X0508 4 2026-03-03 0001692427 NCS Multistage Holdings, Inc. NCSM 0001236472 DEANE JOHN D 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 32771 D Common Stock 10731 I By Family Partners Limited Includes 3,221 restricted stock units which vest and settle on February 28, 2027. These securities are held by the Deane Family Partnership Limited, a limited partnership of which the Reporting Person is the sole general partner. The Reporting Person disclaims beneficial ownership of the Issuer's securities held by the Deane Family Partnership Limited except to the extent of his pecuniary interest therein. /s/ Ori Lev, attorney-in-fact 2026-03-03