Astrana Health Discloses Material Cybersecurity Incident Involving Unauthorized Data Access
ASTH sits 94% above its 52-week low of $18.08.
Summary
Astrana Health disclosed a material cybersecurity incident involving social engineering attacks that led to unauthorized access to confidential data, including potentially patient and employee information. The company has engaged forensic experts, notified law enforcement and regulators, and is still assessing the full impact.
Key Events · Legal and Risk Events · ASTH
-
Material Cybersecurity Incident Disclosed
Threat actors impersonated company personnel and spoofed the corporate phone number to gain unauthorized access to Astrana Health systems. The company believes confidential data was accessed or acquired.
-
Sensitive Data Potentially Compromised
The investigation is assessing whether patient, employee, credentialed provider, confidential business, financial, or intellectual property information was exfiltrated. The company determined the incident is material as of September 22, 2026.
-
Regulatory and Legal Exposure
Astrana Health notified law enforcement, state and federal regulators, and payer partners. The company will make required notifications to impacted patients as findings emerge, creating potential regulatory and litigation risk.
-
Remediation Underway
The company reset affected credentials, restricted remote access tools, restored systems from clean backups, and enhanced monitoring and detection. A third-party cybersecurity and forensics firm is engaged.
Analysis · ASTH · Trade & Services
A material cybersecurity incident has been disclosed by Astrana Health, in which threat actors leveraged social engineering and caller-ID spoofing to gain unauthorized access to company systems. Confidential information—potentially including patient, employee, and provider data—is believed to have been accessed or acquired. While the company does not currently expect a material financial impact, the incident involves sensitive healthcare data, triggers regulatory and legal notification obligations, and could damage trust with providers, patients, and payer partners. The investigation is ongoing and the full scope remains unknown.
How filings like this one have moved
In the 30 days to Oct 1, 2026, 36.1% of the 1052 measured filings Wiseek scored 8 moved their stock by 5% or more by the next session's close. The median move was -0.56%. These are measured outcomes after filings of this importance, not a forecast for this one.
Measured one observation per ticker per day, after exclusions. Current figures: Filing Impact Tracker · open dataset
At the time of this filing, ASTH was trading at $35.11 on NASDAQ in the Trade & Services sector, with a market capitalization of approximately $1.7B. The 52-week trading range was $18.08 to $51.60. This filing was assessed with negative market sentiment and an importance score of 8 out of 10.