Investor · San Clemente, CA

John B. Elstrott, Jr

Open John in the network graph →

Filings

8

SEC Form D

Connections

30

co-filers

Capital

—

across filings

Active

Jan 2009

to Nov 2025

Most-connected co-filers (30)

Philip J. Hempleman · Stamford, CT4 shared Kevin C. Waterhouse · Garden City, NY4 shared Carter Cleveland · New York, NY4 shared Allison Finkelstein · Columbus, OH4 shared Mark Stabile · George Town, Grand Cayman, Cayman Islands4 shared Barry Gainsburg · Plantation, FL4 shared Spencer J. Hempleman · Stamford, CT4 shared Ardsley Partners I GP, LLC · Stamford, CT4 shared Ardsley Advisory Partners LP · Stamford, CT4 shared Mark Hotchin · Wilmington, DE4 shared Bill R. Sanford · Frisco, TX2 shared Gary Hirshberg · Washington, Washington, D.C.2 shared Steve Demos · San Clemente, CA2 shared Kent Holden · Greenwich, CT2 shared Jeff Sturgeon · Columbus, OH2 shared Greg Moore · Columbus, OH2 shared Frederic De Mevius · Brussels, C92 shared Gregg B. Dunn · San Clemente, CA2 shared Mary S. Carpenito · San Clemente, CA2 shared G. S. Greenburg · Seattle, WA2 shared Rivadavia C. De Gusmao · San Clemente, CA2 shared Jack Peurach · Richmond, CA2 shared Marilyn F. Hamilton · Richmond, CA2 shared Ashley Le Feuvre · St. Helier, Y92 shared

Recent filings (8)

Ardsley Partners Fund II, L.P.Nov 2025 · 9 co-filers Ardsley Duckdive Fund, L.P.Nov 2025 · 9 co-filers Ardsley Sustainable Opportunities Fund, L.P.Nov 2025 · 9 co-filers Ardsley World Information Technology Fund, L.P.Nov 2025 · 9 co-filers SAMBAZON INCFeb 2012 · 19 co-filers$3.5M SAMBAZON INCJan 2012 · 19 co-filers$6.0M SAMBAZON INCJan 2009 · 11 co-filers$17.5M SAMBAZON INCJan 2009 · 11 co-filers$4.0M

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