Document:

EX-10.1

 EXHIBIT 10.1 

ENGILITY HOLDINGS, INC. 

SECOND AMENDED AND RESTATED 

2012 LONG TERM PERFORMANCE PLAN 

TABLE OF CONTENTS 
  

							
	 	 	 	  	PAGE	 
	 SECTION 1.
	 	Purpose.	  	 	1	  
	 SECTION 2.
	 	Definitions; Rules of Construction.	  	 	1	  
	 SECTION 3.
	 	Eligibility.	  	 	3	  
	 SECTION 4.
	 	Awards.	  	 	3	  
	 SECTION 5.
	 	Shares of Stock Available Under Plan.	  	 	5	  
	 SECTION 6.
	 	Award Agreements.	  	 	7	  
	 SECTION 7.
	 	Adjustments; Change in Control; Acquisitions.	  	 	8	  
	 SECTION 8.
	 	Administration.	  	 	10	  
	 SECTION 9.
	 	Amendment and Termination of this Plan.	  	 	12	  
	 SECTION 10.
	 	Miscellaneous.	  	 	12	  

 ENGILITY HOLDINGS, INC. 

SECOND AMENDED AND RESTATED 

2012 LONG TERM PERFORMANCE PLAN 
 SECTION
1. Purpose. 
 The purpose of this Engility Holdings, Inc. Second Amended and Restated 2012 Long Term Performance Plan (the “Plan”) is to benefit
the Corporation’s stockholders by encouraging high levels of performance by individuals who contribute to the success of the Corporation and its Subsidiaries and to enable the Corporation and its Subsidiaries to attract, motivate, retain and
reward talented and experienced individuals. This purpose is to be accomplished by providing eligible individuals with an opportunity to obtain or increase a proprietary interest in the Corporation and/or by providing eligible individuals with
additional incentives to join or remain with the Corporation and its Subsidiaries. 
 SECTION 2. Definitions; Rules of Construction. 

(a) Defined Terms. The terms defined in this Section shall have the following meanings for purposes of this Plan: 

“Award” means an award granted pursuant to Section 4. 

“Award Agreement” means an agreement described in Section 6 by the Corporation for the benefit of a Participant, setting forth
(or incorporating by reference) the terms and conditions of an Award granted to a Participant. 
 “Beneficiary” means a person or
persons (including a trust or trusts) validly designated by a Participant or, in the absence of a valid designation, entitled by will or the laws of descent and distribution, to receive the benefits specified in the Award Agreement and under this
Plan in the event of a Participant’s death. 
 “Board of Directors” or “Board” means the Board of Directors of the
Corporation. 
 “Change in Control” means change in control as defined in Section 7(c). 

“Code” means the Internal Revenue Code of 1986, as amended from time to time. 

“Committee” means the Committee described in Section 8(a), or the Board if the Board takes an action in place of such
Committee. 
 “Corporation” means Engility Holdings, Inc. 

“Director” means a member of the Board of Directors of the Corporation. 

“Employee” means any person, including an officer (whether or not also a director) in the regular full-time employment of the
Corporation or any of its Subsidiaries who, in the opinion of the Committee is, or is expected to be, primarily responsible for the management, growth or protection of some part or all of the business of the Corporation or any of its Subsidiaries,
but excludes, in the case of an Incentive Stock Option, an Employee of any Subsidiary that is not a “subsidiary corporation” of the Corporation as defined in Code Section 424(f). 

“Exchange Act” means the Securities Exchange Act of 1934, as amended from time to time. 

“Executive Officer” means executive officer as defined in Rule 3b-7 under the Exchange Act. If the Board has designated the
executive officers of the Corporation for purposes of reporting under the Exchange Act, the designation shall be conclusive for purposes of this Plan. 

“Fair Market Value” means the closing price of the relevant security as reported on the composite tape of New York Stock Exchange
issues (or if, at the date of determination, the security is not so listed or if the principal market on which it is traded is not the New York Stock Exchange, such other reporting system as shall be selected by the Committee) on the relevant date,
or, if no sale of the security is reported for that date, the next preceding day for which there is a reported sale. The Committee shall determine the Fair Market Value of any security that is not publicly traded, using criteria as it shall
determine, in its sole direction, to be appropriate for the valuation. 

 “First Quarter” shall mean the period of calendar days during a given Performance
Period that is equal to the lesser of (i) 25% of the full number of calendar days falling within such Performance Period or (ii) 90 days. 

“Insider” means any person who is subject to Section 16(b) of the Exchange Act. 

“Minimum Ownership Stock” means any Award of shares of Stock of the Corporation that are issued, in accordance with
Section 4(a)(5), in lieu of cash compensation in order to satisfy applicable stock ownership guidelines from time to time in effect. 

“Non-Employee Director” means a Director who is not an Employee. 

“Option” means a Nonqualified Stock Option or an Incentive Stock Option as described in Section 4(a)(1) or (2). 

“Participant” means a person who is granted an Award, pursuant to this Plan, that remains outstanding. 

“Performance-Based Awards” is defined in Section 4(b). 

“Performance Goals” means one or more of the following criteria or any combination thereof, as determined by the Committee:
(i) consolidated income before or after taxes (including income before interest, taxes, depreciation and amortization); (ii) EBT, EBIT or EBITDA; (iii) operating income or operating margin; (iv) net income; (v) net income or
earnings per share of Stock; (vi) book value per share of Stock; (vii) return on equity or assets; (viii) expense management (including without limitation, total general and administrative expense percentages); (ix) return on
investment or on invested capital; (x) improvements in capital structure; (xi) profitability of an identifiable business unit or product; (xii) maintenance or improvement of profit margins; (xiii) stock price; (xiv) market
share; (xv) revenue or sales (including, without limitation, net loans charged off, average finance receivables and days sales outstanding); (xvi) costs (including, without limitation, total general and administrative expense percentage);
(xvii) cash flow or net funds provided (including cash flow yield or cash flow per share); (xviii) working capital; (xix) total debt (including, without limitation, total debt as a multiple of EBIT or EBITDA), (xx) new business,
recompete business and/or related win rates or business development targets; (xxi) orders or funded backlog, or book-to-bill ratios, and (xxi) total stockholder return. The foregoing criteria may relate to the Corporation, one or more of
its Subsidiaries, one or more of their respective divisions or business units, or any combination of the foregoing, and may be applied on an absolute basis and/or be relative to one or more peer group companies or indices, or any combination
thereof, and may be determined in accordance with GAAP or a non-GAAP or adjusted GAAP basis, all as the Committee shall determine. 

“Performance Period” means, with respect to any Performance Goal, the time period established by the Committee for the achievement
of the performance targets in respect thereof. 
 “Restatement Effective Date” is defined in Section 10(c). 

“Rule 16b-3” means Rule 16b-3 under Section 16 of the Exchange Act, as amended from time to time. 

“Share Units” means the number of units under an Award (or portion thereof) that is payable solely in cash or is actually paid in
cash, determined by reference to the number of shares of Stock by which the Award (or portion thereof) is measured. 
 “Stock”
means shares of Common Stock of the Corporation, par value $0.01 per share, subject to adjustments made under Section 7 or by operation of law. 

“Subsidiary” means, as to any person, any corporation, association, partnership, joint venture or other business entity of which 50%
or more of the voting stock or other equity interests (in the case of entities other than corporations), is owned or controlled (directly or indirectly) by that entity, or by one or more of the Subsidiaries of that entity, or by a combination
thereof. 

  
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 (b) Rules of Construction. For purposes of this Plan and the Award Agreements, unless otherwise expressly
provided or the context otherwise requires, the terms defined in this Plan include the plural and the singular, and pronouns of either gender or neuter shall include, as appropriate, the other pronoun forms. 

SECTION 3. Eligibility. 
 Any one or more Awards may be granted
to any Employee, Director or any other non-Employee who provides services to or on behalf of the Corporation or any of its Subsidiaries, who is designated by the Committee to receive an Award. 

SECTION 4. Awards. 
 (a) Type of Awards. The Committee may from
time to time grant any of the following types of Awards, either singly, in tandem or in combination with other Awards: 
 (1) Nonqualified
Stock Options. A Nonqualified Stock Option is an Award in the form of an option to purchase Stock that is not intended to comply with the requirements of Code Section 422. Except with respect to Substitute Awards described in Section 7(d),
the exercise price of each Nonqualified Stock Option granted under this Plan shall not be less than the Fair Market Value of the Stock on the date that the Option is granted. 

(2) Incentive Stock Options. An Incentive Stock Option is an Award in the form of an option to purchase Stock that is intended to comply with
the requirements of Code Section 422 or any successor section thereof. The exercise price of each Incentive Stock Option granted under this Plan shall not be less than the Fair Market Value of the Stock on the date the Option is granted. If a
Participant on the date an Incentive Stock Option is granted owns, directly or indirectly within the meaning of Code Section 424(d), stock possessing more than ten percent (10%) of the total combined voting power of all classes of stock of
the Corporation, the exercise price per share of the Incentive Stock Option shall not be less than one hundred and ten percent (110%) of the Fair Market Value per share of the Stock at the time of grant, and such Incentive Stock Option shall
not be exercisable after the expiration of five (5) years from the date such Incentive Stock Option is granted. To the extent that the aggregate Fair Market Value of Stock with respect to which one or more incentive stock options first become
exercisable by a Participant in any calendar year exceeds $100,000, taking into account both Stock subject to Incentive Stock Options under this Plan and stock subject to incentive stock options under all other plans of the Corporation or of other
entities referenced in Code Section 422(d)(1), the options shall be treated as Nonqualified Stock Options. For this purpose, the Fair Market Value of the Stock subject to options shall be determined as of the date the Options were granted. 

