Document:

EX-10.14

 Exhibit 10.14 

GELESIS, INC. 

2015 Equity Incentive Plan 
  

	1.	Purpose 

 The purpose of this 2015 Equity Incentive Plan (the “Plan”) of
Gelesis, Inc., a Delaware corporation (the “Company”), is to advance the interests of the Company’s stockholders by enhancing the Company’s ability to attract, retain and motivate persons who are expected to make
important contributions to the Company and by providing such persons with equity ownership opportunities and performance-based incentives that are intended to better align the interests of such persons with those of the Company’s
stockholders. Except where the context otherwise requires, the term “Company” shall include any of the Company’s present or future parent or subsidiary corporations as defined in Sections 424(e) or (f) of the
Internal Revenue Code of 1986, as amended, and any regulations thereunder (the “Code”) and any other business venture (including, without limitation, joint venture or limited liability company) in which the Company has a controlling
interest, as determined by the Board of Directors of the Company (the “Board”). 
  

	2.	Eligibility 

 All of the Company’s employees, officers and directors, as well as
consultants and advisors to the Company (as such terms consultants and advisors are defined and interpreted for purposes of Form S-8 under the Securities Act of 1933, as amended (the “Securities Act”), or any successor form)
are eligible to be granted Awards under the Plan. Each person who is granted an Award under the Plan is deemed a “Participant.” “Award” means Options (as defined in Section 5), SARs (as defined in
Section 6), Restricted Stock (as defined in Section 7), Restricted Stock Units (as defined in Section 7) and Other Stock-Based Awards (as defined in Section 8) and Cash-Based Awards (as defined in Section 8). 

 

	3.	Administration and Delegation 

 (a) Administration by Board of Directors. The
Plan will be administered by the Board. The Board shall have authority to grant Awards and to adopt, amend and repeal such administrative rules, guidelines and practices relating to the Plan as it shall deem advisable. The Board may
construe and interpret the terms of the Plan and any Award certificate or agreements entered into under the Plan. The Board may correct any defect, supply any omission or reconcile any inconsistency in the Plan or any Award in the manner and to
the extent it shall deem expedient, and it shall be the sole and final judge of such expediency. All decisions by the Board shall be made in the Board’s sole discretion and shall be final and binding on all persons having or claiming any
interest in the Plan or in any Award. 

 (b) Appointment of Committees. To the extent permitted by applicable law, the Board
may delegate any or all of its powers under the Plan to one or more committees or subcommittees of the Board (a “Committee”). All references in the Plan to the “Board” shall mean the Board or a Committee of the
Board or the officers referred to in Section 3(c) to the extent that the Board’s powers or authority under the Plan have been delegated to such Committee or officers. 

(c) Delegation to Officers. To the extent permitted by applicable law, the Board may delegate to one or more officers of the
Company the power to grant Options and other Awards that constitute rights under Delaware law (subject to any limitations under the Plan) to employees or officers of the Company and to exercise such other powers under the Plan as the Board may
determine, provided that the Board shall fix the terms of such Awards to be granted by such officers (including the exercise price of such Awards, which may include a formula by which the exercise price will be determined) and the maximum
number of shares subject to such Awards that the officers may grant; provided further, however, that no officer shall be authorized to grant such Awards to any “executive officer” of the Company (as defined by Rule 3b-7 under
the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) or to any “officer” of the Company (as defined by Rule 16a-1 under the Exchange Act). The Board may not delegate authority under this
Section 3(c) to grant Restricted Stock, unless Delaware law then permits such delegation. 
  

	4.	Stock Available for Awards 

 (a) Number of Shares; Share Counting. 

(1) Authorized Number of Shares. Subject to adjustment under Section 9, Awards may be made under the Plan (any or all of which
Awards may be in the form of Incentive Stock Options, as defined in Section 5(b)) for up to such number of shares of common stock, par value $0.0001 per share, of the Company (the “Common Stock”) as is equal to the sum of: 

(A) 1,678,664 shares of Common Stock; plus 

(B) up to 75,767 additional shares of Common Stock derived from the number of shares of Common Stock reserved for issuance under the
Company’s 2006 Stock Incentive Plan, as amended to date (the “2006 Plan”) and not yet issued or reserved for issue upon exercise of options outstanding upon the closing of the Company’s initial public offering; plus 

(C) an annual increase to be added on the first day of each fiscal year beginning with the fiscal year ending December 31, 2015, and on
each anniversary thereof until the expiration of the Plan equal to the LESSER of (i) 3% of the outstanding shares on such date, (ii) 687,4391 shares of Common Stock, or
(iii) an amount determined by the Board. 
  

	1 	This amount is equal to 5% of 13,748,785, which represents the number of shares of the Company’s common stock expected to be outstanding after the closing of the Company’s initial public offering as reflected
in the Company’s Registration Statement on Form S-1. 

