NINE · Nine Energy Service, Inc.

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.

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.

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.

Represents time-based restricted stock units that will vest on June 30, 2027, subject to the Reporting Person's continued service through the applicable vesting date; provided, however, that in the event the Reporting Person is up for re-election at the Issuer's next annual meeting of stockholders and is not elected to continue serving as a member of the board of directors at such annual meeting of stockholders, the shares shall be deemed fully vested on that annual meeting date.

Represents time-based restricted stock units that will vest on June 30, 2027, subject to the Reporting Person's continued service through the applicable vesting date; provided, however, that in the event the Reporting Person is up for re-election at the Issuer's next annual meeting of stockholders and is not elected to continue serving as a member of the board of directors at such annual meeting of stockholders, the shares shall be deemed fully vested on that annual meeting date.

Represents time-based restricted stock units that will vest on June 30, 2027, subject to the Reporting Person's continued service through the applicable vesting date; provided, however, that in the event the Reporting Person is up for re-election at the Issuer's next annual meeting of stockholders and is not elected to continue serving as a member of the board of directors at such annual meeting of stockholders, the shares shall be deemed fully vested on that annual meeting date.

Represents time-based restricted stock units that will vest on June 30, 2027, subject to the Reporting Person's continued service through the applicable vesting date; provided, however, that in the event the Reporting Person is up for re-election at the Issuer's next annual meeting of stockholders and is not elected to continue serving as a member of the board of directors at such annual meeting of stockholders, the shares shall be deemed fully vested on that annual meeting date.

Represents time-based restricted stock units that will vest on June 30, 2027, subject to the Reporting Person's continued service through the applicable vesting date; provided, however, that in the event the Reporting Person is up for re-election at the Issuer's next annual meeting of stockholders and is not elected to continue serving as a member of the board of directors at such annual meeting of stockholders, the shares shall be deemed fully vested on that annual meeting date.

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.

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.

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.

On March 4, 2026, in connection with the emergence of Nine Energy Service, Inc. (the "Issuer") from Chapter 11 bankruptcy, all of the Issuer's shares of common stock, par value $0.01 per share, were cancelled for no consideration.

On March 4, 2026, in connection with the emergence of Nine Energy Service, Inc. (the "Issuer") from Chapter 11 bankruptcy, all of the Issuer's shares of common stock, par value $0.01 per share, were cancelled for no consideration.

On March 4, 2026, in connection with the emergence of Nine Energy Service, Inc. (the "Issuer") from Chapter 11 bankruptcy, all of the Issuer's shares of common stock, par value $0.01 per share, were cancelled for no consideration.

On March 4, 2026, in connection with the emergence of Nine Energy Service, Inc. (the "Issuer") from Chapter 11 bankruptcy, all of the Issuer's shares of common stock, par value $0.01 per share, were cancelled for no consideration.

On March 4, 2026, in connection with the emergence of Nine Energy Service, Inc. (the "Issuer") from Chapter 11 bankruptcy, all of the Issuer's shares of common stock, par value $0.01 per share, were cancelled for no consideration.

On March 4, 2026, in connection with the emergence of Nine Energy Service, Inc. (the "Issuer") from Chapter 11 bankruptcy, all of the Issuer's shares of common stock, par value $0.01 per share, were cancelled for no consideration.

On March 4, 2026, in connection with the emergence of Nine Energy Service, Inc. (the "Issuer") from Chapter 11 bankruptcy, all of the Issuer's shares of common stock, par value $0.01 per share, were cancelled for no consideration.

On March 4, 2026, in connection with the emergence of Nine Energy Service, Inc. (the "Issuer") from Chapter 11 bankruptcy, all of the Issuer's shares of common stock, par value $0.01 per share, were cancelled for no consideration.

On March 4, 2026, in connection with the emergence of Nine Energy Service, Inc. (the "Issuer") from Chapter 11 bankruptcy, all of the Issuer's shares of common stock, par value $0.01 per share, were cancelled for no consideration.

