AAR CORP.
SUPPLEMENTAL KEY EMPLOYEE RETIREMENT PLAN

As Amended and Restated Effective July 13, 2020

TABLE OF CONTENTS

		Page
ARTICLE I	DEFINITIONS	1
ARTICLE II	ELIGIBILITY	5
ARTICLE III	SUPPLEMENTAL CONTRIBUTIONS	5
ARTICLE IV	FORFEITURES	13
ARTICLE V	ADMINISTRATION OF THE PLAN	14
ARTICLE VI	AMENDMENT OR TERMINATION	14
ARTICLE VII	GENERAL PROVISIONS	15

-i-

AAR CORP.

SUPPLEMENTAL KEY EMPLOYEE RETIREMENT PLAN

As Amended and Restated Effective July 13, 2020

WHEREAS, the AAR CORP. Supplemental Key Employee Retirement Plan (the “Plan”) was adopted effective June 1, 1994, for designated Executive Officers and Key Employees of AAR CORP. and its Affiliated Companies who participate in the qualified retirement plans from time to time established and maintained by AAR CORP. (the “Company”). The purpose of the Plan is to ensure that the retirement benefits provided to Executive Officers and Key Employees enhance the overall effectiveness of the Company’s executive compensation program and attract, retain and motivate such individuals; and

WHEREAS, the Company has previously amended the Plan and now desires to further amend and restate the Plan effective July 13, 2020.

NOW, THEREFORE, the Plan is hereby amended and restated, effective July 13, 2020, as set forth below:

ARTICLE I

DEFINITIONS

Wherever used herein the following terms shall have the meanings hereinafter set forth:

1.1 “Additional Supplemental Company Account” means the account maintained by the Company for a Participant under the Plan that is credited with Additional Supplemental Company Contributions.

1.2 “Additional Supplemental Company Contribution” means the contribution made by the Company for the benefit of a Participant pursuant to Section 3.7 of the Plan.

1.3 “Affiliated Company” means a business entity, or predecessor of such entity, if any, which controls, is controlled by, or is under common control with, the Company.

1.4 “Base Salary” means the gross amount of salary paid to a Participant by the Company or an Affiliated Company, prior to any deductions thereto.

1.5 “Board” means the Board of Directors of the Company.

1.6 “Bonus” means the gross amount of cash bonus or bonuses paid to a Participant or by the Company or an Affiliated Company, prior to any deductions thereto.

1.7 “Change in Control” means:

(a) With respect to a Pre-2005 Benefit the earliest of:

(i) the time any person (as such term is used in Section 13(d) of the Securities Exchange Act of 1934, as amended (“Exchange Act”)), has acquired

(other than directly from the Company) beneficial ownership (as that term is defined in Rule 13d-3 under the Exchange Act), of more than 20% of the outstanding capital stock of the Company entitled to vote for the election of directors;

(ii) the effective time of (A) a merger or consolidation or other business combination of the Company with one or more other corporations as a result of which the holders of the outstanding voting stock of the Company immediately prior to such business combination hold less than 60% of the voting stock of the surviving or resulting corporation, or (B) a transfer of substantially all of the assets of the Company other than to an entity of which the Company owns at least 80% of the voting stock; or

(iii) the election, over any period of time, to the Board of Directors of the Company without the recommendation or approval of the incumbent Board of Directors of the Company, of the lesser of (A) three directors, or (B) directors constituting a majority of the number of directors of the Company then in office.

(b) With respect to a Post-2004 Benefit, the earliest of:

(i) the time any person (as such term is used in Section 13(d) of the Exchange Act) has acquired (other than directly from the Company) beneficial ownership (as that term is defined in Rule 13(d)-3 under the Exchange Act) of more than 35% of the outstanding capital stock of the Company entitled to vote for the election of directors;

(ii) the effective time of (A) a merger or consolidation or other business combination of the Company with one or more other corporations as a result of which the holders of the outstanding voting stock of the Company immediately prior to such business combination hold less than 60% of the voting stock of the surviving or resulting corporation, or (B) a transfer of substantially all of the assets of the Company, other than to an entity of which the Company owns at least 50% of the voting stock; or

(iii) the election, over any period of time, to the Board of Directors of the Company, without the recommendation or approval of the incumbent Board of Directors of the Company, of directors constituting a majority of the number of directors of the Company then in office.

1.8 “Code” means the Internal Revenue Code of 1986, as amended from time to time, and any regulations relating thereto.

1.9 “Committee” means the committee appointed by the Board to administer the Plan.

1.10 “Company” means AAR CORP., a Delaware corporation, or, to the extent provided in Section 7.9 below, any successor corporation or other entity resulting from a merger or consolidation into or with the Company or a transfer or sale of substantially all of the assets of the Company.

1.11 “Key Employee” means each employee of the Company or an Affiliated Company who may from time to time be designated as such for purposes of the Plan by and in the discretion of the Compensation Committee of the Board.

1.12 “Normal Retirement Date” means the first day of the calendar month coincident with or next following the date a Participant attains age 65.

1.13 “Participant” means any individual who has been designated a Key Employee for purposes of the Plan.

1.14 “Plan” means the AAR CORP. Supplemental Key Employee Retirement Plan.

1.15 “Plan Year” means the calendar year.

1.16 “Post-2004 Benefit” means the portion of a Participant’s Supplemental Accounts that is not a Pre-2005 Benefit.