  
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 Shares issued under the Plan may consist in whole or in part of authorized but unissued shares or treasury
shares. 
 (2) Share Counting. For purposes of counting the number of shares available for the grant of Awards under the Plan:

 (A) all shares of Common Stock covered by SARs shall be counted against the number of shares available for the grant of Awards under the
Plan; provided, however, that (i) SARs that may be settled only in cash shall not be so counted and (ii) if the Company grants an SAR in tandem with an Option for the same number of shares of Common Stock and provides that only
one such Award may be exercised (a “Tandem SAR”), only the shares covered by the Option, and not the shares covered by the Tandem SAR, shall be so counted, and the expiration of one in connection with the other’s exercise will
not restore shares to the Plan; 
 (B) if any Award under the Plan or the 2006 Plan (i) expires or is terminated, surrendered or
canceled without having been fully exercised or is forfeited in whole or in part (including as the result of shares of Common Stock subject to such Award being repurchased by the Company at the original issuance price pursuant to a contractual
repurchase right) or (ii) results in any Common Stock not being issued (including as a result of an SAR that was settleable either in cash or in stock actually being settled in cash), the unused Common Stock covered by such Award shall again be
available for the grant of Awards under the Plan; provided, however, that (1) in the case of Incentive Stock Options, the foregoing shall be subject to any limitations under the Code, (2) in the case of the exercise of an
SAR, the number of shares counted against the shares available under the Plan shall be the full number of shares subject to the SAR multiplied by the percentage of the SAR actually exercised, regardless of the number of shares actually used to
settle such SAR upon exercise and (3) the shares covered by a tandem SAR shall not again become available for grant upon the expiration or termination of such tandem SAR; and 

(C) shares of Common Stock delivered (either by actual delivery, attestation, or net exercise) to the Company by a Participant under the Plan
or the 2006 Plan to (i) purchase shares of Common Stock upon the exercise of an Award or (ii) satisfy tax withholding obligations (including shares retained from the Award creating the tax obligation) shall not be added back to the number
of shares available for the future grant of Awards under the Plan. 

  
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 As of the closing of the Company’s initial public offering there were 1,918,378 shares reserved for issuance
under the 2006 Plan upon exercise of outstanding stock options, which were the only option awards then outstanding under the 2006 Plan. 

(b) Section 162(m) Per-Participant Limit. Subject to adjustment under Section 9, the maximum number of shares of
Common Stock with respect to which Awards may be granted to any Participant under the Plan shall be 2,500,000 per calendar year. For purposes of the foregoing limit, the combination of an Option in tandem with an SAR shall be treated as a
single Award. The per-Participant limit described in this Section 4(b) shall be construed and applied consistently with Section 162(m) of the Code or any successor provision thereto, and the regulations thereunder
(“Section 162(m)”). 
 (c) Substitute Awards. In connection with a merger or consolidation of an entity
with the Company or the acquisition by the Company of property or stock of an entity, the Board may grant Awards in substitution for any options or other stock or stock-based awards granted by such entity or an affiliate thereof. Substitute
Awards may be granted on such terms as the Board deems appropriate in the circumstances, notwithstanding any limitations on Awards contained in the Plan. Substitute Awards shall not count against the overall share limit set forth in
Section 4(a)(1) or any sublimit contained in the Plan, except as may be required by reason of Section 422 and related provisions of the Code. 
  

	5.	Stock Options 

 (a) General. The Board may grant options to purchase Common
Stock (each, an “Option”) and determine the number of shares of Common Stock to be covered by each Option, the exercise price of each Option and the conditions and limitations applicable to the exercise of each Option, including
conditions relating to applicable federal or state securities laws, as it considers necessary or advisable. 
 (b) Incentive Stock
Options. An Option that the Board intends to be an “incentive stock option” as defined in Section 422 of the Code (an “Incentive Stock Option”) shall only be granted to employees of Gelesis, Inc., any of
Gelesis, Inc.’s present or future parent or subsidiary corporations as defined in Sections 424(e) or (f) of the Code, and any other entities the employees of which are eligible to receive Incentive Stock Options under the Code,
and shall be subject to and shall be construed consistently with the requirements of Section 422 of the Code. An Option that is not intended to be an Incentive Stock Option shall be designated a “Nonstatutory Stock
Option.” The Company shall have no liability to a Participant, or any other party, if an Option (or any part thereof) that is intended to be an Incentive Stock Option is not an Incentive Stock Option or if the Company converts an
Incentive Stock Option to a Nonstatutory Stock Option. No Incentive Stock Option may be granted hereunder more than 10 years after the most recent date on which the Plan has been approved for purposes of Section 422 of the Code. No more than
3,672,809 shares may be granted under the Plan as Incentive Stock Options. 

  
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 (c) Exercise Price. The Board shall establish the exercise price of each Option and
specify the exercise price in the applicable Option certificate. The exercise price shall be not less than 100% of the Fair Market Value per share of Common Stock on the date the Option is granted; provided that if the Board approves the
grant of an Option with an exercise price to be determined on a future date, the exercise price shall be not less than 100% of the Fair Market Value on such future date. “Fair Market Value” of Common Stock on any given date means
the fair market value of Common Stock determined in good faith by the Board; provided, however, that if Common Stock is admitted to quotation on a national securities exchange, the determination shall be made by reference to the closing price of the
Common Stock on the date of grant. If there are no market quotations for the date of grant, the determination shall be made by reference to the closing price of the Common Stock on the last preceding such date for which there are market quotations.

 (d) Duration of Options. Each Option shall be exercisable at such times and subject to such terms and conditions as the Board
may specify in the applicable option agreement; provided, however, that no Option will be granted with a term in excess of 10 years. 

