The Jefferies-advised deal extends the firm's ownership of a portfolio of properties from its 2015-vintage White Rock Fund II platform.
Evercore and Morgan Stanley acted as financial advisers to Amulet on the transaction, while Kirkland & Ellis served as legal adviser. Debevoise & Plimpton advised StepStone.
Marone will join as a Managing Director in the Private Capital Advisory team and will focus on GP-led secondaries across North America.
The vehicle involves a portfolio of Bakken oil and gas properties previously held in the manager's 2014-vintage Fund III.
The former Northleaf executive will lead Golub Equity Continuation Partners, working closely with the Co-Head of Sponsor Finance, Greg Cashman.
The New York hire adds experience across secondary funds and GP-led liquidity transactions to the firm's Private Capital & Funds Practice.