Portillo's Inc. Employee Stock Purchase Plan

(a)The Plan provides a means by which Eligible Employees and/or Eligible Service Providers of either the Company or a Designated Company may be given an opportunity to purchase Common Stock. The Plan permits the Company to grant a series of Purchase Rights to Eligible Employees and/or Eligible Service Providers.

(b)The Company, by means of the Plan, seeks to retain and assist its Related Corporations or Affiliates in retaining the services of such Eligible Employees and Eligible Service Providers, to secure and retain the services of new Eligible Employees and Eligible Service Providers and to provide incentives for such persons to exert maximum efforts for the success of the Company and its Related Corporations and Affiliates.

(c)The Plan includes two components: a 423 Component and a Non-423 Component. The Company intends (but makes no undertaking or representation to maintain) the 423 Component to qualify as an Employee Stock Purchase Plan. The provisions of the 423 Component, accordingly, will be construed in a manner that is consistent with the requirements of Section 423 of the Code, including without limitation, to extend and limit Plan participation in a uniform and non-discriminating basis. In addition, this Plan authorizes grants of Purchase Rights under the Non-423 Component that do not meet the requirements of an Employee Stock Purchase Plan. Except as otherwise provided in the Plan or determined by the Board, the Non-423 Component will operate and be administered in the same manner as the 423 Component. In addition, the Company may make separate Offerings which vary in terms (provided that such terms are not inconsistent with the provisions of the Plan and, with respect to the 423 Component, the requirements of an Employee Stock Purchase Plan), and the Company will designate which Designated Company is participating in each separate Offering and if any Eligible Service Providers will be eligible to participate in a separate Offering. Eligible Employees will be able to participate in the 423 Component or Non-423 Component of the Plan. Eligible Service Providers will only be able to participate in the Non-423 Component of the Plan.

(d)The Board will administer the Plan unless and until the Board delegates administration of the Plan to a Committee or Committees, as provided in Section 2(c).

(e)The Board will have the power, subject to, and within the limitations of, the express provisions of the Plan:

(i)To determine how and when Purchase Rights will be granted and the provisions of each Offering (which need not be identical).

(ii)To designate from time to time which Related Corporations will be eligible to participate in the Plan as Designated 423 Corporations or as Designated Non-423 Corporations, which Affiliates will be eligible to participate in the Plan as Designated Non-423 Corporations, and which Designated Companies will participate in each separate Offering (to the extent that the Company makes separate Offerings).

(iii)To designate from time to time which persons will be Eligible Service Providers and which Eligible Service Providers will participate in each separate Offering (to the extent that the Company makes separate Offerings).

(iv)To construe and interpret the Plan and Purchase Rights, and to establish, amend and revoke rules and regulations for its administration. The Board, in the exercise of this power, may correct any defect, omission or inconsistency in the Plan, in a manner and to the extent it deems necessary or expedient to make the Plan fully effective.

(v)To settle all controversies regarding the Plan and Purchase Rights granted under the Plan.

(vi)To suspend or terminate the Plan at any time as provided in Section 12.

(vii)To amend the Plan at any time as provided in Section 12.

(viii)Generally, to exercise such powers and to perform such acts as it deems necessary or expedient to promote the best interests of the Company, its Related Corporations, and Affiliates and to carry out the intent that the 423 Component be treated as an Employee Stock Purchase Plan.

(ix)To adopt such rules, procedures and sub-plans relating to the operation and administration of the Plan as are necessary or appropriate under applicable local laws, regulations and procedures to permit or facilitate participation in the Plan by Employees or Eligible Service Providers who are non-U.S. nationals or employed or providing services or located or otherwise subject to the laws of a jurisdiction outside the United States. Without limiting the generality of, but consistent with, the foregoing, the Board specifically is authorized to adopt rules, procedures, and sub-plans, which, for purposes of the Non-423 Component, may be beyond the scope of Section 423 of the Code, regarding, without limitation, eligibility to participate in the Plan, handling and making of Contributions, establishment of bank or trust accounts to hold Contributions, payment of interest, conversion of local currency, obligations to pay payroll tax, determination of beneficiary designation requirements, withholding procedures and handling of stock issuances, any of which may vary according to applicable requirements.

(f)The Board may delegate some or all of the administration of the Plan to a Committee or Committees. If administration is delegated to a Committee, the Committee will have, in connection with the administration of the Plan, the powers theretofore possessed by the Board that have been delegated to the Committee, including the power to delegate to a subcommittee any of the administrative powers the Committee is authorized to exercise (and references in this Plan to the Board will thereafter be to the Committee or subcommittee), subject, however, to such resolutions, not inconsistent with the provisions of the Plan, as may be adopted from time to time by the Board. The Board may retain the authority to concurrently administer the Plan with the Committee and may, at any time, revest in the Board some or all of the powers previously delegated. Whether or not the Board has delegated administration of the Plan to a Committee, the Board will have the final power to determine all questions of policy and expediency that may arise in the administration of the Plan.

