(Reuters) - Citigroup Inc
O'Neill acquired 28,200 shares through a trust at an average price of $35.52 each, the third-biggest U.S. bank said on Wednesday in a regulatory filing.
O'Neill hand-picked new CEO Michael Corbat after the departure of Pandit in mid-October.
Shares of Citigroup closed at $35.07 on Wednesday on the New York Stock Exchange.
(Reporting by Ritika Rai in Bangalore; Editing by Richard Pullin)
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