Investor · Lexington, MA

Julius S. Knowles

Open Julius in the network graph →

Filings

18

SEC Form D

Connections

18

co-filers

Capital

$29.5M

across filings

Active

Dec 2015

to Oct 2022

Most-connected co-filers (18)

Roger Kitterman · Waltham, MA3 shared Martin J. Heidecker · Malvern, PA2 shared Barbara Fox · Waltham, MA2 shared Jasbir S. Seehra · Lexington, MA1 shared Nima W. Farzan · San Diego, CA1 shared Carl M. Berke · Cambridge, MA1 shared Mass General Brigham Gp Iii, Llc · Cambridge, MA1 shared Claudia Ordonez · Lexington, MA1 shared Jenn Lachey · Lexington, MA1 shared Keith Regnante · Lexington, MA1 shared Zafrira Avnur · Bozeman, MT1 shared Alon Lazarus · Cambridge, MA1 shared John Edwards · Lexington, MA1 shared Meredith Fisher · Seattle, WA1 shared Murthy Chavali · Somerville, MA1 shared Mass General Brigham Gp Iii, Llc · Cambridge, MA1 shared Carl L. Gordon · New York, NY1 shared Ran S. Nussbaum · Lexington, MA1 shared

Recent filings (18)

20 Bio, Inc.Feb 2026 · 1 co-filer$6.0M Mass General Brigham Fund III, L.P.Feb 2021 · 9 co-filers$250.0M Mass General Brigham Fund III, L.P.Feb 2021 · 9 co-filers$250.0M Keros Therapeutics, Inc.Mar 2020 · 18 co-filers$56.0M Keros Therapeutics, Inc.Mar 2020 · 18 co-filers$56.0M Tilos Therapeutics, Inc.Sep 2017 · 7 co-filers$4.0M Tilos Therapeutics, Inc.Sep 2016 · 7 co-filers$1.5M Tilos Therapeutics, Inc.Sep 2016 · 7 co-filers$1.5M

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