SIC: 8200 - SERVICES-EDUCATIONAL SERVICES
State location: VA | State of Inc.: DE | Fiscal Year End: 1231
formerly: WASHINGTON POST CO (filings through 2013-11-18)
(CF Office: 07 Trade & Services)
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| Filings | Format | Description | Filing Date | File/Film Number |
|---|---|---|---|---|
| 13F-HR | Documents | Quarterly report filed by institutional managers, Holdings Acc-no: 0000104889-25-000041 (34 Act) Size: 5 KB |
2025-05-15 | 028-22110 25953799 |
| SCHEDULE 13G/A | Documents | [Amend] Statement of Beneficial Ownership by Certain Investors Acc-no: 0000104889-25-000038 Size: 7 KB |
2025-05-14 | |
| 8-K | Documents Interactive Data | Current report, item 5.07
Acc-no: 0000104889-25-000035 (34 Act) Size: 169 KB |
2025-05-07 | 001-06714 25920248 |
| 8-K | Documents Interactive Data | Current report, items 2.02 and 9.01
Acc-no: 0000104889-25-000033 (34 Act) Size: 529 KB |
2025-04-30 | 001-06714 25891176 |
| 10-Q | Documents Interactive Data | Quarterly report [Sections 13 or 15(d)] Acc-no: 0000104889-25-000032 (34 Act) Size: 11 MB |
2025-04-30 | 001-06714 25891150 |
| SCHEDULE 13G/A | Documents | [Amend] Statement of Beneficial Ownership by Certain Investors Acc-no: 0002052113-25-001898 (34 Act) Size: 11 KB |
2025-04-29 | 005-64497 25886489 |
| 4 | Documents | Statement of changes in beneficial ownership of securities Acc-no: 0000104889-25-000028 Size: 4 KB |
2025-04-03 | |
| 4 | Documents | Statement of changes in beneficial ownership of securities Acc-no: 0000104889-25-000027 Size: 4 KB |
2025-04-03 | |
| 4 | Documents | Statement of changes in beneficial ownership of securities Acc-no: 0000104889-25-000026 Size: 4 KB |
2025-04-03 | |
| 4 | Documents | Statement of changes in beneficial ownership of securities Acc-no: 0000104889-25-000025 Size: 4 KB |
2025-04-03 | |
| 4 | Documents | Statement of changes in beneficial ownership of securities Acc-no: 0000104889-25-000024 Size: 4 KB |
2025-04-03 | |
| ARS | Documents | Annual Report to Security Holders Acc-no: 0001193125-25-063228 (34 Act) Size: 52 MB |
2025-03-26 | 001-06714 25770245 |
| DEFA14A | Documents | Additional definitive proxy soliciting materials and Rule 14(a)(12) material Acc-no: 0001193125-25-063222 (34 Act) Size: 459 KB |
2025-03-26 | 001-06714 25770239 |
| DEF 14A | Documents Interactive Data | Other definitive proxy statements Acc-no: 0001193125-25-063218 (34 Act) Size: 7 MB |
2025-03-26 | 001-06714 25770234 |
| SCHEDULE 13D/A | Documents | [Amend] General Statement of Acquisition of Beneficial Ownership Acc-no: 0000950157-25-000189 (34 Act) Size: 18 KB |
2025-02-28 | 005-64497 25682915 |
| 8-K | Documents Interactive Data | Current report, items 2.02 and 9.01
Acc-no: 0000104889-25-000023 (34 Act) Size: 806 KB |
2025-02-26 | 001-06714 25666294 |
| 10-K | Documents Interactive Data | Annual report [Section 13 and 15(d), not S-K Item 405] Acc-no: 0000104889-25-000022 (34 Act) Size: 23 MB |
2025-02-26 | 001-06714 25666259 |
| 8-K | Documents Interactive Data | Current report, items 5.02 and 9.01
Acc-no: 0000104889-25-000019 (34 Act) Size: 166 KB |
2025-02-25 | 001-06714 25664372 |
| 13F-HR | Documents | Quarterly report filed by institutional managers, Holdings Acc-no: 0000104889-25-000016 (34 Act) Size: 5 KB |
2025-02-14 | 028-22110 25629432 |
| 4 | Documents | Statement of changes in beneficial ownership of securities Acc-no: 0000104889-25-000012 Size: 8 KB |
2025-01-29 | |
| 144 | Documents | Report of proposed sale of securities Acc-no: 0001971857-25-000059 (33 Act) Size: 4 KB |
2025-01-06 | 001-06714 25511742 |
| 4 | Documents | Statement of changes in beneficial ownership of securities Acc-no: 0000104889-25-000010 Size: 6 KB |
2025-01-06 | |
| 4 | Documents | Statement of changes in beneficial ownership of securities Acc-no: 0000104889-25-000009 Size: 6 KB |
2025-01-06 | |
| 4 | Documents | Statement of changes in beneficial ownership of securities Acc-no: 0000104889-25-000008 Size: 4 KB |
2025-01-06 | |
| 4 | Documents | Statement of changes in beneficial ownership of securities Acc-no: 0000104889-25-000007 Size: 5 KB |
2025-01-06 | |
| 4 | Documents | Statement of changes in beneficial ownership of securities Acc-no: 0000104889-25-000006 Size: 6 KB |
2025-01-06 | |
| 4 | Documents | Statement of changes in beneficial ownership of securities Acc-no: 0000104889-25-000005 Size: 8 KB |
2025-01-06 | |
| 4 | Documents | Statement of changes in beneficial ownership of securities Acc-no: 0000104889-25-000004 Size: 4 KB |
2025-01-06 | |
| 4 | Documents | Statement of changes in beneficial ownership of securities Acc-no: 0000104889-25-000003 Size: 4 KB |
2025-01-06 | |
| 4 | Documents | Statement of changes in beneficial ownership of securities Acc-no: 0000104889-25-000002 Size: 4 KB |
2025-01-06 | |
| 4 | Documents | Statement of changes in beneficial ownership of securities Acc-no: 0000104889-25-000001 Size: 4 KB |
2025-01-06 | |
| 4 | Documents | Statement of changes in beneficial ownership of securities Acc-no: 0000104889-24-000075 Size: 4 KB |
2024-11-14 | |
| 13F-HR | Documents | Quarterly report filed by institutional managers, Holdings Acc-no: 0000104889-24-000073 (34 Act) Size: 5 KB |
2024-11-14 | 028-22110 241463185 |
| 4 | Documents | Statement of changes in beneficial ownership of securities Acc-no: 0000104889-24-000067 Size: 6 KB |
2024-11-08 | |
| UPLOAD | Documents | [Cover]SEC-generated letter Acc-no: 0000000000-24-012379 Size: 39 KB |
2024-11-07 | 001-06714 |
| 4 | Documents | Statement of changes in beneficial ownership of securities Acc-no: 0000950157-24-001477 Size: 12 KB |
2024-11-05 | |
| 4 | Documents | Statement of changes in beneficial ownership of securities Acc-no: 0000950157-24-001476 Size: 11 KB |
2024-11-05 | |
| 8-K | Documents Interactive Data | Current report, items 2.02 and 9.01
Acc-no: 0000104889-24-000066 (34 Act) Size: 767 KB |
2024-10-30 | 001-06714 241407546 |
| 10-Q | Documents Interactive Data | Quarterly report [Sections 13 or 15(d)] Acc-no: 0000104889-24-000065 (34 Act) Size: 13 MB |
2024-10-30 | 001-06714 241407533 |
| 4 | Documents | Statement of changes in beneficial ownership of securities Acc-no: 0000950157-24-001422 Size: 12 KB |
2024-10-17 |