X0306 4 2013-11-07 0001180145 Cardiovascular Systems Inc CSII 0001358186 Blackey Brent G 651 CAMPUS DRIVE ST. PAUL MN 55112 1 0 0 0 Common Stock 2013-11-07 4 X 0 22356 8.83 A 54645 D Stock Option (right to buy) 7.90 2017-10-08 Common Stock 38820 38820 D Stock Option (right to buy) 7.90 2017-10-08 Common Stock 6470 6470 D Warrant (right to buy) 8.83 2013-11-07 4 X 0 22356 0 D 2010-11-30 2014-02-24 Common Stock 22356 0 D Restricted Stock Units Common Stock 5714 5714 D Restricted Stock Units Common Stock 11628 11628 D Restricted Stock Units Common Stock 21739 21739 D Restricted Stock Units Common Stock 7192 7192 D Restricted Stock Units Common Stock 10917 10917 D Restricted Stock Units 2015-08-13 2015-08-13 Common Stock 2749 2749 D Restricted Stock Units Common Stock 4580 4580 D Fully exercisable. Each restricted stock unit represents the right to receive a payment from CSI equal in value to the market price per share of CSI common stock on the date of payment and shall be payable in cash or shares of Company common stock beginning six months following the termination of each director's board membership. Each restricted stock unit represents the right to receive a payment from CSI equal in value to the market price per share of CSI common stock on the date of payment and shall be payable in cash or shares of Company common stock on the payment date. Each restricted stock unit represents the right to receive a payment from CSI equal in value to the market price per share of CSI common stock on the date of payment, and shall be payable in cash or shares of Company common stock beginning six months following the termination of each director's board membership; provided, however, that the restricted stock units vest in quarterly amounts of 1,145 on each of September 30, 2013, December 31, 2013, March 31, 2014 and June 30, 2014. /s/ Alexander Rosenstein as Attorney-in-Fact for Brent G. Blackey pursuant to Power of Attorney previously filed. 2013-11-12