X0407 4 2023-04-27 1 0001180145 Cardiovascular Systems Inc CSII 0001818614 Rempe Stephen J. 1225 OLD HIGHWAY 8 NW ST. PAUL MN 55112 0 1 0 0 Chief Human Resources Officer 0 Common Stock 2023-04-27 4 D 0 75659 20.00 D 8561 D Common Stock 2023-04-27 4 D 0 8561 20.00 D 0 D Pursuant to the Agreement and Plan of Merger by and among Cardiovascular Systems, Inc., a Delaware corporation, Abbott Laboratories, an Illinois corporation, and Cobra Acquisition Co., a Delaware corporation (the "Merger Agreement"), each share of unvested restricted stock became fully vested immediately prior to the effective time of the merger. Shares of restricted stock were then cancelled as of the effective time of the merger in exchange for the right to receive a cash payment equal to $20.00 multiplied by the number of restricted stock units, without interest and less any required withholding of taxes. Converted pursuant to the Merger Agreement into the right to receive $20.00 in cash per share, without interest and less any required withholding taxes. /s/ Andrew Nick as Attorney-in-Fact for Stephen J. Rempe pursuant to Power of Attorney previously filed. 2023-04-27