About Patrick Weiss
Patrick Weiss is a director at Ramona Optics.
Form D filings also name Patrick Weiss as a director at Slingshot Biosciences.
Patrick Weiss first appears on SEC filings in 2023.
Experience
This experience comes from Patrick Weiss's profile and from SEC filings. For roles taken from filings, the years are when the filings name Patrick Weiss in the role, so the role may have started earlier or lasted longer.
Ramona Optics, Inc. Current
Chairman of the Board
2026 – Present · Durham, NC
Microscopes and image analysis software for biomedical research teams.
SB
Syndex Bio Current
Chairman of the Board
2025 – Present
MO
Moleculent Current
Chairman of the Board
2024 – Present
CL
Countable Labs Current
Chairman of the Board
2024 – Present
AP
ARCH Venture Partners Current
Venture Partner
2022 – Present
SB
Scale Biosciences
Chairman of the Board
2023 – 2025
TB
Twist Bioscience
COO
2014 – 2022
IC
Independent Contractor
Life Sciences & Biotech Consultant
2010 – 2013
OB
Operon Biotechnologies
CEO
2004 – 2010
QI
QIAGEN
VP Gene Silencing
2002 – 2004
XI
Xeragon, Inc.
CEO & Founder
1996 – 2002
Key Colleagues at Startups
The people Patrick Weiss works with at each company, as listed on that company's latest Form D.
Ramona Optics, Inc. · Form D, Mar 12, 2026
MS
Michael Shepherd
Director
RH
Roarke Horstmeyer
Scientific Director
MA
Margaret Aery
Chief Operating Officer
SK
Sean Kendall
Director
GH
Gregor Horstmeyer
Chief Executive Officer and director
MH
Mark Harfouche
Chief Technology Officer and director
Slingshot Biosciences, Inc. · Form D/A, Apr 26, 2024
NB
Nicolas Barthelemy
Director
CR
Corey Ritter
Director
AL
Andrew Lee
Director
RS
Ronald Silberman
Director
JK
Jeffrey Kim
Chief Executive Officer and director