#1 Represents 2,648 shares of the Issuer's common stock awarded to the Reporting Person upon the vesting of a portion of an award of performance stock units ("PSUs") in connection with the closing of the transactions contemplated by the Merger Agreement (as defined below).

#2 The shares were disposed of pursuant to the Agreement and Plan of Merger dated as of July 7, 2022 (the "Merger Agreement") by and among the Issuer and SD Biosensor, Inc., a corporation with limited liability organized under the laws of the Republic of Korea whereby, immediately prior to the effective time of the merger contemplated therein (the "Effective Time"), all issued and outstanding shares of Issuer common stock were converted into the right to receive $34.00 per share in cash and, when so converted, automatically cancelled.

#1 Represents 2,648 shares of the Issuer's common stock awarded to the Reporting Person upon the vesting of a portion of an award of performance stock units ("PSUs") in connection with the closing of the transactions contemplated by the Merger Agreement (as defined below).

#2 The shares were disposed of pursuant to the Agreement and Plan of Merger dated as of July 7, 2022 (the "Merger Agreement") by and among the Issuer and SD Biosensor, Inc., a corporation with limited liability organized under the laws of the Republic of Korea whereby, immediately prior to the effective time of the merger contemplated therein (the "Effective Time"), all issued and outstanding shares of Issuer common stock were converted into the right to receive $34.00 per share in cash and, when so converted, automatically cancelled.

#1 Represents 2,648 shares of the Issuer's common stock awarded to the Reporting Person upon the vesting of a portion of an award of performance stock units ("PSUs") in connection with the closing of the transactions contemplated by the Merger Agreement (as defined below).

#2 The shares were disposed of pursuant to the Agreement and Plan of Merger dated as of July 7, 2022 (the "Merger Agreement") by and among the Issuer and SD Biosensor, Inc., a corporation with limited liability organized under the laws of the Republic of Korea whereby, immediately prior to the effective time of the merger contemplated therein (the "Effective Time"), all issued and outstanding shares of Issuer common stock were converted into the right to receive $34.00 per share in cash and, when so converted, automatically cancelled.

#1 Represent restricted stock units withheld by the Company under the net share settlement method to cover certain taxes due upon vesting of units granted on September 16, 2019.