Incident & Disclosure Desk
Which companies have disclosed a security incident to investors, and what did they say?
This log records each disclosure from the filing itself: SEC Form 8-K Item 1.05 filings since the item took effect on December 18, 2023 (exclusions are listed on the method page), plus notable incident disclosures made under Items 7.01 and 8.01 before and after that date. Each entry links the filing, tracks follow-up filings, and notes who held the security seat only where the CISO Tribune record shows it.
- Incidents in the log
- 77
- Filed under Item 1.05
- 56
- Follow-up filings tracked
- 56
- Companies
- 77
Latest disclosures
All 77 incidents| 2026-09-23 | Astrana HealthASTH | Health care | 8-K Item 1.05 | — | — | 0 |
| 2026-09-01 | Park Dental PartnersPARK | Health care | 8-K Item 1.05 | 2026-08-28 | 4 | 0 |
| 2026-08-26 | Boston ScientificBSX | Life sciences & medical devices | 8-K Item 8.01; Item 1.05 | 2026-08-25 | 1 | 1 |
| 2026-08-24 | Nutex HealthNUTX | Health care | 8-K Item 8.01; Item 1.05 | — | — | 1 |
| 2026-07-31 | AmgenAMGN | Life sciences & medical devices | 8-K Item 1.05 | 2026-07 | — | 0 |
| 2026-07-02 | AdaptHealthAHCO | Health care | 8-K Item 1.05 | — | — | 0 |
| 2026-07-02 | NavientNAVI | Financial services | 8-K Item 1.05 | 2026-06-08 | 24 | 0 |
| 2026-06-25 | River FinancialRVRF | Financial services | 8-K Item 1.05 | 2026-06-19 | 6 | 4 |
| 2026-06-23 | 8x8EGHT | Technology | 8-K Item 1.05 | 2026-06-13 | 10 | 0 |
| 2026-06-15 | iRhythm HoldingsIRTC | Life sciences & medical devices | 8-K Item 1.05 | 2026-06-08 | 7 | 0 |
| 2026-05-11 | West Pharmaceutical ServicesWST | Life sciences & medical devices | 8-K Item 1.05 | 2026-05-04 | 7 | 1 |
| 2026-04-08 | Bitcoin DepotBTM | Financial services | 8-K Item 1.05 | 2026-03-23 | 16 | 0 |
- Astrana Health2026-09-238-K Item 1.05Health care
- Park Dental Partners2026-09-018-K Item 1.05Health care
- Boston Scientific2026-08-268-K Item 8.01; Item 1.05Life sciences & medical devices1 follow-up
- Nutex Health2026-08-248-K Item 8.01; Item 1.05Health care1 follow-up
- Amgen2026-07-318-K Item 1.05Life sciences & medical devices
- AdaptHealth2026-07-028-K Item 1.05Health care
- Navient2026-07-028-K Item 1.05Financial services
- River Financial2026-06-258-K Item 1.05Financial services4 follow-ups
- 8x82026-06-238-K Item 1.05Technology
- iRhythm Holdings2026-06-158-K Item 1.05Life sciences & medical devices
- West Pharmaceutical Services2026-05-118-K Item 1.05Life sciences & medical devices1 follow-up
- Bitcoin Depot2026-04-088-K Item 1.05Financial services
From the archive
Browse by yearDisclosures from earlier years, compiled from the filings. A different set each week.
Disclosures by month
Month the company filed its first disclosure, from December 2023, when Item 1.05 took effect. Earlier entries are on the incidents page.
| Month | Disclosures |
|---|---|
| 2026-09 | 2 |
| 2026-08 | 2 |
| 2026-07 | 3 |
| 2026-06 | 3 |
| 2026-05 | 1 |
| 2026-04 | 1 |
| 2026-03 | 3 |
| 2026-02 | 1 |
| 2026-01 | 0 |
| 2025-12 | 1 |
| 2025-11 | 1 |
| 2025-10 | 3 |
| 2025-09 | 0 |
| 2025-08 | 2 |
| 2025-07 | 0 |
| 2025-06 | 2 |
| 2025-05 | 2 |
| 2025-04 | 2 |
| 2025-03 | 1 |
| 2025-02 | 1 |
| 2025-01 | 0 |
| 2024-12 | 2 |
| 2024-11 | 1 |
| 2024-10 | 1 |
| 2024-09 | 0 |
| 2024-08 | 2 |
| 2024-07 | 3 |
| 2024-06 | 1 |
| 2024-05 | 4 |
| 2024-04 | 3 |
| 2024-03 | 3 |
| 2024-02 | 4 |
| 2024-01 | 3 |
| 2023-12 | 2 |
Analysis
- Two years of SEC cyber incident disclosures: what companies actually said
56 Item 1.05 incidents from December 2023 to September 2026: a median six days from detection to first 8-K, a shift toward health care, and the materiality date.
How to read an entry
Dates are as each filing states them. Where a filing gives no detection date, the field is blank rather than estimated. The security seat field comes from the CISO Tribune record and implies nothing about the incident.