GHC · Laura O'Shaughnessy filed an amendment to her Schedule 13D for Graham…

Laura O'Shaughnessy filed an amendment to her Schedule 13D for Graham Holdings, updating her beneficial ownership to 12.0% of Class B common stock (434,689 shares) as of November 2, 2026. The filing reflects a change in outstanding shares reported in the company's recent 10-Q and certain earlier transactions by the reporting person, but does not indicate any new demands or changes in purpose.

• Laura O'Shaughnessy beneficially owns 434,689 shares of Class B Common Stock, representing 12.0% of shares outstanding.
• Ownership includes 191,705 Class A shares held in trusts for siblings (shared voting via proxy), 200,197 Class A shares held in trusts for her father (sole voting via proxy), 19,922 Class A shares held jointly with spouse, and 22,865 Class B shares held jointly with spouse.
• The filing updates the percentage due to a change in outstanding shares reported in the company's October 29, 2026 10-Q and certain earlier transactions by the reporting person.
• No new demands, intentions, or changes in purpose were stated in this amendment.