This excerpt taken from the PRVT 8-K filed Nov 3, 2009.
Section 12.4 Restriction on Transfer
A holder may not Transfer any Exchangeable Shares (or any other securities of Corporation received on account of the holders ownership of Exchangeable Shares) unless such Transfer is (i) a Transfer of Exchangeable Shares by such holder for the Exchangeable Share Consideration pursuant to the terms hereof or the Exchange and Support Agreement or (ii) is a Transfer approved by the Board of Directors, which approval may be withheld for any reason, and (iii) provided such Transfer complies with the restrictions on transfers contained in the Exchange and Support Agreement. As used above, the term Transfer includes the making of any sale, exchange, assignment, hypothecation, gift, security interest, pledge or other encumbrance, or any contract therefor, any trust or other agreement or arrangement with
respect to the beneficial interest in such securities, the creation of any other claim thereto or any other transfer or disposition whatsoever, whether voluntary or involuntary, affecting the right, title, interest or possession in or to such securities.