Investor · LAKEWOOD, CO

Mark Bieler

Open Mark in the network graph →

Filings

144

SEC Form D

Connections

96

co-filers

Capital

$46.6M

across filings

Active

Oct 2012

to Jan 2025

Most-connected co-filers (96)

Donald Peskin · LAKEWOOD, CO92 shared Melvin P. Yellin · Golden, CO82 shared Steven P. Bucuvalas · Golden, CO71 shared Robert Q. Wyckoff, Jr · Stamford, CT48 shared Thomas H. Shrager · Stamford, CT48 shared John D. Spears · Stamford, CT48 shared Howard P. Culang · LAKEWOOD, CO37 shared George T. Hubbard · Greenwich, CT32 shared William H. Browne · Stamford, CT28 shared Gary Brach · LAKEWOOD, CO28 shared Navjot Athwal · San Francisco, CA20 shared Ann Russell · Greensboro, NC19 shared Graham H. Cook · Grand Cayman, Cayman Islands18 shared Ayush Parashar · San Mateo, CA18 shared Michael Weisz · New York, NY18 shared Leigh A. Ryals · Raleigh, NC18 shared Robert L. Windsor · Nottingham, MD18 shared Mike Asher · San Mateo, CA18 shared Chad Packard · CULVER CITY, CA17 shared Sean Keenan · San Mateo, CA17 shared Jay Hill · Stamford, CT16 shared Craig Huff · Largo, FL16 shared Stephen H. Brinck, Jr · Fort Worth, TX16 shared Roger D. Dewey · Raleigh, NC15 shared

Recent filings (144)

TWEEDY BROWNE INTERNATIONAL PARTNERS LLCJan 2026 · 5 co-filers TWEEDY BROWNE GLOBAL HIGH DIVIDEND PARTNERS LLCJan 2026 · 5 co-filers VANDERBILT PARTNERS LLCJan 2026 · 5 co-filers TBK PARTNERS LLCJan 2026 · 5 co-filers PHASE CHANGE SOFTWARE LLCJan 2026 · 7 co-filers$5.0M PHASE CHANGE SOFTWARE LLCJan 2025 · 9 co-filers$8.0M PHASE CHANGE SOFTWARE LLCJan 2025 · 9 co-filers$8.0M TWEEDY BROWNE INTERNATIONAL PARTNERS LLCJan 2025 · 14 co-filers TWEEDY BROWNE GLOBAL HIGH DIVIDEND PARTNERS LLCJan 2025 · 14 co-filers TBK PARTNERS LLCJan 2025 · 14 co-filers VANDERBILT PARTNERS LLCJan 2025 · 14 co-filers PHASE CHANGE SOFTWARE LLCJan 2025 · 9 co-filers$8.7M PHASE CHANGE SOFTWARE LLCJan 2025 · 9 co-filers$8.7M PHASE CHANGE SOFTWARE LLCNov 2024 · 10 co-filers$12.5M PHASE CHANGE SOFTWARE LLCNov 2024 · 10 co-filers$12.5M PHASE CHANGE SOFTWARE LLCMay 2024 · 11 co-filers$12.5M PHASE CHANGE SOFTWARE LLCMay 2024 · 11 co-filers$12.5M VANDERBILT PARTNERS LLCJan 2024 · 8 co-filers TWEEDY BROWNE INTERNATIONAL PARTNERS LLCJan 2024 · 8 co-filers TWEEDY BROWNE GLOBAL HIGH DIVIDEND PARTNERS LLCJan 2024 · 8 co-filers TBK PARTNERS LLCJan 2024 · 8 co-filers PHASE CHANGE SOFTWARE LLCDec 2023 · 13 co-filers$12.5M PHASE CHANGE SOFTWARE LLCDec 2023 · 13 co-filers$12.5M PHASE CHANGE SOFTWARE LLCApr 2023 · 16 co-filers$12.6M VANDERBILT PARTNERS LLCJan 2023 · 8 co-filers

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