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RJ

Rajul Jain

Director at SonoThera. Also a director at Quanta Therapeutics, Capstan Therapeutics and Lb Pharmaceuticals and an executive officer at Vida Ventures.

InvestorDirectorRoles at 4 startupsVida Ventures
Updated Nov 9, 2026·Latest SEC filing Sep 22, 2026·Suggest an edit

About Rajul Jain

Rajul Jain is a director at SonoThera.

Form D filings also name Rajul Jain as a director at Quanta Therapeutics, Capstan Therapeutics and Lb Pharmaceuticals.

Rajul Jain appears on fund filings for Vida Ventures.

Rajul Jain first appears on SEC filings in 2021.

Experience

This experience comes from SEC filings. The years are when the filings name Rajul Jain in the role, so the role may have started earlier or lasted longer.

Vida Ventures
Executive officer
2021 – 2026 · Fund filings for 2 funds
SonoThera, Inc.
Director
2026 · South San Francisco, CA
SonoThera develops nonviral genetic medicines that use ultrasound and imaging microbubbles to deliver DNA and RNA into chosen organs, starting with Duchenne muscular dystrophy.
Quanta Therapeutics, Inc.
Director
2026 · South San Francisco, CA
Develops cancer medicines for patients with RAS-driven cancers.
Capstan Therapeutics, Inc.
Director
2024 · San Diego, CA
LB Pharmaceuticals Inc.
Director
2023 – 2024 · New York, NY

Key Colleagues at Startups

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

SonoThera, Inc. · Form D, Jun 30, 2026
SF
Steven Feinstein
Co-founder & Chief Scientific Officer
KG
Kenneth Greenberg
Co-founder, President & CEO, director
MD
Michael Davidson
Co-founder & Executive Chairman
SG
CZ
Carolyne Zimmermann
Chief Business Officer
BH
Brian Halak
Director
Quanta Therapeutics, Inc. · Form D/A, Jun 24, 2026
MK
Maha Katabi
Director
PN
Perry Nisen
Chief Executive Officer and director
CP
Cameron Pitt
Chief Operating Officer and director
MF
Maria Fardis
Director
YH
Ying Huang
Director
DM
Derek Metzger
Chief Strategy Officer
Capstan Therapeutics, Inc. · Form D, Mar 20, 2024
FP
Fabio Pucci
Director
LS
Laura Shawver
President and CEO, director
RF
Ramin Farzaneh-Far
Executive officer
JT
Justin Thacker
Executive officer
MB
AB
Adrian Bot
Executive officer
NL
PK
Priya Karmali
Executive officer
KS
Karen Smith
Director
LB Pharmaceuticals Inc. · Form D/A, Jan 10, 2024
RN
Ran Nussbaum
Director
ZP
Zachary Prensky
Chief Executive Officer and director
RR
AV
Andrew Vaino
Executive officer
AE
Anna Eramo
Executive officer
MP
Marc Panoff
Executive officer
RL
Rebecca Luse
Director
CY
Chen Yu
Director

Sources

  1. SECSonoThera, Inc. Form D, filed Jun 30, 2026
  2. SECQuanta Therapeutics, Inc. Form D/A, filed Jun 24, 2026
  3. SECCapstan Therapeutics, Inc. Form D, filed Mar 20, 2024
  4. SECLB Pharmaceuticals Inc. Form D/A, filed Jan 10, 2024