(e) Exercise of Options. Options may be exercised by delivery to the Company of a notice of exercise in a form (which may be
electronic) approved by the Company, together with payment in full (in the manner specified in Section 5(f)) of the exercise price for the number of shares for which the Option is exercised. Shares of Common Stock subject to the Option
will be delivered by the Company as soon as practicable following exercise. 
 (f) Payment Upon Exercise. Common Stock purchased
upon the exercise of an Option granted under the Plan shall be paid for as follows: 
 (1) in cash or by check, payable to the order of the
Company; 
 (2) except as may otherwise be provided in the applicable Option certificate or approved by the Board, in its sole discretion,
by (i) delivery of an irrevocable and unconditional undertaking by a creditworthy broker to deliver promptly to the Company sufficient funds to pay the exercise price and any required tax withholding or (ii) delivery by the Participant to
the Company of a copy of irrevocable and unconditional instructions to a creditworthy broker to deliver promptly to the Company cash or a check sufficient to pay the exercise price and any required tax withholding; 

(3) to the extent provided for in the applicable Option certificate or approved by the Board, in its sole discretion, by delivery (either by
actual delivery or attestation) of shares of Common Stock owned by the Participant valued at their Fair Market Value, provided (i) such method of payment is then permitted under applicable law, (ii) such Common Stock, if acquired directly
from the Company, was owned by the Participant for such minimum period of time, if any, as may be established by the Board in its discretion and (iii) such Common Stock is not subject to any repurchase, forfeiture, unfulfilled vesting or other
similar requirements; 

  
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 (4) to the extent provided for in the applicable Nonstatutory Stock Option certificate or
approved by the Board in its sole discretion, by delivery of a notice of “net exercise” to the Company, as a result of which the Participant would receive (i) the number of shares underlying the portion of the Option being exercised,
less (ii) such number of shares as is equal to (A) the aggregate exercise price for the portion of the Option being exercised divided by (B) the Fair Market Value on the date of exercise; 

(5) to the extent permitted by applicable law and provided for in the applicable Option certificate or approved by the Board, in its sole
discretion, by payment of such other lawful consideration as the Board may determine; or 
 (6) by any combination of the above permitted
forms of payment. 
 (g) Limitation on Repricing. Unless such action is approved by the Company’s stockholders, the Company may
not (except as provided for under Section 9): (1) amend any outstanding Option granted under the Plan to provide an exercise price per share that is lower than the then-current exercise price per share of such outstanding Option,
(2) cancel any outstanding option (whether or not granted under the Plan) and grant in substitution therefor new Awards under the Plan (other than Awards granted pursuant to Section 4(c)) covering the same or a different number of shares
of Common Stock and having an exercise price per share lower than the then-current exercise price per share of the cancelled option, (3) cancel in exchange for a cash payment any outstanding Option with an exercise price per share above the
then-current Fair Market Value, other than pursuant to Section 9, or (4) take any other action under the Plan that constitutes a “repricing” within the meaning of the rules of the NASDAQ Stock Market. 

 

	6.	Stock Appreciation Rights 

 (a) General. The Board may grant Awards
consisting of stock appreciation rights (“SARs”) entitling the holder, upon exercise, to receive an amount of Common Stock or cash or a combination thereof (such form to be determined by the Board) determined by reference to
appreciation, from and after the date of grant, in the Fair Market Value of a share of Common Stock over the measurement price established pursuant to Section 6(b). The date as of which such appreciation is determined shall be the exercise
date. 
 (b) Measurement Price. The Board shall establish the measurement price of each SAR and specify it in the applicable SAR
certificate . The measurement price shall not be less than 100% of the Fair Market Value on the date the SAR is granted; provided that if the Board approves the grant of an SAR effective as of a future date, the measurement price shall
be not less than 100% of the Fair Market Value on such future date. 

  
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 (c) Duration of SARs. Each SAR shall be exercisable at such times and subject
to such terms and conditions as the Board may specify in the applicable SAR agreement; provided, however, that no SAR will be granted with a term in excess of 10 years. 

(d) Exercise of SARs. SARs may be exercised by delivery to the Company of a notice of exercise in a form (which may be electronic)
approved by the Company, together with any other documents required by the Board. 
 (e) Limitation on Repricing. Unless such action
is approved by the Company’s stockholders, the Company may not (except as provided for under Section 9): (1) amend any outstanding SAR granted under the Plan to provide a measurement price per share that is lower than the
then-current measurement price per share of such outstanding SAR, (2) cancel any outstanding SAR (whether or not granted under the Plan) and grant in substitution therefor new Awards under the Plan (other than Awards granted pursuant to
Section 4(c)) covering the same or a different number of shares of Common Stock and having an exercise or measurement price per share lower than the then-current measurement price per share of the cancelled SAR, (3) cancel in exchange for
a cash payment any outstanding SAR with a measurement price per share above the then-current Fair Market Value, other than pursuant to Section 9, or (4) take any other action under the Plan that constitutes a “repricing” within
the meaning of the rules of the NASDAQ Stock Market. 
  

