Investor · Cambridge, MA

Arlene L. Morris

Open Arlene in the network graph →

Filings

19

SEC Form D

Connections

67

co-filers

Capital

$149.2M

across filings

Active

Apr 2019

to Oct 2025

Most-connected co-filers (67)

Jessica L. Sachs · Cambridge, MA19 shared William G. Neisel · Dallas, TX15 shared Christopher Fashek · Elmsford, NY15 shared Jody Rebak · Vancouver, British Columbia, Canada15 shared Yongquan Bi · BEIJING, Israel15 shared David S. Gassko · Dallas, TX15 shared Philip Riese · Seattle, WA15 shared Susanna Morgan · Seattle, WA15 shared Jay J. Desai · Dallas, TX15 shared Ron B. Shah · Seattle, WA15 shared Satish U. Patel · Dallas, TX15 shared Dietrich Shirley · Vancouver, British Columbia, Canada15 shared Charles B. Stonecipher · Bellevue, WA15 shared Andrew S. Rosen · Dallas, TX15 shared Jijun Hu · BEIJING, Israel15 shared Daniel J. Hopkin · Dallas, TX15 shared Jeffrey L. Moredock · Dallas, TX15 shared Kevin E. Elliott · Dallas, TX15 shared Eric E. Lloyd · Charlotte, NC15 shared Matthew B. Oppenheimer · Seattle, WA15 shared David W. Knickel · Dallas, TX14 shared Joshua B. Hug · Seattle, WA14 shared Mary Beth Laughton · Redwood City, CA14 shared Mohammad R. Zafar · Dallas, TX14 shared

Recent filings (19)

Muenster Milling Holdings LPOct 2025 · 22 co-filers KM Blocker Corp.Jan 2025 · 29 co-filers Kainos NS Holdings LPJan 2025 · 29 co-filers Whisps Holdings LPJan 2024 · 35 co-filers KM Blocker Corp.Jan 2024 · 35 co-filers Whisps Holdings LPMar 2023 · 35 co-filers KM Blocker Corp.Dec 2022 · 35 co-filers Kainos NS Holdings LPMar 2022 · 29 co-filers Muenster Milling Holdings LPAug 2021 · 35 co-filers KM Blocker Corp.Aug 2021 · 35 co-filers Muenster Milling Holdings LPAug 2021 · 35 co-filers Kainos NS Holdings LPMay 2021 · 29 co-filers$178.0M Kainos NS Holdings LPMar 2021 · 29 co-filers Kainos NS Holdings LPDec 2020 · 29 co-filers Unum Therapeutics Inc.Jul 2020 · 23 co-filers$44.8M Unum Therapeutics Inc.Jul 2020 · 23 co-filers$104.4M Whisps Holdings LPMay 2019 · 29 co-filers BCo Venture Fund I, LPMay 2019 · 10 co-filers$10.0M BCo Venture Fund I, LPApr 2019 · 10 co-filers$10.0M

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