(3) Stock Appreciation Rights. A Stock Appreciation Right is an Award in the form of a right to receive, upon surrender of the right, but
without other payment, an amount based on the appreciation in the value of the Stock or the Option over a base price established in the Award, payable in cash, Stock or such other form or combination of forms of payout, at times and upon conditions
(which may include a Change in Control), as may be approved by the Committee. Except with respect to Substitute Awards described in Section 7(d), the minimum base price of a Stock Appreciation Right granted under this Plan shall not be less
than the Fair Market Value of the underlying Stock on the date the Stock Appreciation Right is granted. 
 (4) Restricted Stock. Restricted
Stock is an Award of issued shares of Stock of the Corporation (other than Minimum Ownership Stock) that are subject to restrictions on transfer and/or such other restrictions on incidents of ownership as the Committee may determine. 

(5) Restricted Stock Units. A Restricted Stock Unit means rights granted to a Participant under Section 4(a) representing a number of
hypothetical shares of Stock. Each Restricted Stock Unit shall represent the right of a Grantee to receive a payment upon vesting of the Restricted Stock Unit or on any later date specified by the Committee equal to the Fair Market Value of a share
of Stock as of the date the Restricted Stock Unit was granted, the vesting date or such other date as determined by the Committee at the time the Restricted Stock Unit was granted. The Committee may, at the time a Restricted Stock Unit is granted,
provide a limitation on the amount payable in respect of each Restricted Stock Unit. The Committee may provide for the settlement of Restricted Stock Units in cash or with Stock having a Fair Market Value equal to the payment to which the
Participant has become entitled. 

  
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 (6) Other Share-Based Awards. The Committee may from time to time grant Awards under this Plan
that provide the Participants with Stock or the right to purchase or receive Stock, or provide other incentive Awards (including, but not limited to, Minimum Ownership Stock, Share Units, phantom stock or units, performance stock or units, bonus
stock, dividend equivalent units, or similar securities or rights) that have a value derived from the value of, or an exercise or conversion privilege at a price related to, or that are otherwise payable in shares of Stock. The Awards shall be in a
form determined by the Committee, provided that the Awards shall not be inconsistent with the other express terms of this Plan applicable to such Awards. 

(b) Special Performance-Based Awards. Without limiting the generality of the foregoing, Awards denominated in cash or any of the type of Awards listed in
Section 4(a) may be granted as awards that satisfy the requirements for “performance-based compensation” within the meaning of Code Section 162(m) (“Performance-Based Awards”), the grant, vesting, exercisability or
payment of which may depend on the degree of achievement of the Performance Goals relative to preestablished targeted levels for the Corporation or any of its Subsidiaries, divisions or other business units. Performance-Based Awards shall be subject
to the requirements of clauses (1) through (7) below, except that notwithstanding anything contained in this Section 4(b) to the contrary, any Option or Stock Appreciation Right intended to qualify as a Performance-Based Award shall
not be subject to the requirements of clauses (2), (4), (5) and (6) below (with such Awards hereinafter referred to as a “Qualifying Option” or a “Qualifying Stock Appreciation Right”, respectively). An Award that is
intended to satisfy the requirements of this Section 4(b) shall be designated as a Performance-Based Award at the time of grant. 
 (1)
Eligible Class. The eligible class of persons for Awards under this Section 4(b) shall be all Employees. 
 (2) Performance Goals. The
performance goals for any Awards under this Section 4(b) (other than Qualifying Options and Qualifying Stock Appreciation Rights) shall be, on an absolute or relative basis, one or more of the Performance Goals. The Committee shall establish
the Performance Goals and the Performance Periods for which they must be satisfied in order for a Participant to receive any portion of the Award. The specific performance target(s) with respect to Performance Goal(s) must be established by the
Committee no later than the last day of the First Quarter of a given Performance Period (or such other date as may be required or permitted under Section 162(m) of the Code) and while the performance relating to the Performance Goal(s) remains
substantially uncertain. The Committee may establish different performance objectives for each Performance Period, and may provide for multiple, overlapping Performance Periods hereunder. The Committee may provide, at the time when performance
objectives are established with respect to a Performance Period (or at such later date as may be permitted under Section 162(m) of the Code), for the adjustment of such performance objectives as it deems equitable in recognition of unusual or
infrequently occurring events affecting the Corporation, gain or loss on a disposal of a business segment, changes in applicable tax laws or accounting principles, or such other factors as the Committee may determine to be appropriate. 

(3) Individual Limits. The maximum number of shares of Stock subject to all Qualifying Options and Qualifying Stock Appreciation Rights
granted during a calendar year to any Employee shall be 700,000, and the maximum number of shares of Stock or Share Units that are subject to other Performance-Based Awards granted during a calendar year to an Employee shall be 700,000, in each case
subject to adjustment as provided in Section 7. The maximum cash value of all Performance-Based Awards whose value is not determined by reference to shares of Stock that may be granted under the Plan in any calendar year is $5,000,000. Awards
that are cancelled during the year shall be counted against these limits to the extent required by Code Section 162(m). 

  
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 (4) Committee Certification. Before any Performance-Based Award under this Section 4(b)
(other than Qualifying Options and Qualifying Stock Appreciation Rights) is paid, the Committee must certify in writing (by resolution or otherwise) that the applicable Performance Goal(s) and any other material terms of the Performance-Based Award
were satisfied; provided, however, that a Performance-Based Award may be paid without regard to the satisfaction of the applicable Performance Goal in the event of the Participant’s death or permanent disability or in the event of a Change in
Control as provided in Section 7(b). 
 (5) Terms and Conditions of Awards; Committee Discretion to Reduce Performance Awards. The
Committee shall have discretion to determine the conditions, restrictions or other limitations, in accordance with the terms of this Plan and Code Section 162(m), on the payment of individual Performance-Based Awards under this
Section 4(b). The Committee may reserve the right to reduce the amount payable in accordance with any standards or on any other basis (including the Committee’s discretion), as the Committee may impose. 

(6) Interpretation. Except as specifically provided in this Section 4(b), the provisions of this Section 4(b) shall be interpreted
and administered by the Committee in a manner consistent with the requirements for exemption of Performance-Based Awards granted to Executive Officers as “performance-based compensation” under Code Section 162(m) and regulations and
other interpretations issued by the Internal Revenue Service thereunder. 
 (c) Non-Employee Directors. The Board may provide that all or a portion of a
Non-Employee Director’s annual retainer, meeting fees and/or other awards or compensation as determined by the Board, be payable (either automatically or at the election of a Non-Employee Director) in the form of Non-Qualified Stock Options,
Stock Appreciation Rights, Restricted Stock or Other Share-Based Awards, including unrestricted Stock and Share Units. The Board shall determine the terms and conditions of any such Awards, including the terms and conditions which shall apply upon a
termination of the Non-Employee Director’s service as a member of the Board, and shall have full power and authority in its discretion to administer such Awards, subject to the terms of the Plan and applicable law. 

SECTION 5. Shares of Stock Available Under Plan. 
 (a) Aggregate
Limits on Shares. (i) Subject to adjustment as provided in Section 5(b), Section 5(c) or Section 7, the maximum number of shares of Stock that may be granted pursuant to all Awards under the Plan after the Restatement Effective
Date is 4,000,000, minus any shares of Stock subject to Awards granted after May 1, 2016 under the Plan (the “Share Reserve”); and (ii) the maximum number of shares of Stock that may be issued pursuant to all Awards of Incentive
Stock Options is 4,000,000. 
 (b) Share Usage for Full Value Awards. Solely for purposes of calculating the number of shares of Stock available for Award
grants pursuant to Section 5(a)(i), each share of Stock subject to Awards granted pursuant to the Plan shall be counted as one and sixty eight one-hundredths (1.68) shares, other than Awards of Options and Stock Appreciation Rights which
shall continue to be counted as one (1) share. 
 (c) Addbacks of Shares. Any unexercised, unconverted or undistributed portion of any expired,
cancelled, terminated or forfeited Award shall again be available for grants of Awards under Section 5(a), whether or not the Participant has received benefits of ownership (such as dividends or dividend equivalents or voting rights) during the
period in which the Participant’s ownership was restricted or otherwise not vested. To the extent an Award is settled in cash in lieu of issuing shares of Stock subject thereto, the number of shares of Stock subject to such an Award (or portion
thereof) may again be available for grants of Awards under the Plan. In the event that withholding tax liabilities arising from an Award other than an Option or Stock Appreciation Right are satisfied by the tendering of shares (either actually or by
attestation) or by the withholding of shares by the Corporation, the shares so tendered or withheld shall again be available for grants of Awards under the Plan. The foregoing provisions of this Section 5(c) shall be added back on the basis set
forth in Section 5(d) below. For the avoidance of doubt, the following shares of Stock shall not become available for Awards under the Plan: (1) shares tendered by Participants or withheld by the Corporation as full or partial payment to
the Corporation upon exercise of Options or other Awards granted under the Plan; (2) shares of Stock reserved for issuance upon the grant of Stock Appreciation Rights, to the extent the number of reserved shares exceeds the number of shares
actually issued upon exercise of the Stock Appreciation Rights under the Plan; (3) shares withheld by, or otherwise remitted to, the Corporation to satisfy a Participant’s tax withholding obligations upon the exercise of Options or Stock
Appreciation Rights under the Plan; and (4) shares of Stock reacquired by the Corporation on the open market or otherwise using cash proceeds from the exercise of Options under the Plan. 

