Macquarie Group Ltd. added Kevin Byrne and Michelle Riffelmacher to its U.S. transition management business within its commodities and global markets group.

Byrne joins as a senior vice president focused on business development and transaction management. He most recently was a managing director at Loop Capital Markets LLC.

Riffelmacher joins as a vice president focused on business development and relationship management. She previously was a vice president in Citigroup Inc.'s prime brokerage business.

Both Byrne and Riffelmacher will be based out of Macquarie's New York office.