(g)All determinations, interpretations and constructions made by the Board in good faith will not be subject to review by any person and will be final, binding and conclusive on all persons.

(h)Subject to the provisions of Section 11(a) relating to Capitalization Adjustments and Section 3(b), the maximum number of shares of Common Stock that may be issued under the Plan will not exceed 250,000 shares of Common Stock. For the avoidance of doubt, up to the maximum number of shares of Common Stock reserved under this Section 3(a) may be used to satisfy purchases of Common Stock under the 423 Component and any remaining portion of such maximum number of shares may be used to satisfy purchases of Common Stock under the Non-423 Component.

(i)If any Purchase Right granted under the Plan terminates without having been exercised in full, the shares of Common Stock not purchased under such Purchase Right will again become available for issuance under the Plan.

(j)The stock purchasable under the Plan will be shares of authorized but unissued or reacquired shares of Common Stock, including shares repurchased by the Company on the open market.

(k)Any sub-plan adopted pursuant to Section 2(b)(ix) of the Plan shall be subject to the limits on shares of Common Stock under the Plan (inclusive of any adjustments), and shall be subject to the same share recycling provisions as the Plan (relating to purchase rights granted that terminate without having been exercised in full).

(l)The Board may from time to time grant or provide for the grant of Purchase Rights to Eligible Employees and/or Eligible Service Providers under an Offering (consisting of one or more Purchase Periods) on an Offering Date or Offering Dates selected by the Board. Each Offering will be in such form and will contain such terms and conditions as the Board will deem appropriate, and, with respect to the 423 Component, will comply with the requirement of Section 423(b)(5) of the Code that all Employees granted Purchase Rights will have the same rights and privileges. The terms and conditions of an Offering will be incorporated by reference into the Plan and treated as part of the Plan. The provisions of separate Offerings need not be identical, but each Offering will include (through incorporation of the provisions of this Plan by reference in the Offering Document or otherwise) the period during which the Offering will be effective, which period will not exceed 27 months beginning with the Offering Date, and the substance of the provisions contained in Sections 5 through 8, inclusive.

(m)If a Participant has more than one Purchase Right outstanding under the Plan, unless he or she otherwise indicates in forms delivered to the Company: (i) each form will apply to all of his or her Purchase Rights under the Plan, and (ii) a Purchase Right with a lower exercise price (or an earlier-granted Purchase Right, if different Purchase Rights have identical exercise prices) will be exercised to the fullest possible extent before a Purchase Right with a higher exercise price (or a later-granted Purchase Right if different Purchase Rights have identical exercise prices) will be exercised.

(n)The Board will have the discretion to structure an Offering so that if the Fair Market Value of a share of Common Stock on the first Trading Day of a new Purchase Period within that Offering is less than or equal to the Fair Market Value of a share of Common Stock on the Offering Date for that Offering, then (i) that Offering will terminate immediately as of that first Trading Day, and (ii) the Participants in such terminated Offering will be automatically enrolled in a new Offering beginning on the first Trading Day of such new Offering Period and Purchase Period.

(o)Purchase Rights may be granted only to Employees of the Company or, as the Board may designate in accordance with Section 2(b), to Employees of a Related Corporation or, solely with respect to the Non-423 Component, Employees of an Affiliate or Eligible Service Providers.

(p)The Board may provide that Employees will not be eligible to be granted Purchase Rights under the Plan if, on the Offering Date, the Employee (i) has not completed at least 12 continuous months of service since the Employee’s last hire date (or such lesser period of time as may be determined by the Board in its discretion), (ii) customarily works not more than 20 hours per (or such lesser period of time as may be determined by the Board in its discretion), (iv) is an Officer, (v) is a highly compensated employee within the meaning of Section 423(b)(4)(D) of the Code, or (vi) has not satisfied such other criteria as the Board may determine consistent with Section 423 of the Code. Unless otherwise determined by the Board for any Offering Period, an Employee will not be eligible to be granted Purchase Rights unless, on the Offering Date, the Employee customarily works more than 20 hours per week, and has been employed by the Company, a Related Corporation, or an Affiliate, as the case may be, for at least 12 continuous months preceding such Offering Date.