  
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 (d) Any shares of Stock that again become available for grant pursuant to Section 5(c) shall be added back
as (i) one (1) share for every one (1) share subject to Options or Stock Appreciation Rights granted under the Plan, and (ii) as 1.68 shares for every one (1) share subject to Awards other than Options or Stock Appreciation
Rights granted under the Plan. 
 (e) Treasury Shares; No Fractional Shares. The Stock which may be issued (which term includes Stock reissued or otherwise
delivered) pursuant to an Award under this Plan may be treasury or authorized but unissued Stock or Stock acquired, subsequently or in anticipation of a transaction under this Plan, in the open market or in privately negotiated transactions to
satisfy the requirements of this Plan. No fractional shares shall be issued but fractional interests may be accumulated and any such accumulated fractional interests shall be rounded down to the nearest whole share. 

(f) Consideration. The Stock issued under this Plan may be issued (subject to Section 10(d)) for any lawful form of consideration, the value of which
equals the par value of the Stock or such greater or lesser value as the Committee, consistent with Sections 10(d) and 4(a)(1), (2) and (3), may require. 

(g) Purchase or Exercise Price; Withholding. The exercise or purchase price (if any) of the Stock issuable pursuant to any Award and any withholding
obligation under applicable tax laws shall be paid at or prior to the time of the delivery of such Stock in cash or, subject to the Committee’s express authorization and the restrictions, conditions and procedures as the Committee may impose,
any one or combination of (i) cash, (ii) the delivery of shares of Stock, or (iii) a reduction in the amount of Stock or other amounts otherwise issuable or payable pursuant to such Award. In the case of a payment by the means
described in clause (ii) or (iii) above, the Stock to be so delivered or offset shall be determined by reference to the Fair Market Value of the Stock on the date as of which the payment or offset is made, and any shares of Stock so
tendered or withheld for taxes will be at the minimum statutory rate, or if permitted by the Corporation, such other rate as will not cause adverse accounting consequences and is permitted under applicable withholding rules. 

(h) Cashless Exercise. The Committee may also permit the exercise of the Award and payment of any applicable withholding tax in respect of an Award by
delivery of written notice, subject to the Corporation’s receipt of a third party payment in full in cash (or in such other form as permitted under Section 5(f)) for the exercise price and the applicable withholding at or prior to the time
of issuance of Stock, in the manner and subject to the procedures as may be established by the Committee. 
 (i) Limitations on Director Grants.
Notwithstanding anything herein to the contrary, the aggregate value of all compensation paid or granted, as applicable, to any individual for service as a Non-Employee Director with respect to any calendar year, including equity Awards granted and
cash fees paid by the Corporation to such Non-Employee Director, shall not exceed five hundred thousand dollars ($500,000) in value, calculating the value of any equity Awards granted during such calendar year based on the grant date fair value of
such Awards for financial reporting purposes. The Board may make exceptions to the applicable limit in this Section 10.3 for individual Non-Employee Directors in extraordinary circumstances, such as where any such individual Non-Employee
Directors are serving on a special litigation, transactions or other special committee of the Board, as the Board may determine in its discretion, provided that the Non-Employee Director receiving such additional compensation may not participate in
the decision to award such compensation involving such Non-Employee Director. 

  
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 SECTION 6. Award Agreements. 

Each Award under this Plan shall be evidenced by an Award Agreement in a form approved by the Committee setting forth the number of shares of Stock or Share
Units, as applicable, subject to the Award, and the price (if any) and term of the Award and, in the case of Performance-Based Awards, the applicable Performance Goals, if any. The Award Agreement shall also set forth (or incorporate by reference)
other material terms and conditions applicable to the Award as determined by the Committee consistent with the limitations of this Plan. 
 (a) Incorporated
Provisions. Award Agreements shall be subject to the terms of this Plan and shall be deemed to include the following terms: 
 (1)
Transferability: Unless otherwise designated by the Committee, an Award shall not be assignable or transferable, except by will or by the laws of descent and distribution, and during the lifetime of a Participant the Award shall be exercised only by
such Participant or by his or her guardian or legal representative; provided, that the Committee shall not have the authority to provide for transfers for consideration. An Award exercisable after the death of a Participant may be exercised by the
legatees, personal representatives or distributees of the Participant. The designation of a Beneficiary hereunder shall not constitute a transfer prohibited by the foregoing provisions. 

(2) Rights as Stockholder: A Participant shall have no rights as a holder of Stock with respect to any unissued securities covered by an Award
until the date the Participant becomes the holder of record of these securities. Except as provided in Section 7, no adjustment or other provision shall be made for dividends or other stockholder rights, except to the extent that the Award
Agreement provides for dividend equivalents or similar economic benefits. 
 (3) Withholding: The Participant shall be responsible for
payment of any taxes or similar charges required by law to be withheld from an Award or an amount paid in satisfaction of an Award and these obligations shall be paid by the Participant on or prior to the payment of the Award. In the case of an
Award payable in cash, the withholding obligation shall be satisfied by withholding the applicable amount and paying the net amount in cash to the Participant. In the case of an Award paid in shares of Stock, a Participant shall satisfy the
withholding obligation as provided in Section 5(g). (4) Maximum Term of Awards. No Option or Stock Appreciation Right may be exercised or converted to any extent or remain outstanding and unexercised, unconverted or unvested more than ten
years after the date such Option or Stock Appreciation Right was initially granted. The Committee may provide, at or after grant, that the period of time over which an Option, other than an Incentive Stock Option, or Stock Appreciation Right may be
exercised shall be automatically extended if on the scheduled expiration of such Award, the Participant’s exercise of such Award would violate applicable securities law or any insider trading policy of the Corporation; provided, however, that
during the extended exercise period the Option or Stock Appreciation Right may only be exercised to the extent such Award was exercisable in accordance with its terms immediately prior to such scheduled expiration date; provided further, however,
that such extended exercise period shall end not later than thirty (30) days after the exercise of such Option or Stock Appreciation Right first would no longer violate such laws. 

(b) Other Provisions. Award Agreements may include other terms and conditions as the Committee shall approve, including but not limited to the following: 

(1) Termination of Employment: A provision describing the treatment of an Award in the event of the retirement, disability, death or other
termination of a Participant’s employment with or services to the Corporation, including any provisions relating to the vesting, exercisability, forfeiture or cancellation of the Award in these circumstances, subject, in the case of
Performance-Based Awards, to the requirements for “performance-based compensation” under Code Section 162(m). 
 (2) Vesting;
Effect of Termination; Change in Control: Any other terms consistent with the terms of this Plan as are necessary and appropriate to effect the Award to the Participant, including but not limited to the vesting provisions, any requirements for
continued employment, any other restrictions or conditions (including performance requirements) of the Award, and the method by which (consistent with Section 7) the restrictions or conditions lapse, and the effect on the Award of a Change in
Control. Unless otherwise provided by the Committee in the applicable Award Agreement, (1) the minimum vesting period for Awards of Restricted Stock shall be three years from the date of grant (or one year in the case of Restricted Stock Awards
that are Performance-Based Awards) and (2) the vesting period of an Award of Restricted Stock may not be accelerated to a date that is within such minimum vesting period except in the event of the Participant’s death, permanent disability
or retirement or in the event of a Change in Control; provided, however, that the foregoing limitations shall not apply to Awards to Non-Employee Directors (in their capacity as such). 

  
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 (3) Replacement and Substitution: Any provisions permitting or requiring the surrender of
outstanding Awards or securities held by the Participant in whole or in part in order to exercise or realize rights under or as a condition precedent to other Awards, or in exchange for the grant of new or amended Awards under similar or different
terms; provided, that except in connection with an adjustment contemplated by Section 7, no such provisions of an Award Agreement shall permit a “Repricing” as defined in Section 8(d). 

(4) Dividends and Dividend Equivalents: Any provisions providing for the payment of dividends or dividend equivalents on unissued shares of
Stock or unpaid Share Units underlying an Award, on either a current or deferred or contingent basis, and either in cash or in additional shares of Stock; provided, however, that except under the circumstances set forth in Section 7 below,
dividend equivalents may not be paid with respect to Awards of Options or Stock Appreciation Rights, and any dividend or dividend equivalent rights granted with respect to Other Share-Based Awards, including Performance-Based Awards and restricted
stock units, shall not be paid unless and until the underlying shares of Stock to which such dividend or dividend equivalent rights relate vest. 
 (c)
Contract Rights, Forms and Signatures. Any obligation of the Corporation to any Participant with respect to an Award shall be based solely upon contractual obligations created by this Plan and an Award Agreement. No Award shall be enforceable until
the Award Agreement has been signed on behalf of the Corporation by an Executive Officer (other than the recipient) or his or her delegate. By accepting receipt of the Award Agreement, a Participant shall be deemed to have accepted and consented to
the terms of this Plan and any action taken in good faith under this Plan by and within the discretion of the Committee, the Board of Directors or their delegates, including but not limited to the incorporation of any applicable clawback policy
adopted by the Board or the Committee at any time. Unless the Award Agreement otherwise expressly provides, there shall be no third party beneficiaries of the obligations of the Corporation to the Participant under the Award Agreement. 

