Chesapeake Energy Corp. Chief Executive Officer Aubrey McClendon

Chesapeake Energy Corp. Chief Executive Officer Aubrey McClendon

F. Carter Smith/Bloomberg

Chesapeake Energy Corp. Chief Executive Officer Aubrey McClendon e-mailed employees on Oct. 10, 2008, urging them “just to ignore” the decline in Chesapeake’s shares, which he attributed to fallout from the global financial collapse triggered by Lehman Brothers Holdings Inc.’s bankruptcy 26 days earlier.