Mather Group acquires Washington DC area company Seiffert Ltd.

CHICAGO–(BUSINESS WIRE)–The Mather Group, LLC (TMG), a wealth management firm with 12 offices across the country and more than $7.5 billion in assets under management (AUM, as of 06/30/22), announced its acquisition of Seiffert Ltd., a state-registered investment advisory (RIA) firm based in Bethesda, MD.

Seiffert Ltd. has managed its clients’ assets, approximately $65 million in assets under management as of 6/30/22, on a fee-only basis since its founding in 1994. Founder Perry Seiffert, co-owner Alexia Larson and portfolio administrator Kathy O’Brien joined TMG as part of the deal. “Our partnership with TMG means we are backed by its team of nearly 150 professionals serving our clients,” Seiffert said. “As well as adding value for clients, it gives me comfort to begin implementing plans for my own retirement, knowing that Alexia will not take full responsibility for managing our clients and of our business operations.

“I am delighted that TMG’s organizational strength (in investment management, trading, client services, operations, technology, compliance, etc.) is helping to ease our administrative burden. I will be able to focus fully on advising our clients and building those relationships,” added Larson. “It creates a situation where the whole will be greater than the sum of its parts.”

When integrating partner firms and their clients, TMG is committed to maintaining continuity in the advisor-client relationship. “We understand the trust and comfort that clients have established with their current advisors, and we don’t want to disrupt that,” said Chris Behrens, CEO of TMG. “Rather, we can help these advisors improve the client experience by giving them access to a wider range of services and solutions, a cutting-edge technology platform and a larger team of highly qualified professionals.”

TMG was recently ranked No. 22 in the Top 50 Fastest Growing Companies by Financial Advisor magazine, which ranked RIA companies by their percentage of asset growth from 2020 to 2021. During this period, TMG’s assets under management grew by more than 58% and its workforce grew by 66% to help maintain and improve the high level of service TMG aims to deliver through its national boutique model.

The firm offers a full range of in-house services, including financial planning, tax advice and preparation, portfolio management, concentrated inventory management, risk assessment and estate planning advice. Investment recommendations are not related to commissions. Clients pay the firm’s experienced advisors on a fee-only basis, usually as a percentage of assets under management. This approach aligns the interests of the company and the client.


Based in Chicago with offices in Atlanta, Austin, Dallas, Houston, Knoxville, Morristown (NJ), Nashville Area, San Francisco Bay Area, Seattle Area, Spring (TX), and Washington, DC Area, TMG is a fee-paying trustee. company primarily serving high net worth individuals. TMG professionals aim to make life easier for customers by offering a full range of services under one roof. TMG is a federally registered investment adviser under the Investment Advisers Act of 1940, as amended, providing discretionary and non-discretionary investment advice to clients. Visit us at

Rankings are based on voluntary, non-paying surveys. Each organization sets its own criteria for inclusion. The information is accurate as of the date of this press release, and no obligation or intention to make any updates or corrections exists. Visit the TMG website for more information on its awards and recognition.