Investor · Acton, MA

Thomas Baumlin

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Filings

14

SEC Form D

Connections

31

co-filers

Capital

—

across filings

Active

Mar 2009

to Feb 2026

Most-connected co-filers (31)

Geoff C. Ruddick · Grand Cayman, Cayman Islands6 shared Sean Mcnamara · St. Charles, IL6 shared Capstone Investment Advisors, Llc · New York, NY6 shared Kevin R. Hill · Rumson, NJ5 shared Rob Kolodziej · New York, NY4 shared Basil Bourque · Acton, MA4 shared Eddie A. Sawyer · Sonora, TX4 shared Capstone Investment Advisors, Llc · New York, NY4 shared Boris M. Onefater · New York, NY4 shared Sean F. Mcnamara · New York, NY3 shared Barry West · Lexington, MA2 shared David Briones · New York, NY2 shared Robert Shedd · Philadelphia, PA2 shared Scott Olle · Menlo Park, CA2 shared Osmo Hautanen · New York, NY2 shared Brad Sellers · Richmond, VA2 shared Bradford S. Sterl, Jr · Pittsfield, NH2 shared Michael E. Fayed · Belmont, NC2 shared David W. Mcmahan · Belmont, NC2 shared Edward Dieguez · Belmont, NC2 shared Dana W. Ryan · Franklin, TN2 shared Benjamin G. Wolff · Kirkland, WA2 shared Russell J. Cyr · Lowell, MA2 shared Geoffrey C. Dawe · Lowell, MA2 shared

Recent filings (14)

Capstone Blue Fund Ltd.Feb 2026 · 3 co-filers Capstone Global (Offshore) Ltd.Jan 2026 · 3 co-filers Capstone Income Opportunities Feeder Fund Ltd.Nov 2025 · 10 co-filers Capstone Phi Kappa Fund Ltd.Nov 2025 · 10 co-filers Capstone Equity Replacement Fund (Cayman) Ltd.Nov 2025 · 10 co-filers Capstone Dispersion Fund (Cayman) Ltd.Oct 2025 · 10 co-filers FTS HOLDINGS, INC.Jun 2012 · 6 co-filers$150.0M Two Rivers Healthcare Capital XI, LPMay 2010 · 3 co-filers$10.0M Capital Guardian Holding, LLCMar 2010 · 6 co-filers$250K Roundstone Healthcare Capital X, LPNov 2009 · 7 co-filers$30.0M Roundstone Healthcare Capital VIII, LPSep 2009 · 7 co-filers$30.0M Capital Guardian Holding, LLCSep 2009 · 6 co-filers$5.0M Roundstone Healthcare Capital V, LPMay 2009 · 7 co-filers$25.0M Roundstone Healthcare Capital V, LPMar 2009 · 7 co-filers$25.0M

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