SECTION 7. Adjustments; Change in Control; Acquisitions. 
 (a)
Adjustments. If there shall occur any recapitalization, stock split (including a stock split in the form of a stock dividend), reverse stock split, merger, combination, consolidation, or other reorganization or any extraordinary dividend or other
extraordinary distribution in respect of the Stock (whether in the form of cash, Stock or other property), or any split-up, spin-off, extraordinary redemption, or exchange of outstanding Stock, or there shall occur any other similar corporate
transaction or event in respect of the Stock, or a sale of substantially all the assets of the Corporation as an entirety, then the Committee shall, in the manner and to the extent, if any, as it deems appropriate and equitable to the Participants
and consistent with the terms of this Plan, and taking into consideration the effect of the event on the holders of the Stock: 
 (1)
proportionately adjust any or all of: 
 (A) the number and type of shares of Stock and Share Units which thereafter may be made the subject
of Awards (including the specific maximum limits and numbers of shares of Stock or Share Units set forth elsewhere in this Plan), 
 (B) the
number and type of shares of Stock, other property, Share Units or cash subject to any or all outstanding Awards, 
 (C) the grant, purchase
or exercise price, or conversion ratio of any or all outstanding Awards, or of the Stock, other property or Share Units underlying the Awards, 

(D) the securities, cash or other property deliverable upon exercise or conversion of any or all outstanding Awards, 

(E) subject to Section 4(b), the performance targets or standards appropriate to any outstanding Performance-Based Awards, or 

  
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 (F) any other terms as are affected by the event; and/or 

(2) provide for: 
 (A) an
appropriate and proportionate cash settlement or distribution, or 
 (B) the substitution or exchange of any or all outstanding Awards, or
the cash, securities or property deliverable on exercise, conversion or vesting of the Awards. 
 The Committee shall act prior to an event described in
this paragraph (a) (including at the time of an Award by means of more specific provisions in the Award Agreement) if deemed necessary or appropriate to permit the Participant to realize the benefits intended to be conveyed by an Award in
respect of the Stock in the case of an event described in paragraph (a). 
 (b) Change in Control. The Committee may, in the Award Agreement, provide for
the effect of a Change in Control on an Award. Such provisions may include, but are not limited to any one or more of the following with respect to any or all Awards: (i) the specific consequences of a Change in Control on the Awards;
(ii) a reservation of the Committee’s right to determine in its discretion at any time that there shall be full acceleration or no acceleration of benefits under the Awards; (iii) that only certain or limited benefits under the Awards
shall be accelerated; (iv) that the Awards shall be accelerated for a limited time only; or (v) that acceleration of the Awards shall be subject to additional conditions precedent (such as a termination of employment following a Change in
Control). 
 In addition to any action required or authorized by the terms of an Award, the Committee may take any other action it deems appropriate to
ensure the equitable treatment of Participants in the event of a Change in Control, including but not limited to any one or more of the following with respect to any or all Awards: (i) the acceleration or extension of time periods for purposes
of exercising, vesting in, or realizing gain from, the Awards; (ii) the waiver of conditions on the Awards that were imposed for the benefit of the Corporation, (iii) provision for the cash settlement of the Awards for their equivalent
cash value (based solely on the Fair Market Value of the Award), as determined by the Committee, as of the date of the Change in Control; or (iv) such other modification or adjustment to the Awards as the Committee deems appropriate to maintain
and protect the rights and interests of Participants upon or following the Change in Control, including the cancellation of any Options or Stock Appreciation Rights whose exercise price (or base price, as the case may be) is less than the Fair
Market Value of a share of Stock on the date of the Change in Control. The Committee also may accord any Participant a right to refuse any acceleration of exercisability, vesting or benefits, whether pursuant to the Award Agreement or otherwise, in
such circumstances as the Committee may approve. 
 Notwithstanding the foregoing provisions of this Section 7(b) or any provision in an Award
Agreement to the contrary, if any Award to any Insider is accelerated to a date that is less than six months after the date of the Award, the Committee may prohibit a sale of the underlying Stock (other than a sale by operation or law in exchange
for or through conversion into other securities), and the Corporation may impose legend and other restrictions on the Stock to enforce this prohibition. 

(c) Change in Control Definition. For purposes of this Plan, with respect to any Award other than an Award issued pursuant to an Award Agreement that
separately defines the term “change in control,” a change in control shall include and be deemed to occur upon the following events: 

(1) The acquisition by any person or group (including a group within the meaning of Section 13(d)(3) or 14(d)(2) of the Exchange Act),
other than the Corporation or any of its Subsidiaries, of beneficial ownership (within the meaning of Rule 13d-3 under the Exchange Act) of a majority of the combined voting power of the Corporation’s then outstanding voting securities, other
than by any employee benefit plan maintained by the Corporation; 
 (2) The sale of all or substantially all of the assets of the
Corporation or of Engility Corporation or any successor thereto; 

  
 9 

 (3) The consummation of a merger, combination, consolidation, recapitalization, or other
reorganization of the Corporation with one or more other entities that are not Subsidiaries if, as a result of the consummation of such transaction less than 50 percent of the outstanding voting securities of the surviving or resulting corporation
shall immediately after the event be beneficially owned in the aggregate by the stockholders of the Corporation immediately prior to the event; or 

(4) The election, including the filling of vacancies, during any period of 24 months or less, of 50 percent or more, of the members of the
Board, without the approval of Continuing Directors, as constituted at the beginning of such period. “Continuing Directors” shall mean any director of the Corporation who either (i) is a member of the Board on the Restatement
Effective Date, or (ii) is nominated for election to the Board by a majority of the Board which is comprised of Directors who were, at the time of such nomination, Continuing Directors; provided , however, that no individual shall be
considered a Continuing Director if such individual initially assumed office as a result of the actual or threatened solicitation of proxies or consents by or on behalf of a Person other than the Board (a “Proxy Contest”) including by
reason of any agreement intended to avoid or settle any Proxy Contest; or 
 Notwithstanding the foregoing, unless otherwise provided in the applicable
Award Agreement, solely for the purpose of determining the timing of any payments pursuant to any Award constituting a “deferral of compensation” subject to Section 409A of the Code, a Change in Control shall mean a “change in
the ownership” of the Corporation, a “change in the effective control” of the Corporation, or a “change in the ownership of a substantial portion of the assets” of the Corporation as such terms are defined in Section 1.409A-3(i)(5) of the Treasury Regulations. 
 (d) Business Acquisitions. Awards may be granted under this
Plan on the terms and conditions as the Committee considers appropriate, which may differ from those otherwise required by this Plan to the extent necessary to reflect a substitution for or assumption of stock incentive awards held by employees of
other entities who become employees of the Corporation or a Subsidiary as the result of a merger of the employing entity with, or the acquisition of the property or stock of the employing entity by, the Corporation or a Subsidiary (an
“Acquisition”), directly or indirectly (such awards, “Substitute Awards”). Substitute Awards shall not be counted against the limitations set forth in Section 5(a) nor be added back pursuant to Section 5(c), provided
that Substitute Awards issued in connection with the assumption of, or in substitution for, Incentive Stock Options shall be counted against the limits set forth in Section 5(a)(ii) of the Plan. Additionally, in the event that a company
acquired by the Corporation or any Subsidiary or with which the Corporation or any Subsidiary combines has shares available under a pre-existing plan approved by stockholders and not adopted in contemplation of such acquisition or combination, the
shares available for grant pursuant to the terms of such pre-existing plan (as adjusted, to the extent appropriate, using the exchange ratio or other adjustment or valuation ratio or formula used in such
acquisition or combination to determine the consideration payable to the holders of common stock of the entities party to such acquisition or combination) may be used for Awards under the Plan and shall not reduce the Shares authorized for grant
under the Plan; provided that Awards using such available shares shall not be made after the date awards or grants could have been made under the terms of the pre-existing plan, absent the acquisition or combination, and shall only be made to
individuals who were not Employees or Directors prior to such acquisition or combination. 
 SECTION 8. Administration. 

(a) Committee Authority and Structure. This Plan and all Awards granted under this Plan shall be administered by the Compensation Committee of the Board or
such other committee of the Board or subcommittee of the Compensation Committee as may be designated by the Board and constituted so as to permit this Plan to comply with the disinterested administration requirements of Rule 16b-3 under the Exchange
Act and the “outside director” requirement of Code Section 162(m). The members of the Committee shall be designated by the Board. A majority of the members of the Committee (but not fewer than two) shall constitute a quorum. The vote
of a majority of a quorum or the unanimous written consent of the Committee shall constitute action by the Committee. 

  
 10 

 (b) Selection and Grant. The Committee shall have the authority to determine the individuals (if any) to whom
Awards will be granted under this Plan, the type of Award or Awards to be made, and the nature, amount, pricing, timing, and other terms of Awards to be made to any one or more of these individuals, subject to the terms of this Plan. 

