Investor · Durham, NC

Dennis Langer

Open Dennis in the network graph →

Filings

25

SEC Form D

Connections

39

co-filers

Capital

$15.1M

across filings

Active

Sep 2021

to Jan 2026

Most-connected co-filers (39)

Grant S. Jackson · Grand Cayman, Cayman Islands14 shared Paul J. Mountain · Phoenix, AZ14 shared Nathan Poole · Maitland, FL10 shared Gary C. Linford · Grand Cayman, Cayman Islands10 shared Nick Bond · Maitland, FL10 shared Jason Brown · Grand Cayman, Cayman Islands10 shared Natasha C. Salins · South San Francisco, CA10 shared Derek Zaleski · Philadelphia, PA10 shared Tim Woodward · Oakland, CA6 shared Neil Cohen · Greenwood Village, CO6 shared Kenneth A. Hood · San Diego, CA6 shared Pieter Burger · Durham, NC6 shared Christopher Meldrum · Durham, NC6 shared Thomas Kaiser · Durham, NC6 shared Jonathan A. Bronson · Hingham, MA6 shared Greg Lyons · Dallas, TX6 shared John Hamer · Durham, NC6 shared Joshua Gruenstein · Watertown, MA6 shared Fred H. Jeffery · Safety Harbor, FL6 shared Lorraine J. Hall · Matthews, NC6 shared Andrew Durgee · Salisbury, CT6 shared Michael A. Harstrick · Boston, MA6 shared Paul Kasper · San Francisco, CA5 shared Chepstow Lane Capital LLP · London, United Kingdom5 shared

Recent filings (25)

Chepstow Credit Opportunities Master FundJan 2026 · 3 co-filers Avicenna Biosciences, Inc.Oct 2025 · 14 co-filers$71K ARKKAN OPPORTUNITIES FEEDER FUND I LTD.Aug 2025 · 8 co-filers ARKKAN OPPORTUNITIES FEEDER FUND II LTD.Aug 2025 · 8 co-filers Chepstow Credit Opportunities Master FundJan 2025 · 11 co-filers ARKKAN OPPORTUNITIES FEEDER FUND II LTD.Aug 2024 · 8 co-filers ARKKAN OPPORTUNITIES FEEDER FUND I LTD.Aug 2024 · 8 co-filers Avicenna Biosciences, Inc.Jul 2024 · 14 co-filers$6.0M Avicenna Biosciences, Inc.Feb 2024 · 14 co-filers$10.0M Chepstow Credit Opportunities Master FundJan 2024 · 11 co-filers Chepstow Credit Opportunities Master FundOct 2023 · 11 co-filers ARKKAN OPPORTUNITIES FEEDER FUND II LTD.Aug 2023 · 8 co-filers ARKKAN OPPORTUNITIES FEEDER FUND I LTD.Aug 2023 · 8 co-filers Mombak Holdings Ltd.Jun 2023 · 8 co-filers$2.2M Avicenna Biosciences, Inc.Mar 2023 · 14 co-filers$41K Avicenna Biosciences, Inc.Dec 2022 · 14 co-filers$6.0M Mombak Holdings Ltd.Nov 2022 · 8 co-filers$18.9M Avicenna Biosciences, Inc.Oct 2022 · 14 co-filers$18K Chepstow Credit Opportunities Master FundOct 2022 · 11 co-filers ARKKAN OPPORTUNITIES FEEDER FUND I LTD.Sep 2022 · 8 co-filers ARKKAN OPPORTUNITIES FEEDER FUND II LTD.Sep 2022 · 8 co-filers Mombak Holdings Ltd.Oct 2021 · 8 co-filers$8.4M ARKKAN OPPORTUNITIES FEEDER FUND I LTD.Sep 2021 · 8 co-filers ARKKAN OPPORTUNITIES FEEDER FUND II LTD.Sep 2021 · 8 co-filers Mombak Holdings Ltd.Sep 2021 · 8 co-filers$8.0M

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