Top executive leaving Sepracor

Long-time Sepracor Inc. chief financial officer David Southwell said he is resigning next week to pursue “other entrepreneurial activities.” Sepracor said it will replace Southwell with Robert Scumaci, the company’s executive vice president for corporate finance.

The Marlborough drug maker is best known for its Lunesta sleep aid and Xopenex, an asthma treatment.

Southwell has been chief financial officer for 14 years.
(By Todd Wallack, Globe staff)