(c) Construction and Interpretation. The Committee shall have the power to interpret and administer this Plan and Award Agreements, and to adopt, amend and
rescind related rules and procedures. All questions of interpretation and determinations with respect to this Plan, the number of shares of Stock, Options, Stock Appreciation Rights, or units or other Awards granted, and the terms of any Award
Agreements, the adjustments required or permitted by Section 7, and other determinations hereunder shall be made by the Committee and its determination shall be final and conclusive upon all parties in interest. In the event of any conflict
between an Award Agreement and any non-discretionary provisions of this Plan, the terms of this Plan shall govern. 
 (d) Express Authority to Change Terms
of Awards. The Committee may, at any time, alter or amend any or all Award Agreements under this Plan in any manner that would be authorized for a new Award under this Plan, including but not limited to any manner set forth in Section 9
(subject to any applicable limitations thereunder), except that no amendment or cancellation of an Award may effect a Repricing of such Award, except in connection with an adjustment pursuant to Section 7 or with the prior approval of the
Corporation’s shareholders. A “Repricing” means any of the following: (i) changing the terms of an Award to lower its exercise price or base price, (ii) cancelling an Award with an exercise price or base price in exchange
for other Awards with a lower exercise price or base price, or (iii) cancelling an Award with an exercise price or base price at a time when such price is equal to or greater than the Fair Market Value of the underlying Stock in exchange for
other Awards, cash or property. Without limiting the Committee’s authority under this plan (including Sections 7 and 9), but subject to any express limitations of this Plan (including the prohibitions on Repricing set forth in this
Section 8(d)), the Committee shall have the authority to accelerate the exercisability or vesting of an Award, to extend the term or waive early termination provisions of an Award (subject to the maximum ten-year term under
Section 6(a)(4)), and to waive the Corporation’s rights with respect to an Award or restrictive conditions of an Award (including forfeiture conditions), in any case in such circumstances as the Committee deems appropriate. 

(e) Rule 16b-3 Conditions; Bifurcation of Plan. It is the intent of the Corporation that this Plan and Awards hereunder satisfy and be interpreted in a
manner, that, in the case of Participants who are or may be Insiders, satisfies any applicable requirements of Rule 16b-3, so that these persons will be entitled to the benefits of Rule 16b-3 or other exemptive rules under Section 16 under the
Exchange Act and will not be subjected to avoidable liability thereunder as to Awards intended to be entitled to the benefits of Rule 16b-3. If any provision of this Plan or of any Award would otherwise frustrate or conflict with the intent
expressed in this Section 8(e), that provision to the extent possible shall be interpreted and deemed amended so as to avoid such conflict. To the extent of any remaining irreconcilable conflict with this intent, the provision shall be deemed
disregarded as to Awards intended as Rule 16b-3 exempt Awards. Notwithstanding anything to the contrary in this Plan, the provisions of this Plan may at any time be bifurcated by the Board or the Committee in any manner so that certain provisions of
this Plan or any Award Agreement intended (or required in order) to satisfy the applicable requirements of Rule 16b-3 are only applicable to Insiders and to those Awards to Insiders intended to satisfy the requirements of Rule 16b-3. 

(f) Delegation and Reliance. The Committee may delegate to the officers or employees of the Corporation the authority to make grants hereunder and to
otherwise execute and deliver those instruments and documents, to do all acts and things, and to take all other steps deemed necessary, advisable or convenient for the effective administration of this Plan in accordance with its terms and purpose,
except that the Committee may not delegate any discretionary authority to grant or amend an award or with respect to substantive decisions or functions regarding this Plan or Awards as these relate to the material terms of Performance-Based Awards
to Executive Officers or to the timing, eligibility, pricing, amount or other material terms of Awards to Insiders. In making any determination or in taking or not taking any action under this Plan, the Board and the Committee may obtain and may
rely upon the advice of experts, including professional advisors to the Corporation. No director, officer, employee or agent of the Corporation shall be liable for any such action or determination taken or made or omitted in good faith. 

  
 11 

 (g) Exculpation and Indemnity. Neither the Corporation nor any member of the Board of Directors or of the
Committee, nor any other person participating in any determination of any question under this Plan, or in the interpretation, administration or application of this Plan, shall have any liability to any party for any action taken or not taken in good
faith under this Plan or for the failure of an Award (or action in respect of an Award) to satisfy Code requirements as to incentive stock options or to realize other intended tax consequences, to qualify for exemption or relief under Rule 16b-3 or
to comply with any other law, compliance with which is not required on the part of the Corporation. 
 SECTION 9. Amendment and Termination of this Plan.

 The Board of Directors may at any time amend, suspend or discontinue this Plan, subject to any stockholder approval that may be required under applicable
law. Notwithstanding the foregoing, no such action by the Board or the Committee shall, in any manner adverse to a Participant other than as expressly permitted by the terms of an Award Agreement, affect any Award then outstanding and evidenced by
an Award Agreement without the consent in writing of the Participant or, to the extent applicable, a Beneficiary, a Participant’s family member or a trust (or similar estate planning entity) established for the benefit of a Participant and/or
one or more of the Participant’s family members entitled to an Award. Notwithstanding the above, any amendment that would (i) materially increase the aggregate number of shares of Stock or other equity interest(s) that may be issued
hereunder, (ii) materially modify the requirements as to eligibility for participation in this Plan, (iii) effect a Repricing, or (iv) otherwise require shareholder approval under the listing standards of the New York Stock Exchange
(or such other principal market in which the Corporation’s shares are traded) or any other law or regulation, shall be subject to shareholder approval. 

SECTION 10. Miscellaneous. 
 (a) Unfunded Plans. This Plan shall
be unfunded. Neither the Corporation nor the Board of Directors nor the Committee shall be required to segregate any assets that may at any time be represented by Awards made pursuant to this Plan. Neither the Corporation, the Committee, nor the
Board of Directors shall be deemed to be a trustee of any amounts to be paid or securities to be issued under this Plan. 
 (b) Rights of Employees. 

(1) No Right to an Award. Status as an Employee shall not be construed as a commitment that any one or more Awards will be made under this
Plan to an Employee or to Employees generally. Status as a Participant shall not entitle the Participant to any additional Award. 
 (2) No
Assurance of Employment or Other Service Relationship. Nothing contained in this Plan (or in any other documents related to this Plan or to any Award) shall confer upon any Employee or Participant any right to continue in the employ or other service
of the Corporation or any Subsidiary or constitute any contract (of employment or otherwise) or limit in any way the right of the Corporation or any Subsidiary to change a person’s compensation or other benefits or to terminate the employment
or services of a person with or without cause. 
 (c) Effective Date; Duration. This Plan has been adopted by the Board of Directors of the Corporation and
will amend and restate the previous plan as set forth herein effective as of the date on which the Corporation’s public shareholders approve the Plan (the “Restatement Effective Date”); provided, that the previous plan shall
remain in effect in the event the Corporation’s public shareholders fail to approve this Plan. This Plan shall remain in effect until any and all Awards under this Plan have been exercised, converted or terminated under the terms of this Plan
and applicable Award Agreements. Notwithstanding the foregoing, no Award may be granted under this Plan after the tenth anniversary of the Restatement Effective Date; provided, however, that any Award granted prior to such date may be amended after
such date in any manner that would have been permitted hereunder prior to such date. 

  
 12 

 (d) Compliance with Laws. This Plan, Award Agreements, and the grant, exercise, conversion, operation and vesting
of Awards, and the issuance and delivery of shares of Stock and/or other securities or property or the payment of cash under this Plan, Awards or Award Agreements, are subject to compliance with all applicable federal and state laws, rules and
regulations (including but not limited to state and federal insider trading, registration, reporting and other securities laws and federal margin requirements) and to such approvals by any listing, regulatory or governmental authority as may be
necessary or, in the opinion of counsel for the Corporation, advisable in connection therewith. Any securities delivered under this Plan shall be subject to such restrictions (and the person acquiring such securities shall, if requested by the
Corporation, provide such evidence, assurance and representations to the Corporation as to compliance with any of such restrictions) as the Corporation may deem necessary or desirable to assure compliance with all applicable legal requirements. 

(e) Awards to Non-U.S. Participants. The Committee shall have the power and authority to determine which service providers outside the United States shall be
eligible to participate in the Plan. Without amending the Plan, the Committee may grant Awards to eligible persons who are foreign nationals and/or reside outside the United States on such terms and conditions different from those specified in this
Plan as may in the judgment of the Committee be necessary or desirable to foster and promote achievement of the purposes of this Plan. The Committee may adopt, amend or rescind rules, procedures or sub-plans relating to the operation and
administration of the Plan to accommodate the specific requirements of local laws, procedures, and practices. 
 (f) Section 409A. Notwithstanding
other provisions of the Plan or any Award Agreements thereunder, no Award shall be granted, deferred, accelerated, extended, paid out or modified under this Plan in a manner that would result in the imposition of an additional tax under
Section 409A of the Code upon a Participant. In the event that it is reasonably determined by the Board or Committee that, as a result of Section 409A of the Code, payments in respect of any Award under the Plan may not be made at the time
contemplated by the terms of the Plan or the relevant Award agreement, as the case may be, without causing the Participant holding such Award to be subject to taxation under Section 409A of the Code, the Corporation will make such payment on
the first day that would not result in the Participant incurring any tax liability under Section 409A of the Code; which, if the Participant is a “specified employee” within the meaning of the Section 409A, shall be the first day
following the six-month period beginning on the date of Participant’s termination of Employment. Notwithstanding the foregoing, each Participant is solely responsible and liable for the satisfaction of all taxes and penalties that may be
imposed on him or her, or in respect of any payment or benefit delivered in connection with the Plan (including any taxes and penalties under Section 409A of the Code), and the Corporation shall not have any obligation to indemnify or otherwise
hold any Participant harmless from any or all such taxes or penalties. 
 (g) Applicable Law. This Plan, Award Agreements and any related documents and
matters shall be governed by, and construed in accordance with, the laws of the State of Delaware and applicable Federal law. 
 (h) Non-Exclusivity of
Plan. Nothing in this Plan shall limit or be deemed to limit the authority of the Corporation, the Board or the Committee to grant awards or authorize any other compensation, with or without reference to the Stock, under any other plan or authority.

