CLEVELAND -- Three former Pilot Flying J sales employees were in federal court Monday, pleading guilty to charges relating to a rebate scheme inside Browns owner Jimmy Haslam's family company.

That makes ten people who have admitted to their respective roles in the plot, including high-level executives.

Brian Mosher, Pilot's former national sales director, pleaded guilty to felony charges of wire fraud and mail fraud.

He admitted in court to altering spreadsheets that contained customer rebates to increase company profits and his commission, and to managing others who did. He also said he taught other employees how to do this during a training conference in Knoxville in 2012.

He claimed several members of Pilot Flying J's "senior management" were in attendance at that conference.

Mosher's home in Bettendorf, Iowa was raided along with Pilot's headquarters in April 2013.

Each charge carries a maximum of 20 years in prison and a $250,000 fine. Sentencing guidelines show Mosher will likely spend at least 10 years in prison as a result of the plea.

Former Pilot sales manager Christopher Andrews pleaded guilty to one count of conspiracy to commit wire fraud and mail fraud. He pleaded by way of information and waiving a grand jury.

Lexie Holden, a former national sales manager who supported Mosher according to court documents, pleaded guilty to one count of conspiracy to commit mail fraud and wire fraud.

Andrews and Holden each face up to five years in prison and a $250,000 fine.

Holden started with Pilot Flying J as an Administrative Assistant in 2008 and worked her way up to a National Sales Manager.

She told the judge "I was directed by my superiors to make changes to the rebates." She also said the rebate scheme was going on before she started working with the company.

She said she had entered information into a spreadsheet before emailing that file to Mosher.

Mosher was mentioned by name by at least one victim of the Pilot rebate scheme, Morehouse Trucking in Oklahoma.

"I'm just waiting for the call to say Brian Mosher is in prison," Curt Morehouse told 10News in June. "That's the call that I want. He was Kevin's boss and our former sales rep. That's why my anger is mostly directed at Brian Mosher because he was the one who started doing it when we were already a customer of theirs."

Seven other former Pilot executives have pleaded guilty since the federal investigation began last April. Pilot has settled a class action lawsuit worth $85 million related to the alleged scheme, and are still fighting other civil suits.

Browns owner, Jimmy Haslam, has not been indicted on any criminal charges throughout this investigation. He has repeatedly said he knew nothing of the scheme.

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