People · Operator

Matthew Porteus

Named in public records as an officer, director or promoter · active 2021–2025 · Biotechnology, Pharma

2
Companies
2
Filings
$155.7M
Combined raised · real
Serial
Operator type
Companies
CompanyRoleSectorStageRaised · realValue · estTied
Graphite Bio, Inc.BiotechnologySeries D+$150.7M$4.9B2021
Kamau Therapeutics, Inc.PharmaSeries A$5.0M$17.3M2025
Operator network

Matthew Porteus 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.

Jerel Davis · 13 companies · 1 sharedJerel DavisCarlo Rizzuto · 7 companies · 1 sharedCarlo RizzutoAbraham Bassan · 4 companies · 1 sharedAbraham BassanJosh Lehrer · 2 companies · 1 sharedJosh LehrerKatherine Stultz · 2 companies · 1 sharedKatherine StultzPerry Karsen · 2 companies · 1 sharedPerry KarsenJoe Jimenez · 1 companies · 1 sharedJoe JimenezMaria Grazia Roncarolo · 1 companies · 1 sharedMaria Grazia Ronc…Philip Gutry · 1 companies · 1 sharedPhilip GutryRaymond Kelleher · 4 companies · 1 sharedRaymond KelleherValentin Barsan · 2 companies · 1 sharedValentin BarsanNess Bermingham · 1 companies · 1 sharedNess BerminghamGraphite Bio, Inc. · $150.7M raisedGraphite Bio, Inc.Kamau Therapeutics, Inc. · $5.0M raisedKamau Therapeutics, I…Matthew PorteusMP
Matthew Porteus Company Co-operator (ring = serial)Hover to isolate ties · click to open
Co-operators (shared boards)

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

OperatorSharedTheir companies
Jerel Davis113
Carlo Rizzuto17
Raymond Kelleher14
Abraham Bassan14
Josh Lehrer12
Perry Karsen12
Valentin Barsan12
Katherine Stultz12
Maria Grazia Roncarolo11
Ness Bermingham11
Philip Gutry11
Joe Jimenez11

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.