Investor · Menlo Park, CA

Theodore Maidenberg

Open Theodore in the network graph →

Filings

65

SEC Form D

Connections

200

co-filers

Capital

$461.9M

across filings

Active

May 2023

to Sep 2025

Most-connected co-filers (200)

Seth Kay · Arlington, VA17 shared Joshua M. Hile · Issaquah, WA17 shared Stuart Blitz · New York, NY9 shared James Dunford · Los Angeles, CA9 shared Rod E. Mckeen · Scottsdale, AZ8 shared Arjun Sethi · San Francisco, CA7 shared Jonathan Hsu · San Francisco, CA7 shared Boris Revsin · Menlo Park, CA7 shared Doug Click · Scottsdale, AZ6 shared Mohammad Saad Alam · New York, NY6 shared Michael Narea · Dover, DE5 shared William Simon · NEW YORK, NY5 shared Benjamin Sun · NEW YORK, NY5 shared John P. Gregg · Skokie, IL5 shared Dionne G. Lewis · Skokie, IL5 shared Ralph Shearing · Vancouver, British Columbia, Canada4 shared Robert D. Maurer · Chicago, IL4 shared Ruben A. Alvidrez Ortega · Vancouver, British Columbia, Canada4 shared Roberto A. Guzman Garcia · Vancouver, British Columbia, Canada4 shared Rory S. Godinho · Vancouver, British Columbia, Canada4 shared ReSeed Limited Management, LLC · Niwot, CO4 shared Ramon A. Perez · Vancouver, British Columbia, Canada4 shared James M. Dunford · Los Angeles, CA4 shared Armando A. Alexandri · Vancouver, British Columbia, Canada4 shared

Recent filings (65)

CM Investments II LLC - CM 4448 Cali LLCDec 2025 · 3 co-filers$3.0M CM Investments 2022 LLC - CM Farmland Fund I LLCDec 2025 · 2 co-filers$4.0M CM Investments III LLC - CM Turnwell LLCDec 2025 · 5 co-filers$10.0M CM Investments III LLC - CM Pet Hotel SPV LLCDec 2025 · 5 co-filers$5.0M CM Investments III LLC - CM Interconnection IX4 LLCOct 2025 · 5 co-filers$3.0M CM Investments III LLC - CM Interconnection Fund I LLCOct 2025 · 5 co-filers$5.0M Tribe Natural Frontier Fund II, L.P.Oct 2025 · 14 co-filers$16.3M Tribe Natural Frontier Fund II, L.P.Oct 2025 · 14 co-filers$16.3M Tribe Capital Firstlook KRA-11, L.P.Sep 2025 · 14 co-filers$53.9M Tribe Capital Firstlook KRA-11, L.P.Sep 2025 · 14 co-filers$53.9M CM INVESTMENTS III LLC - CM ULTRA Fund III LLCAug 2025 · 4 co-filers$5.0M CM INVESTMENTS II LLC - CM CALI VPP LLCAug 2025 · 5 co-filers$3.0M CM INVESTMENTS II LLC - CM CALI VPP LLCAug 2025 · 5 co-filers$3.0M Sierra Holding Co LLCMay 2025 · 14 co-filers$8.0M Sierra Holding Co LLCMay 2025 · 14 co-filers$19.4M Koch, Inc.Mar 2025 · 55 co-filers$184.0M CM Trace QOF LLCFeb 2025 · 5 co-filers$3.5M CM Investments II LLC - CM Co-Invest II LLCFeb 2025 · 3 co-filers$5.5M CM Investments II LLC - CM Mosaic Fund II LLCFeb 2025 · 3 co-filers$5.0M CM Trace QOF LLCFeb 2025 · 5 co-filers$3.5M CM Investments II LLC - CM 4448 Cali LLCFeb 2025 · 3 co-filers$3.0M Tribe Capital Fund IV, L.P.Dec 2024 · 5 co-filers$350.0M Koch, Inc.Aug 2024 · 66 co-filers Time Therapeutics Inc.Jul 2024 · 8 co-filers$15.0M CM Investments 2022 LLC - CM MRF III LLCJan 2024 · 5 co-filers$1.0M

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