Exhibit 99.1 PRESS RELEASE NCS Multistage Holdings, Inc. 19350 State Highway 249, Suite 600 Houston, Texas 77070 NCS MULTISTAGE HOLDINGS, INC. ANNOUNCES SECOND QUARTER 2024 RESULTS Second Quarter Results ● Total revenues of 29.7million,a17(3.1) million and loss per share of (1.21)●AdjustedEBITDAof0.9 million, a 3.2millionyear−over−yearimprovement●Cashflowsfromoperatingactivitiesof4.1 milli ...