1.17 “Pre-2005 Benefit” means the portion of a Participant’s Supplemental Accounts determined as of December 31, 2004 to which the Participant would be entitled under the Plan if the Participant’s employment terminated without Cause on December 31, 2004, plus gains and losses attributable to such amount.

1.18 “Qualified Company Account” means the account maintained for a Participant under the Qualified Plan that is credited with Qualified Company Contributions.

1.19 “Qualified Company Contribution” means the Company Contribution made by the Company or an Affiliated Company for the benefit of a Participant under and in accordance with the terms of the Qualified Plan in any Plan Year.

1.20 “Qualified Plan” means the AAR CORP. Retirement Savings Plan, established effective June 1, 1965, and as amended from time to time, and each successor or replacement plan.

1.21 “Qualified Non-Elective Account” means the account maintained for a Participant under the Qualified Plan that is credited with Qualified Non-Elective Contributions.

1.22 “Qualified Non-Elective Contribution” means the non-elective Retirement Benefit Contribution made by the Company or an Affiliated Company for the benefit of a Participant under and in accordance with the terms of the Qualified Plan in any Plan Year.

1.23 “Qualified Performance Account” means the account maintained for a Participant under the Qualified Plan that is credited with Qualified Performance Contributions.

1.24 “Qualified Performance Contribution” means the Performance Contribution made by the Company or an Affiliated Company for the benefit of a Participant under and in accordance with the terms of the Qualified Plan.

1.25 “Qualified Salary Deferral Contribution” means the Salary Deferral Contribution made by the Company or an Affiliated Company for the benefit of a Participant under and in accordance with the terms of the Qualified Plan in any Plan Year.

1.26 “Supplemental Accounts” means, collectively, the Supplemental Deferral Account, the Supplemental Company Account, the Supplemental Performance Account, the Supplemental Non-Elective Account and the Additional Supplemental Company Account maintained by the Company for a Participant under the Plan.

1.27 “Supplemental Base Salary Deferral Agreement” means a written agreement provided by the Committee and entered into by a Participant pursuant to the provisions of Section 3.2.

1.28 “Supplemental Base Salary Deferral Contribution” means the Base Salary contribution made by the Company for the benefit of a Participant pursuant to Section 3.1 of the Plan in any Plan Year.

1.29 “Supplemental Bonus Deferral Agreement” means a written agreement provided by the Committee and entered into by a Participant pursuant to the provisions of Section 3.3.

1.30 “Supplemental Bonus Deferral Contribution” means the Bonus contribution made by the Company for the benefit of a Participant pursuant to Section 3.1 in any Plan Year.

1.31 “Supplemental Company Account” means the account maintained by the Company for a Participant under the Plan that is credited with Supplemental Company Contributions.

1.32 “Supplemental Company Contribution” means the contribution made by the Company for the benefit of a Participant pursuant to Sections 3.4 and 3.5 of the Plan in any Plan Year.

1.33 “Supplemental Contributions” means, collectively, the Supplemental Base Salary Deferral Contribution, the Supplemental Bonus Deferral Contribution, the Supplemental Company Contribution, the Supplemental Performance Contribution, the Supplemental Non-Elective Contribution and the Additional Supplemental Company Contribution.

1.34 “Supplemental Deferral Account” means the account maintained by the Company for a Participant under the Plan that is credited with Supplemental Base Salary Deferral Contributions and Supplemental Bonus Deferral Contributions.

1.35 “Supplemental Non-Elective Account” means the account maintained by the Company for a Participant under the Plan that is credited with Supplemental Non-Elective Contributions.

1.36 “Supplemental Non-Elective Contribution” means the contribution made by the Company for the benefit of a Participant pursuant to Section 3.6 of the Plan in any Plan Year.

1.37 “Supplemental Performance Account” means the account maintained by the Company for a Participant under the Plan that is credited with Supplemental Performance Contributions.

1.38 “Supplemental Performance Contribution” means the contribution made by the Company for the benefit of a Participant pursuant to Section 3.5 of the Plan in any Plan Year.

1.39 “Unforeseeable Emergency” means a severe financial hardship to the Participant resulting from an illness or accident of the Participant, the Participant’s spouse, or a dependent (as defined in Code Section 152(a)) of the Participant, loss of the Participant’s property due to casualty, or other similar extraordinary and unforeseeable circumstances arising as a result of events beyond the control of the Participant.

Except as otherwise provided in this Article I, (a) all capitalized terms used in the Plan that are defined in the Qualified Plan shall have the same meaning in the Plan as is set forth in the definition in the Qualified Plan, (b) words in the masculine gender shall include the feminine and the singular shall include the plural, and vice versa, unless qualified by the context, and (c) any headings used herein are included for ease of reference only and are not to be construed so as to alter the terms hereof.

ARTICLE II

ELIGIBILITY

2.1 Key Employees. Each Key Employee shall be a Participant in the Plan with respect to the Supplemental Contributions as set forth in Article III.

2.2 Participation Determination. The right of any Participant to receive benefits under the Plan, if any, and the amount and conditions under which such benefits shall be payable, shall be determined in accordance with the provisions of the Plan as in effect on the date of the Participant’s termination of employment with the Company and its Affiliated Companies.

