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Michael G. Barrett

Insider · CEO · MGNI

Michael G. Barrett files insider transactions with the SEC as a ceo of Magnite (MGNI). We hold 5 disclosed purchases and sales filed since 30 July 2012, 5 of them in the last 90 days.

  • Files forMGNI
  • Disclosed buys and sells5 in all, 5 in the last 90 days
  • Last disclosure18 August 2026

Positions held

6 posts we hold — a term names its own dates; a run of filings only says when they filed
  • Filed 16 November 2020 — 15 August 2026CEO · Magnite (MGNI)100 Form 4 lines · source: SEC Form 4
  • Filed 18 September 2025 — 3 June 2026Director · OUTFRONT Media (OUT)2 Form 4 lines · source: SEC Form 4
  • Filed 17 March 2017 — 20 May 2020CEO · Rubicon Project (RUBI)24 Form 4 lines · source: SEC Form 4
  • Filed 25 January 2014 — 23 October 2015President and CEO · Millennial Media (MM)11 Form 4 lines · source: SEC Form 4
  • Filed 27 September 2013 — 27 September 2013Director · Tremor Video (TRMR)2 Form 4 lines · source: SEC Form 4
  • Filed 26 July 2012 — 26 July 2012EVP and Chief Revenue Officer · Yahoo (YHOO)2 Form 4 lines · source: SEC Form 4

Everything they disclosed

120 entries, newest first — one per disclosure report, one per Form 4 line

Positions come from the unitedstates/congress-legislators roster, the Office of Government Ethics and the SEC’s Form 4 index. Every disclosed line names its own source and links the document the government published; we print what the filing says and never a price we did not read from it. Headlines and links come from the GDELT Global Knowledge Graph — the story stays with the publisher. The portrait, where we have one, is the public-domain Congressional Bioguide photograph.