The top scripted programming executive of NBC is departing the troubled network, clearing the decks as Comcast Corp. readies itself to take control of NBC from General Electric Co., as stated by a person aware of the matter.

The president of prime-time time entertainment at NBC and its in-house production arm, Angela Bromstad, told her staff on Thursday that she will be departing the company when the Comcast deal gets squared up as stated by the person.

Comcast had received regulatory approval on Tuesday for its agreement to take control of network parent NBC Universal and is expected to square up the deal at the end of next week, people aware of the transaction said.

It is not clear if Bob Greenblatt, who will join the firm as chairman of NBC Entertainment, supervising all entertainment programming on the network, will seek a replacement to fill her role.

NBC Universal has been shuffling its executives leading up the planned completion of Comcast's majority acquisition of the TV, film and theme-park company next week. Robert Greenblatt, former programming chief at CBS Corp.'s Showtime, will be replacing Jeff Gaspin as chairman of NBC Entertainment.

Stephen Burke, the chief operating officer of Philadelphia-based Comcast is replacing Jeff Zucker as chief executive officer of NBC Universal.

The switch is coming at a crucial juncture for NBC, just as it must start giving orders for pilot episodes of new television series for the coming year. Ms. Bromstad has supervised two underwhelming development seasons, after stepping into her current role in the month of December 2008.

As of this fall average prime-time audience among viewers between eighteen and forty nine years old of NBC has gone down by 4.4% compared with the same time two years ago.