	7.	Restricted Stock; Restricted Stock Units 

 (a) General. The Board may
grant Awards entitling recipients to acquire shares of Common Stock (“Restricted Stock”), subject to the right of the Company to repurchase all or part of such shares at their issue price or other stated or formula price (or to
require forfeiture of such shares if issued at no cost) from the recipient in the event that conditions specified by the Board in the applicable Award are not satisfied prior to the end of the applicable restriction period or periods established by
the Board for such Award. The Board may also grant Awards entitling the recipient to receive shares of Common Stock or cash to be delivered at the time such Award vests (“Restricted Stock Units”) (Restricted Stock and
Restricted Stock Units are each referred to herein as a “Restricted Stock Award”). 
 (b) Terms and Conditions
for All Restricted Stock Awards. The Board shall determine the terms and conditions of a Restricted Stock Award, including the conditions for vesting and repurchase (or forfeiture) and the issue price, if any. 

(c) Additional Provisions Relating to Restricted Stock. 

(1) Dividends. Unless otherwise provided in the applicable Award certificate or agreement, any dividends (whether paid in cash,
stock or property) declared and paid by the Company with respect to shares of Restricted Stock (“Accrued Dividends”) shall be paid to the Participant only if and when such shares become free

  
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from the restrictions on transferability and forfeitability that apply to such shares. Each payment of Accrued Dividends will be made no later than the end of the calendar year in which the
dividends are paid to stockholders of that class of stock or, if later, the 15th day of the third month following the lapsing of the restrictions on transferability and the forfeitability provisions applicable to the underlying shares of Restricted
Stock. 
 (2) Stock Certificates. The Company may require that any stock certificates issued in respect of shares of Restricted
Stock, as well as dividends or distributions paid on such Restricted Stock, shall be deposited in escrow by the Participant, together with a stock power endorsed in blank, with the Company (or its designee). At the expiration of the applicable
restriction periods, the Company (or such designee) shall deliver the certificates no longer subject to such restrictions to the Participant or if the Participant has died, to his or her Designated Beneficiary. “Designated
Beneficiary” means (i) the beneficiary designated, in a manner determined by the Board, by a Participant to receive amounts due or exercise rights of the Participant in the event of the Participant’s death or (ii) in the
absence of an effective designation by a Participant, the Participant’s estate. 
 (d) Additional Provisions Relating to Restricted
Stock Units. 
 (1) Settlement. Upon the vesting of and/or lapsing of any other restrictions (i.e., settlement) with respect
to each Restricted Stock Unit, the Participant shall be entitled to receive from the Company one share of Common Stock or (if so provided in the applicable Award certificate) an amount of cash equal to the Fair Market Value of one share of Common
Stock. The Board may, in its discretion, provide that settlement of Restricted Stock Units shall be deferred, on a mandatory basis or at the election of the Participant in a manner that complies with Section 409A of the Code. 

(2) Voting Rights. A Participant shall have no voting rights with respect to any Restricted Stock Units. 

(3) Dividend Equivalents. The Award certificate for Restricted Stock Units may provide Participants with the right to receive an
amount equal to any dividends or other distributions declared and paid on an equal number of outstanding shares of Common Stock (“Dividend Equivalents”). Dividend Equivalents may be paid currently or credited to an account for
the Participant, may be settled in cash and/or shares of Common Stock and may be subject to the same restrictions on transfer and forfeitability as the Restricted Stock Units with respect to which paid, in each case to the extent provided in the
Award certificate. 
  

	8.	Other Stock-Based and Cash-Based Awards 

 (a) General. Other Awards of
shares of Common Stock, and other Awards that are valued in whole or in part by reference to, or are otherwise based on, shares of Common Stock or other property (“Other Stock-Based-Awards”), may be granted hereunder to
Participants. Such Other Stock-Based Awards shall also be available as a  

  
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form of payment in the settlement of other Awards granted under the Plan or as payment in lieu of compensation to which a Participant is otherwise entitled. Other Stock-Based Awards may
be paid in shares of Common Stock or cash, as the Board shall determine. The Company may also grant Performance Awards or other Awards denominated in cash (“Cash-Based Awards”) rather than shares of Common Stock. 

(b) Terms and Conditions. Subject to the provisions of the Plan, the Board shall determine the terms and conditions of each Other
Stock-Based Award or Cash-Based Award, including any purchase price applicable thereto. 
  

	9.	Adjustments for Changes in Common Stock and Certain Other Events 

 (a) Changes in
Capitalization. In the event of any stock split, reverse stock split, stock dividend, recapitalization, combination of shares, reclassification of shares, spin-off or other similar change in capitalization or event, or any dividend or
distribution to holders of Common Stock other than an ordinary cash dividend, (i) the number and class of securities available under the Plan, (ii) the share counting rules and sublimit set forth in Sections 4(a) and 4(b),
(iii) the number and class of securities and exercise price per share of each outstanding Option, (iv) the share and per-share provisions and the measurement price of each outstanding SAR, (v) the number of shares subject to and the
repurchase price per share subject to each outstanding Restricted Stock Award and (vi) the share and per-share-related provisions and the purchase price, if any, of each outstanding Other Stock-Based Award, shall be equitably adjusted by the
Company (or substituted Awards may be made, if applicable) in the manner determined by the Board. Without limiting the generality of the foregoing, in the event the Company effects a split of the Common Stock by means of a stock dividend and
the exercise price of and the number of shares subject to an outstanding Option are adjusted as of the date of the distribution of the dividend (rather than as of the record date for such dividend), then an optionee who exercises an Option between
the record date and the distribution date for such stock dividend shall be entitled to receive, on the distribution date, the stock dividend with respect to the shares of Common Stock acquired upon such Option exercise, notwithstanding the fact that
such shares were not outstanding as of the close of business on the record date for such stock dividend. 
 (b) Reorganization
Events. 
 (1) Definition. A “Reorganization Event” shall mean: (a) any merger or consolidation of
the Company with or into another entity as a result of which all of the Common Stock of the Company is converted into or exchanged for the right to receive cash, securities or other property or is cancelled, (b) any transfer or disposition of
all of the Common Stock of the Company for cash, securities or other property pursuant to a share exchange or other transaction or (c) any liquidation or dissolution of the Company. 

