Trask spent 25 seasons with the Raiders starting during their time in Los Angeles and continuing after the move to Oakland in 1995. She became CEO in 1997 and was one of late owner Al Davis' most trusted advisers before his death in October 2011.
"Earlier today, I informed Mark Davis of my decision to leave the Raiders," she said in an email statement. "Having honored a commitment that I made to effectuate a smooth transition and transfer of control, I no longer wish to remain with the organization. For over a quarter of a century, it was my honor and my privilege to work for the Raiders. I will forever appreciate the opportunity afforded me by Al Davis."
Mark Davis took over the Raiders following his father's death. He hired general Reggie McKenzie to run the football operations in January 2012 and has been looking for a potential team president this offseason.
The organization has been almost completely overhauled since Al Davis' death with most of the coaches, scouts and many front office executives no longer part of the Raiders.
Trask's main focus of late was on improving Oakland's stadium situation. The Raiders are in the final year of their lease at the outdated Coliseum in Oakland and would like to reach a deal with the city to build a new stadium near the current site.
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