X0306 4 2017-02-24 0 0001175151 Cytosorbents Corp CTSO 0001368152 Kraus Al C/O CYTOSORBENTS CORPORATION 7 DEER PARK DRIVE, SUITE K MONMOUTH JUNCTION NJ 08852 1 0 0 0 Common Stock 2017-02-24 4 A 0 6000 0 A 121746 D Stock Option (right to buy) 5.60 2017-02-24 4 A 0 27500 0 A 2027-02-24 Common Stock 27500 27500 D These shares represent restricted stock units and will be settled into common stock upon vesting upon a "Change In Control" of CytoSorbents Corporation, as defined in the CytoSorbents Corporation 2014 Long-Term Incentive Plan. Includes (i) 6,000 restricted stock units granted on February 24, 2017 and reported on this Form 4, (ii) 5,000 restricted stock units granted on June 7, 2016, subject to vesting in accordance with the schedule set forth in (1) above, (iii) 55,000 restricted stock units granted on April 8, 2015, subject to vesting in accordance with the schedule set forth in (1) above and (iv) 55,746 shares of common stock owned by the reporting person. Such options were granted pursuant to the CytoSorbents Corporation 2014 Long-Term Incentive Plan, which vest in four equal parts at the end of each calendar quarter beginning April 1, 2017. /s/ Ronald E. Berger, attorney-in-fact For Al Kraus 2017-02-28