Investor · Newton, MA

James Topper

Open James in the network graph →

Filings

110

SEC Form D

Connections

553

co-filers

Capital

$150.0M

across filings

Active

Jan 2010

to Dec 2017

Most-connected co-filers (553)

Jay Lichter · La Jolla, CA15 shared Shelley Chu · La Jolla, CA15 shared Patrick J. Heron · Dublin, Ireland15 shared Angie L. You · South San Francisco, CA12 shared Richard M. Heyman · South San Francisco, CA12 shared James Brush · Mountain View, CA11 shared Spencer Nam · BOSTON, MA10 shared Edward Mcbride · New York, NY10 shared Randy Fertel · New Orleans, LA10 shared Daniel Gay · BOSTON, MA10 shared Tae Heum Jeong · BOSTON, MA10 shared James J. Devenny · RICHARDSON, TX10 shared Frank B. Friedler, Iii · New Orleans, LA9 shared Nader J. Naini · SEATTLE, WA9 shared Stan L. Shelton · Boston, MA9 shared Isatou B. Smith · Grand Cayman, Cayman Islands9 shared Richard R. Lindsey · Boston, MA9 shared Rick Nagel · Oklahoma City, OK9 shared Alan D. Frazier · Seattle, WA9 shared Jonathon Gay · BOSTON, MA9 shared Lucas F. Turton · Boston, MA9 shared Savvas N. Savvinidis · NEW YORK, NY9 shared Hemal V. Thakore · Central, Hong Kong9 shared Nathan J. Every · SEATTLE, WA9 shared

Recent filings (110)

Dry Creek Surgery Center /CO/ LLCJan 2026 · 5 co-filers$100K Dry Creek Surgery Center /CO/ LLCDec 2025 · 14 co-filers$100K Opa Group LPSep 2025 · 4 co-filers Enlaza Therapeutics, Inc.Sep 2025 · 23 co-filers$15.0M Frazier Life Sciences XII, L.P.Mar 2025 · 5 co-filers Opa Group LPSep 2024 · 4 co-filers Enlaza Therapeutics, Inc.Aug 2024 · 23 co-filers$110.0M Opa Group LPSep 2023 · 4 co-filers Enlaza Therapeutics, Inc.Nov 2022 · 20 co-filers$61.3M Enlaza Therapeutics, Inc.Oct 2022 · 20 co-filers Enlaza Therapeutics, Inc.Oct 2022 · 20 co-filers$312K Opa Group LPOct 2022 · 4 co-filers Anatomie CorpMar 2022 · 11 co-filers$3.0M Frazier Life Sciences XI, L.P.Mar 2022 · 5 co-filers$960.0M KSV Beauty, LLCJan 2022 · 10 co-filers$10.3M Opa Group LPOct 2021 · 4 co-filers ALPINE IMMUNE SCIENCES, INC.Sep 2021 · 21 co-filers$91.0M Enlaza Therapeutics, Inc.Aug 2021 · 20 co-filers KSV Machina, LLCAug 2021 · 11 co-filers$19.0M Enlaza Therapeutics, Inc.Jun 2021 · 20 co-filers KSV Europa, LLCApr 2021 · 11 co-filers$8.0M Enlaza Therapeutics, Inc.Mar 2021 · 20 co-filers$21.3M Seraxis Holdings, Inc.Feb 2021 · 11 co-filers$40.0M Ancora Catalyst SPV I SPC Ltd. - Segregated Portfolio ENov 2020 · 11 co-filers KSV Europa, LLCNov 2020 · 11 co-filers$6.3M

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