  
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 (2) Consequences of a Reorganization Event on Awards Other than Restricted Stock. 

(A) In connection with a Reorganization Event, the Board may take any one or more of the following actions as to all or any (or any portion
of) outstanding Awards other than Restricted Stock on such terms as the Board determines (except to the extent specifically provided otherwise in an applicable Award certificate or agreement or another agreement between the Company and the
Participant): (i) provide that such Awards shall be assumed, or substantially equivalent Awards shall be substituted, by the acquiring or succeeding corporation (or an affiliate thereof), (ii) upon written notice to a Participant,
provide that all of the Participant’s unexercised Awards will terminate immediately prior to the consummation of such Reorganization Event unless exercised by the Participant (to the extent then exercisable) within a specified period following
the date of such notice, (iii) provide that outstanding Awards shall become exercisable, realizable, or deliverable, or restrictions applicable to an Award shall lapse, in whole or in part prior to or upon such Reorganization Event,
(iv) in the event of a Reorganization Event under the terms of which holders of Common Stock will receive upon consummation thereof a cash payment for each share surrendered in the Reorganization Event (the “Acquisition
Price”), make or provide for a cash payment to Participants with respect to each Award held by a Participant equal to (A) the number of shares of Common Stock subject to the vested portion of the Award (after giving effect to any
acceleration of vesting that occurs upon or immediately prior to such Reorganization Event) multiplied by (B) the excess, if any, of (I) the Acquisition Price over (II) the exercise, measurement or purchase price of such Award and any
applicable tax withholdings, in exchange for the termination of such Award, (v) provide that, in connection with a liquidation or dissolution of the Company, Awards shall convert into the right to receive liquidation proceeds (if applicable,
net of the exercise, measurement or purchase price thereof and any applicable tax withholdings) and (vi) any combination of the foregoing. In taking any of the actions permitted under this Section 9(b)(2), the Board shall not be
obligated by the Plan to treat all Awards, all Awards held by a Participant, or all Awards of the same type, identically. 
 (B)
Notwithstanding the terms of Section 9(b)(2)(A), in the case of outstanding Restricted Stock Units that are subject to Section 409A of the Code: (i) if the applicable Restricted Stock Unit certificate provides that the Restricted
Stock Units shall be settled upon a “change in control event” within the meaning of Treasury Regulation Section 1.409A-3(i)(5)(i), and the Reorganization Event constitutes such a “change in control event”, then no assumption
or substitution shall be permitted pursuant to Section 9(b)(2)(A)(i) and the Restricted Stock Units shall instead be settled in accordance with the terms of the applicable Restricted Stock Unit certificate; and (ii) the Board may only
undertake the actions set forth in clauses (iii), (iv) or (v) of Section 9(b)(2)(A) if the Reorganization Event constitutes a “change in control event” as defined under Treasury Regulation
Section 1.409A-3(i)(5)(i) and such action is permitted or required by Section 409A of the Code; if the Reorganization Event is not a “change in control event” as so defined or such action is not permitted or required by
Section 409A of the Code, and the acquiring or succeeding corporation does not assume or substitute the Restricted Stock Units pursuant to clause (i) of Section 9 (b)(2)(A), then the unvested Restricted Stock Units shall terminate
immediately prior to the consummation of the Reorganization Event without any payment in exchange therefor. 

  
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 (C) For purposes of Section 9(b)(2)(A)(i), an Award (other than Restricted Stock) shall be
considered assumed if, following consummation of the Reorganization Event, such Award confers the right to purchase or receive pursuant to the terms of such Award, for each share of Common Stock subject to the Award immediately prior to the
consummation of the Reorganization Event, the consideration (whether cash, securities or other property) received as a result of the Reorganization Event by holders of Common Stock for each share of Common Stock held immediately prior to the
consummation of the Reorganization Event (and if holders were offered a choice of consideration, the type of consideration chosen by the holders of a majority of the outstanding shares of Common Stock); provided, however, that if the
consideration received as a result of the Reorganization Event is not solely common stock of the acquiring or succeeding corporation (or an affiliate thereof), the Company may, with the consent of the acquiring or succeeding corporation, provide for
the consideration to be received upon the exercise or settlement of the Award to consist solely of such number of shares of common stock of the acquiring or succeeding corporation (or an affiliate thereof) that the Board determined to be equivalent
in value (as of the date of such determination or another date specified by the Board) to the per share consideration received by holders of outstanding shares of Common Stock as a result of the Reorganization Event. 