 (i) Corporation Clawback Policy. Notwithstanding any provision of the Plan or any Award Agreement to the contrary, the Corporation may require the
Participant to return shares of Stock (or the value of such Stock when originally released to Participant), dividends paid thereon and any other amount required by law to be returned, in the event that such repayment is required in order to comply
with any Corporation compensation recovery (or other clawback) policy as then in effect or any laws or regulations relating to restatements of the Corporation’s publicly-reported financial results. 

  
 13EX-10.2

 EXHIBIT 10.2 

ENGILITY HOLDINGS, INC. 

EMPLOYEE STOCK PURCHASE PLAN 

ARTICLE I. 
 INTRODUCTION

 1.1 ESTABLISHMENT OF PLAN. Engility Holdings, Inc., a Delaware corporation (the “Company”), adopts the following nonqualified
employee stock purchase plan for its eligible employees. This Plan shall be known as the Engility Holdings, Inc. Employee Stock Purchase Plan. 
 1.2
PURPOSE. The purpose of this Plan is to provide an opportunity for eligible employees of the Employer to become stockholders in the Company. It is believed that broad-based employee participation in the ownership of the business will help to
achieve the unity of purpose conducive to the continued growth of the Employer and to the mutual benefit of its employees and stockholders. 
 1.3
QUALIFICATION. This Plan is not intended to be an employee stock purchase plan which qualifies for favorable Federal income tax treatment under Section 423 of the Code. 

1.4 RULE 16B-3 COMPLIANCE. This Plan is intended to comply with Rule 16b-3 under the Securities Exchange Act of 1934, and should be interpreted in
accordance therewith. 
 ARTICLE II. 

DEFINITIONS 
 As used herein, the following
words and phrases shall have the meanings specified below: 
 2.1 BOARD OF DIRECTORS. The Board of Directors of the Company. 

2.2 CLOSING MARKET PRICE. The volume weighted average of the closing price of the Stock as reported in the consolidated trading of the New York Stock
Exchange listed securities for the last five (5) trading days of the Option Period; provided that if there should be any material alteration in the present system of reporting sales prices of such Stock, or if such Stock should no longer be
listed on the New York Stock Exchange, the market value of the Stock as of a particular date shall be determined in such a method as shall be specified by the Plan Administrator. 

2.3 CODE. The Internal Revenue Code of 1986, as amended from time to time. 

2.4 COMMENCEMENT DATE. The first day of each Option Period. The first Commencement Date shall be July 1, 2016. 

2.5 CONTRIBUTION ACCOUNT. The account established on behalf of a Participant to which shall be credited the amount of the Participant’s
contributions, pursuant to Article V. 
 2.6 EFFECTIVE DATE. July 1, 2016. 

2.7 EMPLOYEE. Each employee of the Employer except (i) casual employees, (ii) on-call employees, (iii) interns and (iv) employees
who are citizens or residents of a foreign jurisdiction (without regard to whether they are also citizens of the United States or resident aliens), unless on United States based payroll. The Administrator may determine, as to any Option Period, that
the offer will not be extended to highly compensated Employees within the meaning of Section 414(q) of the Code. 
 2.8 EMPLOYER. The Company
and any corporation (i) which is a Subsidiary of the Company, (ii) which is authorized by the Board of Directors to adopt this Plan with respect to its Employees, and (iii) which adopts this Plan. The term “Employer” shall
include any corporation into which an Employer may be merged or consolidated or to which all or substantially all of its assets may be transferred, provided that the surviving or transferee corporation would qualify as a Subsidiary under
Section 2.19 hereof and that such corporation does not affirmatively disavow this Plan. 

 2.9 ENTITY. Any individual, corporation, partnership, limited liability company, association, joint-stock
company, trust, business trust, unincorporated organization, government or political subdivision thereof or other entity. 
 2.10 EXERCISE DATE. The
last trading date of each Option Period on the New York Stock Exchange. 
 2.11 EXERCISE PRICE. The price per share of the Stock to be charged to
Participants at the Exercise Date, as determined in Section 6.3. 
 2.12 FIVE-PERCENT STOCKHOLDER. An Employee who owns five percent
(5%) or more of the total combined voting power or value of all classes of stock or equity interests of the Company or any parent or Subsidiary thereof. In determining this five percent (5%) test, shares of stock or equity interests which
the Employee may purchase under outstanding options, as well as stock or equity interests attributed to the Employee under Section 424(d) of the Code, shall be treated as stock or equity interests owned by the Employee in the numerator, but
shares of stock or equity interests which may be issued under options shall not be counted in the total of outstanding shares in the denominator. 
 2.13
GRANT DATE. The first trading date of each Option Period on the New York Stock Exchange. 
 2.14 OPTION PERIOD. Shall mean the period established
in advance by the Plan Administrator during which payroll deductions shall be collected to purchase Stock pursuant to an offering under this Plan. Unless otherwise established by the Plan Administrator prior to the start of an Option Period, the
Plan’s Option Periods shall mean successive periods of six (6) consecutive months (i) commencing on January 1 and ending on June 30 and (ii) commencing on July 1 and ending on December 31. 

2.15 PARTICIPANT. Any Employee of an Employer who has met the conditions for eligibility as provided in Article IV and who has elected to participate
in the Plan. 
 2.16 PLAN. The Engility Holdings, Inc. Employee Stock Purchase Plan. 

2.17 PLAN ADMINISTRATOR. The committee composed of one or more individuals to whom authority is delegated by the Board of Directors to administer the
Plan. The initial committee shall be the Compensation Committee of the Board of Directors. 
 2.18 STOCK. Those shares of common stock of the Company
which are reserved pursuant to Section 6.1 for issuance upon the exercise of options granted under this Plan, including shares of common stock purchased by the Company for issuance hereunder through the open market. 

2.19 SUBSIDIARY. Any Entity (other than the Company) of which more than 50% of the voting power of its equity securities or equity interests are owned
directly or indirectly by the Company. 
 ARTICLE III. 

STOCKHOLDER APPROVAL 
 3.1 STOCKHOLDER
APPROVAL REQUIRED. This Plan must be approved by the stockholders of the Company within the period beginning twelve (12) months before and ending twelve (12) months after its adoption by the Board of Directors. 

  
 2 

 3.2 STOCKHOLDER APPROVAL FOR CERTAIN AMENDMENTS. Without the approval of the stockholders of the Company,
no amendment to this Plan shall (i) increase the number of shares reserved under the Plan, other than as provided in Section 10.3, (ii) alter the designation of Entities whose employees shall be permitted to participate in the Plan,
except as permitted by applicable law or (iii) alter the granting corporation or the Stock available for purchase under the Plan. Approval by stockholders must occur within one (1) year of such amendment or such amendment shall be void
ab initio , comply with applicable provisions of the corporate certificate of incorporation and bylaws of the Company, comply with Delaware law prescribing the method and degree of stockholder approval required for issuance of corporate stock or
options and comply with any other applicable law or listing standards. 
 ARTICLE IV. 

ELIGIBILITY AND PARTICIPATION 
 4.1
CONDITIONS. Each Employee shall become eligible to become a Participant on the Commencement Date next following the date he is initially employed by the Employer. No Employee who is a Five-Percent Stockholder shall be eligible to participate in
the Plan. Notwithstanding anything to the contrary contained herein, no individual who is not an Employee shall be granted an option to purchase Stock under the Plan. 

4.2 APPLICATION FOR PARTICIPATION. The Company will make available to each Employee who becomes eligible to participate in the Plan a summary of the
Plan and the Plan document. If such Employee elects to participate hereunder, he shall complete an enrollment form (or on-line enrollment process as determined by the Plan Administrator) and file it with the Employer or the third party plan
administrator appointed by the Plan Administrator, no later than fifteen (15) days prior to the next Commencement Date (the “Enrollment Period”). The duration and timing of any Enrollment Periods may be changed or modified by the Plan
Administrator from time to time. The completed enrollment form shall indicate the amount of Employee contributions authorized by the Employee. If no new enrollment form is filed by a Participant in advance of any Option Period after the initial
Option Period, that Participant shall be deemed to have elected to continue to participate with the same contribution previously elected (subject to the limit of ten percent (10%) of base pay). If any Employee does not elect to participate in
any given Option Period, he may elect to participate on any future Commencement Date so long as he continues to meet the eligibility requirements. 
 4.3
DATE OF PARTICIPATION. All Employees who elect to participate shall be enrolled in the Plan commencing with the first pay date after the Commencement Date following their submission of the enrollment form. Upon becoming a Participant, the
Participant shall be bound by the terms of this Plan, including any amendments whenever made. 
 4.4 ACQUISITION OR CREATION OF SUBSIDIARY. Except as
otherwise provided (i) in a written notice provided by the Plan Administrator prior to a Commencement Date or (ii) pursuant to the terms of an applicable merger, asset, stock or other similar acquisition agreement, if an Entity is acquired
by the Company or another Employer so that the acquired Entity becomes a Subsidiary, or if a Subsidiary is created, the Subsidiary in either case shall become an Employer and its Employees shall become eligible to participate in the Plan on the
first reasonably practicable Commencement Date following the acquisition or creation of the Subsidiary (taking into consideration such factors as conversion of payroll systems, assumption of other benefit plans and other administrative matters), but
in no event later than the second Commencement Date occurring after the acquisition or creation of the Subsidiary, as the case may be. Notwithstanding the foregoing, the Board of Directors may by appropriate resolutions (i) provide that the
acquired or newly created Subsidiary shall not be a participating Employer, (ii) specify that the acquired or newly created Subsidiary will become a participating Employer on a date later than the second Commencement Date after the acquisition
or creation, or (iii) attach any condition whatsoever to eligibility of the employees of the acquired or newly created Subsidiary, except to the extent such condition would not comply with applicable law or listing standards. 

