Companies must tell investors in advance where to look, agency says.

Companies must tell investors in advance where to look, agency says.

Agency's report provides standard for using social media.

Agency's report provides standard for using social media.

Mary Jo White, now a partner at Debevoise & Plimpton, is being considered to succeed Elisse Walter.

Departure to come early next month, with no replacement yet chosen.

Departure to come early next month, with no replacement yet chosen.

Geoffrey Aronow, now a Bingham McCutchen partner, said to be leading candidate.