(3) Consequences of a Reorganization Event on Restricted Stock. Upon the occurrence of a Reorganization Event other than a
liquidation or dissolution of the Company, the repurchase and other rights of the Company with respect to outstanding Restricted Stock shall inure to the benefit of the Company’s successor and shall, unless the Board determines otherwise, apply
to the cash, securities or other property which the Common Stock was converted into or exchanged for pursuant to such Reorganization Event in the same manner and to the same extent as they applied to such Restricted Stock; provided,
however, that the Board may provide for termination or deemed satisfaction of such repurchase or other rights under the instrument evidencing any Restricted Stock or any other agreement between a Participant and the Company, either initially
or by amendment. Upon the occurrence of a Reorganization Event involving the liquidation or dissolution of the Company, except to the extent specifically provided to the contrary in the instrument evidencing any Restricted Stock or any other
agreement between a Participant and the Company, all restrictions and conditions on all Restricted Stock then outstanding shall automatically be deemed terminated or satisfied. 

10. General Provisions Applicable to Awards 

(a) Transferability of Awards. Awards shall not be sold, assigned, transferred, pledged or otherwise encumbered by the person to
whom they are granted, either voluntarily or by operation of law, except by will or the laws of descent and distribution or, other than in the case of an Incentive Stock Option or Awards subject to Section 409A of the Code, pursuant to a
qualified domestic relations order, and, during the life of the Participant, shall be exercisable only by the Participant; provided, however, except with respect to Awards subject to Section 409A of the Code, that the Board may

  
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permit or provide in an Award for the gratuitous transfer of the Award by the Participant to or for the benefit of any immediate family member, family trust or other entity established for the
benefit of the Participant and/or an immediate family member thereof if the Company would be eligible to use a Form S-8 under the Securities Act for the registration of the sale of the Common Stock subject to such Award to such proposed
transferee; provided further, that the Company shall not be required to recognize any such permitted transfer until such time as such permitted transferee shall, as a condition to such transfer, deliver to the Company a written instrument in
form and substance satisfactory to the Company confirming that such transferee shall be bound by all of the terms and conditions of the Award. References to a Participant, to the extent relevant in the context, shall include references to
authorized transferees. For the avoidance of doubt, nothing contained in this Section 10(a) shall be deemed to restrict a transfer to the Company. 

(b) Documentation. Each Award shall be evidenced in such form (written, electronic or otherwise) as the Board shall
determine. Each Award may contain terms and conditions in addition to those set forth in the Plan. 
 (c) Board
Discretion. Except as otherwise provided by the Plan, each Award may be made alone or in addition or in relation to any other Award. The terms of each Award need not be identical, and the Board need not treat Participants uniformly.

 (d) Termination of Status. The Board shall determine the effect of the disability, death, termination or other cessation of
employment, authorized leave of absence or other change in the employment or other status of a Participant on any Award of the Participant and the extent to which, and the period during which, the Participant, or the Participant’s legal
representative, conservator, guardian or Designated Beneficiary, may exercise rights under the Award. 
 (e) Withholding. The
Participant must satisfy all applicable federal, state, and local or other income and employment tax withholding obligations before the Company will deliver stock certificates or otherwise recognize ownership of Common Stock under an Award. The
Company may decide to satisfy the withholding obligations through additional withholding on salary or wages. If the Company elects not to or cannot withhold from other compensation, the Participant must pay the Company the full amount, if any,
required for withholding or have a broker tender to the Company cash equal to the withholding obligations. Payment of withholding obligations is due before the Company will issue any shares on exercise, vesting or release from forfeiture of an
Award or at the same time as payment of the exercise or purchase price, unless the Company determines otherwise. If provided for in an Award or approved by the Board in its sole discretion, a Participant may satisfy such tax obligations in
whole or in part by delivery (either by actual delivery or attestation) of shares of Common Stock, including shares retained from the Award creating the tax obligation, valued at their Fair Market Value; provided, however, except as otherwise
provided by the Board, that the total tax withholding where stock is being used to satisfy such tax obligations cannot exceed the Company’s minimum statutory withholding obligations (based on minimum statutory

  
 - 12 - 

 
withholding rates for federal and state tax purposes, including payroll taxes, that are applicable to such supplemental taxable income). Shares used to satisfy tax withholding requirements
cannot be subject to any repurchase, forfeiture, unfulfilled vesting or other similar requirements. 
 (f) Amendment of
Award. The Board may amend, modify or terminate any outstanding Award, including but not limited to, substituting therefor another Award of the same or a different type, changing the date of exercise or realization, and converting an
Incentive Stock Option to a Nonstatutory Stock Option. The Participant’s consent to such action shall be required unless (i) the Board determines that the action, taking into account any related action, does not materially and
adversely affect the Participant’s rights under the Plan or (ii) the change is permitted under Section 9. 
 (g)
Conditions on Delivery of Stock. The Company will not be obligated to deliver any shares of Common Stock pursuant to the Plan or to remove restrictions from shares previously issued or delivered under the Plan until (i) all
conditions of the Award have been met or removed to the satisfaction of the Company, (ii) in the opinion of the Company’s counsel, all other legal matters in connection with the issuance and delivery of such shares have been satisfied,
including any applicable securities laws and regulations and any applicable stock exchange or stock market rules and regulations, and (iii) the Participant has executed and delivered to the Company such representations or agreements as the
Company may consider appropriate to satisfy the requirements of any applicable laws, rules or regulations. 
 (h)
Acceleration. The Board may at any time provide that any Award shall become immediately exercisable in whole or in part, free of some or all restrictions or conditions, or otherwise realizable in whole or in part, as the case may be.

