Investor · Watertown, MA
Jonathan Kagan
Open Jonathan in the network graph →Capital
$162.9M
across filings
Active
Dec 2022
to Aug 2025
Most-connected co-filers (73)
Andrew Bellinger · Watertown, MA9 sharedNick Seaver · Watertown, MA4 sharedAlan Ezekowitz · Cambridge, MA4 sharedSteven Altschuler · New York, NY4 sharedWilliam Weatherford · Tampa, FL3 sharedSamantha A. Lomow · Pawtucket, RI3 sharedChris Rowe · Coral Springs, FL3 sharedJoseph Y. Bae · New York, NY3 sharedHenry R. Kravis · New York, NY3 sharedThomas A. Sellars · Milwaukee, WI3 sharedJohn C. Sellars · Milwaukee, WI3 sharedMartyn R. Davis · Milwaukee, WI3 sharedJeffrey R. Porter · Milwaukee, WI3 sharedJerry R. Ballas · Milwaukee, WI3 sharedLincoln Samelson · Colorado Springs, CO3 sharedSteve Pei · Los Angeles, CA3 sharedDavid E. Lundgren · Milwaukee, WI3 sharedPaul D. Grangaard · Bayport, MN3 sharedGeorge Roberts · NEW YORK, NY3 sharedJean-Emmanuel S. Losi · Philadelphia, PA3 sharedLionel S. Mouchabec · Philadelphia, PA3 sharedMaxime S. Seroussi · Philadelphia, PA3 sharedAlphaverse Capital LLC · MIAMI, FL3 sharedGregory E. Larson · Milwaukee, WI3 shared Recent filings (14)
Corner Therapeutics, Inc.Oct 2025 · 15 co-filers$16.8MCorner Therapeutics, Inc.Oct 2025 · 15 co-filers$16.8MCorner Therapeutics, Inc.Aug 2025 · 23 co-filers$63.5MCorner Therapeutics, Inc.Aug 2025 · 23 co-filers$63.5MSellars Absorbent Materials, Inc.Jul 2025 · 38 co-filers$4.9MInception Studio Capital Fund I, LPMay 2025 · 9 co-filers$10.0MCorner Therapeutics, Inc.Apr 2025 · 23 co-filers$53.7MCorner Therapeutics, Inc.Apr 2025 · 23 co-filers$53.7MInception Studio Capital Fund I, LPMay 2024 · 9 co-filers$10.0MSellars Absorbent Materials, Inc.May 2024 · 40 co-filers$4.9MCorner Therapeutics, Inc.Apr 2024 · 16 co-filers$50.9MCorner Therapeutics, Inc.Apr 2024 · 16 co-filers$50.9MNew Game Plus, Inc.Jul 2023 · 2 co-filers$50KSellars Absorbent Materials, Inc.Dec 2022 · 31 co-filers$3.9MNew Game Plus, Inc.Dec 2022 · 2 co-filers$65KNew Game Plus, Inc.Dec 2022 · 2 co-filers$65KAURANIA RESOURCES LTD.Apr 2021 · 17 co-filers$1.6MAURANIA RESOURCES LTD.Apr 2021 · 17 co-filers$1.6MMarlborough Software Development Holdings Inc.Oct 2012 · 5 co-filers$5.0M Derived from public SEC Form D (Reg D) filings; entities resolved probabilistically. See Jonathan in the interactive graph →