About David Singer
David Singer is a director at Infleqtion.
Form D filings name David Singer as a director at ColdQuanta.
David Singer reports to the SEC as a director or major shareholder of 8 public companies, including Castlight Health (CSLT), 1Life Healthcare (ONEM) and Seer (SEER).
David Singer first appears on SEC filings in 2006.
Experience
This experience comes from SEC filings. The years are when the filings name David Singer in the role, so the role may have started earlier or lasted longer.
II
Infleqtion, Inc.
Director
2026 · Public company (INFQ)
CI
Castlight Health, Inc.
Director
2014 – 2022 · Public company (CSLT)
1I
1Life Healthcare Inc
Director
2020 – 2021 · Public company (ONEM)
SI
Seer, Inc.
Director and 10% owner
2020 – 2021 · Public company (SEER)
PI
Pacific Biosciences of California, Inc.
Director
2010 – 2012 · Public company (PACB)
CI
Corcept Therapeutics Inc.
Director
2008 · Public company (CORT)
AI
Affymetrix Inc.
Director
2006 – 2007 · Public company (AFFX)
OC
Oscient Pharmaceuticals Corp.
Director
2006 – 2007 · Public company (OSCI)
Key Colleagues at Startups
The people David Singer works with at each company, as listed on that company's latest Form D.
ColdQuanta, Inc. · Form D, Aug 29, 2025
KJ
Kristina Johnson
Director
DM
Dawn Meyerriecks
Director
CF
Charles Friedland
Director
TB
Tyler Brous
Director
PG
Pranav Gokhale
Executive officer
ET
Erik Thoresen
Director
TD
Timothy Day
Director
PL
Paul Lipman
Executive officer
CL
Catherine Lego
Director
JM
Julie McGee
Executive officer
WD
W. Dollens
Director
CG
Christopher Galvin
Director
MK
Matthew Kinsella
Chief Executive Officer and director
DA
Dana Anderson
Executive officer and director