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Plexium, Inc.

Updated Oct 29, 2026·Latest SEC filing Aug 25, 2025·Suggest an edit

About Plexium

Plexium is a private company based in San Diego, California. It has reported $60,115,703 raised in one offering on Form D since August 2025.

Funding Rounds (SEC Form D)

First saleFiled with SECAmount soldInvestorsAvg. checkTermsFiling
Jul 14, 2025Aug 25, 2025$60,115,703fully sold20$3.0MEquityRule 506(b)Form D ↗

First sale is the date the first investor in the offering committed to invest. Companies must file Form D within 15 days of that date, so filing dates run later.

Leadership Team

Executive officers and directors listed on Plexium's Form D filed Aug 25, 2025.

Serge Messerlian
Serge Messerlian
Director
Also a board director at Auron Therapeutics.
CC
PR
LC
Leon Chen
Director
RH
Rob Hopfner
Director
MM
Michael Martin
Executive officer and director
MG
Michael Grey
Director
SM
Stephen Mullennix
Executive officer

Sources

  1. SECPlexium, Inc. filing history