Investor · Calabasas, CA
Sebastian Sobezak
Open Sebastian in the network graph →Filings
24
SEC Form D
Connections
58
co-filers
Capital
$39.8M
across filings
Active
Apr 2023
to Dec 2025
Most-connected co-filers (58)
Lyn Alden · Calabasas, CA21 sharedDavid Song · Calabasas, CA16 sharedYan Pritzker · Calabasas, CA14 sharedMichael Seibel · New York, NY12 sharedBlake Potolicchio · Bethesda, MD10 sharedMichael Rabin · Bethesda, MD10 sharedJared Okun · Bethesda, MD10 sharedPeter Shkreli · Bethesda, MD10 sharedGuggan Datta · Bethesda, MD10 sharedRaheem Choudhry · Milwaukee, WI8 sharedQuantamentals Management Group, Llc · Woodside, CA8 sharedGeoff C. Ruddick · Grand Cayman, Cayman Islands8 sharedQuantamentals Management Group, Llc · Woodside, CA8 sharedAleem Choudhry · Milwaukee, WI8 sharedBoris M. Onefater · New York, NY8 sharedOIHJV Portfolio Investors GP, LLC · Bethesda, MD4 sharedHolly K. Olson · Santa Monica, CA2 sharedLenard W. Marcus · Princeton, NJ2 sharedRobert D. Mittendorff · Seattle, WA2 sharedRon Zwanziger · London, United Kingdom2 sharedJacques P. Chappuis · Toronto, Ontario, Canada2 sharedShang K. Ni · Santa Monica, CA2 sharedAlyssa K. Ellard · Santa Monica, CA2 sharedChristopher K. Delaney · Santa Monica, CA2 shared
Recent filings (24)
OIHJV Portfolio Investors, L.P.Feb 2026 · 5 co-filers$44.1MOIHJV Portfolio Investors Parallel, L.P.Feb 2026 · 5 co-filers$44.1MOIHJV Portfolio Investors, L.P.Dec 2025 · 16 co-filers$28.4MOIHJV Portfolio Investors Parallel, L.P.Dec 2025 · 16 co-filers$28.4MBaekeland Sidecar OI LPDec 2025 · 14 co-filers$3.8MQuantamentals Large-Cap Offshore Fund, Ltd.Dec 2025 · 7 co-filersQuantamentals Large-Cap Fund, L.P.Dec 2025 · 7 co-filersELECTRIC SOLIDUS, INC.Dec 2025 · 14 co-filers$10.3MELECTRIC SOLIDUS, INC.Dec 2025 · 14 co-filers$10.3MDeer Valley Sidecar OI LPOct 2025 · 16 co-filers$4.3MThree Sisters Sidecar OI LPOct 2025 · 15 co-filers$3.2MELECTRIC SOLIDUS, INC.Oct 2025 · 14 co-filers$29.5MELECTRIC SOLIDUS, INC.Oct 2025 · 14 co-filers$29.5MAir Park Sidecar OI LPSep 2025 · 16 co-filers$2.7MW El Sol Sidecar OI LPAug 2025 · 16 co-filers$2.9MW El Sol Sidecar OI LPAug 2025 · 16 co-filers$3.0MCentral Sidecar OI LPAug 2025 · 16 co-filers$4.1MIron Bridge Sidecar OI LPJul 2025 · 16 co-filers$3.7MQuantamentals Large-Cap Offshore Fund, Ltd.Apr 2025 · 7 co-filersQuantamentals Large-Cap Fund, L.P.Apr 2025 · 7 co-filersQuantamentals Large-Cap Fund, L.P.Apr 2024 · 7 co-filersQuantamentals Large-Cap Offshore Fund, Ltd.Apr 2024 · 7 co-filersGOF III Feeder A, L.P.Apr 2023 · 31 co-filersGOF III Feeder B, L.P.Apr 2023 · 31 co-filersQuantamentals Large-Cap Fund, L.P.Apr 2023 · 7 co-filers
Derived from public SEC Form D (Reg D) filings; entities resolved probabilistically. See Sebastian in the interactive graph →