People · Operator

Maria Siambekos

Named in public records as an officer, director or promoter · active 2022–2024 · Other Health Care, Software / Tech

2
Companies
3
Filings
$40.9M
Combined raised · real
Serial
Operator type
Companies
CompanyRoleSectorStageRaised · realValue · estTied
ArborMetrix, Inc.Other Health CareSeries A$31.2M$38.4M2022
NAVV Systems, Inc.Software / TechSeries A$9.7M$9.7M2022
Operator network

Maria Siambekos 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.

Mark McClellan · 3 companies · 1 sharedMark McClellanAnthony Grover · 2 companies · 1 sharedAnthony GroverTimothy Peterson · 2 companies · 1 sharedTimothy PetersonBrett Furst · 1 companies · 1 sharedBrett FurstChristian Birkmeyer · 1 companies · 1 sharedChristian Birkmey…Gary Kendra · 1 companies · 1 sharedGary KendraGreg Erber · 1 companies · 1 sharedGreg ErberJeffrey Pagnini · 1 companies · 1 sharedJeffrey PagniniJohn Birkmeyer · 1 companies · 1 sharedJohn BirkmeyerJohn Birkmeyer, M.D. · 1 companies · 1 sharedJohn Birkmeyer, M…Kurt Skifstad · 1 companies · 1 sharedKurt SkifstadSteven Richvalsky · 1 companies · 1 sharedSteven RichvalskySteve Richvalsky · 1 companies · 1 sharedSteve RichvalskyTimothy Petersen · 9 companies · 2 sharedTimothy PetersenPaul McCreadie · 6 companies · 2 sharedPaul McCreadieDaniel Siegal · 2 companies · 1 sharedDaniel SiegalJohn Groetelaars · 1 companies · 1 sharedJohn GroetelaarsPaul Zieske · 1 companies · 1 sharedPaul ZieskeArborMetrix, Inc. · $31.2M raisedArborMetrix, Inc.NAVV Systems, Inc. · $9.7M raisedNAVV Systems, Inc.Maria SiambekosMS
Maria Siambekos Company Co-operator (ring = serial)Hover to isolate ties · click to open
Co-operators (shared boards)

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

OperatorSharedTheir companies
Timothy Petersen29
Paul McCreadie26
Mark McClellan13
Timothy Peterson12
Daniel Siegal12
Anthony Grover12
John Birkmeyer11
Kurt Skifstad11
Steve Richvalsky11
John Groetelaars11
Paul Zieske11
Jeffrey Pagnini11
Greg Erber11
John Birkmeyer, M.D.11
Brett Furst11
Gary Kendra11
Christian Birkmeyer11
Steven Richvalsky11

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.