AIR · Aar Corp

Award of stock pursuant to a Performance Restricted Stock Agreement in a transaction exempt under Rule 16b-3.

Award of stock pursuant to a Restricted Stock Agreement in a transaction exempt under Rule 16b-3.

Award of stock pursuant to a Performance Restricted Stock Agreement in a transaction exempt under Rule 16b-3.

Award of stock pursuant to a Restricted Stock Agreement in a transaction exempt under Rule 16b-3

Award of stock pursuant to a Performance Restricted Stock Agreement in a transaction exempt under Rule 16b-3.

Award of stock pursuant to a Performance Restricted Stock Agreement in a transaction exempt under Rule 16b-3. The performance-based stock cliff vests on July 31, 2031 (the "Vesting Date"), subject to Mr. Holmes' continued service through such date (other than in certain limited circumstances), and may only be earned based on, and to the extent of, the achievement of stock price vesting conditions that will be met when the 30-day volume weighted average trading price of a share of the Company's common stock meets or exceeds one or more of the following stock price hurdle thresholds on or prior to July 31, 2031: (1) $175 stock price - one-third shares will vest on the Vesting Date; (2) $200 stock price - an additional one-third shares will vest on the Vesting Date; and (3) $275 stock price - an additional one-third shares will vest on the Vesting Date. The number of shares reported herein assumes the target stock price metrics are met.

Award of stock pursuant to a Restricted Stock Agreement in a transaction exempt under Rule 16b-3.

Award of stock pursuant to a Performance Restricted Stock Agreement in a transaction exempt under rule 16b-3.

Award of stock pursuant to a Restricted Stock Agreement in a transaction exempt under Rule 16b-3.

Award of stock pursuant to a Restricted Stock Agreement in a transaction exempt under Rule 16b-3.

Award of stock pursuant to a Performance Restricted Stock Agreement in a transaction exempt under Rule 16b-3.

Represents additional restricted stock acquired upon certification of performance criteria (at a level exceeding the target level) pursuant to a Restricted Stock Agreement. The initial target award amount was reported on a Form 4 filed on July 26, 2023.

Represents additional restricted stock acquired upon certification of performance criteria (at a level exceeding the target level) pursuant to a Restricted Stock Agreement. The initial target award amount was reported on a Form 4 filed on July 26, 2023.

Represents additional restricted stock acquired upon certification of performance criteria (at a level exceeding the target level) pursuant to a Restricted Stock Agreement. The initial target award amount was reported on a Form 4 filed on July 26, 2023 and adjusted as noted in a footnote to the Form 4 filed on July 17, 2025.

Represents additional restricted stock acquired upon certification of performance criteria (at a level exceeding the target level) pursuant to a Restricted Stock Agreement. The initial target award amount was reported on a Form 4 filed on July 26, 2023.

Award of stock pursuant to a Restricted Stock Agreement in a transaction exempt under Rule 16b-3.

Award of stock pursuant to Restricted Stock Agreement in transaction exempt under Rule 16b-3.

Award of stock pursuant to a Restricted Stock Agreement in a transaction exempt under Rule 16b-3.

Phantom Stock units are payable in stock on a 1-for-1 basis or cash at the grantee's election upon retirement/termination as a director.

Award of stock pursuant to a Restricted Stock Agreement in a transaction exempt under Rule 16b-3.

Award of stock pursuant to a Restricted Stock Agreement in a transaction exempt under Rule 16b-3.

Award of stock pursuant to a Restricted Stock Agreement in a transaction exempt under Rule 16b-3.

Award of stock pursuant to Restricted Stock Agreement in transaction exempt under Rule 16b-3.

Award of stock pursuant to a Restricted Stock Agreement in a transaction exempt under Rule 16b-3.

Phantom Stock units are payable in stock on a 1-for-1 basis or cash at the grantee's election upon retirement/termination as a director.

Award of stock pursuant to Restricted Stock Agreement in transaction exempt under Rule 16b-3.

Phantom Stock units are payable in stock on a 1-for-1 basis or cash at the grantee's election upon retirement/termination as a director.

Award of stock pursuant to Restricted Stock Agreement in a transaction exempt under Rule 16b-3.

Award of stock pursuant to Restricted Stock Agreement in transaction exempt under Rule 16b-3.

Each share of phantom stock is the economic equivalent of one share of common stock. The shares of phantom stock become payable, in cash or common stock, at the election of the reporting person, upon the reporting person's termination of service as a director or on other dates as specified by the director pursuant to the Non-Employee Directors' Deferred Compensation Plan.

Each share of phantom stock is the economic equivalent of one share of common stock. The shares of phantom stock become payable, in cash or common stock, at the election of the reporting person, upon the reporting person's termination of service as a director or on other dates as specified by the director pursuant to the Non-Employee Directors' Deferred Compensation Plan.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $107.5000 to $107.7075 inclusive. The reporting person undertakes to provide AAR CORP., any security holder of AAR CORP., or the staff of the 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 $107.5000 to $107.7075 inclusive. The reporting person undertakes to provide AAR CORP., any security holder of AAR CORP., or the staff of the 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 $111.8200 to $113.2400, inclusive. The reporting person undertakes to provide AAR CORP., any security holder of AAR CORP., or the staff of the 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 awarded stock option vests and becomes exercisable in 1/3 annual installments beginning on July 31, 2025 and shall vest as follows: 33 and 1/3% on each of July 31, 2025, July 31, 2026, and July 31, 2027.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $111.8200 to $113.2400, inclusive. The reporting person undertakes to provide AAR CORP., any security holder of AAR CORP., or the staff of the 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.

Award of stock pursuant to a Restricted Stock Agreement in a transaction exempt under Rule 16b-3.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $111.0000 to $111.0100, inclusive. The reporting person undertakes to provide AAR CORP., any security holder of AAR CORP., or the staff of the 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 awarded stock option vests and becomes exercisable in 1/3 annual installments beginning on July 31, 2024 and shall vest as follows: 33 and 1/3% on each of July 31, 2024, July 31, 2025, and July 31, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $112.0000 to $115.0000 inclusive. The reporting person undertakes to provide AAR CORP., any security holder of AAR CORP., or the staff of the 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 $111.8200 to $113.2400, inclusive. The reporting person undertakes to provide AAR CORP., any security holder of AAR CORP., or the staff of the 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.

Each share of phantom stock is the economic equivalent of one share of common stock. The shares of phantom stock become payable, in cash or common stock, at the election of the reporting person, upon the reporting person's termination of service as a director or on other dates as specified by the director pursuant to the Non-Employee Directors' Deferred Compensation Plan.

Each share of phantom stock is the economic equivalent of one share of common stock. The shares of phantom stock become payable, in cash or common stock, at the election of the reporting person, upon the reporting person's termination of service as a director or on other dates as specified by the director pursuant to the Non-Employee Directors' Deferred Compensation Plan.