Investor · New Berlin, WI

Mark R. Zellmer

Open Mark in the network graph →

Filings

7

SEC Form D

Connections

21

co-filers

Capital

$3.6M

across filings

Active

Nov 2015

to Nov 2015

Most-connected co-filers (21)

Ramona Bowry · New York, NY3 shared John F. Syburg · Brookfield, WI3 shared Steven Zamsky · Westport, CT3 shared Steven Rosen · Delray, FL3 shared Blackthorne Partners Ltd · Brookfield, WI3 shared Caleb Edwards · Grandview, MO2 shared Aaron Leatherdale · Kansas City, MO2 shared Anu Hariharan · Hillsborough, CA2 shared Thomas Kintis · Waukesha, WI2 shared Larry Bruce · San Rafael, CA2 shared Bennet P. Tchaikovsky · Irvine, CA1 shared Yue Guo · Rancho Cucamonga, CA1 shared Yi Yang · Rancho Cucamonga, CA1 shared Steve Balistreri · Delafield, WI1 shared Franklin D. Rasmussen · West Bend, WI1 shared Michael D. Allen · Cedarburg, WI1 shared Mary T. Cajski · Waukesha, WI1 shared Chenlong Tan · Las Vegas, NV1 shared Patrick Pfersch · Waukesha, WI1 shared Steven J. Balistreri · Brookfield, WI1 shared Hanxi Li · Rancho Cucamonga, CA1 shared

Recent filings (7)

iPower Inc.Jan 2026 · 4 co-filers$28.2M iPower Inc.Dec 2025 · 14 co-filers$7.2M MCPC, LLCNov 2015 · 7 co-filers$3.6M MCPC, LLCNov 2015 · 7 co-filers$3.6M MCPL, LLCSep 2014 · 4 co-filers$2.2M BLACKTHORNE VENTURE FUND LLCAug 2010 · 6 co-filers$300K Blackthorne Healthcare IT Partners, LLCJan 2010 · 7 co-filers$3.0M BLACKTHORNE VENTURE FUND LLCMar 2009 · 5 co-filers$2.0M

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