(q)With respect to the 423 Component, no Employee will be eligible for the grant of any Purchase Rights if, immediately after any such Purchase Rights are granted, such Employee owns stock possessing five percent or more of the total combined voting power or value of all classes of stock of the Company or of any Related Corporation. For purposes of this Section 5(c), the rules of Section 424(d) of the Code will apply in determining the stock ownership of any Employee, and common stock which such Employee may purchase under all outstanding Purchase Rights and options will be treated as stock owned by such Employee.

(r)As specified by Section 423(b)(8) of the Code, an Eligible Employee may be granted Purchase Rights only if such Purchase Rights, together with any other rights granted under all Employee Stock Purchase Plans of the Company and any Related Corporations, do not permit such Eligible Employee’s rights to purchase stock of the Company or any Related Corporation to accrue at a rate which, when aggregated, exceeds U.S. $25,000 of Fair Market Value of such stock (determined at the time such rights are granted, and which, with respect to the Plan, will be determined as of their respective Offering Dates) for each calendar year in which such rights are outstanding at any time.

(s)An Eligible Service Provider will not be eligible to be granted Purchase Rights unless the Eligible Service Provider is providing bonafide services to the Company or a Designated Company on the applicable Offering Date.

(t)Notwithstanding anything set forth herein except for Section 5(e) above, the Board may establish additional eligibility requirements, or fewer eligibility requirements, for Employees and/or Eligible Service Providers with respect to Offerings made under the Non-423 Component even if such requirements are not consistent with Section 423 of the Code.     

(u)On each Offering Date, each Eligible Employee or Eligible Service Provider, pursuant to an Offering made under the Plan, will be granted a Purchase Right to purchase up to that number of shares of Common Stock (rounded down to the nearest whole share) purchasable either with a percentage or with a maximum dollar amount, as designated by the Board; provided however, that in the case of Eligible Employees, such percentage or maximum dollar amount will in either case not exceed 15% of such Employee’s earnings (as defined by the Board in each Offering) during the period that begins on the Offering Date (or

such later date as the Board determines for a particular Offering) and ends on the date stated in the Offering, which date will be no later than the end of the Offering, unless otherwise provided for in an Offering.

(v)The Board will establish one or more Purchase Dates during an Offering on which Purchase Rights granted for that Offering will be exercised and shares of Common Stock will be purchased in accordance with such Offering.

(w)In connection with each Offering made under the Plan, the Board may specify (i) a maximum number of shares of Common Stock that may be purchased by any Participant on any Purchase Date during such Offering, (ii) a maximum aggregate number of shares of Common Stock that may be purchased by all Participants pursuant to such Offering, and (iii) a maximum aggregate number of shares of Common Stock that may be purchased by all Participants on any Purchase Date under the Offering. If the aggregate purchase of shares of Common Stock issuable on exercise of Purchase Rights granted under the Offering would exceed any such maximum aggregate number, then, in the absence of any Board action otherwise, a pro rata (based on each Participant’s accumulated Contributions) allocation of the shares of Common Stock (rounded down to the nearest whole share) available will be made in as nearly a uniform manner as will be practicable and equitable.

(x)The purchase price of shares of Common Stock acquired pursuant to Purchase Rights will be not less than the lesser of (but in no event lower than the par value per share of Common Stock):

(i)an amount equal to 95% of the Fair Market Value of the shares of Common Stock on the Offering Date; or

(ii)an amount equal to 95% of the Fair Market Value of the shares of Common Stock on the applicable Purchase Date;

provided, however, that the Committee may determine a different purchase price per share of Common Stock (but in no event lower than the par value per share of Common Stock) so long as such per share purchase price is communicated to Participants prior to the beginning of the Offerning Period and such per share purchase price is not less than the lesser of (i) an amount equal to 85% of the Fair Market Value of the shares of Common Stock on the Offering Date or (ii) an amount equal to 85% of the Fair Market Value of the shares of Common Stock on the applicable Purchase Date.

(a)An Eligible Employee may elect to authorize payroll deductions as the means of making Contributions by completing the enrollment process defined by the Company, within the time specified by the Company, or any third party designated by the Company (each, a “Company Designee”). The enrollment process will specify the amount of Contributions, which shall not be less than 1% of such Employee’s earning (as defined by the Board in each Offering) and shall not exceed the maximum amount specified by the Board. Each Participant’s Contributions will be credited to a bookkeeping account for such Participant under the Plan and will be deposited with the general funds of the Company except where applicable laws or regulations require that Contributions be deposited with a Company Designee or otherwise be segregated.

