The Mather Group Acquires Washington D.C.-area Firm, Seiffert Ltd.

CHICAGO--()--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 6/30/22), has announced its acquisition of Seiffert Ltd., a state-registered investment adviser (RIA) firm based in Bethesda, MD.

Seiffert Ltd. has managed its clients’ assets, approximately $65 million in AUM 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 have joined TMG as part of the transaction. “Partnering with TMG means we are supported by its team of nearly 150 professionals in serving our clients,” said Seiffert. “In addition to adding value for clients, this gives me the comfort to begin putting plans in motion for my own retirement, knowing that Alexia won’t shoulder the full responsibility of managing both our clients and our business operations.”

“I am excited that TMG’s organizational strength—in investment management, trading, client services, operations, technology, compliance, and more—is going to help relieve our administrative burden. I’ll be able to dedicate myself fully to 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 clients have established with their current advisors, and we don’t want to disrupt that,” said TMG CEO Chris Behrens. “Rather, we can support those advisors in improving the client experience by providing access to a broader range of services and solutions, a cutting-edge technology platform, and a larger team of highly credentialed professionals.”

TMG was recently ranked #22 on Financial Advisor magazine’s Top 50 Fastest Growing Firms, which ranked RIA firms based on their percentage growth in assets from 2020 to 2021. In that time, TMG’s AUM grew by more than 58%—and its headcount grew by 66% to help maintain and enhance the high level of service TMG aims to deliver via its national boutique model.

The firm offers a comprehensive range of in-house services, including financial planning, tax advice and preparation, portfolio management, concentrated stock management, risk assessment, and estate planning guidance. Investment recommendations are not tied to commissions. Clients pay for the firm's experienced advice on a fee-only basis, typically as a percentage of assets under management. This approach helps align the interests of the firm and the client.


Headquartered 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-only fiduciary firm serving primarily high-net-worth individuals. TMG’s professionals aim to simplify clients’ lives by providing a comprehensive suite 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-fee-paying surveys. Each organization establishes its own criteria for inclusion. Information is accurate as of the date of this press release, and no obligation nor intention to make updates or corrections exist. Visit the TMG website for more information regarding its awards and recognition.