ARTICLE III

SUPPLEMENTAL CONTRIBUTIONS

3.1 Supplemental Base Salary and Supplemental Bonus Deferral Contributions.

(a) A Participant may elect to defer a portion of Base Salary and Bonus otherwise payable to him for a Plan Year by authorizing Supplemental Base Salary Deferral Contributions and Supplemental Bonus Deferral Contributions on his behalf. The amount of the Participant’s Supplemental Base Salary Deferral Contributions shall be equal to a designated percentage of Base Salary payable for such Plan Year and the amount of the Participant’s Bonus Deferral Contributions shall be equal to a designated percentage of the Bonus payable to him for the fiscal year beginning in such Plan Year.

(b) In no event shall the aggregate of the Qualified Salary Deferral Contributions, Supplemental Base Salary Deferral Contributions and Supplemental Bonus Deferral Contributions made for any Plan Year exceed 75% of the Participant’s

Compensation for such Plan Year (determined without giving effect to any limitations imposed by the Code on the Qualified Plan).

(c) If during a Plan Year a Participant changes the amount of Qualified Salary Deferral Contributions made on his behalf under the Qualified Plan, and such change results in a decrease to the Participant’s Supplemental Base Salary Deferral Contributions, the resulting decrease in Supplemental Base Salary Deferral Contributions made under this Plan for the Plan Year cannot exceed an amount equal to the limit set forth in Section 402(g)(1) of the Code.

(d) The aggregate Supplemental Base Salary Contributions and Supplemental Bonus Deferral Contributions made for the benefit of a Participant shall be calculated as of each pay period (based on Base Salary and Bonus paid for such pay period) and shall be credited to a Supplemental Deferral Account maintained under the Plan in the name of such Participant at the same time as Qualified Salary Deferral Contributions are made for such Plan Year.

3.2 Supplemental Base Salary Deferral Agreement.

(a) As a condition to the Company’s obligation to make a Supplemental Salary Deferral Contribution for the benefit of a Participant pursuant to Section 3.1, the Participant must execute and deliver to the Committee a Supplemental Salary Deferral Agreement, no later than the December 31^stimmediately preceding the Plan Year for which the Agreement is effective. A Key Employee who becomes a Participant during a Plan Year shall deliver the Supplemental Salary Deferral Agreement to the Committee within 30 days after the date the Participant first becomes eligible to participate, and such Agreement shall be effective with respect to Base Salary related to services to be performed subsequent to the election; provided that such Participant shall not be considered first eligible if, on the date he becomes a Participant, he participates in any other nonqualified account balance plan that is subject to Code Section 409A maintained by the Company or an Affiliated Company. If the individual referred to in the preceding sentence does not deliver a Supplemental Salary Deferral Agreement to the Committee within such 30 day period, he shall be entitled to deliver to the Committee a Supplemental Salary Deferral Agreement with respect to his Base Salary earned from and after the first day of the Plan Year next following the Plan Year in which the Agreement is delivered. Any election made pursuant to a Supplemental Salary Deferral Agreement delivered pursuant to the preceding sentences shall continue in effect until revoked by a Participant by notice delivered to the Committee no later than the last day of the Plan Year immediately preceding the first day of the Plan Year in which such election is to become effective, and as of each December 31 the election shall become irrevocable with respect to Base Salary payable with respect to services performed by the Participant in the immediately following calendar year.

(b) At the time the Participant completes a Supplemental Salary Deferral Agreement, the Participant must designate the time and form of payment of his Supplemental Accounts as described in Section 3.10(d).

3.3 Supplemental Bonus Deferral Agreement. As a condition to the Company’s obligation to make a Supplemental Bonus Deferral Contribution for the benefit of a Participant pursuant to Section 3.1, the Participant must execute a Supplemental Bonus Deferral Agreement. A Supplemental Bonus Deferral Agreement related to a Bonus earned by a Participant during a fiscal year of the Company shall be delivered to the Committee no later than the last day of the preceding fiscal year of the Company and shall continue in effect until revoked by a Participant by notice delivered to the Committee no later than the last day of the fiscal year immediately preceding the first day of the fiscal year for which such election is to become effective, and as of each May 31 the election shall become irrevocable with respect to any Bonus payable with respect to services performed by the Participant in the immediately following calendar year.

3.4 Supplemental Company Contributions. A Participant who has in effect a Supplemental Base Salary Deferral Agreement or Supplemental Bonus Deferral Agreement to defer Base Salary or Bonus during a Plan Year shall be eligible to receive a Supplemental Company Contribution for such Plan Year. The Supplemental Company Contribution shall be equal to an amount resulting from (a) x (b) – (c):

(a) The lesser of (i) the average deferral rate, determined by dividing the sum of the Participant’s Supplemental Base Salary Deferral Contributions, Supplemental Bonus Deferral Contributions and Qualified Salary Deferral Contributions by the sum of the Participant’s Base Salary and Bonus; or (ii) the maximum percentage of Earnings that are eligible for Qualified Company Contributions under Section 5.1(a) of the Qualified Plan multiplied by the sum of the Participant’s Base Salary and Bonus.

(b) The percentage of Qualified Salary Deferral Contributions that are eligible for Qualified Company Contributions as described in Section 5.1(a) of the Qualified Plan.

