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Rick Grinnell

Rick Grinnell

Founder and Managing Partner atGlasswing VenturesBoston
LinkedIn X Glasswing Ventures websiteFirm profile

Rick Grinnell is Founder and Managing Partner of Glasswing Ventures, investing in AI-native security and enterprise infrastructure. He has over 25 years in venture capital and operating experience, and has led investments in several companies.

What Rick can write

Writes checks ofNot reported
Comes in atPre-seed, SeedCan lead the round
Ownership target7-10%At first check
Email the firm[email protected]The firm's own inbox for founders.

Career

  1. PictureTel · senior marketing and engineering roles
  2. ClearOne Communications · senior marketing and engineering roles
  3. Adero · senior marketing and engineering roles
  4. Glasswing Ventures · Founder and Managing Partner
    Now
  5. PictureTel
  6. ClearOne Communications
  7. Adero

Companies founded

Glasswing Ventures

Investments named in public bios

Allure SecurityBlack KiteLambent SpacesNametagNarrativeRealm.SecuritySubstrate OneTrustleDigital GuardianEqualLogicPrelertResilient SystemsTrackViaVeloBitCydelphiSigma Automate

Focus

ai-native securityenterprise infrastructureCybersecurityArtificial IntelligenceMachine Learning

Education

Massachusetts Institute of Technology (MIT), BS and MS degrees in Electrical EngineeringHarvard Business School (HBS), MBAMIT, BS and MS in Electrical EngineeringHBS, MBA

Also at Glasswing Ventures

Kleida Martiro
Kleida MartiroManaging Director
Rudina Seseri
Rudina SeseriFounder and Managing Partner
Vlad Sejnoha
Vlad SejnohaPartner
Ali Mahmoud
Ali MahmoudPrincipal
James Massaquoi
James MassaquoiSenior Investment Associate

Partners like Rick

At firms with a similar stage, sector and check size.

Anshu Agarwal
Anshu AgarwalGeneral Partner, Converge
Andrew Rabin
Andrew RabinGeneral Partner + Cofounder, 412 Venture Fund
Aaron Holiday645 Ventures
Josh LumerSenior Principal, Allstate Strategic Ventures
Akira KurabayashiManaging Partner / Head of Japan, DNX Ventures
Brendon DurkinManaging Director, Koch Disruptive Technologies

Alert me when Glasswing Ventures is active

One email when Rick's firm raises a fund, adds a partner or shows new activity.

Founders and investors at a Mode VC gathering

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Raising a pre-seed or seed round? We write $1M to $5M first checks and help founders with distribution. A partner reads every deck.

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Questions

Who is Rick Grinnell?

Rick Grinnell is Founder and Managing Partner of Glasswing Ventures, investing in AI-native security and enterprise infrastructure. He has over 25 years in venture capital and operating experience, and has led investments in several companies.

How much does Rick Grinnell invest?

Glasswing Ventures has not reported a check size. It invests at pre-seed, seed.

How do I pitch Rick Grinnell?

Email [email protected], the firm's inbox for founders, and name Rick in the subject. A warm intro from a founder Glasswing Ventures backed works better.

What did Rick Grinnell do before Glasswing Ventures?

senior marketing and engineering roles at PictureTel; senior marketing and engineering roles at ClearOne Communications; senior marketing and engineering roles at Adero; PictureTel; ClearOne Communications; Adero.

Last updated 2026-10-15. Is this you? Ask for a correction.