Exhibit 21.1
SUBSIDIARIES OF NCS MULTISTAGE HOLDINGS, INC.
| Subsidiary | State or Other Jurisdiction of Formation | |
Pioneer Intermediate, Inc. | Delaware | |
Pioneer Investment, Inc. | Delaware | |
Pioneer NCS Energy Holdco, LLC | Texas | |
NCS Multistage, LLC | Texas | |
NCS International, LLC | Texas | |
NCS International 2, LLC | Texas | |
NCS Argentina, SRL | La Plata, Argentina | |
NCS Multistage, Inc. | Alberta, Canada |
