Investor · Rye, NY

William A. Ullman

Open William in the network graph →

Filings

26

SEC Form D

Connections

61

co-filers

Capital

$95.7M

across filings

Active

Sep 2016

to Jan 2026

Most-connected co-filers (61)

Philip T. Hughes · Grand Cayman, Cayman Islands19 shared Mark J. Laabs · Durham, NC10 shared Tekne Capital Management, LLC · New York, NY9 shared Daniel Priestley · Grand Cayman, Cayman Islands8 shared Beeneet Kothari · New York, NY8 shared Modern Energy Management LLC · Durham, NC8 shared Modern Energy Group Fund Iii GP LLC · Durham, NC8 shared John C. Howe · Darien, CT8 shared Ronald D. Bobman · New York, NY6 shared Mark W. Cook · GRAND CAYMAN, Cayman Islands5 shared Optima Management Partners LP · Pembroke, Bermuda5 shared Capital Returns Managmenet, Llc · New York, NY5 shared Capital Returns Managmenet, Llc · New York, NY5 shared Optima Group Holdings LLC · New York, NY5 shared Alejandro Velez · Oakland, CA3 shared Stephen J. Darke · Sydney, Channel Islands3 shared Karl T. O'Reilly · George Town, Grand Cayman, Cayman Islands3 shared Rohan K. Menon · Sydney, Channel Islands3 shared Jim Harris · Oakland, CA3 shared John J. Ragsdale · Dallas, TX3 shared Brad Craig · Steamboat Springs, CO3 shared Exploration L. Bluegrass · GLASGOW, KY3 shared Gilbert L. Faircloth · GLASGOW, KY3 shared Michael Krasnow · Charlotte, VT3 shared

Recent filings (26)

Tekne Offshore Fund, Ltd.Jan 2026 · 3 co-filers Tekne Offshore Fund, Ltd.Jan 2025 · 9 co-filers Tekne Offshore Fund, Ltd.Jan 2024 · 9 co-filers Tekne Offshore Fund, Ltd.Jan 2023 · 11 co-filers Tekne Offshore Fund, Ltd.Jan 2022 · 11 co-filers Tekne Offshore Fund, Ltd.Jan 2021 · 11 co-filers Tekne Offshore Fund, Ltd.May 2020 · 11 co-filers Capital Returns, Ltd.Jun 2019 · 10 co-filers Tekne Offshore Fund, Ltd.May 2019 · 11 co-filers Back to the Roots, Inc.Dec 2018 · 17 co-filers$2.8M Tekne Offshore Fund, Ltd.Sep 2018 · 7 co-filers Capital Returns, Ltd.May 2018 · 10 co-filers Back to the Roots, Inc.May 2018 · 17 co-filers$4.0M Tekne Offshore Fund, Ltd.Sep 2017 · 7 co-filers NEO Farmaceuticals LLCJun 2017 · 5 co-filers$5.0M Back to the Roots, Inc.Jun 2017 · 17 co-filers$3.5M NEO Farmaceuticals LLCJun 2017 · 5 co-filers$5.0M CAPITAL RETURNS LPMay 2017 · 11 co-filers Capital Returns, Ltd.May 2017 · 10 co-filers TUDOR A & B PROSPECTOct 2016 · 5 co-filers$391K EMMITT A & B PROJECTSep 2016 · 5 co-filers$391K Tekne Offshore Fund, Ltd.Sep 2016 · 11 co-filers EMMITT A & B PROJECTSep 2016 · 5 co-filers$391K Capital Returns, Ltd.May 2016 · 7 co-filers Capital Returns, Ltd.May 2016 · 7 co-filers

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