 (i) Performance Awards. 

(1) Grants. Restricted Stock Awards and Other Stock-Based Awards under the Plan may be made subject to the achievement of
performance goals pursuant to this Section 10(i) (“Performance Awards”). Subject to Section 10(i)(4), no Performance Awards shall vest prior to the first anniversary of the date of grant. Performance Awards can
also provide for cash payments of up to $3,000,000 per calendar year per individual. 
 (2) Committee. Grants of Performance
Awards to any Covered Employee (as defined below) intended to qualify as “performance-based compensation” under Section 162(m) (“Performance-Based Compensation”) shall be made only by a Committee (or a
subcommittee of a Committee) comprised solely of two or more directors eligible to serve on a committee making Awards qualifying as “performance-based compensation” under Section 162(m). In the case of such Awards granted to
Covered Employees, references to the Board or to a Committee shall be treated as referring to such Committee (or subcommittee). “Covered Employee” shall mean any person who is, or whom the Committee, in its discretion,
determines may be, a “covered employee” under Section 162(m)(3) of the Code. 

  
 - 13 - 

 (3) Performance Measures. For any Award that is intended to qualify as
Performance-Based Compensation, the Committee shall specify that the degree of granting, vesting and/or payout shall be subject to the achievement of one or more objective performance measures established by the Committee, which shall be based on
the relative or absolute attainment of specified levels of one or any combination of the following, which may be determined pursuant to generally accepted accounting principles (“GAAP”) or on a non-GAAP basis, as determined by the
Committee: scientific progress, product development progress, business development progress, including in-licensing, net income/(loss), earnings/(loss) before or after discontinued operations, interest, taxes, depreciation and/or amortization,
operating profit/(loss) before or after discontinued operations and/or taxes, sales, sales growth, earnings growth, cash flow or cash position, gross margins, stock price, financings (issuance of debt or equity), refinancings, market share, return
on sales, assets, equity or investment, improvement of financial ratings, achievement of balance sheet or income statement objectives or total stockholder return. Such goals may reflect absolute entity or business unit performance or a relative
comparison to the performance of a peer group of entities or other external measure of the selected performance criteria and may be absolute in their terms or measured against or in relationship to other companies comparably, similarly or otherwise
situated. The Committee may specify that such performance measures shall be adjusted to exclude any one or more of (i) extraordinary items, (ii) gains or losses on the dispositions of discontinued operations, (iii) the cumulative
effects of changes in accounting principles, (iv) the writedown of any asset, (vi) fluctuation in foreign currency exchange rates, and (vi) charges for restructuring and rationalization programs. Such performance
measures: (i) may vary by Participant and may be different for different Awards; (ii) may be particular to a Participant or the department, branch, line of business, subsidiary or other unit in which the Participant works and may
cover such period as may be specified by the Committee; and (iii) shall be set by the Committee within the time period prescribed by, and shall otherwise comply with the requirements of, Section 162(m). Awards that are not intended to
qualify as Performance-Based Compensation may be based on these or such other performance measures as the Board may determine. 
 (4)
Adjustments. Notwithstanding any provision of the Plan, with respect to any Performance Award that is intended to qualify as Performance-Based Compensation, the Committee may adjust downwards, but not upwards, the cash or number of
shares payable pursuant to such Award, and the Committee may not waive the achievement of the applicable performance measures except in the case of the death or disability of the Participant or a change in control of the Company. 

(5) Other. The Committee shall have the power to impose such other restrictions on Performance Awards as it may deem necessary or
appropriate to ensure that such Awards satisfy all requirements for Performance-Based Compensation. 

  
 - 14 - 

	11.	Miscellaneous 

 (a) No Right To Employment or Other Status. No person shall
have any claim or right to be granted an Award by virtue of the adoption of the Plan, and the grant of an Award shall not be construed as giving a Participant the right to continued employment or any other relationship with the Company. The
Company expressly reserves the right at any time to dismiss or otherwise terminate its relationship with a Participant free from any liability or claim under the Plan, except as expressly provided in the applicable Award. 

(b) No Rights As Stockholder. Subject to the provisions of the applicable Award, no Participant or Designated Beneficiary shall
have any rights as a stockholder with respect to any shares of Common Stock to be distributed with respect to an Award until becoming the record holder of such shares. 

(c) Effective Date and Term of Plan. The Plan shall become effective on the date the Plan is approved by the Company’s
stockholders (the “Effective Date”). No Awards shall be granted under the Plan after the expiration of 10 years from the Effective Date, but Awards previously granted may extend beyond that date. 

