Investor · Boulder, CO

Matthew Opperman

Open Matthew in the network graph →

Filings

24

SEC Form D

Connections

110

co-filers

Capital

$4.5M

across filings

Active

Jul 2018

to Jul 2024

Most-connected co-filers (110)

Edward Mainous · Boulder, CO13 shared Michael Marks · Menlo Park, CA9 shared Martin Blair · SAN DIEGO, CA7 shared C. M. Stout · SAN FRANCISCO, CA7 shared Robert C. Desmarais · BEDMINSTER, NJ7 shared Mark R. Poff · San Francisco, CA7 shared Caroline Xie · Mountain View, CA7 shared Wesley E. Schultz · Alexandria, MN7 shared Rhonda Jordan · Boulder, CO7 shared Gerald L. Van Horn · Greenwood Village, CO7 shared OrbiMed Advisors LLC · New York, NY7 shared Alan Heppenstall · Mountain View, CA7 shared Howard Steyn · Boulder, CO7 shared Ben Nelson · San Francisco, CA7 shared Mark L. Lane · Greenwood Village, CO7 shared Alan I. Mattamana · West Hartford, CT7 shared Kent W. Gilges · Exeter, NH6 shared C. S. Stevens · New York, NY6 shared Paul J. Young · Exeter, NH6 shared W. C. Neild · New York, NY6 shared Geoffrey C. Hsu · New York, NY6 shared Carl L. Gordon · New York, NY6 shared Sven H. Borho · New York, NY6 shared Stavros Koutsantonis · Exeter, NH6 shared

Recent filings (24)

OrbiMed Partners II, L.P.Jul 2025 · 24 co-filers OrbiMed Partners II, L.P.Jul 2024 · 24 co-filers Conservation Resource Capital VI, L.P.Jul 2024 · 11 co-filers$45.9M OrbiMed Partners II, L.P.Jul 2023 · 24 co-filers Conservation Resource Capital VI, L.P.Jun 2023 · 11 co-filers$500.0M Conservation Resource Capital VI, L.P.Aug 2022 · 11 co-filers$500.0M OrbiMed Partners II, L.P.Jul 2022 · 24 co-filers Conservation Resource Capital VI, L.P.Jun 2022 · 13 co-filers$500.0M ILY Holdings, LLCDec 2021 · 26 co-filers$2.1M ILY Holdings, LLCOct 2021 · 23 co-filers$5.7M OrbiMed Partners II, L.P.Jul 2021 · 21 co-filers Eclipse Gold Mining CorpJan 2021 · 17 co-filers$1.5M ILY Holdings, LLCJul 2020 · 20 co-filers$13.8M Eclipse Gold Mining CorpJul 2020 · 19 co-filers$193K OrbiMed Partners II, L.P.Jul 2020 · 21 co-filers Guardian Capital Partners Fund III, L.P.Jul 2020 · 10 co-filers ILY Holdings, LLCJun 2020 · 20 co-filers$3.0M Conservation Resource Capital VI, L.P.Jun 2020 · 14 co-filers$500.0M ILY Holdings, LLCApr 2020 · 20 co-filers$1.0M Guardian Capital Partners Fund III, L.P.Mar 2020 · 10 co-filers OrbiMed Partners II, L.P.Jul 2019 · 12 co-filers Conservation Resource Capital VI, L.P.Mar 2019 · 14 co-filers$500.0M Guardian Capital Partners Fund III, L.P.Mar 2019 · 8 co-filers Conservation Forestry Capital V, L.P.Jul 2018 · 14 co-filers$121.2M

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