(Reuters) - A large investor in SandRidge Energy Inc
Hedge fund TPG-Axon, which said it owns 6.5 percent of SandRidge shares, sent a second letter to SandRidge on Friday outlining a plan to ask SandRidge shareholders to replace the entire board and de-stagger the board's composition.
Shares of SandRidge rose 1.6 percent to $5.76 in Friday morning trading.
(Reporting By Ernest Scheyder; Editing by Gerald E. McCormick)
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