Leeor Mushin is Co-founder and General Partner at Formation, which leads pre-seed rounds and participates in seed rounds. The firm is built around supporting founders while a company’s core insight, team and initial market are still taking shape.
Before Formation, Leeor was a Principal at Floodgate and created the 20|20 Fund at Stanford. He had previously started a digital-marketing company that his co-founder continues to run and worked on strategy at a publicly traded energy company.
His mentoring focuses on company formation: helping founders refine non-consensus insights, validate early product direction and structure initial fundraising rounds before market validation becomes apparent to competitors.
Where Leeor can help
- pre-seed
- enterprise
- company formation
- venture capital
- founder-market fit
Operating and investing experience
A selection of companies and roles connected to Leeor Mushin.
Ventures
Formation
Co-founder & General Partner; leads pre-seed rounds and participates in seed rounds.
Floodgate
Former Principal
20|20 Fund
Founder; created at Stanford.
Earlier operating work
Founded a digital-marketing company and worked in strategy at a publicly traded energy company.
Highlights
- Co-founded Formation to lead pre-seed rounds and participate in seed rounds.
- Created Stanford’s 20|20 Fund before joining Floodgate, where he became a Principal.
- Brings earlier experience founding a digital-marketing company and working in corporate strategy.
Questionsfounders ask aboutLeeor Mushin
Where can Leeor help founders?
Leeor works with founders on initial company formation, defining the early core thesis, identifying early customer pull, and securing pre-seed capital.
Which company-building situations are most relevant to Leeor’s experience?
He is especially valuable for technical and enterprise founders at the idea and pre-seed stages before formal company metrics are in place.
What perspective does Leeor bring as a mentor?
He brings the viewpoint of an early-conviction investor who specializes in backing teams at the formation phase when clarity and thesis development matter most.
The best mentors spot the best founders early.
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