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AssetMark, Inc. Data Breach (June 2026): What Was Exposed and What To Do

Last updated Oct 20, 2026 · Based on 3 official filings · See sources

According to the notice filed with the Washington State Attorney General on Jun 11, 2026, AssetMark, Inc. reported a data breach. It was also reported to the Texas Attorney General and the California Attorney General. People affected: 570,000 people (official total in the Texas Attorney General filing, filed Jun 18, 2026).

Key facts

From 3 official filings
Organization
AssetMark, Inc.
Source: Washington State Attorney General, filed Jun 11, 2026
People affected
570,000
Official total in the Texas Attorney General filing, filed Jun 18, 2026
Source: Texas Attorney General, filed Jun 18, 2026
Incident dates
May 15, 2026
Source: Washington State Attorney General, filed Jun 11, 2026
Discovered May 15, 2026
Source: Washington State Attorney General, filed Jun 11, 2026
Notice dates
First filed Jun 11, 2026; latest filing Jun 26, 2026
Source: Washington State Attorney General, filed Jun 11, 2026
Information exposed
  • Social Security number
  • Name
Sources: Washington AG, Jun 11, 2026; Texas AG, Jun 18, 2026
Filed with
Free credit monitoring
Offered: 24 months through Epiq
Source: notice letter in the California Attorney General filing of Jun 26, 2026

What to do now

Steps chosen from the information listed in the official filings. Your own letter may list more.

  1. AssetMark, Inc. offered free credit monitoring for 24 months through Epiq. Use the enrollment code printed in your letter. Never share that code with anyone who contacts you.

    Source: notice letter in the California Attorney General filing of Jun 26, 2026

  2. A credit freeze stops new credit accounts being opened in your name. It is free by law and you can lift it when you need credit: Equifax, Experian and TransUnion.

  3. An IP PIN stops someone else filing a tax return with your Social Security number. Get one from the IRS at irs.gov.

  4. Scammers often contact people after a breach, pretending to be the organization, a bank or a government agency. Do not give your Social Security number, passwords or codes to anyone who contacts you first.

  5. You can get free credit reports from all three bureaus at AnnualCreditReport.com, the official site.

  6. The Federal Trade Commission's IdentityTheft.gov gives you a personal recovery plan.

Is the letter real?

The agency published an official copy of the notice. Compare your letter with it:

The notice letter filed with the California Attorney General on Jun 26, 2026 lists this phone number for questions: 1-866-659-7108. If the number in your letter is different, call the number in the official copy instead.

Source: notice letter in the California Attorney General filing of Jun 26, 2026

Never give your Social Security number, bank details or passwords to someone who contacts you first.

Timeline

  1. Incident began (earliest date reported) source
  2. Organization discovered the incident source
  3. Reported to Washington AG source
  4. Reported to Texas AG source
  5. Reported to California AG source

Sources

  1. Washington State Attorney General Notice filed Jun 11, 2026
    Filed as “AssetMark, Inc.” · 15,468 Washington residents
    The link opens the Attorney General's list of notices.
  2. Texas Attorney General Notice filed Jun 18, 2026
    Filed as “AssetMark, Inc.” · 29,802 Texas residents · total 570,000
    The link opens the agency's list; search it for the organization name.
  3. California Attorney General Notice filed Jun 26, 2026
    Filed as “AssetMark, Inc.” · Official copy of the letter

Last updated Oct 20, 2026. Our summaries are written in our own words from the official filings above. Spotted an error? Report a correction.