Seth Lyon is an Operating Partner at Firmament, whose known portfolio counts 10 companies.
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Investment focus
- Stage
- Late-StageSeed
Contacts
Affiliated funds' portfolios
Operating Partner at Firmament, whose known portfolio counts 10 companies
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Investor Profile
The listing covers sectors Climate, Commerce, Healthcare and SaaS, and focus areas Enterprise SaaS, Healthcare Operations, Logistics and Supply Chain. Startups operating in these areas may find Seth Lyon relevant.
Firmament appears in Late-Stage and Seed rounds across its known deals.
The firm portfolio and the focus above give founders context on whether Seth Lyon matches their raise.
Colleagues at Firmament
Lisa Moraglia
Investor
New York, United States
Christopher Smith
Investor
New York, United States
Green Campbell
Principal
Nashville, United States
David Jones
Investor
New York, United States
Bradley Ehrlich
Investor
New York, United States
Alex Stanulis
Investor
New York, United States
Brian Peters
Principal
Philadelphia, United States
Jiwon Rachel Choi
Investor
New York, United States
Andy McNeill
Investor
Russellville, United States
Edvinas Berzanskis
Vice President
New York, United States
Chas Egan
Vice President
New York, United States
Parris Boyd
Partner
Los Angeles, United States
Frequently asked questions
Who is Seth Lyon?
Seth Lyon is a private equity investor and venture debt investor based in Washington, District of Columbia, United States, listed as Operating Partner at Firmament. The known portfolio of that firm counts 10 companies. That portfolio belongs to the firm, not to Seth Lyon personally.
What does Seth Lyon invest in?
Listed sectors include Climate, Commerce, Healthcare and SaaS; listed focus areas include Enterprise SaaS, Healthcare Operations, Logistics and Supply Chain. Those tags come from the portfolios of the firms this profile is attached to, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Seth Lyon invest at?
Firmament appears in Late-Stage and Seed rounds across its known deals, and Seth Lyon is listed there as Operating Partner. 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 Seth Lyon listed at?
Seth Lyon is listed as Operating Partner at Firmament. 12 other people in the database share a firm with Seth Lyon.
How do I contact Seth Lyon?
A LinkedIn page is on file for Seth Lyon. It is readable inside RaiseHunt after you create an account. The database holds no email address and no phone number for this profile.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal