Investor · Columbus, OH

Christopher Birosak

Open Christopher in the network graph →

Filings

21

SEC Form D

Connections

104

co-filers

Capital

$4.3M

across filings

Active

Jul 2018

to Aug 2020

Most-connected co-filers (104)

Tyler A. Stowater · SIOUX FALLS, SD9 shared Robin Sears · Columbus, OH9 shared Brad Beasecker · Columbus, OH8 shared Ryan Mcgovern · New York, NY8 shared Brian Knox · Issaquah, WA6 shared E. D. Butler · Farmers Branch, TX5 shared Mark Rossi · Columbus, OH5 shared Ken D. Baker · Columbus, OH5 shared David E. Kim · New York, NY3 shared Paul Conley · San Diego, CA3 shared Matthew Pierson · Bedford, NH3 shared Xiao Tang · Brooklyn, NY3 shared Brian Johnson · Geneva, V83 shared Owen Davis · Brooklyn, NY3 shared John Drewry · San Diego, CA3 shared Margaret Curry · Detroit, MI3 shared Devon Cayer · San Diego, CA3 shared Hongwei Cheng · NEW YORK, NY3 shared James B. Moon · Lincoln, CA3 shared Craig Glidden · Detroit, MI3 shared Ryan K. Zinke · Elko, NV3 shared Jason Perez · Alpharetta, GA3 shared Lisette Howard · Encino, CA3 shared Patrick C. Morris · HOLLISTER, CA3 shared

Recent filings (21)

TireTutor, Inc.Jan 2026 · 2 co-filers$3.3M TireTutor, Inc.Aug 2025 · 8 co-filers$2.8M Star Mountain SBIC Fund II, LPJun 2025 · 20 co-filers Star Mountain SBIC Fund II, LPJun 2025 · 20 co-filers TireTutor, Inc.Jul 2024 · 8 co-filers$5.5M Star Mountain SBIC Fund II, LPJun 2024 · 20 co-filers Star Mountain SBIC Fund II, LPJun 2024 · 20 co-filers TireTutor, Inc.Jan 2024 · 5 co-filers$2.0M TradeX Markets Inc.Aug 2022 · 6 co-filers$2K TradeX Markets Inc.Aug 2022 · 2 co-filers$2K Structural Capital Co-Investment Splitter, LPAug 2022 · 13 co-filers Structural Capital Co-Investment, LPAug 2022 · 13 co-filers Sight4All, Inc.Aug 2020 · 20 co-filers$2.3M Sight4All, Inc.Aug 2020 · 20 co-filers$2.3M Sight4All, Inc.Jul 2020 · 11 co-filers$800K Infinite Arthroscopy Inc., LtdJul 2020 · 23 co-filers$4.8M Infinite Arthroscopy Inc., LtdSep 2019 · 15 co-filers$1.0M Lumerit Education, LLCJun 2019 · 26 co-filers$860K Infinite Arthroscopy Inc., LtdJun 2019 · 14 co-filers$4.5M Lumerit Education, LLCSep 2018 · 17 co-filers$690K Lumerit Education, LLCJul 2018 · 17 co-filers$500K Sight4All, Inc.May 2018 · 10 co-filers$1.5M Sight4All, Inc.May 2018 · 10 co-filers$1.5M Sight4All, Inc.Aug 2017 · 6 co-filers$1.5M

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