X0306 4 2019-06-28 0 0001705843 Calyxt, Inc. CLXT 0001753563 Blome James 2800 MOUNT RIDGE ROAD ROSEVILLE MN 55113 0 1 0 0 Chief Executive Officer Common Stock 2019-06-28 4 A 0 50000 0 A 204136 D Stock Option (Right-to-Buy) 12.48 2019-06-28 4 A 0 125000 0 A 2020-06-28 2029-06-28 Common Stock 125000 125000 D Performance Stock Units 2019-06-28 4 A 0 166667 0 A 2022-06-28 Common Stock 166667 166667 D 50,000 Restricted Stock Units with respect to Calyxt, Inc. common stock were granted to reporting person on 6/28/2019 and vest as to 15% of the underlying shares on the first anniversary of the Grant Date, as to 10% of the underlying shares on the second anniversary of the Grant Date, and as to 5% of the underlying shares on the last day of each calendar quarter beginning on the first full calendar quarter after the second anniversary of the Grant Date. Stock Option vests as to 15% of the underlying shares on the first anniversary of the Grant Date, as to 10% of the underlying shares on the second anniversary of the Grant Date, and as to 5% of the underlying shares on the last day of each calendar quarter beginning the first full calendar quarter after the second anniversary of the Grant Date. Each performance stock unit (PSU) represents a contingent right to receive one share of Calyxt common stock. The PSU will vest as to 50%, 100% or 120% of the shares at the end of a three year performance period based upon increases in Calyxt common stock from the starting price of $12.48 (and on a linear basis between vesting percentages) and if vested, will be issued as restricted stock with restrictions lapsing on the two year anniversary of the date of issuance. Dr. Andre Choulika, Attorney-in-Fact for James Blome 2019-07-02