Almeida Law Group is investigating a data breach at Mariner Wealth Advisors, LLC. The breach occurred on November 21, 2025, and was discovered on November 24, 2025. If you were affected, contact Almeida Law Group.
About Mariner Wealth Advisors, LLC
Mariner Wealth Advisors, LLC is a privately held national wealth management firm founded in 2006 and headquartered in Overland Park, Kansas. It is one of the largest registered investment advisors in the United States, offering services that include wealth planning, investment management, tax planning, estate planning, trust services, insurance solutions, and retirement planning. Because the firm works with clients’ financial accounts and personal identifying information, a breach involving names, account numbers, Social Security numbers, and dates of birth carries meaningful risk of identity theft and financial fraud.
What Happened?
Mariner Wealth Advisors, LLC was listed in a Maine Attorney General data breach filing reported on June 1, 2026. The incident was an external system breach — hacking — in which a criminal third party accessed the cloud application accounts of three Mariner associates and downloaded certain files. The downloaded files contained affected individuals’ names, account numbers, dates of birth, and Social Security numbers or other government ID numbers. A total of 8,995 individuals were affected. Mariner notified consumers by written notice dated May 29, 2026 — approximately six months after the breach was discovered on November 24, 2025. Mariner stated that financial accounts, investment accounts, and other client accounts are held on entirely separate systems that were not affected by this incident. The company has engaged third-party researchers to monitor online sources for signs of data misuse and reports that none has been found. Federal law enforcement and regulatory authorities were contacted. No ransomware group or threat actor has been publicly attributed to the incident.
This breach is separate from an earlier incident involving Newport Advisory, LLC — now doing business as Mariner Wealth Advisors — in which unauthorized actors accessed and copied files from Newport’s network in late December 2024, detected January 12, 2025, affecting 9,323 individuals. The current November 2025 breach is a distinct incident.
Key Facts at a Glance
- Company or Organization: Mariner Wealth Advisors, LLC
- Industry: Financial Services / Wealth Management
- Location: Overland Park, Kansas
- Incident type: External system breach (hacking)
- Date of breach: November 21, 2025
- Date breach discovered: November 24, 2025
- Date of consumer notification: May 29, 2026
- Total persons affected: 8,995
- Identity theft protection offered: Yes — 12-month CyberScout (by TransUnion) single-bureau credit and identity monitoring
- Enrollment deadline: 90 days from the date of the notification letter (by approximately August 27, 2026)
- Prior breach: Yes — Newport Advisory, LLC (now Mariner Wealth Advisors), breach detected January 12, 2025, affecting 9,323 individuals
- Source: Maine AG Filing; ClaimDepot – Newport/Mariner Prior Breach; Strauss Borrelli – Newport Advisory Investigation
What Should You Do?
If you received a notice from Mariner Wealth Advisors, you should enroll in the complimentary 12-month CyberScout credit monitoring service as soon as possible — the enrollment deadline is 90 days from the date of your notification letter. You can enroll at bfs.cyberscout.com/activate using the unique code provided in your notice. Because Social Security numbers and account numbers were involved, you should also consider placing a fraud alert or credit freeze with the three major credit bureaus (Equifax, Experian, and TransUnion). Review your financial account statements and credit reports closely for any unfamiliar activity. You can request free annual credit reports at AnnualCreditReport.com. If you suspect your identity has been misused, visit IdentityTheft.gov for step-by-step guidance on reporting and recovery.
Your Legal Rights
If your personal information was involved in this breach, you may have legal rights depending on the facts of the incident and the law in your state. Almeida Law Group represents consumers in data breach and privacy litigation and can help you evaluate whether you may have a claim. Contact us at (708) 529-5418 or through our contact page for a free case evaluation.