A Supplemental Company Contribution made for the benefit of a Participant shall be calculated on a pay period basis (based on deferrals made for such pay period and Base Salary and Bonus paid for such pay period) and shall be credited to a Supplemental Company Account maintained under the Plan in the name of such Participant at the same time as Qualified Company Contributions are made for such Plan Year.

As soon as practicable after the end of each Plan Year, the Company shall make an additional Supplemental Company Contribution to the extent necessary so that the Participant’s Supplemental Company Contributions for the Plan Year are not less than the amount that would be credited if the calculation described above were performed as of the end of the Plan Year rather than the end of each pay period.

If the Company suspends making any Qualified Company Contributions under the Qualified Plan, Supplemental Company Contributions under the Plan shall also be suspended to the same extent.

3.5 Supplemental Performance Contributions. A Participant who has in effect a Supplemental Base Salary Deferral Agreement or Supplemental Bonus Deferral Agreement to defer Base Salary or Bonus during a Plan Year shall be eligible to receive a Supplemental Performance Contribution for the Company’s fiscal year ending in such Plan Year. The Supplemental Performance Contribution shall be equal to an amount resulting from (a) – (b):

(a) The Qualified Performance Contribution that would have been allocated to the Qualified Performance Account of the Participant for such fiscal year using a Basic Salary Deferral rate equal to the lesser of (i) the percentage determined by dividing the sum of the Participant’s Supplemental Base Salary Deferral Contributions, Supplemental Bonus Deferral Contributions and Qualified Salary Deferral Contributions by the sum of the Participant’s Base Salary and Bonus or (ii) the maximum percentage of Earnings that are eligible for Qualified Profit Sharing Contributions under Section 5.2(a)(ii)(B) of the Qualified Plan, multiplied by the sum of the Participants Base Salary and Bonus.

(b) The amount of the Qualified Performance Contribution actually allocated to the Qualified Performance Account of the Participant for such fiscal year.

A Supplemental Performance Contribution made for the benefit of a Participant for any fiscal year of the Company shall be credited to a Supplemental Performance Account maintained under the Plan in the name of such Participant at the same time as Qualified Performance Contributions are made for such Plan Year.

Notwithstanding the foregoing provisions of the Section 4.6, effective as of January 1, 2020, (i) any Supplemental Performance Contribution that would otherwise be made for the Fiscal Year ending May 31, 2020 shall be calculated by taking into account a Participant’s employment and Base Salary and Bonus through December 31, 2019, and (ii) no Supplemental Performance Contributions shall be made for any Fiscal Year beginning on or after June 1, 2020.

3.6 Supplemental Non-Elective Contributions. A Participant shall be eligible to receive a Supplemental Non-Elective Contribution for each calendar quarter in a Plan Year. The Supplemental Non-Elective Contribution shall be equal to an amount resulting from (a) – (b):

(a) The Qualified Non-Elective Contribution that would be allocated to the Qualified Non-Elective Account of the Participant for such calendar quarter based on the Participant’s Base Salary and Bonus received in such calendar quarter and after disregarding the annual compensation limit under Section 401(a)(17) of the Internal Revenue Code.

(b) The amount of the Qualified Non-Elective Contribution actually allocated to the Qualified Non-Elective Account of the Participant for such calendar quarter.

If the Company suspends making any Qualified Non-Elective Contributions under the Qualified Plan, Supplemental Non-Elective Contributions under the Plan shall also be suspended to the same extent.

A Supplemental Non-Elective Contribution made for the benefit of a Participant for any calendar quarter shall be credited to a Supplemental Non-Elective Account maintained under the Plan in the name of such Participant at the same time as Qualified Non-Elective Contributions are made for such calendar quarter.

3.7 Additional Supplemental Company Contributions.

(a) The Compensation Committee of the Board may at any time, in its discretion, designate any Participant to receive an Additional Supplemental Company Contribution, which the Compensation Committee may authorize from time to time for a particular Plan Year. The amount of any Additional Supplemental Company Contribution that is to be made for a particular Plan Year shall be determined by the Compensation Committee in its sole discretion based on the following percentages of a Participant’s Base Salary and Bonus:

Participant	Contribution
President and Chief Executive Officer	Up to 12%
Other Participants	Up to 10%

(b) Additional Supplemental Company Contributions made pursuant to this Section 3.5 for a particular Plan Year shall be made prior to the end of such Plan Year based on the Participant’s Base Salary and Bonus payable during such Plan Year; provided that each Participant eligible for an Additional Supplemental Company Contribution hereunder shall only receive an allocation of such Contribution to his Additional Supplemental Company Account with respect to a Plan Year if, and only if such Participant is a regular full-time Employee on the day immediately preceding the date the Contribution is made.

(c) Any Additional Supplemental Company Contributions to be made for the benefit of a Participant shall be credited to an Additional Supplemental Company Account maintained under the Plan under the name of such Participant as and when specified in the Compensation Committee resolution authorizing and directing the Additional Supplemental Company Contributions.

3.8 Vesting in Supplemental Contributions.

(a) A Participant shall vest in his Supplemental Deferral Account, Supplemental Company Account, Supplemental Performance Account and Supplemental Non-Elective Account in accordance with the same vesting provisions that apply to the Qualified Salary Deferral Account, Qualified Company Account, Qualified Performance Account and Qualified Non-Elective Account under the Qualified Plan.

