Sign in

Private company

Mount Grey Capital LLC

American company, incorporated in Delaware. Summary from the record

Last updated Oct 21, 2026.

Overview

  • HeadquartersDE1

See how the biggest companies compare on our leaderboards

Corporate structure

Mount Grey Capital LLC sits at the top of its group. 2 entities, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.

Major holders of Mount Grey Capital LLC

  • Paul David Magidson Owns 25% to 50% of Mount Grey Capital LLC, since 02/2022 (Form ADV)
  • Robert James Haderer Owns 25% to 50% of Mount Grey Capital LLC, since 02/2022 (Form ADV)
  • Ostrom Enders Owns 10% to 25% of Mount Grey Capital LLC, since 01/2024 (Form ADV)

Built from major holders from Schedules 13D and 13G; stakes of 5% or more it reported on Schedules 13D and 13G (1 companies); owners and owned firms from Form ADV, the registration investment advisers file with the SEC. Each entity in the chart links to its source.

Investment adviser

Mount Grey Capital LLC is registered with the SEC as an investment adviser. This is what it reports on Form ADV, the registration every adviser files and keeps current.

Who owns it

Owners of 5% or more as the firm lists them (Schedule A), and the owners of those owners up the chain (Schedule B).

  • Robert James Hadererowns 25% to 50%, since 02/2022
  • Paul David Magidsonowns 25% to 50%, since 02/2022
  • Ostrom Endersowns 10% to 25%, since 01/2024

Stakes it holds

Mount Grey Capital LLC has told the SEC it owns more than 5% of 1 company, latest first (Schedules 13D and 13G).

Sources

The numbers on this page point here. Each one links to the record it came from.

  1. 1
  2. 2
  3. 3