(b)If permitted in the Offering, a Participant may begin Contributions with the first payroll or payment date occurring on or after the Offering Date (or, in the case of a payroll date or payment date that occurs after the end of the prior Offering but before the

Offering Date of the next new Offering, Contributions from such payroll or payment will be included in the new Offering) or on such other date as set forth in the Offering. If permitted in the Offering, a Participant may thereafter reduce (including to zero) or increase his or her Contributions. If required under applicable laws or regulations or if specifically provided in the Offering, in addition to or instead of making Contributions by payroll deductions, a Participant may make Contributions through a payment by cash, check, or wire transfer prior to a Purchase Date, in a manner directed by the Company or a Company Designee.

(c)During an Offering, a Participant may cease making Contributions and withdraw from the Offering by completing the withdrawal process defined by the Company or a Company Designee. The Company may impose a deadline before a Purchase Date for withdrawing. On such withdrawal, such Participant’s Purchase Right in that Offering will immediately terminate and the Company will distribute as soon as practicable to such Participant all of his or her accumulated but unused Contributions without interest and such Participant’s Purchase Right in that Offering will then terminate. A Participant’s withdrawal from that Offering will have no effect on his or her eligibility to participate in any other Offerings under the Plan, but such Participant will be required to re-enroll to participate in subsequent Offerings.

(d)Purchase Rights granted pursuant to any Offering under the Plan will terminate immediately if the Participant either (i) is no longer an Eligible Employee or Eligible Service Provider for any reason or for no reason, or (ii) is otherwise no longer eligible to participate. The Company shall have the exclusive discretion to determine when Participant is no longer actively providing services and the date of the termination of employment or service for purposes of the Plan. As soon as practicable, the Company will distribute to such individual all of his or her accumulated but unused Contributions without interest.

(e)During a Participant’s lifetime, Purchase Rights will be exercisable only by such Participant. Purchase Rights are not transferable by a Participant, except by will, by the laws of descent and distribution, or, if permitted by the Company, by a beneficiary designation as described in Section 10.

(f)Unless otherwise specified in the Offering or required by applicable laws, the Company will have no obligation to pay interest on Contributions.

(a)On each Purchase Date, each Participant’s accumulated Contributions will be applied to the purchase of shares of Common Stock (rounded down to the nearest whole share), up to the maximum number of shares of Common Stock permitted by the Plan and the applicable Offering, at the purchase price specified in the Offering. No fractional shares will be issued unless specifically provided for in the Offering.

(b)Unless otherwise provided in the Offering, if any amount of accumulated Contributions remains in a Participant’s account after the purchase of shares of Common Stock on the final Purchase Date in an Offering, then such remaining amount will roll over to the next Offering.

(c)No Purchase Rights may be exercised to any extent unless the shares of Common Stock to be issued on such exercise under the Plan are covered by an effective registration statement pursuant to the Securities Act and the Plan is in material compliance with all applicable U.S. federal and state, non-U.S. and other securities, exchange control and other laws applicable to the Plan. If on a Purchase Date the shares of Common Stock are not so registered or the Plan is not in such compliance, no Purchase Rights will be exercised on such

Purchase Date, and the Purchase Date will be delayed until the shares of Common Stock are subject to such an effective registration statement and the Plan is in material compliance, except that the Purchase Date will in no event be more than three (3) months from the original Purchase Date. If, on the Purchase Date, as delayed to the maximum extent permissible, the shares of Common Stock are not registered and the Plan is not in material compliance with all applicable laws or regulations, as determined by the Company in its sole discretion, no Purchase Rights will be exercised and all accumulated but unused Contributions will be distributed as soon as practicable to the Participants without interest.

9.Covenants of the Company. The Company will seek to obtain from each U.S. federal or state, non-U.S. or other regulatory commission or agency having jurisdiction over the Plan such authority as may be required to grant Purchase Rights and issue and sell shares of Common Stock thereunder unless the Company determines, in its sole discretion, that doing so would cause the Company to incur costs that are unreasonable. If, after commercially reasonable efforts, the Company is unable to obtain the authority that counsel for the Company deems necessary for the grant of Purchase Rights or the lawful issuance and sale of Common Stock under the Plan, and at a commercially reasonable cost, the Company will be relieved from any liability for failure to grant Purchase Rights or to issue and sell Common Stock on exercise of such Purchase Rights.

(g)The Company may, but is not obligated to, permit a Participant to submit a form designating any beneficiary or beneficiaries who will receive any shares of Common Stock or Contributions from the Participant’s account under the Plan if the Participant dies before such shares of Common Stock or Contributions are delivered to the Participant. The Company may, but is not obligated to, permit the Participant to change such designation of beneficiary. Each such designation shall revoke all prior designations by the same Participant and will be effective only when filed by the Participant in writing (on a form approved by the Company or as approved by the Company for use by a Company Designee) with the Company during the Participant’s lifetime.

