Investor · MADISON, WI

Mark Bakken

Open Mark in the network graph →

Filings

125

SEC Form D

Connections

608

co-filers

Capital

$136.6M

across filings

Active

Apr 2015

to Mar 2026

Most-connected co-filers (608)

Lee H. Roberts · Raleigh, NC19 shared Marc L. Collins · West Palm Beach, FL17 shared Malek Yala · Chicago, IL16 shared Ben Terk · New York, NY14 shared SharpVue 27609 Capital, LLC · Raleigh, NC14 shared Imran Ahmad · Chicago, IL13 shared Clark Emerick · Tacoma, WA13 shared Rohit Sah · New York, NY11 shared David P. Paul · Bethesda, MD11 shared Roger R. Wyse · Boulder, CO10 shared Bryan L. Roberts · Boulder, CO10 shared Robert O'Leary · Los Angeles, CA10 shared John R. Stuelpnagel · Boulder, CO10 shared Armen `. Panossian · Los Angeles, CA9 shared Stephen A. Johnston · Phoenix, AZ9 shared Michael A. Sanchez · Jacksonville, FL8 shared Walter Segsworth · Vancouver, British Columbia, Canada8 shared Bruce Mcleod · Vancouver, British Columbia, Canada8 shared Roger Monteforte · New York, NY8 shared Shannon Fake · RICHMOND, VA8 shared Ryan J. Mcintyre · Boulder, CO8 shared Kirk Tattersall · RICHMOND, VA8 shared James Mallory · RICHMOND, VA8 shared Ashley Long · RICHMOND, VA8 shared

Recent filings (125)

Amulet, PBCMar 2026 · 2 co-filers$1.0M DV Energy Special Opportunities Fund I, LPOct 2025 · 17 co-filers$15.6M Medsense Health, Inc.Oct 2025 · 11 co-filers$4.2M Medsense Health, Inc.Oct 2025 · 11 co-filers$4.2M Peerbridge Health, Inc.Aug 2025 · 10 co-filers$8.0M Peerbridge Health, Inc.Aug 2025 · 10 co-filers$8.0M Slot Check, Inc.Aug 2025 · 7 co-filers$500K Slot Check, Inc.Aug 2025 · 7 co-filers$500K FindSpotz Inc.Jun 2025 · 7 co-filers$1.4M FindSpotz Inc.Jun 2025 · 7 co-filers$1.4M KeyCare, Inc.Apr 2025 · 14 co-filers$21.8M KeyCare, Inc.Apr 2025 · 14 co-filers$21.8M 1607 Capital Domestic Equity Fund LPFeb 2025 · 23 co-filers Slot Check, Inc.Jan 2025 · 8 co-filers$1.2M RehabPath Inc.Oct 2024 · 4 co-filers$5.0M EarthOptics, Inc.Sep 2024 · 41 co-filers$25.0M EarthOptics, Inc.Sep 2024 · 41 co-filers DVPI Direct Opportunities, LLCAug 2024 · 21 co-filers Medsense Health, Inc.Aug 2024 · 11 co-filers$1.0M Medsense Health, Inc.Aug 2024 · 11 co-filers$1.0M Peerbridge Health, Inc.Jun 2024 · 14 co-filers$19.3M GrayBul Reems Creek LPApr 2024 · 18 co-filers$20.4M GrayBul Reems Creek LPApr 2024 · 18 co-filers$20.4M Spoke Westmont Apartments, LLCMar 2024 · 13 co-filers$3.0M HealthX Wisconsin Fund, L.P.Mar 2024 · 4 co-filers$30.0M

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