The New York Stock Exchange announced that its chief financial officer, Amy Butte, will be leaving in May.

“With Amy’s decision to leave the exchange later this year, the NYSE will lose a strategically valuable and effective member of the senior management team,” said NYSE chief executive John Thain upon accepting the resignation of Butte as CFO and executive vice president, effective May 31.

Butte joined the NYSE on Feb. 5, 2004. Prior to joining the NYSE, she was at Credit Suisse First Boston helping lead the development of the firm’s global asset-gathering division and the sale of the firm’s correspondent clearing business, Pershing, to the Bank of New York. Prior to that, she was an equity research analyst at Bear Stearns, responsible for coverage of the brokerage, asset-gathering and financial-technology industries.

She started her equity research career at Merrill Lynch. She has also worked at various financial technology companies within the industry.

“As the first outside hire in 2004, I have had the privilege of working closely with John Thain and the board of directors in developing and executing a strategy to ensure that the NYSE sustains a leadership role in the evolving global financial marketplace. I am proud of the accomplishments we’ve made in the area of corporate governance. The NYSE can truthfully claim to be best in class, setting an example for listed companies and shareholders from around the world,” she said.

Butte will be active in seeing the NYSE Group through its merger integration process with the Archipelago electronic exchange

“Amy joined the Exchange at a critically important time in the exchange’s history, and brought with her a wealth of experience, insight and vision,” Thain said. “Amy led the drive to improve efficiencies, modernized the exchange’s financial systems and processes, and helped reinvent our business and pricing models. I am especially grateful to Amy for her invaluable work on the NYSE/ Archipelago merger. On behalf of all my colleagues at the NYSE, I wish her great success in her future endeavors.”