(h)In the absence of a valid designation as provided in Section 10(a) above, if no validly designated beneficiary survives the Participant or if each surviving validly designated beneficiary is legally impaired or prohibited from receiving any shares of Common Stock or Contributions, the Participant’s beneficiary shall be the legatee or legatees designated under the Participant’s last will or by such Participant’s executors, personal representatives or distributees of such shares of Common Stock or Contributions in accordance with the Participant’s will or the laws of descent and distribution. If no executor or administrator has been appointed (to the knowledge of the Company), the Company, in its sole discretion, may deliver such shares of Common Stock and Contributions, without interest, to the Participant’s spouse, dependents or relatives, or if no spouse, dependent or relative is known to the Company, then to such other person as the Company may designate. Any transfer permitted under this Section 10 shall be for no consideration.

(a)In the event of a Capitalization Adjustment, the Board will appropriately and proportionately adjust: (i) the class(es) and maximum number of securities subject to the Plan pursuant to Section 3(a), (ii) the class(es) and number of securities subject to, and the purchase price applicable to outstanding Offerings and Purchase Rights, and (iii) the class(es) and number of securities that are the subject of the purchase limits under each ongoing Offering. The Board will make these adjustments, and its determination will be final, binding, and conclusive.

(b)In the event of a dissolution or liquidation of the Company, the Board will shorten any Offering then in progress by setting a New Purchase Date prior to the consummation of such proposed dissolution or liquidation. The Board will notify each Participant in writing, prior to the New Purchase Date that the Purchase Date for the Participant’s Purchase Rights has been changed to the New Purchase Date and that such Purchase Rights will be automatically exercised on the New Purchase Date, unless prior to such date the Participant has withdrawn from the Offering as provided in Section 7.

(c)In the event of a Change in Control, then: (i) any surviving corporation or acquiring corporation (or the surviving or acquiring corporation’s parent company) may assume or continue outstanding Purchase Rights or may substitute similar rights (including a right to acquire the same consideration paid to the stockholders in the Change in Control) for outstanding Purchase Rights, or (ii) if any surviving or acquiring corporation (or its parent company) does not assume or continue such Purchase Rights or does not substitute similar rights for such Purchase Rights, then the Participants’ accumulated Contributions will be used to purchase shares of Common Stock (rounded down to the nearest whole share) prior to the Change in Control under the outstanding Purchase Rights (with such actual date to be determined by the Board in its sole discretion), and the Purchase Rights will terminate immediately after such purchase. The Board will notify each Participant in writing, prior to the New Purchase Date that the Purchase Date for the Participant’s Purchase Rights has been changed to the New Purchase Date and that such Purchase Rights will be automatically exercised on the New Purchase Date, unless prior to such date the Participant has withdrawn from the Offering as provided in Section 7.

(i)The Board may amend the Plan at any time in any respect the Board deems necessary or advisable. However, except as provided in Section 11(a) relating to Capitalization Adjustments, stockholder approval will be required for any amendment of the Plan for which stockholder approval is required by applicable laws, regulations or listing requirements, including any amendment that either (i) increases the number of shares of Common Stock available for issuance under the Plan, (ii) expands the class of individuals eligible to become Participants and receive Purchase Rights, (iii) materially increases the benefits accruing to Participants under the Plan or reduces the price at which shares of Common Stock may be purchased under the Plan, (iv) extends the term of the Plan, or (v) expands the types of awards available for issuance under the Plan, but in each of (i) through (v) above only to the extent stockholder approval is required by applicable laws, regulations, or listing requirements.

(j)The Board may suspend or terminate the Plan at any time. No Purchase Rights may be granted under the Plan while the Plan is suspended or after it is terminated.

(k)Any benefits, privileges, entitlements, and obligations under any outstanding Purchase Rights granted before an amendment, suspension, or termination of the Plan will not be materially impaired by any such amendment, suspension, or termination except (i) with the consent of the person to whom such Purchase Rights were granted, (ii) as necessary to comply with any laws, listing requirements, or governmental regulations (including, without limitation, the provisions of Section 423 of the Code and the regulations and other interpretive guidance issued thereunder relating to Employee Stock Purchase Plans) including without limitation any such regulations or other guidance that may be issued or amended after the date the Plan is adopted by the Board, or (iii) as necessary to obtain or maintain any special tax, listing, or regulatory treatment. To be clear, the Board may amend outstanding Purchase Rights without a Participant’s consent if such amendment is necessary to

ensure that the Purchase Right or the 423 Component complies with the requirements of Section 423 of the Code.

