During the year ended December 31, 2012 the Company issued 1,894,452 shares of common stock as follows:

Inter-Atlantic warrant exercise		917,602
Employee option exercises		488,513
Consideration shares upon acquisition of BPS		488,337
Total common stock issued		1,894,452

During the year ended December 31, 2011 the Company issued 5,695,909 shares of common stock as follows:

April 2011 debt conversion(1)		4,474,776
Restricted stock grant to Philip D. Beck(2)		915,000
Exercise of options and warrants		296,133
Other		10,000
Total common stock issued		5,695,909

(1) In April 2011, the convertible debt holders converted the outstanding principal amount of $9.0 million under convertible notes issued in 2007 and 2008 into an aggregate of 4,049,776 shares of common stock. In addition, the Company issued 127,318 shares of common stock valued at $0.3 million in lieu of cash payments for accrued interest and 297,682 shares of common stock valued at $0.6 million as a prepayment fee negotiated at the time of conversion. The shares issued for the accrued interest and the prepayment fee were valued at the average closing price of the Company’s common stock on AIM under the symbol “PPTR” during the 10 trading day period ending two days prior to the conversion.

(2) Please Refer to Note 2, Stock-based expense and assumptions, for further information regarding the restricted stock grant to Philip D. Beck.

During the year ended December 31, 2010 the Company issued 6,898,283 shares of common stock as follows:

October 22, 2010 private placement(3)		4,500,000
Exercise of options and warrants(4)		1,540,386
Payment of accrued interest on convertible debt(5)		602,272
Payment of interest on term debt(6)		255,625
Total common stock issued		6,898,283

(3) On October 22, 2010 the Company completed a private placement of 4,500,000 new shares of common stock at a price of $1.34 per share raising approximately $6.03 million (before expenses). The shares of common stock were issued to institutional investors. The net proceeds of the private placement provided additional working capital and were used to pay off term debt.

(4) The Company issued 1,526,718 new shares of common stock upon the exercise of warrants for $2.0 million and repaid in cash the $2.0 million balance of principal on the term debt, which was discharged as of November 30, 2010. Refer to Note 6 for further information.

(5) During the year ended December 31, 2010, the Company issued 602,272 new shares of common stock, in payment of $0.8 million of accrued interest on convertible debt.

(6) During the year ended December 31, 2010, the Company issued 255,625 new shares of common stock, in payment of $0.3 million of accrued interest on term debt.