Private company

Stagwell Agency Holdings LLC

American company, incorporated in Delaware. Summary from the record

Last updated Oct 21, 2026.

Overview

HeadquartersDE¹

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Corporate structure

Stagwell Agency Holdings LLC sits at the top of its group. 2 entities, 2 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

Stagwell Agency Holdings LLC DE
- MDC Partners Stake · Toronto, Ontario, Canada

Built from major holders from Schedules 13D and 13G; stakes of 5% or more it reported on Schedules 13D and 13G (1 companies). Each entity in the chart links to its source.

Filings

12 filings to the SEC since October 2021: 12 other. The latest 12:

Every filing from the last five years, summarized. The full record is on SEC EDGAR.

Stakes it holds

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

MDC PartnersSC 13D/A Oct 7, 2021 to May 19, 2023²

Sources

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

1
SEC EDGARStagwell Agency Holdings LLC filings on SEC EDGAR
2
SEC EDGARStagwell Agency Holdings LLC SC 13D/A on MDC Partners