Investor · El Segundo, CA

Steve Tumbarello

Open Steve in the network graph →

Filings

12

SEC Form D

Connections

150

co-filers

Capital

$39.0M

across filings

Active

Oct 2019

to Nov 2025

Most-connected co-filers (150)

Anthony Gabriel · El Segundo, CA12 shared Mohamad H. Makhzoumi · Menlo Park, CA11 shared Richard Whitney · Long Beach, CA7 shared Joseph Mello · El Segundo, CA7 shared William Brody · El Segundo, CA7 shared Kavita Patel · El Segundo, CA5 shared Robert Sheehy · El Segundo, CA5 shared Rod Owen · El Segundo, CA5 shared Joel Allison · El Segundo, CA4 shared Brian C. Lentz · Minneapolis, MN4 shared Geoffrey Clark · El Segundo, CA4 shared William D. Fisher, Jr · Minneapolis, MN4 shared Gregory Connor · El Segundo, CA4 shared Jeffrey Immelt · El Segundo, CA4 shared Robert S. Bergmann · Minneapolis, MN4 shared Sanjay Jeyakumar · San Francisco, CA3 shared Werner J. Roeder · Rye, NY3 shared Cameron Cleeton · El Segundo, CA3 shared Salvatore J. Zizza · Rye, NY3 shared Thomas H. Dinsmore · Rye, NY3 shared Evan Reiser · San Francisco, CA3 shared Basak Ertan · El Segundo, CA3 shared Adam Landau · West Conshohocken, PA3 shared Anthony S. Colavita · Rye, NY3 shared

Recent filings (12)

GABELLI CONVERTIBLE & INCOME SECURITIES FUND INCNov 2025 · 33 co-filers$20.0M GABELLI CONVERTIBLE & INCOME SECURITIES FUND INCJan 2023 · 31 co-filers$15.0M Radiology Partners Holdings, LLCJun 2022 · 41 co-filers Radiology Partners Holdings, LLCMar 2021 · 50 co-filers$12.6M Radiology Partners Holdings, LLCMar 2021 · 50 co-filers$26.4M GABELLI CONVERTIBLE & INCOME SECURITIES FUND INCOct 2019 · 35 co-filers$35.0M Capula Global Relative Value Fund LPOct 2019 · 20 co-filers Capula Global Relative Value Fund LTDOct 2019 · 20 co-filers Radiology Partners Holdings, LLCMay 2019 · 55 co-filers$47.7M Radiology Partners Holdings, LLCFeb 2018 · 17 co-filers$250.0M Radiology Partners Holdings, LLCFeb 2018 · 17 co-filers$250.0M Radiology Partners Holdings, LLCMay 2017 · 13 co-filers$200.0M Radiology Partners Holdings, LLCMay 2017 · 13 co-filers$200.0M Radiology Partners Holdings, LLCJan 2017 · 16 co-filers$1.8M Radiology Partners Holdings, LLCJan 2017 · 16 co-filers$1.8M

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