  
 3 

 ARTICLE V. 

CONTRIBUTION ACCOUNT 
 5.1 EMPLOYEE
CONTRIBUTIONS. The enrollment form signed or executed on-line, as determined by the Plan Administrator, by each Participant shall authorize the Employer to deduct from the Participant’s compensation an after-tax amount during each payroll
period not less than one percent (1%) of the Participant’s base pay on the Commencement Date nor more than an amount which is up to ten percent (10%) of the Participant’s base pay on the Commencement Date. If no new enrollment
form is filed by a Participant in advance of any Option Period after the initial Option Period, that Participant shall be deemed to have elected to continue to participate with the same contribution previously elected (subject to the limit of ten
percent (10%) of base pay). The permitted deferral amounts, including any minimum or maximum limit, may be changed or modified by the Plan Administrator from time to time. A Participant’s base pay shall be determined before subtracting any
elective deferrals to a qualified plan under Section 401(k) of the Code, salary reduction contributions to a cafeteria plan under Section 125 of the Code or elective deferrals to a nonqualified deferred compensation plan, as applicable.
Unless otherwise determined by the Plan Administrator with respect to an Option Period, the dollar amount deducted each payday shall be credited to the Participant’s Contribution Account. Participant contributions will not be permitted to
commence at any time during the Option Period other than on the Commencement Date. Unless otherwise determined by the Plan Administrator with respect to an Option Period, no interest will accrue on any contributions or on the balance in a
Participant’s Contribution Account. 
 5.2 MODIFICATION OF CONTRIBUTION RATE. No change shall be permitted in a Participant’s amount of
withholding except upon a Commencement Date, and then only if the Participant files a new enrollment form or on-line form with the Employer or third party administrator, as determined by the Plan Administrator, during the applicable Enrollment
Period designating the desired withholding rate. Notwithstanding the foregoing, a Participant may notify the Employer at any time (except during the periods from June 16 through June 30 and December 17 through December 31) that
he wishes to discontinue his contributions. This notice shall be in writing or made on-line, as determined by the Plan Administrator, or on such forms as provided by the Employer and shall become effective immediately. The Participant shall become
eligible to recommence contributions on the next Commencement Date. 
 5.3 WITHDRAWAL OF CONTRIBUTIONS. A Participant may elect to withdraw the
balance of his Contribution Account at any time during the Option Period prior to the Exercise Date (except during the periods from June 16 through June 30 and December 17 through December 31). Withdrawn funds will be returned to
the employee through payroll, as soon as administratively practical typically within two pay periods. The option granted to a Participant shall be canceled upon his withdrawal of the balance in his Contribution Account. This election to withdraw
must be in writing on such forms as may be provided by the Employer. If contributions are withdrawn in this manner, further contributions during that Option Period will be discontinued in the same manner as provided in Section 5.2, and the
Participant shall become eligible to recommence contributions on the next Commencement Date. 
 5.4 LIMITATIONS ON CONTRIBUTIONS. During each Option
Period, the total contributions by a Participant to his Contribution Account shall not exceed ten percent (10%) of the Participant’s base pay for the Option Period. If a Participant’s total contributions should exceed this limit, the
excess shall be returned to the Participant after the end of the Option Period, without interest. The permitted deferral amounts, including any minimum or maximum limit, may be changed or modified by the Plan Administrator from time to time. 

ARTICLE VI. 
 ISSUANCE
AND EXERCISE OF OPTIONS 
 6.1 RESERVED SHARES OF STOCK. The initial maximum aggregate number of shares of Stock that may be issued under the
Plan shall be One Million (1,000,000). Shares of Stock issued under the Plan shall consist of authorized but unissued shares, reacquired shares, including in the open market, or any combination thereof. If an outstanding option for any reason
expires or is terminated or canceled without having been exercised in full or for any reason is no longer exercisable in full or in part, the shares of Stock allocable to the unexercised portion of such option shall again be available for issuance
under the Plan. 

  
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 6.2 ISSUANCE OF OPTIONS. On the Grant Date each Participant shall be deemed to receive an option to
purchase Stock with the number of shares and Exercise Price determined as provided in this Article VI, subject to the maximum limits specified in Section 6.6(a). All such options shall be automatically exercised on the following Exercise Date,
except for options which are canceled when a Participant withdraws the balance of his Contribution Account or which are otherwise terminated under the provisions of this Plan. 

6.3 DETERMINATION OF EXERCISE PRICE. Unless otherwise established by the Plan Administrator prior to the start of an Option Period, the Exercise Price
of the options granted under this Plan for any Option Period shall be ninety percent (90%) of the Closing Market Price of the Stock on the Exercise Date. The Plan Administrator, in its sole discretion, shall determine the percentage of the
Exercise Price and the date or dates upon which such Exercise Price will be based for each Option Period and shall provide notice of such provisions to Participants prior to the Commencement Date of each Option Period. 

6.4 PURCHASE OF STOCK. On an Exercise Date, all options shall be automatically exercised, except that the options of a Participant who has terminated
employment pursuant to Section 7.1 or who has withdrawn all his contributions shall expire. The Contribution Account of each Participant shall be used to purchase the maximum number of whole and fractional shares of Stock determined by dividing
the Exercise Price into the balance of the Participant’s Contribution Account. 
 6.5 TERMS OF OPTIONS. Options granted under this Plan shall be
subject to such amendment or modification as the Employer shall deem necessary to comply with any applicable law or regulation, including any applicable tax withholding obligations, and shall contain such other provisions as the Employer shall from
time to time approve and deem necessary. 
 6.6 LIMITATIONS ON OPTIONS. The options granted hereunder are subject to the following limitations: 

(a) The maximum number of shares of Stock which may be purchased by any Participant on an Exercise Date, subject to the limit provided for in
Section 6.6(b) herein, shall be five thousand (5,000) shares. This maximum number of shares shall be adjusted as determined by the Plan Administrator in accordance with, and upon the occurrence of an event described in, Section 10.3.
Any amounts contributed by a Participant during an Option Period which may not be used to purchase Stock due to the share limit under this Section 6.6(a) shall be returned to the participant in cash, without interest. 

(b) No Participant shall be permitted to accrue the right to purchase during any calendar year Stock under this Plan (or any other employee
stock purchase plan of the Employer, a parent or a Subsidiary) having a fair market value of greater than twenty-five thousand dollars ($25,000.00) (as determined on the Grant Date for the Option Period during which each such share of Stock is
purchased). 
 (c) No option may be granted to a Participant if the Participant immediately after the option is granted would be a
Five-Percent Stockholder. 
 (d) No Participant may assign, transfer or otherwise alienate any options granted to him under this Plan,
otherwise than by will or the laws of descent and distribution, and such options must be exercised during the Participant’s lifetime only by him. 

6.7 WITHHOLDING OF TAXES. Upon the Exercise Date, the Company shall have the right and is hereby authorized to satisfy any applicable withholding
obligations or withholding taxes (“Withholding Taxes”), including any federal Withholding Taxes as set forth by Internal Revenue Service guidelines for the employer’s minimum statutory withholding, with respect to the
Participant’s purchase of Stock. Participants will be required to pay withholding and employment taxes on the Exercise Date on the amount of the discount received on the Shares due to the nonqualified status of the Plan. 

6.8 PRO-RATA REDUCTION OF OPTIONED STOCK. If the total number of shares of Stock to be purchased under options by all Participants on an Exercise Date
exceeds the number of shares of Stock remaining authorized for issuance under Section 6.1, a pro-rata allocation of the shares of Stock available for issuance will be made among Participants in proportion to their respective Contribution
Account balances on the Exercise Date, and any money remaining in the Contribution Accounts shall be returned to the Participants, without interest. 

  
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 6.9 STATE SECURITIES LAWS. Notwithstanding anything to the contrary contained herein, the Company shall
not be obligated to issue shares of Stock to any Participant if to do so would violate any State (or other applicable) securities law applicable to the sale of Stock to such Participant. In the event that the Company refrains from issuing shares of
Stock to any Participant in reliance on this Section, the Company shall return to such Participant the amount in such Participant’s Contribution Account that would otherwise have been applied to the purchase of Stock. 

ARTICLE VII. 

TERMINATION OF PARTICIPATION 
 7.1
TERMINATION OF EMPLOYMENT. Any Employee whose employment with the Employer is terminated during the Option Period prior to the Exercise Date for any reason except death or disability shall cease being a Participant immediately. The balance of
that Participant’s Contribution Account shall be paid to such Participant as soon as practical after his termination. The option not yet exercised during such Option Period by a terminated Participant shall be null and void. 

