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JM

Joel Marcus

Director at TRex Holdings. Also a director at Proniras.

DirectorRoles at 2 startups
Updated Nov 9, 2026·Latest SEC filing Nov 26, 2024·Suggest an edit

About Joel Marcus

Form D filings for TRex Holdings in 2024 list Joel Marcus as director.

Form D filings also name Joel Marcus as a director at Proniras.

Joel Marcus first appears on SEC filings in 2017.

Experience

This experience comes from SEC filings. The years are when the filings name Joel Marcus in the role, so the role may have started earlier or lasted longer.

TRex Holdings Inc.
Director
2024 · South San Francisco, CA
Proniras Corp
Director
2017 – 2019 · Seattle, WA

Key Colleagues at Startups

The people Joel Marcus works with at each company, as listed on that company's latest Form D.

TRex Holdings Inc. · Form D, Nov 26, 2024
EP
Eric Pham
Director
TC
Travis Coy
Director
CG
MJ
M. Johnston Erwin Jr.
Chief Executive Officer and director
MR
Michael Ross
Director
PH
Peter Hirth
Director
EH
Eric Huang
Director
SM
MB
NT
Proniras Corp · Form D/A, Jul 11, 2019
TL
Thong Le
Chief Executive Officer and director
AX
Asish Xavier
Director
ME
M. Erwin
Director
CT
Christopher Toombs
Executive officer
SG
Steve Gillis
Director
DS
David Schubert
Executive officer and promoter
LR
Lindsay Rayle
Executive officer and promoter

Sources

  1. SECTRex Holdings Inc. Form D, filed Nov 26, 2024
  2. SECProniras Corp Form D/A, filed Jul 11, 2019