(b) A Participant shall vest in his Additional Supplemental Company Account as follows:

(i) Subject to (b)(ii) below, a Participant shall vest in his Additional Supplemental Company Account according to the vesting schedule described in (A) – (C) below that results in the greatest amount of vested Account balance:

(A) The Participant shall vest in 50% of the balance of his Additional Supplemental Company Account upon the earlier of (I) the date the Participant has 20 Years of Vested Service or (II) the date the Participant’s age (measured in full years) plus Years of Vested Service equals 65.

(B) The Participant shall vest in 75% of the balance of his Additional Supplemental Company Account upon the date the Participant’s age (measured in full years) plus Years of Vested Service equals 70.

(C) The Participant shall vest in 100% of the balance of his Additional Supplemental Company Account on the earlier of (I) the date the Participant attains age 65 or (II) the date the Participant’s age (measured in full years) plus Years of Vested Service equals 75.

(ii) Notwithstanding the provisions of (b)(i) above, on a Change in Control, any unvested portion of the Additional Supplemental Company Account of each Participant who is actively employed by the Company or an Affiliated Company on the date of such Change in Control shall become fully vested and nonforfeitable on such Change in Control.

Any unvested portion of the Participant’s Additional Supplemental Company Account shall be forfeited upon the Participant’s termination of employment with the Company and its Affiliated Companies.

3.9 Investment of Supplemental Accounts.

(a) Investments. Amounts credited hereunder to the Supplemental Accounts of a Participant shall be invested in various investment funds that are made available by the Committee from time to time and as are designated by each Participant pursuant to investment directions given. Such Accounts shall be credited with earnings, gains and losses of the applicable investment funds. Each Participant shall have the right to modify his investment directions with respect to amounts credited to his Supplemental Accounts. A Participant’s investment directions shall be made in accordance with procedures established by the Committee. If a Participant fails to make an investment decision, the Participant’s Supplemental Accounts will be invested in the investment fund designated as the Qualified Default Investment Alternative under the Qualified Plan.

(b) Investment Funds. Any investments made by the Company or by the Trustee of the Trust Agreement referred to in Section 7.2 to conform to directions made by a Participant pursuant to this Section shall be in investment funds maintained in the name of the Company, or in the name of such Trustee, and no Participant shall at any time have any interest in the assets of any such investment fund.

3.10 Distributions.

(a) Termination of Employment Prior to Death. Following a Participant’s termination of employment with the Company and all Affiliated Companies for any reason other than death, a Participant shall receive a distribution of all vested amounts credited to the Participant’s Supplemental Accounts, including gains and losses credited in accordance with Section 3.9.

(b) Distribution Due to Death. Each Participant shall have a right to designate, by giving a written designation to the Committee, a beneficiary or beneficiaries to receive any vested amount remaining to be distributed to such Participant in the event that he dies before distribution of the full amount of his Supplemental Accounts. Successive beneficiary designations may be made, and the last designation received by the Committee prior to the death of the Participant shall be effective and shall revoke all prior designations. If a designated beneficiary shall die before the Participant, his interest shall terminate and, unless otherwise provided in the Participant’s designation, such interest shall be paid in equal shares to those beneficiaries, if any, who survive the Participant. If a Participant has not designated a beneficiary, or if no designated beneficiary is living on the date of distribution hereunder, amounts distributable pursuant to this paragraph shall be distributed to those persons or entities entitled to receive distributions of the Participant’s accounts under the Qualified Plan. Distributions to a beneficiary shall be in the same form and at the same time as elected by the Participant.

(c) Unforeseeable Emergency Distribution. A Participant shall be entitled to request a distribution from his Supplemental Deferral Account, prior to his termination of employment with the Company and all Affiliated Companies, in order to satisfy an Unforeseeable Emergency. Such a distribution may also include amounts necessary to pay federal, state or local income taxes or penalties reasonably anticipated to result from a distribution. Except with respect to eligibility for such a distribution, the procedures for requesting and receiving such a distribution shall satisfy the requirements set forth in the Qualified Plan with respect to a hardship distribution. A request for a distribution pursuant to this paragraph shall be made separate and apart from a request for a distribution under the Qualified Plan, and a request for a hardship distribution under the Qualified Plan shall not automatically be deemed a request for a distribution hereunder.

(d) Time and Form of Payment of Supplemental Accounts.

(i) Except as set forth in (d)(ii) below, payment of the balance of a Participant’s Supplemental Accounts shall be paid or commence to be paid to the Participant on the first day of a calendar month and year elected by the Participant (which shall be no earlier than the first day of the seventh month following the date of the Participant’s termination of employment and no later than 15 years after the date of the Participant’s termination of employment). Such distribution shall be paid or commence to be paid to the Participant in either (i) a single lump sum, or (ii) installments over a number of years (not to exceed 15) payable in monthly, quarterly or annual installments, as elected by the Participant. If a Participant does not make timely elections with respect to the time or form of

payment pursuant to the preceding sentences, payment of the Participant’s Supplemental Accounts shall be made to the Participant in a lump sum on the first day of the seventh month following the Participant’s termination of employment.