(d)Purchase Rights granted under the 423 Component are intended to be exempt from the application of Section 409A of the Code. Purchase Rights granted under the Non-423 Component to U.S. taxpayers are intended to be exempt from the application of Section 409A of the Code under the short-term deferral exception and any ambiguities will be construed and interpreted in accordance with such intent. Subject to Section 13(b) below, Purchase Rights granted to U.S. taxpayers under the Non-423 Component will be subject to such terms and conditions that will permit such Purchase Rights to satisfy the requirements of the short-term deferral exception or other exemption available under Section 409A of the Code, including the requirement that the shares subject to a Purchase Right be delivered within the short-term deferral period. Subject to Section 13(b) below, in the case of a Participant who would otherwise be subject to Section 409A of the Code, to the extent the Board determines that a Purchase Right or the exercise, payment, settlement, or deferral thereof is subject to Section 409A of the Code, the Purchase Right will be granted, exercised, paid, settled, or deferred in a manner that will comply with Section 409A of the Code, including U.S. Department of Treasury regulations and other interpretive guidance issued thereunder, including, without limitation, any such regulations or other guidance that may be issued after the adoption of the Plan. Notwithstanding the foregoing, in no event whatsoever shall the Company be liable for any additional tax, interest or penalties that may be imposed on a Participant by Section 409A of the Code or any damages for failing to comply with Section 409A of the Code.

(e)Purchase Rights are intended to be exempt from the application of Section 457A of the Code. In the event that the Committee determines that Purchase Rights may be subject to Section 457A of the Code, the Committee may, in its sole discretion and without a Participant’s prior consent, amend the Plan and/or adopt policies and procedures, or take any other actions (including amendments, policies, procedures and actions with retroactive effect) as are necessary or appropriate to (i) exempt the Plan and/or any Purchase Right from the application of Section 457A, (ii) preserve the intended tax treatment of any such Purchase Right, or (iii) comply with the requirements of Section 457A, including without limitation any such regulations, guidance, compliance programs and other interpretative authority that may be issued after the date of the grant. To the extent that a Purchase Right constitutes deferred compensation subject to Section 457A, such Purchase Right will be subject to taxation in accordance with Section 457A. Notwithstanding the foregoing, in no event whatsoever shall the Company be liable for any additional tax, interest or penalties that may be imposed on a Participant by Section 457A of the Code or any damages for failing to comply with Section 457A of the Code.

(f)Although the Company may endeavor to (i) qualify a Purchase Right for special tax treatment under the laws of the United States or jurisdictions outside of the United States, or (ii) avoid adverse tax treatment (e.g., under Section 409A or Section 457A of the Code), the Company makes no representation to that effect and expressly disavows any covenant to maintain special or to avoid unfavorable tax treatment, notwithstanding anything to the contrary in this Plan, including Section 13(a) above. The Company will be unconstrained in its corporate activities without regard to the potential negative tax impact on Participants under the Plan.

14.Effective Date of Plan. The Plan will become effective on the Effective Date. No Purchase Rights will be exercised unless and until the Plan has been approved by the

stockholders of the Company, which approval must be within 12 months before or after the date the Plan is adopted (or, if required under Section 12(a) above, amended) by the Board.

(l)Proceeds from the sale of shares of Common Stock pursuant to Purchase Rights will constitute general funds of the Company.

(m)A Participant will not be deemed to be the holder of, or to have any of the rights of a holder with respect to, shares of Common Stock subject to Purchase Rights unless and until the Participant’s shares of Common Stock acquired on exercise of Purchase Rights are recorded in the books of the Company (or its transfer agent).

(n)The Plan and Offerings do not constitute an employment or service contract. Nothing in the Plan or in the Offerings will in any way alter the at-will nature of a Participant’s employment, if applicable, or be deemed to create in any way whatsoever any obligation on the part of any Participant to continue his or her employment or service relationship with the Company, a Related Corporation, or an Affiliate, or on the part of the Company, a Related Corporation, or an Affiliate to continue the employment or service of a Participant.

(o)The provisions of the Plan will be governed by the laws of the State of Delaware.

(p)If any particular provision of the Plan is found to be invalid or otherwise unenforceable, such provision will not affect the other provisions of the Plan, but the Plan will be construed in all respects as if such invalid provision were omitted.

(q)If any provision of the Plan does not comply with applicable laws or regulations, such provision will be construed in such a manner as to comply with applicable laws or regulations.

16.Definitions. As used in the Plan, the following definitions will apply to the capitalized terms indicated below:

(a)“423 Component” means the part of the Plan, which excludes the Non-423 Component, pursuant to which Purchase Rights that satisfy the requirements for an Employee Stock Purchase Plan may be granted to Eligible Employees.

(b)“Affiliate” means any entity, other than a Related Corporation, in which the Company has an equity or other ownership interest or that is directly or indirectly controlled by, controls, or is under common control with the Company, in all cases, as determined by the Committee.

