Investor · New York, NY

Mason A. Sleeper

Open Mason in the network graph →

Filings

27

SEC Form D

Connections

142

co-filers

Capital

$625K

across filings

Active

Sep 2017

to Jan 2024

Most-connected co-filers (142)

Kelsey A. Durels · New York, NY18 shared Christopher A. Hughes · New York, NY17 shared Ronald W. Strobl · New York, NY14 shared Peter A. Calatozzo · New York, NY13 shared Russell L. Appel · New York, NY13 shared Lindsay A. Schuckman · New York, NY12 shared Adam Mcgovern · New York, NY11 shared Joshua A. Kogel · New York, NY7 shared Fiona L. Le Poidevin · St Peter Port, Y75 shared Jessica S. Thompson · Richmond, VA5 shared Barrett Worthington · Charlottesville, VA5 shared Seth C. Silverman · New York, NY5 shared Kurt Ursich · Issaquah, WA5 shared Roy J. Patterson · Lincoln, NE5 shared Doug Pepper · San Francisco, CA5 shared Timmo H. Mol · LUXEMBOURG CITY, Luxembourg5 shared Creighton J. Bassett · Lincoln, NE5 shared Ben Hill · ST. PETER PORT, Y75 shared Matthew W. Wood · St Peter Port, Y75 shared Edward Morrell · Irvine, CA5 shared Carlisle Management Company S.C.A · LUXEMBOURG CITY, Luxembourg5 shared Dirk J. Emmens · SAN FRANCISCO, CA5 shared Abraham M. Pak · Garden Grove, CA4 shared Faiez I. Ennabe · Garden Grove, CA4 shared

Recent filings (27)

US Metro Bancorp, Inc.Nov 2025 · 38 co-filers$31.9M US Metro Bancorp, Inc.May 2025 · 38 co-filers$15.9M Versol Drive Member LLCJan 2024 · 24 co-filers$125K TPF X JV Holdco I LLCJan 2022 · 26 co-filers$125K TPF X JV Holdco II LLCJan 2022 · 26 co-filers$125K TPF IX JV Holdco II LLCDec 2021 · 26 co-filers$125K Tertill CorpMay 2021 · 11 co-filers$4.5M Praedium X Middle-Income Housing Fund, L.P.Apr 2021 · 23 co-filers TPF X REITFeb 2021 · 23 co-filers$125K TPF IX JV Holdco LLCJan 2021 · 23 co-filers$125K North Valley Pkwy Member LLCJan 2021 · 23 co-filers$125K US Metro Bancorp, Inc.Nov 2020 · 29 co-filers$16.0M US Metro Bancorp, Inc.Jul 2020 · 35 co-filers$10.0M ASPRO EXCHANGE PTY LTDJul 2020 · 2 co-filers$1.0B ASPRO EXCHANGE PTY LTDJul 2020 · 2 co-filers$1.0B Ashley Park Blvd Member LLCJan 2020 · 23 co-filers$125K Praedium X Middle-Income Housing Fund, L.P.Oct 2019 · 23 co-filers PD Elliott Holdings, LLCOct 2018 · 5 co-filers$2.7M 6300 Westpark Partner, LLCOct 2018 · 5 co-filers$4.6M Xage Security, Inc.Oct 2018 · 17 co-filers$21.1M Xage Security, Inc.Aug 2018 · 11 co-filers$15.7M UNICO Kingfisher #5, LPJul 2018 · 3 co-filers$550K Franklin Robotics, Inc.Apr 2018 · 5 co-filers$1.0M UNICO Kingfisher #4, LPApr 2018 · 5 co-filers$400K TPF IX REITJan 2018 · 15 co-filers$125K

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