7.2 DEATH. If a Participant should die while employed by the Employer, no further contributions on behalf of the deceased Participant shall be made.
The legal representative of the deceased Participant may elect to withdraw the balance in said Participant’s Contribution Account by notifying the Employer in writing prior to the Exercise Date in the Option Period during which the Participant
died (except during the periods from June 16 through June 30 and December 17 through December 31). In the event no election to withdraw is made on or before the June 16 or December 17 preceding the Exercise Date, the
balance accumulated in the deceased Participant’s Contribution Account shall be used to purchase shares of Stock in accordance with Section 6.4. 

7.3 DISABILITY. If a Participant should terminate employment with the Employer on account of disability, as determined by reference to the definition
of “disability” in the Employer’s long-term disability plan, no further contributions on behalf of the disabled Participant shall be made. The Participant may elect to withdraw the balance in his Contribution Account by notifying the
Employer in writing prior to the Exercise Date in the Option Period during which the Participant became disabled (except during the periods from June 16 through June 30 and December 17 through December 31). In the event no
election to withdraw is made on or before the June 16 or December 17 preceding the Exercise Date, the balance accumulated in the disabled Participant’s Contribution Account shall be used to purchase shares of Stock in accordance with
Section 6.4. 
 ARTICLE VIII. 

OWNERSHIP OF STOCK 
 8.1 ISSUANCE OF
STOCK. As soon as practical after the Exercise Date, the Plan Administrator will, in its sole discretion, either credit a share account maintained for the benefit of each Participant or issue certificates to each Participant for the number of
shares of Stock purchased under the Plan by such Participant during an Option Period (less any shares of Stock withheld pursuant to Section 6.7). Such determination by the Plan Administrator shall apply equally to all shares of Stock purchased
during the Option Period. Certificates may be issued, at the request of a Participant, in the name of the Participant, jointly in the name of the Participant and a member of the Participant’s family, to the Participant as custodian for the
Participant’s child under the Gift to Minors Act, or to the legal representative of a deceased Participant. 

  
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 8.2 RESTRICTIONS ON SALE. Unless another period is designated by the Plan Administrator in advance of the
Commencement Date of an Option Period, as discussed below, any shares of Stock purchased under the Plan may not be sold, transferred or otherwise disposed of by an actively employed Participant (or their legal representative or estate, as
applicable) for six (6) months following the applicable Exercise Date (the “Restricted Period”). Terminated Participants (or their legal representative or estate, as applicable) are not subject to the restrictions on resale following
their termination date. The Plan Administrator may, in its sole discretion, place additional restrictions on the sale or transfer of shares of Stock purchased under the Plan during any Option Period (including the designation of a new Restricted
Period) by notice to all Participants of the nature of such restrictions given in advance of the Commencement Date of such Option Period. The additional restrictions may, among other things, change the Restricted Period to a period of up to two
years from the Grant Date, subject to such exceptions as the Plan Administrator may determine (e.g., termination of employment with the Employer). Certificates issued pursuant to Section 8.1 for shares that are restricted, shall, in the
discretion of the Plan Administrator, contain a legend disclosing the nature and duration of the restriction (including a description of the Restricted Period). Any such restrictions and exceptions determined by the Plan Administrator shall be
applicable equally to all shares of Stock purchased during the Option Period for which the restrictions are first applicable. In addition, the Restricted Period and such other restrictions and exceptions applicable to the Stock shall remain
applicable during subsequent Option Periods unless otherwise determined by the Plan Administrator. If the Plan Administrator should change or eliminate any restrictions for a subsequent Option Period, notice of such action shall be given to all
Participants. 
 8.3 TRANSFER OF OWNERSHIP. A Participant who purchases shares of Stock under this Plan shall be transferred at such time
substantially all of the rights of ownership of such shares of Stock. Such rights of ownership shall include the right to vote, the right to receive declared dividends, the right to share in the assets of the Employer in the event of liquidation,
the right to inspect the Employer’s books and the right to pledge or sell such Stock subject to the restrictions in the Plan. 

ARTICLE IX. 

ADMINISTRATION AND AMENDMENT 
 9.1
ADMINISTRATION. The Plan Administrator shall (i) administer the Plan, (ii) keep records of the Contribution Account balance of each Participant, (iii) keep records of the share account balance of each Participant,
(iv) interpret the Plan, (v) determine all questions arising as to eligibility to participate, amount of contributions permitted, determination of the Exercise Price, and all other matters of administration, and (vi) determine whether
to place restrictions on the sale and transfer of Stock and the nature of such restrictions, as provided in Section 8.2. The Plan Administrator shall have such duties, powers and discretionary authority as may be necessary to discharge the
foregoing duties, and may delegate any or all of the foregoing duties to any individual or individuals (including officers or other Employees who are Participants). The Board of Directors shall have the right at any time and without notice to remove
or replace any individual or committee of individuals serving as Plan Administrator. All determinations by the Plan Administrator shall be conclusive and binding on all persons. Any rules, regulations, or procedures that may be necessary for the
proper administration or functioning of this Plan that are not covered in this Plan document shall be promulgated and adopted by the Plan Administrator. 

9.2 AMENDMENT. The Board of Directors of the Company may at any time amend the Plan in any respect, including termination of the Plan, without notice
to Participants. If the Plan is terminated, all options outstanding at the time of termination shall become null and void and the balance in each Participant’s Contribution Account shall be paid to that Participant, without interest.
Notwithstanding the foregoing, no amendment of the Plan as described in Section 3.2, or as may be required to otherwise comply with any applicable tax or regulatory requirement, shall become effective until and unless such amendment is approved
by the stockholders of the Company in accordance with the approval requirements of Section 3.2. 
 ARTICLE X. 

MISCELLANEOUS 
 10.1 EXPENSES. The
Employer will pay all expenses of administering this Plan that may arise in connection with the Plan. 

  
 7 

 10.2 NO CONTRACT OF EMPLOYMENT. Nothing in this Plan shall be construed to constitute a contract of
employment between an Employer and any Employee or to be an inducement for the employment of any Employee. Nothing contained in this Plan shall be deemed to give any Employee the right to be retained in the service of an Employer or to interfere
with the right of an Employer to discharge any Employee at any time, with or without cause, regardless of the effect which such discharge may have upon him as a Participant of the Plan. 

10.3 ADJUSTMENT UPON CHANGES IN STOCK. The aggregate number of shares of Stock reserved for purchase under the Plan as provided in Section 6.1,
and the calculation of the Exercise Price as provided in Section 6.3, shall be adjusted by the Plan Administrator (subject to direction by the Board of Directors) in an equitable and proportionate manner to reflect changes in the capitalization
of the Company, including, but not limited to, such changes as result from merger, consolidation, reorganization, recapitalization, stock dividend, dividend in property other than cash, stock split, combination of shares, exchange of shares and
change in corporate structure. If any adjustment under this Section 10.3 would create a fractional share of Stock or a right to acquire a fractional share of Stock, such fractional share shall be disregarded and the number of shares available
under the Plan and the number of shares covered under any options granted pursuant to the Plan shall be the next lower number of shares, rounding all fractions downward. 

10.4 EMPLOYER’S RIGHTS. The rights and powers of any Employer shall not be affected in any way by its participation in this Plan, including but
not limited to the right or power of any Employer to make adjustments, reclassifications, reorganizations or changes of its capital or business structure or to merge or to consolidate or to dissolve, liquidate or sell, or transfer all or any part of
its business or assets. 
 10.5 LIMIT ON LIABILITY. No liability whatever shall attach to or be incurred by any past, present or future stockholders,
officers or directors, as such, of the Company or any Employer, under or by reason of any of the terms, conditions or agreements contained in this Plan or implied therefrom, and any and all liabilities of any and all rights and claims against the
Company, an Employer, or any stockholder, officer or director as such, whether arising at common law or in equity or created by statute or constitution or otherwise, pertaining to this Plan, are hereby expressly waived and released by every
Participant as a part of the consideration for any benefits under this Plan; provided, however, no waiver shall occur, solely by reason of this Section 10.5, of any right which is not susceptible to advance waiver under applicable law. 

10.6 GENDER AND NUMBER. For the purposes of the Plan, unless the contrary is clearly indicated, the use of the masculine gender shall include the
feminine, and the singular number shall include the plural and vice versa. 
 10.7 GOVERNING LAW. The validity, construction, interpretation,
administration and effect of this Plan, and any rules or regulations promulgated hereunder, including all rights or privileges of any Participants hereunder, shall be governed exclusively by and in accordance with the laws of the State of Delaware.

 10.8 HEADINGS. Any headings or subheadings in this Plan are inserted for convenience of reference only and are to be ignored in the construction
of any provisions hereof. 
 10.9 SEVERABILITY. If any provision of this Plan is held by a court to be unenforceable or is deemed invalid for any
reason, then such provision shall be deemed inapplicable and omitted, but all other provisions of this Plan shall be deemed valid and enforceable to the full extent possible under applicable law. 

IN WITNESS WHEREOF, the Company has adopted this Plan as of the 20th day of March, 2016, to be effective as of the Effective Date. 

[Signature appears on the next page.] 

  
 8 

 
			
	ENGILITY HOLDINGS, INC.
		
	By:	 	/s/ Thomas O. Miiller
	Name:	 	Thomas O. Miiller
	Title:	 	Senior Vice President, General Counsel and Corporate Secretary

  
 9

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