This excerpt taken from the PNC 8-K filed Oct 30, 2008.
Grant of Option. (a) Issuer hereby grants to Grantee an unconditional, irrevocable option (the Option) to purchase, subject to the terms hereof, up to 405,163,602 fully paid and nonassessable shares of Issuers Common Stock, par value $4.00 per share (Common Stock), at a price per share equal to $2.75 per share (the Option Price); provided, however, that in no event shall the number of shares of Common Stock for which this Option is exercisable exceed 19.9% of the Issuers issued and outstanding shares of Common Stock without giving effect to any shares subject to or issued pursuant to the Option. The number of shares of Common Stock that may be received upon the exercise of the Option and the Option Price are subject to adjustment as herein set forth.
(b) In the event that any additional shares of Common Stock are either (i) issued or otherwise become outstanding after the date of this Agreement (other than pursuant to this Agreement) or (ii) redeemed, repurchased, retired or otherwise cease to be outstanding after the date of this Agreement, the number of shares of Common Stock subject to the Option shall be increased or decreased, as appropriate, so that, after such issuance, such number equals 19.9% of the number of shares of Common Stock then issued and outstanding without giving effect to any shares subject or issued pursuant to the Option. Nothing contained in this Section 1(b) or elsewhere in this Agreement shall be deemed to authorize Issuer or Grantee to breach any provision of the Merger Agreement.