Investor profile
Jim Armstrong
Angel & Managing Director at Clearstone Venture Partners, Founding Partner at March Capital
An angel investor based in Manhattan Beach, California, United States, Jim Armstrong has 3 known investments: Xfire, Product Science and aDealio.
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Investment focus
- Stage
- Seed
Contacts
Jim Armstrong portfolio companies (3)
- Xfire
- Product Science
- aDealio
Affiliated funds' portfolios
Managing Director at Clearstone Venture Partners, whose known portfolio counts 11 companies
- Managed by Q
- Tesloop
- LeisureLink
- LiveLike
- Rhone Apparel
- Vyng
- AOptix Technologies
- Rubicon Project
- At The Pool
- Kuapay
- Billdesk
Founding Partner at March Capital, whose known portfolio counts 9 companies
- Rally
- Together AI
- Xage Security
- Lila Sciences
- Uniphore
- Extend
- Luminance
- Nawy
- SuperOps.ai
Investor Profile
The known portfolio sits in sectors AI, Consumer and SaaS, and focus areas Consumer Internet, Data Analytics, Enterprise SaaS and Media.
Jim Armstrong appears in Seed rounds across the known deals.
The portfolio and focus above give founders context on whether Jim Armstrong matches their raise.
Colleagues
Hyun Koo
Partner
Los Angeles, United States
Jed Leidheiser
Partner
Los Angeles, United States
Richard Gu
Vice President
Los Angeles, United States
Solomon Hailu
Partner
Santa Monica, United States
Brad Weirick
Partner and General Counsel
Santa Monica, United States
Dana Moraly
Partner and Chief Financial Officer
Santa Monica, United States
Maya Matthews
Investor
San Francisco, United States
Vivian kim
Partner (Healthcare & Technology Investments)
Irvine, United States
Allie Ries
Investor
Santa Monica, United States
Oliver Marques
Head of Capital Formation
Los Angeles, United States
Wes N.
Partner
Los Angeles, United States
Ravi Rajamony
Board Director
Bengaluru, India
Jamie Montgomery
Co-Founder and Managing Partner
Santa Monica, United States
Lucas Pino
Vice President
Los Angeles, United States
Sumant Mandal
Managing Director
Santa Monica, United States
Rajan Mehra
Partner
Mumbai, India
Vish Mishra
Member of General Partner and Venture Director
Menlo Park, United States
William Elkus
Founder & Managing Director
Park City, United States
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Frequently asked questions
Who is Jim Armstrong?
Jim Armstrong is an angel investor based in Manhattan Beach, California, United States with 3 known investments on file, among them Xfire, Product Science and aDealio. The sections above list the sectors, stages and firms attached to that record.
What does Jim Armstrong invest in?
Listed sectors include AI, Consumer and SaaS; listed focus areas include Consumer Internet, Data Analytics, Enterprise SaaS and Media. Those tags come from the companies attached to this profile, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Jim Armstrong invest at?
The known deals of Jim Armstrong include Seed rounds. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
Which firm is Jim Armstrong listed at?
Jim Armstrong is listed as Managing Director at Clearstone Venture Partners. 18 other people in the database share a firm with Jim Armstrong.
How do I contact Jim Armstrong?
An email address, a phone number and a LinkedIn page are on file for Jim Armstrong. The address stays masked on this page and is readable inside RaiseHunt after you create an account.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal