Investor · Tralee, Kerry, Ireland
Derek O'Sullivan
Open Derek in the network graph →Filings
44
SEC Form D
Connections
103
co-filers
Capital
$370K
across filings
Active
Nov 2020
to Nov 2025
Most-connected co-filers (103)
Konrad Testwuide · Tralee, Kerry, Ireland25 sharedGuy Carling · Tralee, Kerry, Ireland20 sharedCastle Hook Fund GP, LLC · New York, NY16 sharedRajeev J. Amara · NASHVILLE, TN13 sharedShyam J. Ravindran · NASHVILLE, TN13 sharedJohn G. Efird · NASHVILLE, TN13 sharedScott Mercer · NAPA, CA13 sharedThe Miningham Group LLC · Tampa, FL13 sharedMatthew Dowling, Ph.D · Riverdale, MD13 sharedMichael B. Schoenfeld · San Juan, Puerto Rico12 sharedSamuel B. Silverman · San Juan, Puerto Rico12 sharedNazar Massouh · New York, NY12 sharedMark Friedland · New York, NY12 sharedOic, L.P · New York, NY9 sharedOic, L.P · New York, NY9 sharedVincent O'Brien · Tralee, Kerry, Ireland8 sharedMichael C. Mauer · New York, NY7 sharedSteven Codispoti · New York, NY7 sharedBrenner Daniels · Lake Oswego, OR7 sharedRocco E. Delguercio · New York, NY7 sharedChristopher E. Jansen · New York, NY5 sharedTom Reiss · Las Vegas, NV5 sharedThomas N. Weber · Luxembourg, Luxembourg5 sharedRobert Kinderman · New York, NY5 shared
Recent filings (44)
SGIF III (WT), LLCDec 2025 · 25 co-filersOIC Gevo Co-Invest, L.P.Nov 2025 · 11 co-filersArcline Capital Partners IV AL Co-Invest LPNov 2025 · 8 co-filersOIC Credit Income Fund I, L.P.Nov 2025 · 11 co-filersWhittier Odyssey Fund, LPAug 2025 · 26 co-filersArcline Capital Partners IV AD Co-Invest LPAug 2025 · 8 co-filersOrion Energy Credit Opportunities GCE Co-Invest, L.P.Jun 2025 · 11 co-filersThermo Tents LtdMay 2025 · 5 co-filers$10KThermo Tents LtdMay 2025 · 5 co-filers$10KARCLINE CAPITAL PARTNERS IV-A LPMay 2025 · 8 co-filersARCLINE CAPITAL PARTNERS IV LPMay 2025 · 8 co-filersARCLINE CAPITAL PARTNERS IV LPMay 2025 · 8 co-filersARCLINE CAPITAL PARTNERS IV-A LPMay 2025 · 8 co-filersOIC CargoBeamer Co-Invest, L.P.Mar 2025 · 11 co-filersOIC Credit IV Top-Up Fund, L.P.Mar 2025 · 11 co-filersARCLINE DOUBLE EAGLE CV-A LPFeb 2025 · 8 co-filersARCLINE DOUBLE EAGLE CV LPFeb 2025 · 8 co-filersARCLINE DOUBLE EAGLE CO-INVEST-A LPSep 2024 · 8 co-filersARCLINE DOUBLE EAGLE CO-INVEST LPSep 2024 · 8 co-filersOIC Structured Equity CI NY, L.P.Sep 2024 · 11 co-filersWhittier Odyssey Fund, LPAug 2024 · 25 co-filersOIC ZincFive Co-Invest, L.P.Aug 2024 · 11 co-filersThermo Tents LtdJul 2024 · 11 co-filers$80KThermo Tents LtdJul 2024 · 11 co-filers$80KThermo Tents LtdJul 2024 · 11 co-filers$80K
Derived from public SEC Form D (Reg D) filings; entities resolved probabilistically. See Derek in the interactive graph →