Caggiano, a veteran investment banker who spent 23 years with JPMorgan, will join Morgan Stanley as vice chairman of M&A, the sources said.

The sources requested anonymity because the matter is confidential. JPMorgan and Morgan Stanley declined to comment.

Caggiano had worked on several high-profile situations, including advising Twitter Inc on its $44 billion sale to Elon Musk, Take Two on its $12.7 billion acquisition of mobile video game maker Zynga, and toy maker Hasbro Inc on its board fight with hedge fund Alta Fox.

Caggiano trained as a lawyer and worked at Paul Hastings before he joined JPMorgan. He was co-head of North America M&A before Chris Roop, his other co-head, exited JPMorgan last year to join Jefferies Financial Group Inc.

(Reporting by Svea Herbst-Bayliss in Rhode Island and Anirban Sen in New York; Editing by Greg Roumeliotis)

By Svea Herbst-Bayliss and Anirban Sen