Exhibit 21
VERSUM MATERIALS, INC.
LIST OF SUBSIDIARIES
Subsidiary | Jurisdiction of Organization | |
| Showa Denko Versum Materials 2 Co., Ltd. | Japan | |
| Showa Denko Versum Materials Co., Ltd. | Japan | |
| Versum Materials (Dalian) Co., Ltd. | China | |
| Versum Materials Germany GmbH | Germany | |
| Versum Materials HYT Inc. | Korea | |
| Versum Materials Ireland, Limited | Ireland | |
| Versum Materials Israel, Ltd. | Israel | |
| Versum Materials Italia S.r.l. | Italy | |
| Versum Materials Japan Inc. | Japan | |
| Versum Materials ADM Korea Inc. | Korea | |
| Versum Materials Korea Inc. | Korea | |
| Versum Materials Malaysia, Sdn Bhd | Malaysia | |
| Versum Materials Netherlands B.V. | Netherlands | |
| Versum Materials PM Korea, Inc. | Korea | |
| Versum Materials (Shanghai) Co., Ltd. | China | |
| Versum Materials Singapore Pte. Ltd. | Singapore | |
| Versum Materials SPC Korea Limited | Korea | |
| Versum Materials Taiwan Co. Ltd. | Taiwan | |
| Versum Materials Technology, LLC (Taiwan Branch) | Taiwan | |
| Versum Materials UK Ltd. | England and Wales | |
| Versum Materials US, LLC | Delaware | |