Investor · Cambridge, MA

Ambar Bhattacharyya

Open Ambar in the network graph →

Filings

23

SEC Form D

Connections

126

co-filers

Capital

$478.7M

across filings

Active

Jul 2016

to Feb 2026

Most-connected co-filers (126)

Andy Slavitt · Minneapolis, MN8 shared Iyah Romm · New York, NY7 shared Daniel Doctoroff · New York, NY7 shared Chris Bischoff · New York, NY4 shared Devlin Dwyer · Atlanta, GA4 shared Elliot Geidt · Woodside, CA4 shared Wendy Chow · Brooklyn, NY4 shared William T. Collins · Sidney, British Columbia, Canada3 shared Mitch Lasky · Oakland, CA3 shared David A. Altshuler · New York, NY3 shared Robert P. Spitler · Boca Raton, FL3 shared Peter C. Aberg · New York, NY3 shared Thomas P. Lloyd · Baltimore, MD3 shared Mouli Ramani · Lowell, MA3 shared Gabriel A. Morris · Baltimore, MD3 shared Kristen M. Leopold · New York, NY3 shared Gleb Yushin · Alameda, CA3 shared Steven M. Felsenthal · New York, NY3 shared G. W. Andrews · Baltimore, MD3 shared Gregory M. Barr · EVANSTON, IL3 shared Joe J. Summitt · Sevierville, TN3 shared Cortney R. Johnson · Austin, TX3 shared Conley T. Murrell · Sevierville, TN3 shared Ronald Ward · Redmond, WA3 shared

Recent filings (23)

BlueFlag Security Inc.Feb 2026 · 2 co-filers$10.0M Tulea Health, Inc.Oct 2025 · 10 co-filers$15.0M Tulea Health, Inc.Oct 2025 · 10 co-filers$15.0M Daymark Health, Inc.Sep 2025 · 11 co-filers$26.0M Daymark Health, Inc.Sep 2025 · 11 co-filers$26.0M Daymark Health, Inc.Mar 2025 · 11 co-filers$6.0M Daymark Health, Inc.Mar 2025 · 11 co-filers$6.0M Cityblock Health, Inc.Sep 2021 · 25 co-filers$400.0M Cityblock Health, Inc.Sep 2021 · 25 co-filers$400.0M Atlas Income Fund III, LLCApr 2021 · 10 co-filers$10.0M Campbell Equity Alpha Onshore Fund, LPApr 2021 · 15 co-filers Cityblock Health, Inc.Mar 2021 · 28 co-filers$192.3M Cityblock Health, Inc.Dec 2020 · 29 co-filers$160.0M Cityblock Health, Inc.Jul 2020 · 23 co-filers$54.0M Campbell Equity Alpha Onshore Fund, LPMay 2020 · 15 co-filers Campbell Equity Alpha Onshore Fund, LPApr 2019 · 15 co-filers Pittsburgh Income Fund II, LLCApr 2019 · 10 co-filers$3.1M Cityblock Health, Inc.Apr 2019 · 13 co-filers$65.1M Artemis Health Inc.Mar 2019 · 11 co-filers$25.0M Artemis Health Inc.Mar 2019 · 11 co-filers$25.0M IronCore Labs, Inc.Jun 2018 · 8 co-filers$1.5M Cityblock Health, Inc.May 2018 · 11 co-filers$20.8M Orionis Biosciences LLCApr 2018 · 8 co-filers$25.5M Cityblock Health, Inc.Jan 2018 · 13 co-filers$6.1M Artemis Health Inc.Dec 2017 · 20 co-filers$22.7M

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