Investor · Vancouver, British Columbia, Canada

Sandra E. Mackay

Open Sandra in the network graph →

Filings

76

SEC Form D

Connections

303

co-filers

Capital

$2.0M

across filings

Active

Aug 2017

to Oct 2025

Most-connected co-filers (303)

Blake Steele · White Rock, British Columbia, Canada48 shared Glenn Catchpole · Edgemont, SD44 shared John Mays · Edgemont, SD40 shared Matthew O'Kane · White Rock, British Columbia, Canada40 shared Todd E. Hilditch · Vancouver, British Columbia, Canada36 shared Michael Demartino · Los Angeles, CA25 shared Ronald P. Overstreet · SPOKANE, WA25 shared Harry I. Rubash · WELLESLEY, MA25 shared Pierre Lapalme · Verdun, Quebec, Canada21 shared Dan O'Brien · White Rock, British Columbia, Canada21 shared Sylvain Chretien · Verdun, Quebec, Canada19 shared Joseph Havlin · Edgemont, SD19 shared Richard Blubaugh · Edgemont, SD19 shared Linda H. Lewis · Stamford, CT17 shared Scott J. Lawlor · Stamford, CT17 shared Darcy E. Higgs · Vancouver, British Columbia, Canada17 shared Peter H. Dicorpo · Stamford, CT17 shared Trevor Baldwin · TAMPA, FL15 shared Robert L. Suttie · Toronto, Ontario, Canada15 shared Delos Cy Jamison · Greenwood Village, CO15 shared Waypoint Residential, LLC · Stamford, CT14 shared Eric H. Hade · Stamford, CT14 shared Christina Blacker · Vancouver, British Columbia, Canada13 shared Thibault M. Gournay · New York, NY13 shared

Recent filings (76)

URZ3 ENERGY CORP.Mar 2026 · 5 co-filers$159K Iambic Therapeutics, Inc.Nov 2025 · 31 co-filers$125.0M URZ3 ENERGY CORP.Oct 2025 · 10 co-filers$289K URZ3 ENERGY CORP.Oct 2025 · 10 co-filers$352K URZ3 ENERGY CORP.Oct 2025 · 10 co-filers$352K URZ3 ENERGY CORP.Oct 2025 · 10 co-filers$289K URZ3 ENERGY CORP.Jun 2025 · 10 co-filers$757K URZ3 ENERGY CORP.Jun 2025 · 10 co-filers$757K URZ3 ENERGY CORP.Mar 2025 · 16 co-filers$159K URZ3 ENERGY CORP.Mar 2025 · 16 co-filers$159K URZ3 ENERGY CORP.Nov 2024 · 8 co-filers$289K URZ3 ENERGY CORP.Nov 2024 · 8 co-filers$289K URZ3 ENERGY CORP.Aug 2024 · 8 co-filers$567K URZ3 ENERGY CORP.Aug 2024 · 8 co-filers$567K Iambic Therapeutics, Inc.Jun 2024 · 26 co-filers$50.0M Cetera Advisor Networks LLC /CAMay 2024 · 45 co-filers Iambic Therapeutics, Inc.May 2024 · 26 co-filers$38.0M Iambic Therapeutics, Inc.Apr 2024 · 26 co-filers$38.0M NEVADA EXPLORATION INCMar 2024 · 16 co-filers$159K NEVADA EXPLORATION INCMar 2024 · 16 co-filers$159K Iambic Therapeutics, Inc.Oct 2023 · 25 co-filers$110.0M Cetera Advisor Networks LLC /CAApr 2023 · 43 co-filers Cetera Advisor Networks LLC /CAApr 2023 · 44 co-filers Cetera Advisor Networks LLC /CAApr 2022 · 52 co-filers rePlant Soil Fund, PBLLCApr 2022 · 14 co-filers

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