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Jeffrey Smith

Director at XL Batteries. Also a director at Tilt Five and Lightmatter.

DirectorRoles at 3 startups
Updated Nov 10, 2026·Latest SEC filing Jul 14, 2026·Suggest an edit

About Jeffrey Smith

Jeffrey Smith is a director at XL Batteries.

Form D filings also name Jeffrey Smith as a director at Tilt Five and Lightmatter.

Jeffrey Smith first appears on SEC filings in 2023.

Experience

This experience comes from Jeffrey Smith's profile and from SEC filings. For roles taken from filings, the years are when the filings name Jeffrey Smith in the role, so the role may have started earlier or lasted longer.

XL Batteries, Inc. Current
Director
2024 – Present · Marlborough, MA
Develops long-duration flow batteries for grid operators, data centers and industrial users.
Lightmatter, Inc. Current
Director
2023 – Present · Mountain View, CA
Tilt Five, Inc. Current
Director
2020 – Present · Fremont, CA
SIP Global Partners Current
General Partner
2019 – Present
Exponam Current
Co-Founder
2018 – Present
NextBoston Current
Founding Partner
2000 – Present
Flight Landata
CEO
2009 – 2012
Gensym
Chief Restructuring Officer
2006 – 2008
KWI International
CEO
2002 – 2005
Praim Technologies
CEO / Partner
1992 – 2000
Smith Valve Asia
Managing Director / Principal
1981 – 1991

Key Colleagues at Startups

The people Jeffrey Smith works with at each company, as listed on that company's latest Form D.

XL Batteries, Inc. · Form D, Jul 14, 2026
Thomas Sisto
Thomas Sisto
Co-Founder & CEO, director
JS
Tilt Five, Inc. · Form D, Nov 12, 2024
JE
Jeri Ellsworth
President & Chief Executive Officer, director
Lightmatter, Inc. · Form D, Oct 25, 2024
CS
Colin Sturt
Executive officer
DB
Darius Bunandar
Executive officer and director
RB
KV
SJ
Simona Jankowski
Executive officer
EN
SP
Santo Politi
Director
NH
Nicholas Harris
President and Chief Executive Officer, director

Sources

  1. SECXL Batteries, Inc. Form D, filed Jul 14, 2026
  2. SECTilt Five, Inc. Form D, filed Nov 12, 2024
  3. SECLightmatter, Inc. Form D, filed Oct 25, 2024