(ii) In the case of an individual who was a Participant in the SKERP prior to August 1, 2019, (A) payment of the Participant’s Supplemental Deferral Account and the portion of the Participant’s other Supplemental Accounts not described in (B) below shall be paid as described in (d)(i) above, and (B) payment of the portion of the Supplemental Accounts (other than the Supplemental Deferral Account) that is attributable to (I) Supplemental Company Contributions, Supplemental Performance Contributions, Supplemental Non-Elective Contributions and Additional Supplemental Company Contributions made with respect to Base Salary earned through calendar 2019 and Bonus earned through fiscal 2020 and (II) Bonus Deferral Contributions made with respect to Bonus earned through fiscal 2020 shall be paid to the Participant on the first day of the seventh month following the date of the Participant’s termination of employment with the Company and all Affiliated Companies.

(e) Notwithstanding any provision in the Plan to the contrary:

(i) A Participant may elect a distribution of all or any portion of his Pre-2005 Benefit applicable to the amounts credited to his Supplemental Deferral Account, his Supplemental Company Account, and his Supplemental Profit Sharing Account, including gains and losses credited to the date of distribution in accordance with Section 3.9, to be paid or commence to be paid at any time following his termination of employment if he elects such distribution by written instrument delivered to the Committee prior to the date of his termination of employment. Such distribution shall be made in a method described in Section 3.10(d), as elected by the Participant.

(ii) A Participant may modify his election as to the form or time of distribution of his Post-2004 Benefit applicable to amounts credited to his Supplemental Accounts, and earnings thereon, if (A) such election does not take effect until at least 12 months after the date on which the election is made, (B) the first payment with respect to which such election is made is deferred for a period of not less than five years from the date on which such payment would otherwise have been made, and (C) any election related to a payment to be made at a specified date is made at least 12 months prior to the date of the first scheduled payment. Any such election shall apply to the entire portion of the Post-2004 Benefit that is not subject to an election previously made pursuant to this Section 3.10(e).

(iii) A Participant may change an election with respect to the time and form of payment of such portion of his Post-2004 Benefit, without regard to the restrictions imposed under the preceding paragraph (ii) on or before December 31, 2006; provided that such election (A) applies only to amounts that would not

otherwise be payable in calendar year 2006, and (B) shall not cause an amount to be paid in calendar year 2006 that would not otherwise be payable in such year.

(f) Notwithstanding any provision in the Plan to the contrary, in the event of a potential Change in Control of the Company, as determined solely by the Board in its discretion, the portion of the Pre-2005 Benefit applicable to all amounts credited to each Participant’s Supplemental Salary Account, his Supplemental Company Account, and his Supplemental Profit Sharing Account, including gains and losses credited to the date of distribution in accordance with Section 3.9, shall be distributed to him in a lump sum as soon as practicable following the date of such determination by the Board.

ARTICLE IV

FORFEITURES

4.1 Forfeiture of Additional Supplemental Contribution Account. Notwithstanding any other provisions of the Plan, including the provisions of Sections 3.8(b)(ii) and 6.3, (a) if the employment of a Participant with the Company and all Affiliated Companies terminates due to Cause, or (b) if a Participant during his employment with the Company and all Affiliated Companies or at any time during the one-year period after the termination of such employment violates the covenant not to compete with the Company and its Affiliated Companies set forth in Section 4.3, all rights of the Participant to the Participant’s Additional Supplemental Contribution Account (including the vested and unvested portions) shall be forfeited and shall be retained by the Company free of any and all claims of the Participant or any other person claiming with respect to the Participant.

4.2 Termination For Cause. For purposes of this Section, a termination for Cause shall mean termination of a Participant’s employment by the Company or any Affiliated Company because of the Participant’s final, non-appealable conviction of a felony that involves bribery or embezzlement or fraud against the Company.

4.3 Covenant Not to Compete. A Participant shall not, during the term of the Participant’s employment with the Company and all Affiliated Companies, and for a period of one year thereafter, without the Company’s express written consent, directly or indirectly, alone or as a member of a partnership, group, or joint stock venture, or as an employee, officer, director or stockholder of any corporation, or in any capacity (a) engage in any activity that is competitive with any of the businesses conducted by the Company or its Affiliated Companies at the time of the Participant’s termination of employment, provided that the foregoing provision shall not be deemed to prohibit the Participant from purchasing for investment any securities or interest in any publicly-owned organization that is competitive with the business of the Company and its Affiliated Companies, so long as the Participant’s investment in such organization does not exceed the lesser of one percent of its total outstanding equity securities or $250,000; (b) solicit in connection with any activity that is competitive with any of the businesses of the Company and its Affiliated Companies at the time of the Participant’s termination of employment, any then current customers or suppliers of the Company and its Affiliated Companies; (c) use the name “AAR” or any variant thereof; or (d) actively solicit, directly or indirectly, any employee or induce any then current customer or supplier of the Company or any

of its Affiliated Companies to terminate or materially change the employee’s, customer’s or supplier’s relationship with the Company or any Affiliated Company.

4.4 Exception. In the event of a Participant’s termination of employment with the Company under circumstances that trigger Change in Control employment termination benefits under the change in control provisions of an employment agreement or severance and change in control agreement between the Participant and the Company, the provisions of subsections 4.1, 4.2 and 4.3 above shall be deemed waived by the Company and null and void.

ARTICLE V

ADMINISTRATION OF THE PLAN

5.1 Administration by the Committee. The Committee shall be responsible for the general operation and administration of the Plan and for carrying out the provisions thereof.

