Investor · New Haven, CT

Sean Cassidy

Open Sean in the network graph →

Filings

9

SEC Form D

Connections

45

co-filers

Capital

$57.6M

across filings

Active

Oct 2015

to Jul 2025

Most-connected co-filers (45)

Craig Crews · New Haven, CT3 shared Liam O. Ratcliffe · New York, NY2 shared Jonathan H. Soderstrom · New Haven, CT2 shared Jere B. Clark · Scottsdale, AZ2 shared Ron B. Gerasimos · Scottsdale, AZ2 shared Jay Brockman · South Bend, IN2 shared Ken Jacobsen · South Bend, IN2 shared Edwin Upchurch · South Bend, IN2 shared Oron Afek · Los Angeles, CA2 shared Brad Margus · South San Francisco, CA2 shared James Hunt · New York, NY2 shared Andrew Perlman · Seattle, WA2 shared Stephen Squinto · HANOVER, NH2 shared Tim Shannon · Orinda, CA2 shared Kush Parmar · San Francisco, CA2 shared Andrew Levin · Boston, MA2 shared Ernest H. Pomerantz · Concord, MA1 shared James H. Bartlett · Concord, MA1 shared Jennifer J. Davagian · Concord, MA1 shared Avi B. Deutsch · Lincoln, MA1 shared David B. Matias · Atlanta, 2Q1 shared Tal Morgenstern · New York, NY1 shared Tim W. Shannon · New Haven, CT1 shared Michael Egholm · Branford, CT1 shared

Recent filings (9)

Duracrin, LLCFeb 2026 · 1 co-filer$1.0M Quarry DAC, IncFeb 2026 · 1 co-filer$2.1M Quarry Heme, IncFeb 2026 · 1 co-filer$13.5M Quarry Glue Holding Co LLCNov 2025 · 11 co-filers$33.6M Lucem Health, Inc.Jul 2025 · 7 co-filers$4.3M Lucem Health, Inc.Jul 2025 · 7 co-filers$4.3M AbbraTech Holdings LLCDec 2023 · 9 co-filers$10.0M AbbraTech Holdings LLCDec 2023 · 9 co-filers$10.0M Lucem Health, Inc.May 2023 · 5 co-filers$7.7M Lucem Health, Inc.May 2023 · 5 co-filers$7.7M ARVINAS HOLDING COMPANY, LLCApr 2018 · 26 co-filers$55.0M ARVINAS HOLDING COMPANY, LLCApr 2018 · 26 co-filers$55.0M ARVINAS HOLDING COMPANY, LLCOct 2015 · 23 co-filers$41.6M

Derived from public SEC Form D (Reg D) filings; entities resolved probabilistically. See Sean in the interactive graph →