X0306 4 2022-11-22 0001692427 NCS Multistage Holdings, Inc. NCSM 0001699918 Stromquist Marty C/O NCS MULTISTAGE HOLDINGS, INC. 19350 STATE HIGHWAY 249, SUITE 600 HOUSTON TX 77070 1 0 0 0 Common Stock 2022-11-22 4 S 0 515 26.69 D 32658 I By Corporation Common Stock 2022-11-22 4 S 0 100 27.60 D 32558 I By Corporation Common Stock 9355 D Common Stock 5672 I See Footnote The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.50 to $27.20. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (1) and (3) to this Form 4. Held by Stromquist Technologies Inc., a corporation of which the Reporting Person is a controlling shareholder. The Reporting Person disclaims beneficial ownership of the Issuer's securities held by Stromquist Technologies Inc. except to the extent of his pecuniary interest therein. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $27.50 to $27.67. Includes 3,038 restricted stock units which vest and settle on February 28, 2023. Held by Cemblend Systems Inc. Cemblend Systems Inc. is indirectly 50% owned by the Reporting Person. The Reporting Person disclaims beneficial ownership of the Issuer's securities held by Cemblend Systems Inc. except to the extent of his pecuniary interest therein. /s/ Ori Lev, attorney-in-fact 2022-11-22