Exxon Mobil admitted in Manhattan Supreme Court Wednesday that it lost a year’s worth of emails from the alias account used by Secretary of State Rex Tillerson when he was the company’s CEO.

Tillerson — whose middle name is Wayne and went by the alias “Wayne Tracker” in the sensitive emails to company board members — is among those being investigated by ​New York Attorney General Eric Schneiderman for ​allegedly ​deceiving investors about Exxon’s XOM, -1.61% scientific research on climate-change impact.