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Robert Weisskoff

Robert Weisskoff

Senior partner at F-Prime Capital; director of Adela

DirectorRoles at 4 startups
Updated Nov 9, 2026·Latest SEC filing Oct 19, 2026·Suggest an edit

About Robert Weisskoff

Robert Weisskoff is a senior partner at F-Prime Capital and an Adela director; he joined F-Prime in 2004. Its portfolio includes life sciences, technology, health technology and services. He has spent 30 years in academia and bioscience. Earlier, he held senior research and business development roles at drug and medical-device companies. He was an associate professor of radiology at Harvard Medical School and taught in the Harvard-MIT Health Sciences Technology program. At Massachusetts General Hospital, he conducted research and was associate director of the MGH-NMR Center. He has written more than 100 peer-reviewed papers and is named on six U.S. patents. He earned degrees from MIT, Columbia University and Harvard University.

He serves on six other company boards, including Affinia Therapeutics, RareCyte and Zenflow. His prior board work includes Caribou Biosciences, Farapulse and ViewRay. He also joined Tempest Therapeutics' board during its Series B financing.

Experience

This experience comes from official bios and from SEC filings. For roles taken from filings, the years are when the filings name Robert Weisskoff in the role, so the role may have started earlier or lasted longer.

Adela, Inc. Current
Board of Directors
2023 – Present · Foster City, CA
Adela's blood tests help clinicians detect recurrence and drug developers study treatment response.
RareCyte, Inc. Current
Board of Directors
2021 – Present · Seattle, WA
Affinia Therapeutics Inc. Current
Board of Directors
2020 – Present · Waltham, MA
Zenflow, Inc. Current
Board of Directors
2017 – Present · South San Francisco, CA
F-Prime Capital Current
Senior Partner
2004 – Present
Countable Labs Current
Board of Directors
Plasmagen Biosciences Current
Board of Directors
Shinobi Therapeutics Current
Board of Directors
Tempest Therapeutics
Board of Directors
From 2018
Harvard Medical School
Associate Professor of Radiology
Massachusetts General Hospital
Associate Director of the MGH-NMR Center
Accuri Cytometers
Board of Directors
Caribou Biosciences
Board of Directors
Farapulse
Board of Directors
Ikano Therapeutics
Board of Directors
Laurus Labs
Board of Directors
Structure Therapeutics
Board of Directors
Surface Oncology
Board of Directors
Tetraphase
Board of Directors
Transave
Board of Directors
Topaz
Board of Directors
ViewRay
Board of Directors
Xilio Therapeutics
Board of Directors

Key Colleagues at Startups

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

Adela, Inc. · Form D, Oct 19, 2026
LM
Lindsay Mateo
Chief Executive Officer and director
DB
David Bonita
Director
PB
Paul Brown
Director
DC
Daniel Diniz De Carvalho
Executive officer
AH
Anne-Renee Hartman
Co-Founder and Chief Medical Officer
Maneesh Jain
Maneesh Jain
Director
DS
David Scheer
Chairman of Adela's Board of Directors
AW
Alan Williams
Executive officer
AK
Affinia Therapeutics Inc. · Form D, Oct 14, 2025
CF
Carole Faig
Director
RD
Rami Daoud
Executive officer
DB
RM
Rick Modi
Chief Executive Officer and director
DG
ES
EM
SN
Sean Nolan
Director
Zenflow, Inc. · Form D, Nov 19, 2024
SS
BK
Bryan Kim
Director
JB
John Beck
Executive officer
RC
Radu Cautis
Director
AC
BR
SM
Shreya Mehta
CEO and director
RareCyte, Inc. · Form D, Jul 25, 2023
DK
RS
DM
JG
AS
SR
Stephen Reichenbach
Executive officer
JJ
Joseph Victor Jr.
Chief Executive Officer and director

Robert Weisskoff in the News

Sources

  1. SECAdela, Inc. Form D, filed Oct 19, 2026
  2. SECAffinia Therapeutics Inc. Form D, filed Oct 14, 2025
  3. SECZenflow, Inc. Form D, filed Nov 19, 2024
  4. SECRareCyte, Inc. Form D, filed Jul 25, 2023
  5. P3Our Leadership Team and Board of Directors | RareCyte
  6. P7Tempest Therapeutics Closes $70 Million Series B Financing