On November 9, 2025, Richard A. Burnett informed Nine Energy Service, Inc. (the "Issuer") of his intention to resign from the board of directors of the Issuer, effective immediately. Pursuant to the Restricted Stock Agreement, dated as of May 8, 2025, between the Issuer and Mr. Burnett, these shares of restricted stock, to vest on May 8, 2026 (the first anniversary of the grant date), were awarded to Mr. Burnett for his membership on the Issuer's board of directors and are thus forfeited upon such termination of directorship.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $0.620 to $0.661, inclusive. The reporting person undertakes to provide to Nine Energy Service, Inc., any securities holder of Nine Energy Service, Inc., or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

These shares of restricted stock will vest on May 8, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $0.620 to $0.625, inclusive. The reporting person undertakes to provide to Nine Energy Service, Inc., any securities holder of Nine Energy Service, Inc., or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $0.685 to $0.744, inclusive. The reporting person undertakes to provide to Nine Energy Service, Inc., any securities holder of Nine Energy Service, Inc., or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $0.660 to $0.686, inclusive. The reporting person undertakes to provide to Nine Energy Service, Inc., any securities holder of Nine Energy Service, Inc., or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $0.708 to $0.745, inclusive. The reporting person undertakes to provide to Nine Energy Service, Inc., any securities holder of Nine Energy Service, Inc., or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

The sale reported on this Form 4 reflects the non-discretionary sale of shares of common stock of Nine Energy Service, Inc. by the reporting person necessary to satisfy tax withholding obligations in connection with the vesting of the time-based restricted stock award granted on May 9, 2023.

The sale reported on this Form 4 reflects the non-discretionary sale of shares of common stock of Nine Energy Service, Inc. by the reporting person necessary to satisfy tax withholding obligations in connection with the vesting of the time-based restricted stock award granted on May 9, 2023.

The sale reported on this Form 4 reflects the non-discretionary sale of shares of common stock of Nine Energy Service, Inc. by the reporting person necessary to satisfy tax withholding obligations in connection with the vesting of the time-based restricted stock award granted on May 9, 2023.

The sale reported on this Form 4 reflects the non-discretionary sale of shares of common stock of Nine Energy Service, Inc. by the reporting person necessary to satisfy tax withholding obligations in connection with the vesting of the time-based restricted stock award granted on May 9, 2023.

The sale reported on this Form 4 reflects the non-discretionary sale of shares of common stock of Nine Energy Service, Inc. by the reporting person necessary to satisfy tax withholding obligations in connection with the vesting of the time-based restricted stock award granted on May 9, 2023.

These shares of restricted stock will vest on May 8, 2026 (the first anniversary of the grant date).

These shares of restricted stock will vest on May 8, 2026 (the first anniversary of the grant date).

These shares of restricted stock will vest in three equal annual installments on the first three anniversaries of the grant date.

These shares of restricted stock will vest on May 8, 2026 (the first anniversary of the grant date).

These shares of restricted stock will vest on August 1, 2025.

These shares of restricted stock will vest in three equal annual installments on the first three anniversaries of the grant date.

These shares of restricted stock will vest in three equal annual installments on the first three anniversaries of the grant date.

These shares of restricted stock will vest in three equal annual installments on the first three anniversaries of the grant date.

These shares of restricted stock will vest on May 8, 2026 (the first anniversary of the grant date).

These shares of restricted stock will vest in three equal annual installments on the first three anniversaries of the grant date.

The sale reported on this Form 4 reflects the non-discretionary sale of shares of common stock of Nine Energy Service, Inc. by the reporting person necessary to satisfy tax withholding obligations in connection with the vesting of the time-based restricted stock award granted on May 7, 2024.

The sale reported on this Form 4 reflects the non-discretionary sale of shares of common stock of Nine Energy Service, Inc. by the reporting person necessary to satisfy tax withholding obligations in connection with the vesting of the time-based restricted stock award granted on May 7, 2024.

The sale reported on this Form 4 reflects the non-discretionary sale of shares of common stock of Nine Energy Service, Inc. by the reporting person necessary to satisfy tax withholding obligations in connection with the vesting of the time-based restricted stock award granted on May 7, 2024.

The sale reported on this Form 4 reflects the non-discretionary sale of shares of common stock of Nine Energy Service, Inc. by the reporting person necessary to satisfy tax withholding obligations in connection with the vesting of the time-based restricted stock award granted on May 7, 2024.

The sale reported on this Form 4 reflects the non-discretionary sale of shares of common stock of Nine Energy Service, Inc. by the reporting person necessary to satisfy tax withholding obligations in connection with the vesting of the time-based restricted stock award granted on May 7, 2024.

The sale reported on this Form 4 reflects the non-discretionary sale of shares of common stock of Nine Energy Service, Inc. by the reporting person necessary to satisfy tax withholding obligations in connection with the vesting of the time-based restricted stock award granted on May 3, 2022.

The sale reported on this Form 4 reflects the non-discretionary sale of shares of common stock of Nine Energy Service, Inc. by the reporting person necessary to satisfy tax withholding obligations in connection with the vesting of the time-based restricted stock award granted on May 3, 2022.

Reflects the transfer of 561 shares of common stock by the reporting person to his ex-spouse since the date of the reporting person's last ownership report.