Private investment firm Samson Investment Partners plans to acquire Essex National Securities, one of the third-party marketing firms in the bank channel, from Addison Avenue Financial Partners. The purchase price was not disclosed.

Samson is an investment firm founded by Roy J. Zuckerberg, a former vice chairman and head of Equities at Goldman Sachs.

Scott Davis, CEO and President of Essex National Securities, told Bank Investment Consultant that Samson was committed to a “significant capital support” of the business that will include expanding the number of financial institutions and advisors in its network. He declined to provide specifics on numbers.

“Our partnership with Samson Investment Partners represents the optimal outcome for ENSI and our partner financial institutions,” Davis said in the press release announcing the deal.

Zuckerberg said in the release: “ENSI has positioned itself as a recognized leader in providing investment services programs for financial institutions. ENSI is poised for continued growth in the coming years as we believe banking institutions will play an increasingly important role in the financial services industry. We stand behind Scott and the entire ENSI team going forward.”

The deal is expected to close this quarter, subject to customary regulatory reviews and approvals.