Jls
Emerging managerBuilt from this firm's Form D filings. The firm files no SEC adviser report.
- Website
- https://www.jls.fund
- HQ
- NY
Jls is a venture firm that finances and helps build companies turning breakthroughs in neuroscience, technology, and data into outcomes for patients and value for strategic acquirers. Lindsay Hoover and Simeon Schnapper are listed as managing partners, with Jeffrey Siegel as partner and investor relations contact. The firm's portfolio includes ProNovo Therapeutics, which develops precision therapeutics for neuropsychiatric disorders such as Major Depressive Disorder and Schizophrenia.
01 · Says / Does
| Tag | Says | Does |
|---|---|---|
| Stages | Not stated | Not enough dated deals |
| Sectors | Healthtech, Biotech | Not enough dated deals |
| Regions | Not stated | Not enough dated deals |
Says: what the firm's funds state. Does: from 0 dated deals in the last 24 months.
02 · Fund history
| Fund | Year | Size | Status |
|---|---|---|---|
| JLS Fund II LP Finances and helps build companies that translate breakthroughs in neuroscience, technology, and data into patient outcomes and value for strategic acquirers. Portfolio spans psychedelic-assisted therapy, neuropsychiatric therapeutics, and psychiatric biotech. Inferred from the firm's website | 2023 | $13.03M (Form D) | Open, writing first checks |
| JLS Fund 1 LP | 2021 | $5.26M to $50M (Form D) | Follow-ons only |
03 · People across funds
- Jeffrey Siegel, Partner & Investor Relations
JLS Fund II LP (Team); JLS Fund 1 LP (Named on Form D)
- Lindsay Hoover, Managing partner
JLS Fund II LP (Named on Form D); JLS Fund 1 LP (Named on Form D)
- Michael Gruber, Managing Member of the Issuer's General Partner
JLS Fund 1 LP (Named on Form D)
- Simeon Schnapper, Managing partner
JLS Fund II LP (Named on Form D); JLS Fund 1 LP (Named on Form D)
- Andrew TataRsky, Advisor
JLS Fund II LP (Team); JLS Fund 1 LP (Team)
- Brendan Hussey, Principal
JLS Fund II LP (Team); JLS Fund 1 LP (Team)
- David Hirsch, Advisor
JLS Fund II LP (Team); JLS Fund 1 LP (Team)
- Ethan Nadelmann, Advisor
JLS Fund II LP (Team); JLS Fund 1 LP (Team)
- Gul DOlen, Advisor
JLS Fund II LP (Team); JLS Fund 1 LP (Team)
- Leonard Pickard, Advisor
JLS Fund II LP (Team); JLS Fund 1 LP (Team)
- Mark Losh, Advisor
JLS Fund II LP (Team); JLS Fund 1 LP (Team)
- Nick Gillespie, Advisor
JLS Fund II LP (Team); JLS Fund 1 LP (Team)
- Walter Greenleaf, Advisor
JLS Fund II LP (Team); JLS Fund 1 LP (Team)
04 · Recent deals
No dated deals found yet.
05 · Latest from the firm
No news from the firm's website yet.
06 · Sources
Fund dates and sizes are from SEC Form D filings.
Last verified: Oct 28, 2026