Plea agreements signed by two top sales executives with the failed Cay Clubs Resorts and Marinas firm might require them to testify in other cases related to the $300 million collapse of the company.

In a federal hearing in Key West, Barry J. Graham, 59, and Ricky Lynn Stokes, 54, both of Fort Myers, each pleaded guilty Dec. 9 to one count of conspiracy to commit bank fraud.

“The defendant agrees that he shall cooperate fully” with South Florida U.S. Attorney’s Office prosecutors, according to the agreements signed separately by Stokes and Graham.

That cooperation includes “providing truthful and complete information and testimony … at any trial or other court proceeding.”