(c)“Board” means the Board of Directors of the Company.

(d)“Capitalization Adjustment” means, with respect to the Common Stock subject to the Plan or subject to any Purchase Right after the date the Plan is adopted by the Board, a stock split, reverse stock split, stock dividend, combination, consolidation, recapitalization (including a recapitalization through a large nonrecurring cash dividend) or reclassification of the Common Stock, subdivision of the Common Stock, a rights offering, a reorganization, amalgamation, merger, scheme of arrangement, spin-off, split-up, repurchase, or exchange of Common Stock or other securities of the Company or other significant corporate transaction, or other change affecting the Common Stock occurs.

(e)“Change in Control” means, and shall occur, if:

(i)any Person (other than the Company, any trustee or other fiduciary holding securities under any employee benefit plan of the Company, or any company owned, directly or indirectly, by the stockholders of the Company in substantially the same proportions as their ownership of shares of Common Stock), is or becomes the “beneficial owner” (as defined in Rule 13d-3 under the Exchange Act), directly or indirectly, of securities of the Company representing more than 50% of the combined voting power of the Company’s then outstanding securities;

(ii) during any period of two consecutive years (the “Board Measurement Period”) individuals who at the beginning of such period constitute the Board and any new director (other than a director designated by a Person who has entered into an agreement with the Company to effect a transaction described in paragraph (i), (iii), or (iv) of this definition, or a director initially elected or nominated as a result of an actual or threatened election contest with respect to directors or as a result of any other actual or threatened solicitation of proxies by or on behalf of any Person other than the Board) whose election by the Board or nomination for election by the Company’s stockholders was approved by a vote of at least two-thirds of the directors then still in office who either were directors at the beginning of the Board Measurement Period or whose election or nomination for election was previously so approved, cease for any reason to constitute at least a majority of the Board;

(iii)a merger or consolidation of the Company with any other entity, other than a merger or consolidation which would result in the voting securities of the Company outstanding immediately prior thereto continuing to represent (either by remaining outstanding or by being converted into voting securities of the surviving entity) more than 50% of the combined voting power of the voting securities of the Company or such surviving entity (or, as applicable, a direct or indirect parent of the Company or such suriving entity) outstanding immediately after such merger or consolidation; provided, however, that a merger or consolidation effected to implement a recapitalization of the Company (or similar transaction) in which no Person (other than those covered by the exceptions in (i) above) acquires more than 50% of the combined voting power of the Company’s then outstanding securities shall not constitute a Change in Control of the Company; or

(iv)the consummation of the sale or disposition by the Company of all or substantially all of the Company’s assets that has been approved by the stockholders of the Company other than (x) the sale or disposition of all or substantially all of the assets of the Company to a Person or Persons who beneficially own, directly or indirectly, more than 50% of the combined voting power of the outstanding voting securities of the Company at the time of the sale or disposition or (y) pursuant to a spinoff type transaction, directly or indirectly, of such assets to the stockholders of the Company.

Notwithstanding the foregoing, to the extent necessary to comply with Section 409A of the Code with respect to the payment of “nonqualified deferred compensation,” “Change in Control” shall be limited to a “change in control event” as defined under Section 409A of the Code.

(r)“Code” means the U.S. Internal Revenue Code of 1986, as amended, including any applicable regulations and guidance thereunder. 

(s)“Committee” means (i) the Compensation Committee of the Board, (ii) such other committee of no fewer than two members of the Board who are appointed by the Board to administer the Plan or (iii) the Board, as determined by the Board.

(t)“Common Stock” means the Class A common shares of the Company, par value $0.01 per share (and any shares or other securities into which such Common Stock may be converted or into which it may be exchanged).

(u)“Company” means Portillo’s Inc., a corporation organized and existing under the laws of the State of Delaware, or any successor thereto.

(v)“Contributions” means the payroll deductions or other payments specifically provided for in the Offering that a Participant contributes to fund the exercise of a Purchase Right. A Participant may make additional payments into his or her account if specifically provided for in the Offering, and then only if the Participant has not already contributed the maximum permitted amount of payroll deductions and other payments during the Offering.

(w)“Designated 423 Corporation” means any Related Corporation selected by the Board as participating in the 423 Component.

(x)“Designated Company” means any Designated Non-423 Corporation or Designated 423 Corporation, provided, however, that at any given time, a Related Corporation participating in the 423 Component will not be a Related Corporation participating in the Non-423 Component.

(y) “Designated Non-423 Corporation” means any Related Corporation or Affiliate selected by the Board as participating in the Non-423 Component.

(z)“Director” means a member of the Board.

(aa)“Effective Date” means means the earlier to occur of (i) adoption by the Board and (ii) approval by the shareholders of the Company.

