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Adam Jeffery | CNBC

A senior investment banker at Barclays is set to leave following a combined 17 years at the bank and the one it acquired, Lehman Brothers.

Larry Wieseneck, now head of global distribution and structuring at Barclays, will depart in June to "pursue other interests," according to an internal memo sent to employees today that was obtained by CNBC.com.

Wieseneck's replacement was unclear. A spokesman for Barclays declined to comment. Wieseneck did not immediately respond to requests.

Wieseneck was co-head of global finance at Lehman Brothers before it was acquired by Barclays during the 2008 financial crisis.

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Here's the full memo sent today from Eric Bommensath and Tom King, co-CEOs of the investment bank:

Having played a significant leadership role in transforming the Investment Bank over the past 17 years, Larry Wieseneck has decided to leave Barclays at the end of June to pursue other interests. We are very grateful for everything he has achieved for the firm.

He will work closely with the Co-heads of Securities in the coming months on a transition plan for the Distribution, Structuring and Senior Relationship Management (SRM) businesses, which we will announce in due course.

Larry has led numerous businesses across the firm, most recently as Co-head of Securities, running the Distribution, Structuring and SRM businesses since August 2013. Before that hewas Chief Strategy Officer and Chief of Staff for Corporate and Investment Banking. He spent the prior eight years integrating and building the Global Finance and Risk Solutions business in IBD at Lehman Brothers and then again at Barclays following the acquisition in 2008.

During his tenure, he has also played a significant role in shaping our culture through his leadership in the Transform Programme, and has led the Citizenship agenda for Corporate and Investment Banking for the past two years.

Larry has played an importantleadership role in building the Barclays client franchise across both IBD and Markets. Please join us in thanking Larry for his significant contributions over many years and in wishing him the very best for the future.

Eric and Tom

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