Investor · Eden Prairie, MN

Jeffrey S. Mathiesen

Open Jeffrey in the network graph →

Filings

104

SEC Form D

Connections

372

co-filers

Capital

$16.6M

across filings

Active

Apr 2018

to Jan 2021

Most-connected co-filers (372)

Paul S. Buckman · Eden Prairie, MN21 shared David Rosen · Baltimore, MD20 shared Mark S. Christianson · Eden Prairie, MN18 shared Christopher A. Moore · Houston, TX18 shared David A. Rosa · Eden Prairie, MN16 shared Suraj S. Kalia · Eden Prairie, MN13 shared Andrew Taffin · Englewood, NJ12 shared Steven A. Pfeifer · Houston, TX12 shared Michael T. Cullen · WACONIA, MN11 shared Marc D. Valdes · New York, NY10 shared Wei E. Zheng · Shannon, Israel10 shared Matt V. Auriemma · MIAMI, FL10 shared Jack E. Kerrigan · Fulton, MD10 shared Kevin Cottrell · New York, NY10 shared Ho Kei Li · Central, Hong Kong10 shared Eric T. Bednash · Fulton, MD10 shared Jonathan T. Halstuch · Fulton, MD10 shared Stephen E. Fredrick · Fulton, MD10 shared Jonathan Schlafman · New York, NY10 shared Christopher Lasusa · New York, NY10 shared Steve A. Mertens · Eden Prairie, MN10 shared Georgia N. Prinsloo · Grand Cayman, Cayman Islands10 shared KCL Capital, L.P · New York, NY10 shared KCL Capital Fund GP, L.P · New York, NY10 shared

Recent filings (104)

PO&G Resources Fund II, LPMar 2025 · 2 co-filers PO&G Resources Fund, LPMar 2025 · 8 co-filers HELIUS MEDICAL TECHNOLOGIES, INC.Jan 2025 · 17 co-filers$3.7M NEUROONE MEDICAL TECHNOLOGIES CorpAug 2024 · 15 co-filers$276K NEUROONE MEDICAL TECHNOLOGIES CorpAug 2024 · 15 co-filers$276K PO&G Resources Fund, LPMar 2024 · 8 co-filers PO&G Resources Fund II, LPMar 2024 · 2 co-filers Nextron Holdings LtdFeb 2024 · 7 co-filers$5.3M Rowe Research, LLCFeb 2024 · 2 co-filers$1.0M Panbela Therapeutics, Inc.Jan 2024 · 23 co-filers Panbela Therapeutics, Inc.Jan 2024 · 23 co-filers Revily, Inc.Dec 2023 · 20 co-filers$2.0M Revily, Inc.Nov 2023 · 20 co-filers$2.0M Panbela Therapeutics, Inc.Nov 2023 · 23 co-filers Panbela Therapeutics, Inc.Nov 2023 · 23 co-filers Rowe Research, LLCApr 2023 · 2 co-filers$4.0M PO&G Resources Fund II, LPMar 2023 · 2 co-filers PO&G Resources Fund, LPMar 2023 · 8 co-filers Rowe Research, LLCSep 2022 · 2 co-filers CC-WFC Office Opportunities, LLCSep 2022 · 5 co-filers$20.0M Panbela Therapeutics, Inc.Jun 2022 · 17 co-filers Panbela Therapeutics, Inc.Jun 2022 · 17 co-filers Rowe Research, LLCMay 2022 · 2 co-filers$500K Rowe Research, LLCMay 2022 · 2 co-filers$800K Nextron Holdings LtdMay 2022 · 7 co-filers$2.3M

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