Investor · Seattle, WA

Sidney M. Warsinske

Open Sidney in the network graph →

Filings

23

SEC Form D

Connections

71

co-filers

Capital

$6.5M

across filings

Active

Jul 2019

to Mar 2025

Most-connected co-filers (71)

Jeffrey W. Bierman · St. Louis, MO7 shared Jiawei Wang · GARDENA, CA6 shared Laurel Beazer · Heath, TX6 shared Robert M. Romero · Palo Alto, CA5 shared Michelle Hatfield · Chattanooga, TN4 shared Koti Meka · GARDENA, CA4 shared Tedd A. Himler · New York, NY4 shared Stephen G. Brackett · Somerville, MA4 shared David-Jacques Farahi · Chattanooga, TN4 shared Douglas B. Ellis · Nassau, C54 shared Ahsan Aijaz · NEW YORK, NY4 shared Robert Jordshaugen · Chattanooga, TN4 shared Jeff G. Lloyd-Jones · Somerville, MA4 shared Richard J. Hine · Groton, CT4 shared Gal Krubiner · New York, NY4 shared Benjamin Glass · Somerville, MA4 shared Lewis A. Burleigh · NEW YORK, NY4 shared R. G. Salemme · Somerville, MA4 shared Mauricio Quintana · Somerville, MA4 shared Shaughn Simmons · Austin, TX4 shared Shigeki Miwa · Somerville, MA4 shared Karen C. Zyp · Nassau, C54 shared Daniel Umfleet · Chattanooga, TN4 shared Arunas Chesonis · BOSTON, MA4 shared

Recent filings (23)

Arise Normandy Park LLCJan 2026 · 1 co-filer$13.6M Arise Normandy Park LLCJan 2026 · 1 co-filer$19.1M Arise Baker Vista LLCOct 2025 · 7 co-filers$1.1M Arise Baker Vista LLCOct 2025 · 7 co-filers$1.1M Paratus AI, Inc.Jun 2025 · 2 co-filers$150K Paratus AI, Inc.Jun 2025 · 2 co-filers$2.8M Tye St Business Park LLCApr 2025 · 8 co-filers$575K Tye St Business Park LLCApr 2025 · 8 co-filers$575K Altaeros Energies, Inc.Apr 2025 · 23 co-filers$7.0M Glacier Park Apartments LLCMar 2025 · 8 co-filers$3.1M Altaeros Energies, Inc.Jan 2025 · 23 co-filers$5.0M STAQ Pharma, Inc.Sep 2024 · 24 co-filers$30.0M Altaeros Energies, Inc.Mar 2024 · 23 co-filers$14.0M Altaeros Energies, Inc.Jun 2023 · 23 co-filers$6.0M STAQ Pharma, Inc.Jun 2023 · 26 co-filers$20.0M STAQ Pharma, Inc.Apr 2023 · 26 co-filers$20.0M Kino, Inc.Mar 2022 · 8 co-filers$10.4M Kino, Inc.Dec 2021 · 8 co-filers$10.4M Arise Townhomes, LLCNov 2021 · 2 co-filers$1.4M Arise at Capitol Hill, LLCNov 2021 · 2 co-filers$1.2M Arise Denver, LLCNov 2021 · 2 co-filers$775K Kino, Inc.Dec 2020 · 8 co-filers$2.7M IDG Capital Project Fund II, L.P.Dec 2020 · 5 co-filers IDG Breyer Capital Fund L.P.Dec 2020 · 5 co-filers IDG Breyer Capital Fund L.P.Jul 2019 · 3 co-filers

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