This excerpt taken from the PNC 8-K filed Oct 30, 2008.
Repurchase. (a) In the event of a Repurchase Event (as hereinafter defined), (i) following a request of the Holder, delivered prior to an Exercise Termination Event, Issuer (or any successor thereto) shall repurchase the Option from the Holder immediately after the Repurchase Event at a price (the Option Repurchase Price) equal to the product of the number of shares for which this Option may then be exercised multiplied by the amount by which (A) the Market/Offer Price (as hereinafter defined) exceeds (B) the Option Price, and (ii) at the request of the owner of Option Shares from time to time (the Owner), delivered prior to an Exercise Termination Event and within 90 days after the occurrence of a Repurchase Event, Issuer (or any successor thereto) shall repurchase immediately after such request from the Owner such number of the Option Shares from the Owner as the Owner shall designate at a price (the Option Share Repurchase Price) equal to the Market/Offer Price multiplied by the number of Option Shares so designated. The term Market/Offer Price shall mean the highest of (i) the price per share of Common Stock at which a tender offer or exchange offer therefor has been made, (ii) the price per share of Common Stock to be paid by any third party pursuant to an agreement with Issuer, (iii) the highest closing price for shares of Common Stock within the six-month period immediately preceding the date the Holder gives notice of the required repurchase of this Option or the Owner gives notice of the required repurchase of Option Shares, as the case may be, and (iv) in the event of a sale of all or a substantial portion of Issuers assets, the sum of the price paid in such sale for such assets and the current market value of the remaining assets of Issuer as determined by a nationally recognized investment banking firm selected by the Holder or the Owner, as the case may be, and reasonably acceptable to Issuer, divided by the number of shares of Common Stock of Issuer outstanding at the time of such sale. In determining the Market/Offer Price, the value of consideration other than cash shall be determined by a nationally recognized investment banking firm selected by the Holder or Owner, as the case may be, and reasonably acceptable to the Issuer.
(b) The Holder or the Owner, as the case may be, may exercise its right to require Issuer to repurchase the Option and any Option Shares pursuant to this Section 7 by surrendering for such purpose to Issuer, at its principal office, this Agreement or certificates for Option Shares, as applicable, accompanied by a written notice or notices stating that the Holder or the Owner, as the case may be, elects to require Issuer to repurchase this Option and/or the Option Shares in accordance with the provisions of this Section 7. Within five business days after the surrender of the Option and/or certificates representing Option Shares and the receipt of such notice or notices relating thereto, Issuer shall deliver or cause to be delivered to the Holder the Option Repurchase Price and/or to the Owner the Option Share Repurchase Price therefor or the portion thereof, if any, that Issuer is not then prohibited under applicable law and regulation from so delivering.
(c) To the extent that Issuer is prohibited under applicable law or regulation from repurchasing the Option and/or the Option Shares to the full extent requested by the Holder or Owner, as the case may be, Issuer shall immediately so notify the Holder and/or the Owner and thereafter deliver or cause to be delivered, from time to time, to the Holder and/or the Owner, as appropriate, the portion of the Option Repurchase Price and the Option Share
Repurchase Price, respectively, that it is no longer prohibited from delivering, within five business days after the date on which Issuer is no longer so prohibited; provided, however, that if Issuer at any time after delivery of a notice of repurchase pursuant to paragraph (b) of this Section 7 is prohibited under applicable law or regulation from delivering to the Holder and/or the Owner, as appropriate, the Option Repurchase Price and the Option Share Repurchase Price, respectively, to said full extent (and Issuer hereby undertakes to use its reasonable best efforts to obtain all required regulatory and legal approvals and to file any required notices, in each case as promptly as practicable in order to accomplish such repurchase), the Holder or Owner may revoke its notice of repurchase of the Option or the Option Shares either in whole or to the extent of the prohibition, whereupon, in the latter case, Issuer shall promptly (i) deliver to the Holder and/or the Owner, as appropriate, that portion of the Option Repurchase Price or the Option Share Repurchase Price that Issuer is not prohibited from delivering; and (ii) deliver, as appropriate, either (A) to the Holder, a new Stock Option Agreement evidencing the right of the Holder to purchase that number of shares of Common Stock obtained by multiplying the number of shares of Common Stock for which the surrendered Stock Option Agreement was exercisable at the time of delivery of the notice of repurchase by a fraction, the numerator of which is the Option Repurchase Price less the portion thereof theretofore delivered to the Holder and the denominator of which is the Option Repurchase Price, or (B) to the Owner, a certificate for the Option Shares it is then so prohibited from repurchasing.
(d) For purposes of this Section 7, a Repurchase Event shall be deemed to have occurred upon the consummation of (i) a merger, consolidation, reorganization or other transaction involving Issuer or any of its Subsidiaries as a result of which the holders of the Issuer Common Stock prior to such transaction (by virtue of their ownership of such stock) cease to own, in the aggregate, at least 50% of the total voting power of the entity surviving or resulting from such transaction (or, if applicable, the ultimate parent thereof), (ii) any sale of more than 50% of the consolidated assets (including stock of its Subsidiaries) of Issuer and its Subsidiaries, taken as a whole, or (iii) any issuance or sale of, or tender or exchange offer for, voting securities of Issuer resulting in the ownership by any Person of more than 50% of the total voting power of Issuer (unless the stockholders of Issuer immediately prior to such transaction would own in the aggregate more than 50% of such acquiring Person).