Two top programming executives have quietly departed Oprah Winfrey’s OWN cabler in recent weeks.

A spokeswoman for OWN confirmed Tuesday that Maria Grasso and Nina Wass have ankled their posts as senior veeps at the cabler jointly owned by Discovery Communications and Winfrey.

The changes follow the appointment of Jamila Hunter, the former NBC exec who was named head of programming for the Burbank-based OWN in June (Daily Variety, June 5). Grasso and Wass were both hired by Robin Schwartz, who departed abruptly in April. Schwartz’s role as president of the channel became redundant after Winfrey hired former MTV prexy Christina Norman as CEO in January (Daily Variety, Jan. 30).

Grasso joined OWN from Lifetime last October. Wass joined the company in August 2008. Neither exec could be reached for comment.

The two were in charge of scripted, alternative, short- and longform programming at OWN, with Wass taking responsibility for the creative department, production and scheduling.

OWN is slated to bow in 70 million homes early next year as a makeover of the channel currently branded as Discovery Health.

(Claire Atkinson writes for Daily Variety sister publication Broadcasting & Cable.)