COX JOHN

PrivateCIK: 1498428

Location

WALTHAM, MA

Name & Role	Position	Tenure	Holdings
SIGILON THERAPEUTICS, INC.	—	Since Dec 2020	—
DYNE THERAPEUTICS, INC.	CEO & President	Since Mar 2026	—
REPLIGEN CORP	—	Since May 2019	—

SIGILON THERAPEUTICS, INC.

Position—

TenureSince Dec 2020

Holdings—

DYNE THERAPEUTICS, INC.

PositionCEO & President

TenureSince Mar 2026

Holdings—

Position—

TenureSince May 2019

Holdings—