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 |
|---|---|---|---|---|
| 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 |
| 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 |
| UPLOAD | Documents | [Cover]SEC-generated letter Acc-no: 0000000000-24-012379 Size: 39 KB |
2024-11-07 | 001-06714 |
| 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 |
| 11-K | Documents | Annual report of employee stock purchase, savings and similar plans Acc-no: 0000104889-24-000062 (34 Act) Size: 143 KB |
2024-10-04 | 001-06714 241354133 |
| 11-K | Documents | Annual report of employee stock purchase, savings and similar plans Acc-no: 0000104889-24-000061 (34 Act) Size: 138 KB |
2024-10-04 | 001-06714 241354131 |
| 11-K | Documents | Annual report of employee stock purchase, savings and similar plans Acc-no: 0000104889-24-000060 (34 Act) Size: 144 KB |
2024-10-04 | 001-06714 241354118 |
| CORRESP | Documents | [Cover]Correspondence Acc-no: 0000104889-24-000049 Size: 11 KB |
2024-09-23 | |
| UPLOAD | Documents | [Cover]SEC-generated letter Acc-no: 0000000000-24-010661 Size: 42 KB |
2024-09-19 | 001-06714 |
| 8-K | Documents Interactive Data | Current report, items 5.03 and 9.01
Acc-no: 0000104889-24-000047 (34 Act) Size: 299 KB |
2024-09-13 | 001-06714 241298363 |
| SC 13D/A | Documents | [Amend] General Statement of Acquisition of Beneficial Ownership Acc-no: 0000950157-24-001187 (34 Act) Size: 50 KB |
2024-09-05 | 005-64497 241281924 |
| SC 13D | Documents | General Statement of Acquisition of Beneficial Ownership Acc-no: 0000950157-24-001186 (34 Act) Size: 50 KB |
2024-09-05 | 005-64497 241281903 |
| N-PX | Documents | Annual Report of proxy voting record of management investment companies Acc-no: 0000950157-24-001158 (34 Act) Size: 3 KB |
2024-09-03 | 028-22110 241273752 |
| SC 13G | Documents | Statement of Beneficial Ownership by Certain Investors Acc-no: 0000950157-24-001113 Size: 49 KB |
2024-08-20 | |
| 13F-HR | Documents | Quarterly report filed by institutional managers, Holdings Acc-no: 0000104889-24-000043 (34 Act) Size: 5 KB |
2024-08-14 | 028-22110 241208028 |
| 8-K | Documents Interactive Data | Current report, items 2.02 and 9.01
Acc-no: 0000104889-24-000042 (34 Act) Size: 768 KB |
2024-07-31 | 001-06714 241159995 |
| 10-Q | Documents Interactive Data | Quarterly report [Sections 13 or 15(d)] Acc-no: 0000104889-24-000041 (34 Act) Size: 13 MB |
2024-07-31 | 001-06714 241159983 |
| NT 11-K | Documents | Notification of inability to timely file Form 11-K Acc-no: 0000104889-24-000031 (34 Act) Size: 38 KB |
2024-06-28 | 001-06714 241084198 |
| NT 11-K | Documents | Notification of inability to timely file Form 11-K Acc-no: 0000104889-24-000029 (34 Act) Size: 38 KB |
2024-06-28 | 001-06714 241084102 |
| NT 11-K | Documents | Notification of inability to timely file Form 11-K Acc-no: 0000104889-24-000027 (34 Act) Size: 38 KB |
2024-06-28 | 001-06714 241084087 |
| SD | Documents | Specialized disclosure report Acc-no: 0000104889-24-000025 (34 Act) Size: 49 KB |
2024-05-31 | 001-06714 241007974 |
| SC 13G | Documents | Statement of Beneficial Ownership by Certain Investors Acc-no: 0001013594-24-000518 (34 Act) Size: 130 KB |
2024-05-30 | 005-64497 241007048 |
| 13F-HR | Documents | Quarterly report filed by institutional managers, Holdings Acc-no: 0000104889-24-000023 (34 Act) Size: 5 KB |
2024-05-16 | 028-22110 24953806 |
| SC 13G | Documents | Statement of Beneficial Ownership by Certain Investors Acc-no: 0000950157-24-000740 (34 Act) Size: 50 KB |
2024-05-13 | 005-64497 24939420 |
| SC 13G | Documents | Statement of Beneficial Ownership by Certain Investors Acc-no: 0000950157-24-000737 (34 Act) Size: 60 KB |
2024-05-10 | 005-64497 24935698 |
| SC 13D | Documents | General Statement of Acquisition of Beneficial Ownership Acc-no: 0000950157-24-000736 (34 Act) Size: 45 KB |
2024-05-10 | 005-64497 24935662 |
| 8-K | Documents Interactive Data | Current report, item 5.07
Acc-no: 0000104889-24-000021 (34 Act) Size: 171 KB |
2024-05-08 | 001-06714 24924820 |
| 8-K | Documents Interactive Data | Current report, items 2.02 and 9.01
Acc-no: 0000104889-24-000018 (34 Act) Size: 541 KB |
2024-05-01 | 001-06714 24900221 |
| 10-Q | Documents Interactive Data | Quarterly report [Sections 13 or 15(d)] Acc-no: 0000104889-24-000016 (34 Act) Size: 11 MB |
2024-05-01 | 001-06714 24900200 |
| ARS | Documents | Annual Report to Security Holders Acc-no: 0001193125-24-077210 (34 Act) Size: 5 MB |
2024-03-26 | 001-06714 24781199 |
| DEFA14A | Documents | Additional definitive proxy soliciting materials and Rule 14(a)(12) material Acc-no: 0001193125-24-077208 (34 Act) Size: 1 MB |
2024-03-26 | 001-06714 24781192 |
| DEF 14A | Documents Interactive Data | Other definitive proxy statements Acc-no: 0001193125-24-077204 (34 Act) Size: 6 MB |
2024-03-26 | 001-06714 24781185 |