| Filed On | Filing |
|---|---|
| 20 Aug 2024 | SC 13G |
| 30 May 2024 | SC 13G |
| 13 May 2024 | SC 13G |
| 10 May 2024 | SC 13G |
| 11 Feb 2020 | 13G GRAHAM HOLDINGS CO. DECEMBER 2019 |
| 14 Feb 2019 | 13G GRAHAM HOLDINGS DECEMBER 2018 |
| 09 Feb 2018 | SCHEDULE 13G |
| 07 Apr 2017 | SC 13G |
| 10 Feb 2017 | SCHRODER INVESTMENT MANAGEMENT NORTH AMERICA INC SC 13G 12-31-2016 (GRAHAM HOLDI |
| 16 Feb 2016 | SC 13G |
| 01 Feb 2016 | SC 13G |
| 13 Feb 2015 | SCHRODER INVESTMENT MANAGEMENT NORTH AMERICA INC SC 13G 12-31-2014 (GRAHAM HOLDI |
| 10 Feb 2015 | SC 13G |
| 03 Feb 2015 | SC 13G |
| 14 Feb 2011 | SC 13G |
| 11 Feb 2011 | WASHINGTON POST CO. |
| 06 Feb 2009 | THE WASHINGTON POST COMPANY 13G |
| 14 Feb 2007 | SC 13G |
| 17 May 2005 | SCHEDULE 13G |
| 24 Jan 2001 | SC 13G |
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