With pressure from a group of RIM shareholders, RIM is allegedly devising a corporate shake up. This could have co-CEOs, Mike Lazaridis and Jim Balsillie, relinquish their titles as co-chairmen of the board.

Sources say Barbara Stymiest, who joined RIM’s board in 2007, is believed to be the leading candidate for the chairman role. Ms. Stymiest, is apart of a committee of seven independent directors, who have been examining the company’s board structure. Including the merits of having an independent chair rather than a lead director and the “business necessity”.

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So far today, RIM shares have risen nearly 7% on talks of the Mike Lazaridis and Jim Balsillie co-Chairmen split.

via FP