Shares of VeriSign (VRSN) fell Friday after the company said its chief financial officer, Brian Robins, has resigned.

The former finance head left the company to pursue other opportunities, VeriSign said in a statement. His resignation as CFO was effective on Sept. 7, and he will remain on board as an employee until Sept. 30 to help with the transition.

This decision was a very difficult one for me to make, Robins said. I wish the best for my VeriSign colleagues.

VeriSign assured shareholders that the news was not the result of anything that would have had an adverse impact on the integrity of the companys financial statements or the results of its operations.

The company reaffirmed its fiscal 2011 guidance. 

The provider of Internet infrastructure services said it will name an interim chief financial officer soon.

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