Tom Atkinson has stepped down as president and CEO of the market regulator, Market Regulation Services Inc.

RS announced that its board has accepted the resignation of Atkinson, effective today. It appointed Maureen Jensen as his replacement. Jensen was formerly vice president, Market Regulation, Eastern Region, at RS.

RS is currently in ongoing merger talks with the Investment Dealers Association of Canada. Earlier this year, Susan Wolburgh-Jenah was hired to be the new CEO of the combined regulators. Pending the merger she is heading the IDA.