.
- What check size does Rick Grinnell write?
- Rick Grinnell typically writes checks of $100K – $5M.
- What boards does Rick Grinnell sit on?
- Rick Grinnell holds tracked board seats at Lambent.
- What companies has Rick Grinnell invested in?
- Investments tracked here include Allure Security, Base Operations, Black Kite, Craft.co, Cydelphi, Dataupia, IBM Resilient, Lambent, Noetic Cyber, otto-js, Prelert, Pwnie Express, and 8 more.
- Where did Rick Grinnell go to school?
- Rick Grinnell studied at Harvard Business School (MBA); Massachusetts Institute of Technology (S.M., Electrical Engineering and Computer Science); Massachusetts Institute of Technology (S.B., Electrical Engineering and Computer Science).
Same school
Also attended Harvard Business School2,000
Aileen LeeFounder & Managing Partner of Cowboy VenturesJim BreyerFounder & CEO of Breyer CapitalMike Maples JrCo-founding Partner at FloodgateNeeraj AgrawalGeneral Partner at Battery VenturesHristo BorisovCo-founder & CEO of PayhawkVictoria TreygerGeneral Partner at Felicis Ventures
+ 1,994 more
Also attended Massachusetts Institute of Technology2,000
Hemant TanejaCEO & Managing Director of General CatalystNat FriedmanCo-lead of Meta Superintelligence Labs; co-founder of NFDGBrad FeldCo-founder of Foundry and TechstarsMatt HuangCo-founder and Managing Partner at ParadigmDelian AsparouhovPartner at Founders Fund and co-founder of VardaDrew HoustonCo-founder & CEO of Dropbox
+ 1,994 more
Shared employers
Also worked at Realm.Security, Inc4
Also worked at Narrative I/O10
Sam ThompsonFounding Partner at Progress VenturesAdriaan Zur MuhlenManaging Partner at Progress VenturesJoe ApprendiGeneral Partner at Revel PartnersBob HowerCo-Founder and Partner at G20 VenturesVarun SridharPrincipal at Roo CapitalEric del BalsoFounder and General Partner at Kohala Ventures
+ 4 more
Also worked at Big Brothers Big Sisters of Massachusetts Bay3
Also worked at TrackVia, Inc.9
Brian WallaceManaging Partner at Access Venture PartnersKirk HollandManaging Partner at Access Venture PartnersTodd BengeVice President, Engineering at TrackviaJennifer PanningChief Financial Officer at TrackviaCharles VarVice President, Marketing at TrackviaWalker FentonSenior Vice President, Product Management at Trackvia
+ 3 more