4. COMMON SHARES
Common shares issued during the period were as follows: Quarter Ended March 31, 2013 Number of Shares Amount (in thousands) ($ millions)----------------------------------------------------------------------------Balance, beginning of period 191,566 3,121 Dividend Reinvestment Plan 563 19 Consumer Share Purchase Plan 9 - Employee Share Purchase Plan 146 5 Stock Option Plans 192 4----------------------------------------------------------------------------Balance, end of period 192,476 3,149--------------------------------------------------------------------------------------------------------------------------------------------------------
As at March 31, 2013, Fortis had 18.5 million Subscription Receipts outstanding, which were issued by the Corporation in June 2012 to finance a portion of the pending acquisition of CH Energy Group (Note 1). The Subscription Receipts began trading on the Toronto Stock Exchange on June 27, 2012 under the symbol "FTS.R".
Each Subscription Receipt will entitle the holder thereof to receive, on satisfaction of the release conditions, and without payment of additional consideration, one common share of Fortis and a cash payment equal to the dividends declared on Fortis common shares during the period from June 27, 2012 to the date of issuance of the common shares in respect of the Subscription Receipts to holders of record (Note 19).
5. NON-CONTROLLING INTERESTS
As at March 31, December 31,($ millions) 2013 2012----------------------------------------------------------------------------Waneta Expansion Limited Partnership ("Waneta Partnership") 242 220Caribbean Utilities 72 71Mount Hayes Limited Partnership 12 12Preference shares of Newfoundland Power 7 7---------------------------------------------------------------------------- 333 310--------------------------------------------------------------------------------------------------------------------------------------------------------6. STOCK-BASED COMPENSATION PLANS
In January 2013 8,497 Deferred Share Units ("DSUs") were granted to the Corporation's Board of Directors, representing the first quarter equity component of the Directors' annual compensation and, where opted, their first quarter component of annual retainers in lieu of cash. Each DSU represents a unit with an underlying value equivalent to the value of one common share of the Corporation.
In March 2013 66,978 Performance Share Units ("PSUs") were paid out to the President and Chief Executive Officer ("CEO") of the Corporation at $33.59 per PSU, for a total of approximately $2 million. The payout was made upon the three-year maturation period in respect of the PSU grant made in March 2010 and the President and CEO satisfying the payment requirements, as determined by the Human Resource Committee of the Board of Directors of Fortis.



