X0508 4 2026-03-03 0001692427 NCS Multistage Holdings, Inc. NCSM 0001608353 Mitchell Valerie A C/O NCS MULTISTAGE HOLDINGS, INC. 19350 STATE HIGHWAY 249, SUITE 600 HOUSTON TX 77070 1 0 Common Stock 2026-03-03 4 A 0 3221 0 A 26772 D Includes 3,221 restricted stock units which vest and settle on February 28, 2027 and 19,212 vested restricted stock units which settle within thirty days following the earlier of (i) the termination of the Reporting Person's service for any reason or (ii) a change of control. /s/ Ori Lev, attorney-in-fact 2026-03-03