Investor · New York, NY

Don Seymour

Open Don in the network graph →

Filings

59

SEC Form D

Connections

101

co-filers

Capital

—

across filings

Active

Aug 2009

to Jan 2026

Most-connected co-filers (101)

David A. Bree · Grand Cayman, Cayman Islands57 shared Neill Occhiogrosso · Palo Alto, CA52 shared Robert W. Bourne · Denver, CO52 shared Dustin Najar · Murfreesboro, TN50 shared Casey Ellis · San Francisco, CA50 shared Arthur L. Weinstein · Vista, CA46 shared Charles Beeler · San Mateo, CA46 shared Fortunato R. Rocca · Vista, CA42 shared John M. Radak · Vista, CA42 shared James R. Sperans · West Conshohocken, PA26 shared Martin A. Simonetti · Pasadena, CA26 shared Wei Wade M. Ren · Reno, NV26 shared Alan Walton · Provo, UT26 shared Kevin J. Sullivan · Denver, CO26 shared Mark R. Van Der Zwan · West Conshohocken, PA26 shared Matthew S. Richards · Madison, WI26 shared Steven R. Hash · Pasadena, CA24 shared Maria C. Freire, Ph.D · Pasadena, CA24 shared Richard H. Klein · Pasadena, CA24 shared Brian P. Birk · Santa Fe, NM24 shared Peter M. Moglia · Pasadena, CA24 shared Daniel J. Ryan · Pasadena, CA24 shared Joel S. Marcus · Pasadena, CA24 shared Dean A. Shigenaga · Pasadena, CA20 shared

Recent filings (59)

ALEXANDRIA REAL ESTATE EQUITIES, INC.Jan 2026 · 27 co-filers$4.7M ALEXANDRIA REAL ESTATE EQUITIES, INC.Jan 2026 · 27 co-filers$1.2M ALEXANDRIA REAL ESTATE EQUITIES, INC.Jan 2025 · 60 co-filers$1.3M ALEXANDRIA REAL ESTATE EQUITIES, INC.Jan 2025 · 60 co-filers$5.5M ALEXANDRIA REAL ESTATE EQUITIES, INC.Jan 2024 · 63 co-filers$1.3M ALEXANDRIA REAL ESTATE EQUITIES, INC.Jan 2024 · 63 co-filers$5.1M ALEXANDRIA REAL ESTATE EQUITIES, INC.Jan 2023 · 69 co-filers$980K ALEXANDRIA REAL ESTATE EQUITIES, INC.Jan 2023 · 69 co-filers$5.5M ALEXANDRIA REAL ESTATE EQUITIES, INC.Jan 2022 · 58 co-filers$745K ALEXANDRIA REAL ESTATE EQUITIES, INC.Jan 2022 · 58 co-filers$5.8M SkyBridge Opportunity Fund, Ltd.Apr 2021 · 5 co-filers ALEXANDRIA REAL ESTATE EQUITIES, INC.Jan 2021 · 62 co-filers$5.6M ALEXANDRIA REAL ESTATE EQUITIES, INC.Jan 2021 · 62 co-filers$711K SkyBridge Opportunity Fund, Ltd.Apr 2020 · 5 co-filers ALEXANDRIA REAL ESTATE EQUITIES, INC.Jan 2020 · 49 co-filers$666K ALEXANDRIA REAL ESTATE EQUITIES, INC.Jan 2020 · 49 co-filers$4.6M SkyBridge Opportunity Fund, Ltd.Apr 2019 · 5 co-filers ALEXANDRIA REAL ESTATE EQUITIES INCJan 2019 · 43 co-filers$4.3M ALEXANDRIA REAL ESTATE EQUITIES INCJan 2019 · 43 co-filers$576K SkyBridge Opportunity Fund, Ltd.Apr 2018 · 5 co-filers SkyBridge Opportunity Fund, Ltd.Apr 2017 · 5 co-filers ALEXANDRIA REAL ESTATE EQUITIES INCJan 2017 · 28 co-filers$110K ALEXANDRIA REAL ESTATE EQUITIES INCJan 2017 · 28 co-filers$3.6M SkyBridge Opportunity Fund, Ltd.Apr 2016 · 5 co-filers ALEXANDRIA REAL ESTATE EQUITIES INCJan 2016 · 29 co-filers

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