NINE ENERGY SERVICE, INC. filed this 4 on 05/20/2026

NINE ENERGY SERVICE, INC. - 4 - 20260520 - EXPLANATIONS_AND_REMARKS
Explanation of Responses:
(1) Represents time-based restricted stock units that will vest in three equal installments beginning on the first anniversary of the applicable vesting commencement date, subject to the Reporting Person's continued employment through each applicable vesting date.

Remarks:
Senior Vice President and Chief Accounting Officer
The Form 4 filed on behalf of the Reporting Person on 3/6/2026 inadvertently included a check box mark indicating the Reporting Person was no longer subject to Section 16, which was an error.