AssetMark Data Breach Exposes Investment Account Details

AssetMark, Inc., a prominent wealth management platform, reported a data security incident to the Oregon Attorney General on June 11, 2026. The breach, which occurred on or about May 15, 2026, involves the exposure of sensitive consumer data maintained within AssetMark's network infrastructure. This event raises significant concerns for investors and account holders.

The compromised information includes Full Name, Social Security Number, Date of Birth, Financial Account Number, Routing Number, Investment Portfolio Details, Transaction History, and Mailing Address. The exposure of such detailed financial records, particularly Social Security Numbers and account data, creates substantial long-term risks for those affected, including potential unauthorized account access and identity theft.

As a financial services entity, AssetMark, Inc. is obligated by laws like the Gramm-Leach-Bliley Act to implement robust security measures to protect client data. The occurrence of this breach suggests potential failures in safeguarding highly confidential financial and personal records, which could make the company legally liable for the incident.

If you received a data breach notification letter from AssetMark, Inc., it confirms your information was compromised while under their care. This notification is crucial as it establishes your standing to participate in legal action aimed at holding the company accountable. Our team handles these cases on a contingency fee basis, meaning you pay no out-of-pocket costs unless we recover compensation for you.

Understanding the potential impact of this breach is essential. We offer free case reviews to help you understand your rights and explore whether joining a class action lawsuit is appropriate for your situation. Our dedicated legal team is prepared to assist you through this process.