Personnel

TCF Financial Corp., Wayzata, has named Tom Butterfield executive vice president and chief information officer. Butterfield was most recently senior vice president, technology strategy and business solutions for Target Corp.

Debt and equities

The Mosaic Co., Plymouth, announced the expected impact from recent changes in Saskatchewan's Potash Production Tax (CRT) calculation will increase the company's 2015 CRT pretax payments by $80 million to $100 million. Mosaic is examining ways to mitigate the increase and will update all guidance on April 30.