5.2 General Powers of Administration. All provisions set forth in the Qualified Plan with respect to the administrative powers and duties of the Committee, expenses of administration, and procedures for filing claims, shall also be applicable with respect to the Plan. The Committee shall be entitled to rely conclusively upon all tables, valuations, certificates, opinions and reports furnished by any actuary, accountant, controller, counsel or other person employed or engaged by the Committee with respect to the Plan.

ARTICLE VI

AMENDMENT OR TERMINATION

6.1 Amendment or Termination. The Company intends the Plan to be permanent but reserves the right to amend or terminate the Plan when, in the sole opinion of the Company, such amendment or termination is advisable. Any such amendment or termination shall be made pursuant to a resolution of the Board and shall be effective as of the date of such resolution or such later date as the resolution may expressly state.

6.2 Effect of Amendment or Termination.

(a) No amendment or termination of the Plan shall directly or indirectly reduce the balance of any Supplemental Account held hereunder as of the effective date of such amendment or termination.

(b) Upon termination of the Plan, distribution of amounts in the Supplemental Accounts shall be made to Participants or beneficiaries as soon as administratively feasible following the date of Plan termination, and in accordance with regulations issued under Code Section 409A. If the Plan is terminated in connection with a Change in Control, then immediately prior to such Change in Control, the Supplemental Account of each Participant who is then employed by the Company or an Affiliated Company shall be credited with a pro rata portion of the Supplemental Additional Company Contribution, Supplemental Profit Sharing Contribution and Supplemental Retirement Benefit Contribution made on behalf of the Participant for the immediately preceding Plan Year, with such pro rata amount to be determined by multiplying the entire amount of such Supplemental Contributions for the prior Plan Year by a fraction, the numerator

of which is the number of full months that have elapsed in the Plan Year in which the Plan is terminated as of the date of such termination and the denominator of which is 12. Except as set forth in the immediately preceding sentence, no additional credits of Supplemental Contributions shall be made to the accounts of Participants after termination of the Plan, but the Company shall continue to credit gains and losses to accounts pursuant to Section 3.9 until the balances of the Supplemental Accounts have been fully distributed to Participants or their beneficiaries.

6.3 Effect of a Change in Control. Notwithstanding Sections 6.1 and 6.2 above, in the event of a Change in Control, (a) the unvested portion of the Supplemental Account of each Participant who is then employed by the Company or an Affiliated Company shall become fully vested and nonforfeitable, (b) the Plan shall continue in effect as to any Participant who is a Participant immediately prior to a Change in Control, and (c) no amendment to or termination of the Plan shall be effective as to any such Participant to the extent the effect of such amendment or termination would be to reduce such Participant benefits or rights under the Plan from those accrued by such Participant under the Plan immediately prior to any such amendment or termination.

6.4 Termination of Participation. The Company, in its sole discretion, shall have the right to terminate the participation in the Plan or any portion thereof of any Participant. Upon such termination of participation, distribution of the amounts in the Supplemental Accounts, as applicable, to such Participant, determined as of the date of termination of participation, shall be made to such Participant or beneficiaries either (a) in the manner and at the time described in Article III of the Plan, or (b) in the sole discretion of the Company, only with respect to the part of the Pre-2005 Benefit applicable to such Accounts, in a lump sum payment as soon as practicable following such termination of participation. No additional credits of Supplemental Contributions shall be made to the Supplemental Accounts of such Participant after termination of his participation in the Plan with respect to such benefits, but the Participant shall continue to vest in his Supplemental Accounts pursuant to Section 3.8, and the Company shall continue to credit earnings, gains and losses to existing Supplemental Accounts of such Participant pursuant to Section 3.9 until the balances of such Supplemental Accounts have been fully distributed to the Participant or his beneficiaries.

ARTICLE VII

GENERAL PROVISIONS

7.1 Participants’ Rights Unsecured. Except as set forth in Section 7.2, the Plan at all times shall be entirely unfunded and no provision shall at any time be made with respect to segregating any assets of the Company or an Affiliated Company for payment of any benefits hereunder. The right of a Participant or beneficiary to receive a benefit hereunder shall be an unsecured claim against the general assets of the Company, and neither the Participant nor beneficiary shall have any rights in or against any specific assets of the Company or any Affiliated Company. All amounts credited to the Supplemental Accounts of Participants shall constitute general assets of the Company.

7.2 Trust Agreement. Notwithstanding the provisions of Section 7.1:

(a) The Company has entered into an irrevocable trust agreement (“Trust Agreement”) with a bank or trust company (with a combined capital and surplus in excess of $100 million dollars), located in the Continental United States, as trustee, which agreement is substantially in the form of the model trust agreement set forth in Internal Revenue Service Revenue Procedure 92-64, or any subsequent Internal Revenue Service Revenue Procedure, and includes provisions required in such model trust agreement that all assets of the Trust shall be subject to the creditors of the Company in the event of insolvency.

(b) The Company shall make contributions to the Trust for the purpose of accumulating assets sufficient to fully fund Participants’ vested and unvested Supplemental Accounts. The Trust Agreement shall include such provisions as are applicable with respect to the investment and reinvestment of Supplemental Contributions and Supplemental Accounts pursuant to directions given by Participants to the Company and transmitted by the Company to the Trustee pursuant to subsection 3.9(f).

