Investor · Bethesda, MD

Vivian Riefberg

Open Vivian in the network graph →

Filings

3

SEC Form D

Connections

33

co-filers

Capital

$144.7M

across filings

Active

Feb 2024

to Jul 2024

Most-connected co-filers (33)

Samuel Blaichman · Halifax, Z41 shared Antonio J. Gracias · CHICAGO, IL1 shared Robert Kocher · Bethesda, MD1 shared Robert Demichiei · Cranberry, PA1 shared Melissa F. Miller · Lehi, UT1 shared Priscilla A. Hung · Lehi, UT1 shared Paul G. Moskowitz · Lehi, UT1 shared Michael E. Roman · Lehi, UT1 shared Ethan E. Waxman · Lehi, UT1 shared Eric L. Sinclair Iii · Lehi, UT1 shared Heidi G. Miller · Lehi, UT1 shared John L. Driscoll · Lehi, UT1 shared Gregory R. Packer · Lehi, UT1 shared Matthew J. Hawkins · Lehi, UT1 shared Christopher L. Schremser · Lehi, UT1 shared Steven M. Oreskovich · Lehi, UT1 shared Lauren E. Young · Lehi, UT1 shared Aashima E. Gupta · Lehi, UT1 shared Kim L. Wittman · Lehi, UT1 shared T. Craig J. Bridge · Lehi, UT1 shared Rahul M. Rajkumar · New York, NY1 shared Yaron Savoray · New York, NY1 shared Chen Yehudai · New York, NY1 shared Ran Shaul · New York, NY1 shared

Recent filings (3)

Waystar Holding Corp.Oct 2025 · 39 co-filers$620.8M Waystar Holding Corp.Oct 2025 · 39 co-filers$620.8M K Health, Inc.Jul 2024 · 21 co-filers$134.2M K Health, Inc.Jul 2024 · 21 co-filers$134.2M Accompany Health, Inc.Feb 2024 · 9 co-filers$56.3M Accompany Health, Inc.Feb 2024 · 9 co-filers$56.3M

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