(ab)“Eligible Employee” means an Employee who meets the requirements set forth in the document(s) governing the Offering for eligibility to participate in the Offering, provided that such Employee also meets the requirements for eligibility to participate set forth in the Plan. For purposes of the Plan, the employment relationship will be treated as continuing intact while the Employee is on sick leave or other leave of absence approved by the Company or a Related Corporation or Affiliate that directly employs the Employee. Where the period of leave exceeds three (3) months and the Employee’s right to reemployment is not guaranteed either by statute or by contract, the employment relationship will be deemed to have terminated three months and one day following the commencement of such leave.

(ac)“Eligible Service Provider” means a natural person other than an Employee or Director who (i) is designated by the Committee to be an “Eligible Service Provider,” (ii) provides bonafide services to the Company or a Related Corporation, (iii) is not a U.S. taxpayer and (iv) meets the requirements set forth in the document(s) governing the Offering for eligibility to participate in the Offering, provided that such person also meets the requirements for eligibility to participate set forth in the Plan.

(ad)“Employee” means any person, including an Officer or Director, who is treated as an employee in the records of the Company or a Related Corporation or Affiliate. However, service solely as a Director, or payment of a fee for such services, will not cause a Director to be considered an “Employee” for purposes of the Plan.

(ae)“Employee Stock Purchase Plan” means a plan that grants Purchase Rights intended to be options issued under an “employee stock purchase plan,” as that term is defined in Section 423(b) of the Code.

(af)“Exchange Act” means the U.S. Securities Exchange Act of 1934, as amended and the rules and regulations promulgated thereunder, as the same may be amended from time to time.

(ag)“Fair Market Value” means, as applied to a specific date, the price of a share of Common Stock that is based on the opening, closing, actual, high, low or average selling prices of a share of Common Stock reported on any established stock exchange or national market system including without limitation the National Association of Securities Dealers, Inc. Automated Quotation System, the New York Stock Exchange and the National Market System on the applicable date, the preceding trading day, the next succeeding trading day, or an average of trading days, as determined by the Committee in its discretion. Unless the Committee determines otherwise, Fair Market Value shall be deemed to be equal to the closing price of a share of Common Stock on the date as of which Fair Market Value is to be determined, or if shares of Common Stock are not publicly traded on such date, as of the most recent date on which shares of Common Stock were publicly traded. Notwithstanding the foregoing, if the Common Stock is not traded on any established stock exchange or national market system, the Fair Market Value means the price of a share of Common Stock as established by the Committee.

(ah)“New Purchase Date” means a new Purchase Date set by shortening any Offering then in progress.

(ai)“Non-423 Component” means the part of the Plan, which excludes the 423 Component, pursuant to which Purchase Rights that are not intended to satisfy the requirements for an Employee Stock Purchase Plan may be granted to Eligible Employees and Eligible Service Providers.

(aj)“Offering” means the grant to Eligible Employees or Eligible Service Providers of Purchase Rights, with the exercise of those Purchase Rights automatically occurring at the end of one or more Purchase Periods. The terms and conditions of an Offering will generally be set forth in the “Offering Document” approved by the Board for that Offering.

(ak)“Offering Date” means a date selected by the Board for an Offering to commence.

(al)“Offering Period” means a period with respect to which the right to purchase Common Stock may be granted under the Plan, as determined by the Board pursuant to the Plan.

(am)“Officer” means a person who is an officer of the Company or a Related Corporation or Affiliate within the meaning of Section 16 of the Exchange Act.

(an)“Participant” means an Eligible Employee or Eligible Service Provider who holds an outstanding Purchase Right.

(ao)“Plan” means this Portillo’s Inc., 2022 Employee Stock Purchase Plan, including both the 423 Component and the Non-423 Component, as amended from time to time.

(ap)“Purchase Date” means one or more dates during an Offering selected by the Board on which Purchase Rights will be exercised and on which purchases of shares of Common Stock will be carried out in accordance with such Offering.

(aq)“Purchase Period” means a period of time specified within an Offering, generally beginning on the Offering Date or on the first Trading Day following an Offering Date, and ending on a Purchase Date. An Offering may consist of one or more Purchase Periods.

(ar)“Purchase Right” means an option to purchase shares of Common Stock granted pursuant to the Plan.

(as)“Related Corporation” means any “parent corporation” or “subsidiary corporation” of the Company whether now or subsequently established, as those terms are defined in Sections 424(e) and (f), respectively, of the Code.

(at)“Securities Act” means the U.S. Securities Act of 1933, as amended.

(au)“Trading Day” means any day on which the exchange or market on which shares of Common Stock are listed is open for trading.