Investor · New York, NY
Boriana D. Karastoyanova
Open Boriana in the network graph →Filings
65
SEC Form D
Connections
158
co-filers
Capital
$19.8B
across filings
Active
Mar 2012
to Jan 2021
Most-connected co-filers (158)
Brian D. Kolin · New York, NY40 sharedPeter S. Song · New York, NY39 sharedMichael A. Petryczenko · New York, NY33 sharedStephen H. Can · New York, NY33 sharedDavid J. Corey · New York, NY25 sharedJoshua S. Blaine · New York, NY25 sharedAlex Liang · Santa Clara, CA25 sharedSundar Subramanian · Cambridge, MA25 sharedSophia D. Dilbert · Camana Bay, Cayman Islands25 sharedRavi Singh · Cambridge, MA25 sharedVerdun S. Perry · New York, NY25 sharedWilliam M. Kelly · New York, NY25 sharedSean Tan · Shanghai, Israel25 sharedStrategic Partners Fund Solutions Advisors L.P · New York, NY22 sharedStrategic Partners Fund Solutions Advisors L.P · New York, NY22 sharedRichard R. Donohue · Iowa City, IA20 sharedKevin W. Monson · Iowa City, IA20 sharedJeffrey D. Iverson · New York, NY20 sharedDavid H. Symons · New York, NY18 sharedTrafelet & Company Advisors, LLC · New York, NY18 sharedMark A. Bhupathi · New York, NY18 sharedRichard A. Schaffzin · Mountain View, CA18 sharedFrank Guglielmo · New York, NY17 sharedSteven A. Tananbaum · New York, NY15 shared
Recent filings (65)
Harvard Apparatus Regenerative Technology, Inc.Jan 2026 · 11 co-filers$2.0MreAlpha Tech Corp.Nov 2025 · 20 co-filers$3.9MNB Secondary Opportunities Offshore EU Fund VI SCSpNov 2025 · 17 co-filersNB Secondary Opportunities Offshore Fund VI - G LPNov 2025 · 20 co-filersNB Secondary Opportunities Fund VI - G LPNov 2025 · 23 co-filersNB Secondary Opportunities Offshore Fund VI - G LPNov 2025 · 20 co-filersNB Secondary Opportunities Fund VI - G LPNov 2025 · 23 co-filersNB Secondary Opportunities Offshore EU Fund VI SCSpNov 2025 · 17 co-filersNB Secondary Opportunities Fund VI LPOct 2025 · 23 co-filersNB Secondary Opportunities Offshore Fund VI LPOct 2025 · 22 co-filersNB Secondary Opportunities Fund VI LPOct 2025 · 23 co-filersNB Secondary Opportunities Offshore Fund VI LPOct 2025 · 22 co-filersCurewell Capital I, LPAug 2025 · 5 co-filersCurewell Capital I-A, LPAug 2025 · 5 co-filersreAlpha Tech Corp.Jul 2025 · 20 co-filers$5.3MHarvard Apparatus Regenerative Technology, Inc.Jul 2025 · 35 co-filers$2.0MreAlpha Tech Corp.Apr 2025 · 20 co-filers$6.3MHarvard Apparatus Regenerative Technology, Inc.Aug 2024 · 32 co-filers$1.5MBiostage, Inc.Apr 2023 · 32 co-filers$6.0MreAlpha Tech Corp.Apr 2023 · 23 co-filers$13.1MreAlpha Tech Corp.Apr 2023 · 23 co-filers$400.5MEMPERY TAX EFFICIENT, LPJan 2021 · 8 co-filersEMPERY TAX EFFICIENT, LPJan 2020 · 4 co-filersEMPERY TAX EFFICIENT, LPJan 2019 · 4 co-filersBiostage, Inc.Jul 2018 · 13 co-filers$900K
Derived from public SEC Form D (Reg D) filings; entities resolved probabilistically. See Boriana in the interactive graph →