EXHIBIT 99
Joint Filer Information
Each of the following joint filers has designated Crestview Partners II GP, L.P. as the “Designated Filer” for purposes of the attached Form 4:
| 1. |
Crestview Partners II SES Investment B, LLC c/o Crestview Partners 590 Madison Avenue, 42nd floor New York, NY 10022 |
| 2. |
Crestview Partners II SES Investment, LLC c/o Crestview Partners 590 Madison Avenue, 42nd floor New York, NY 10022 |
Date of Event Requiring Statement: May 19, 2026
Issuer Name and Ticker or Trading Symbol: Select Water Solutions, Inc. [WTTR]
| CRESTVIEW PARTNERS II SES INVESTMENT B, LLC | |||
| By: | /s/ Poojitha Manta | ||
| Name: Poojitha Manta | |||
| Title: Chief Compliance Officer | |||
| CRESTVIEW PARTNERS II SES INVESTMENT, LLC | |||
| By: | /s/ Poojitha Manta | ||
| Name: Poojitha Manta | |||
| Title: Chief Compliance Officer | |||
Date: May 21, 2026