Ledger.
Investor · Arlington, VA

William B. Langenstein

Open William in the network graph →
Filings
11
SEC Form D
Connections
67
co-filers
Capital
$4.4M
across filings
Active
Jul 2022
to May 2025

Most-connected co-filers (67)

Dan Feder · San Diego, CA6 sharedStandard Crypto Management LP · San Francisco, CA4 sharedAdam Goldberg · San Francisco, CA4 sharedAlok Vasudev · San Francisco, CA4 sharedRobert M. Greenglass · Cambridge, MA2 sharedCharles B. Hooper · Arlington, VA2 sharedFrank Brochin · New York, NY2 sharedAman Brar · Indianapolis, IN2 sharedKishore Ganji · Dover, DE2 sharedDayne B. Baird · Arlington, VA2 sharedJoseph Logue · Arlington, VA2 sharedBabur Kwaja · Arlington, VA2 sharedVeganaden Mottay · Cybercity, Ebene, O42 sharedMichael B. Mcconnell · Arlington, VA2 sharedAlexander B. Mears · Arlington, VA2 sharedMichael B. Daniels · Arlington, VA2 sharedLawrence B. Prior · Arlington, VA2 sharedRonald Cao · George Town, Grand Cayman, Cayman Islands2 sharedMichael Cowin · Vancouver, British Columbia, Canada2 sharedAlain Bankier · Longboat Key, FL2 sharedJonathan Divincenzo · Miami, FL2 sharedChristopher Boies · New York, NY2 sharedEthan Agarwal · New York, NY2 sharedStephen Miller · Cybercity, Ebene, O42 shared

Recent filings (11)

Armada Topco Inc.Nov 2025 · 16 co-filers$5.0MArmada Topco Inc.Nov 2025 · 16 co-filers$5.0MStandard Crypto Flagship Fund LPMay 2025 · 9 co-filersTwo Six Technologies Holdings Inc.May 2025 · 35 co-filersTwo Six Technologies Holdings Inc.May 2025 · 35 co-filersStandard Crypto Venture Fund III Offshore LPMay 2025 · 9 co-filersStandard Crypto Venture Fund III LPMay 2025 · 9 co-filersStandard Crypto Flagship Fund LPMay 2024 · 9 co-filersTwo Six Technologies Holdings Inc.May 2024 · 35 co-filersTwo Six Technologies Holdings Inc.May 2024 · 35 co-filersEnvision India Fund LPJul 2023 · 14 co-filersEnvision India Fund LPJul 2022 · 14 co-filersSky9 Capital Fund V, L.P.Jul 2022 · 10 co-filersSky9 Capital MVP Fund II, L.P.Jul 2022 · 11 co-filers

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