People · Operator

D. Jeffrey Harder

Named in public records as an officer, director or promoter · active 2022–2025 · Energy / Climate, Mining & Resources

2
Companies
2
Filings
$10.4M
Combined raised · real
Serial
Operator type
Companies
CompanyRoleSectorStageRaised · realValue · estTied
NG Energy International Corp.Energy / ClimateSeries A$9.5M$34.0M2022
Argenta Silver Corp.Mining & ResourcesPre-Seed$931K$1.8M2025
Operator network

D. Jeffrey Harder at the center, the companies they're named on, and every other operator named alongside them — an interlock map of shared founding teams, boards and funds. Name-matched, so treat as a research lead.

Gordon Keep · 6 companies · 1 sharedGordon KeepSerafino Iacono · 4 companies · 1 sharedSerafino IaconoBrian Paes-Braga · 3 companies · 1 sharedBrian Paes-BragaBrian O'Neill · 2 companies · 1 sharedBrian O'NeillPatricia Herrera Paba · 2 companies · 1 sharedPatricia Herrera …Donald Sewell · 1 companies · 1 sharedDonald SewellFederico Restrepo-Solano · 1 companies · 1 sharedFederico Restrepo…Humberto Calderon Berti · 1 companies · 1 sharedHumberto Calderon…Jorge Fonseca Chaumer · 1 companies · 1 sharedJorge Fonseca Cha…Marianella Bernal Parada · 1 companies · 1 sharedMarianella Bernal…Ronald Pantin · 1 companies · 1 sharedRonald PantinAaron Triplett · 4 companies · 1 sharedAaron TriplettGeir Jeffrey Liland · 1 companies · 1 sharedGeir Jeffrey Lila…Joaquin Marias · 1 companies · 1 sharedJoaquin MariasMichelle Borthwick · 1 companies · 1 sharedMichelle BorthwickNicolas Jeffrey Bendersky · 1 companies · 1 sharedNicolas Jeffrey B…Travis Jeffrey Musgrave · 1 companies · 1 sharedTravis Jeffrey Mu…NG Energy International Corp. · $9.5M raisedNG Energy Internation…Argenta Silver Corp. · $0.9M raisedArgenta Silver Corp.D. Jeffrey HarderDH
D. Jeffrey Harder Company Co-operator (ring = serial)Hover to isolate ties · click to open
Co-operators (shared boards)

People named alongside D. Jeffrey Harder on the same companies — an interlock signal (shared founding team, board, or fund). Name-matched, so verify before acting.

OperatorSharedTheir companies
Gordon Keep16
Serafino Iacono14
Aaron Triplett14
Brian Paes-Braga13
Patricia Herrera Paba12
Brian O'Neill12
Jorge Fonseca Chaumer11
Ronald Pantin11
Donald Sewell11
Humberto Calderon Berti11
Marianella Bernal Parada11
Federico Restrepo-Solano11
Nicolas Jeffrey Bendersky11
Geir Jeffrey Liland11
Travis Jeffrey Musgrave11
Joaquin Marias11
Michelle Borthwick11

People are matched by normalized name across records; a common name may merge distinct individuals. Treat as a research lead, the same way modeled valuations are directional, not quoted.