Apollo Funds will acquire all outstanding shares of Shutterfly for $51 per share in cash, which represents a premium of roughly 1.5% to Shutterfly's closing price on Monday. Shutterfly ended the trading day up 2.7%, and was briefly halted in extended trading.
Shares resumed trading a fraction of 1% lower.
"We look forward to working closely with Apollo as we continue to build a compelling service that enables deeper, more personal relationships for our customers, and to advance our digital and manufacturing capabilities to support sustainable growth," said William Lansing, Shutterfly's Chairman of the Board.
In a separate announcement on Monday, Shutterfly named Ryan O'Hara president and CEO, effective June 24.