7.3 General Conditions. Except as otherwise expressly provided in the Plan, (a) all terms and conditions of the Qualified Plan applicable to a Qualified Salary Deferral Contribution, a Qualified Company Contribution, Qualified Non-Elective Contribution or a Qualified Performance Contribution, including the vesting provisions, shall also be applicable to the respective Supplemental Salary Deferral Contribution, Supplemental Company Contribution, Supplemental Non-Elective Contribution, and Supplemental Performance Contribution to be made hereunder, and (b) the Additional Supplemental Company Contribution shall be subject to the same terms and conditions of the Qualified Plan as is the Supplemental Company Contribution.

7.4 No Guaranty of Benefits. Nothing contained in the Plan shall constitute a guaranty by the Company, any Affiliated Company, or any other person or entity that the assets of the Company or any Affiliated Company will be sufficient to pay any benefit hereunder. No Participant or beneficiary shall have any right to receive a benefit or a distribution of contributions under the Plan except in accordance with the terms of the Plan.

7.5 No Enlargement of Employee Rights. Establishment of the Plan shall not be construed to give any Participant the right to be retained in the service of the Company or any Affiliated Company.

7.6 Spendthrift Provision. No interest of any person or entity in, or right to receive a distribution under, the Plan shall be subject in any manner to sale, transfer, assignment, pledge, attachment, garnishment, or other alienation or encumbrance of any kind; nor may such interest or right to receive a distribution be taken, either voluntarily or involuntarily for the satisfaction of the debts of, or other obligations or claims against, such person or entity, including claims for alimony, support, separate maintenance and claims in bankruptcy proceedings.

7.7 Applicable Law. The Plan shall be construed and administered under the laws of the State of Illinois, except to the extent preempted by federal law.

7.8 Incapacity of Recipient. If any person entitled to a payment under the Plan is deemed by the Company to be incapable of personally receiving and giving a valid receipt for such payment, then, unless and until claim therefor shall have been made by a duly appointed guardian or other legal representative of such person, the Company may provide for such payment or any part thereof to be made to any other person or institution then contributing toward or providing for the care and maintenance of such person. Any such payment shall be a payment for the account of such person and a complete discharge of any liability of the Company and the Plan therefor.

7.9 Corporate Successors. The Plan shall be continued, following a transfer or sale of assets of the Company, or following the merger or consolidation of the Company into or with any other corporation or entity, by the transferee, purchaser or successor entity, unless the Plan has been terminated by the Company pursuant to the provisions of Article VI prior to the effective date of such transaction.

7.10 Unclaimed Benefit. Each Participant or beneficiary shall keep the Company informed of his current address. The Company shall not be obligated to search for the whereabouts of any person. If the location of a Participant is not made known to the Company within three years after the date on which payment of the Participant’s benefits under the Plan may first be made, payment may be made as though the Participant had died at the end of the three-year period. If, within one additional year after such three-year period has elapsed, or within three years after the actual death of a Participant, the Company is unable to locate any beneficiary of the Participant, then the Company shall have no further obligation to pay any benefit hereunder to such Participant or beneficiary or any other person and such benefit shall be irrevocably forfeited.

7.11 Disputed Benefits; Limitations on Liability. If there is a dispute as to whether a Participant (or the Participant’s beneficiary) is due a benefit under Article III of the Plan, and the Participant prevails in the dispute, the Company shall reimburse the Participant for all reasonable expenses, including legal fees, incurred by the Participant in connection with such dispute. Such reimbursement shall be made within 30 days of the Participant’s submission of an invoice following resolution of the dispute. If not already included, the Company shall pay interest on any deferred payment of Plan benefits to the Participant, based on the 10-year Treasury bond rate in effect on the date the dispute is resolved, from the date that payment(s) of Plan benefits should have been made or commenced. Subject to the preceding sentence, none of the Company, any Affiliated Company, any member of the Committee, nor any individual acting as an employee or agent of the Company, any Affiliated Company or the Committee, shall be liable to any Participant or any other beneficiary or other person for any claim, loss, liability or expense incurred by such Participant or other beneficiary or other person in connection with the Plan.

7.12 Tax Savings. Notwithstanding anything to the contrary contained in the Plan, (a) if the Internal Revenue Service prevails in a claim by it that amounts credited to a Participant’s Supplemental Accounts, and/or earnings thereon, constitute taxable income to the Participant or his beneficiary for any taxable year of his prior to the taxable year in which such credits and/or earnings are distributed to him or (b) legal counsel satisfactory to the Company and the applicable Participant or his beneficiary renders an opinion that the Internal Revenue Service would likely prevail in such a claim, (i) the balance of such Participant’s Supplemental

Accounts that are part of his Pre-2005 Benefit, to the extent constituting taxable income, and (ii) the balance of such Participants Supplemental Accounts that are part of his Post-2004 Benefit, to the extent constituting taxable income pursuant to Code Section 409A and guidance and regulations thereunder, shall be immediately distributed to the Participant or his beneficiary. For purposes of this paragraph, the Internal Revenue Service shall be deemed to have prevailed in a claim if such claim is upheld by_. a court of final jurisdiction, or if the Company, or a Participant or beneficiary, based upon an opinion of legal counsel satisfactory to the Company and the Participant or his beneficiary, fails to appeal a decision of the Internal Revenue Service, or a court of applicable jurisdiction, with respect to such claim, to an appropriate Internal Revenue Service appeals authority or to a court of higher jurisdiction, within the appropriate time period.