(d) Amendment of Plan. The Board may amend, suspend or terminate the Plan or any portion thereof at any time provided that
(i) to the extent required by Section 162(m), no Award granted to a Participant that is intended to comply with Section 162(m) after the date of such amendment shall become exercisable, realizable or vested, as applicable to such
Award, unless and until the Company’s stockholders approve such amendment in the manner required by Section 162(m); and (ii) no amendment that would require stockholder approval under the rules of the NASDAQ Stock Market may be
made effective unless and until the Company’s stockholders approve such amendment. In addition, if at any time the approval of the Company’s stockholders is required as to any other modification or amendment under Section 422 of
the Code or any successor provision with respect to Incentive Stock Options, the Board may not effect such modification or amendment without such approval. Unless otherwise specified in the amendment, any amendment to the Plan adopted in
accordance with this Section 11(d) shall apply to, and be binding on the holders of, all Awards outstanding under the Plan at the time the amendment is adopted, provided the Board determines that such amendment, taking into account any
related action, does not materially and adversely affect the rights of Participants under the Plan. No Award shall be made that is conditioned upon stockholder approval of any amendment to the Plan unless the Award provides that (i) it
will terminate or be forfeited if stockholder approval of such amendment is not obtained within no more than 12 months from the date of grant and (2) it may not be exercised or settled (or otherwise result in the issuance of Common Stock) prior
to such stockholder approval. 
 (e) Authorization of Sub-Plans (including for Grants to non-U.S. Employees). The Board may from
time to time establish one or more sub-plans under the Plan for purposes of satisfying applicable securities, tax or other laws of various jurisdictions. The Board shall establish such sub-plans by adopting supplements to the Plan containing
(i) such limitations on the Board’s discretion under the Plan as the Board 

  
 - 15 - 

 
deems necessary or desirable or (ii) such additional terms and conditions not otherwise inconsistent with the Plan as the Board shall deem necessary or desirable. All supplements
adopted by the Board shall be deemed to be part of the Plan, but each supplement shall apply only to Participants within the affected jurisdiction and the Company shall not be required to provide copies of any supplement to Participants in any
jurisdiction which is not the subject of such supplement. 
 (f) Compliance with Section 409A of the Code. Except as provided in
individual Award certificates or agreements initially or by amendment, if and to the extent (i) any portion of any payment, compensation or other benefit provided to a Participant pursuant to the Plan in connection with his or her employment
termination constitutes “nonqualified deferred compensation” within the meaning of Section 409A of the Code and (ii) the Participant is a specified employee as defined in Section 409A(a)(2)(B)(i) of the Code, in each
case as determined by the Company in accordance with its procedures, by which determinations the Participant (through accepting the Award) agrees that he or she is bound, such portion of the payment, compensation or other benefit shall not be paid
before the day that is six months plus one day after the date of “separation from service” (as determined under Section 409A of the Code) (the “New Payment Date”), except as Section 409A of the Code may then
permit. The aggregate of any payments that otherwise would have been paid to the Participant during the period between the date of separation from service and the New Payment Date shall be paid to the Participant in a lump sum on such New
Payment Date, and any remaining payments will be paid on their original schedule. 
 The Company makes no representations or warranty and shall have no
liability to the Participant or any other person if any provisions of or payments, compensation or other benefits under the Plan are determined to constitute nonqualified deferred compensation subject to Section 409A of the Code but do not to
satisfy the conditions of that section. 
 (g) Limitations on Liability. Notwithstanding any other provisions of the Plan, no
individual acting as a director, officer, employee or agent of the Company will be liable to any Participant, former Participant, spouse, beneficiary, or any other person for any claim, loss, liability, or expense incurred in connection with the
Plan, nor will such individual be personally liable with respect to the Plan because of any contract or other instrument he or she executes in his or her capacity as a director, officer, employee or agent of the Company. The Company will
indemnify and hold harmless each director, officer, employee or agent of the Company to whom any duty or power relating to the administration or interpretation of the Plan has been or will be delegated, against any cost or expense (including
attorneys’ fees) or liability (including any sum paid in settlement of a claim with the Board’s approval) arising out of any act or omission to act concerning the Plan unless arising out of such person’s own fraud or bad faith. 

(h) Governing Law. The provisions of the Plan and all Awards made hereunder shall be governed by and interpreted in accordance
with the laws of the State of Delaware, excluding choice-of-law principles of the law of such state that would require the application of the laws of a jurisdiction other than the State of Delaware. 

  
 - 16 -EX-10.15

 Exhibit 10.15 
  

 
  

					
	 Notice of Grant of Stock Options and

Option Agreement
	  	 Gelesis, Inc. ID: 20-4909933
 500 Boylston
Street, Suite 1600
 Boston, MA 02116
	  	

  
  

 

							
	[Name of Optionholder]	  		  	Option Number:                	  	[-]
	[Address of Optionholder]	  		  	Plan:	  	2015
	[City, State, Postal Code of Optionholder]	  		  		  	

  
  

Effective [-], you (the Optionholder) have been granted a(n) Incentive Stock Option to buy [-] shares of Gelesis, Inc. (the Company) common stock at $[-] per
share. 
 The total option price of the shares granted is $[-]. 

Shares in each period will become fully vested on the date shown. 
  

							
	 Shares
	  	Vest Type	  	Full Vest	  	Expiration Date
	  [-]	  	[-]	  	[-]	  	[-]

  
  

This option is intended to be treated as an Incentive Stock Option under Section 422 of the Internal Revenue Code of 1986, as amended. This notice,
together with the accompanying Gelesis, Inc. 2015 Equity Incentive Plan Incentive Stock Option Terms And Conditions (the Terms and Conditions), as well as the Gelesis, Inc. 2015 Equity Incentive Plan (the Plan) incorporated by reference into the
Terms and Conditions, constitute the entire agreement between you and the Company regarding this option. By your signature and the Company’s signature below, you and the Company agree to the terms of this option, the Terms and Conditions and
the Plan. 
  
  

 

					
	  
	 		  	  

			
	Gelesis, Inc.	 		  	Date
	  
	 		  	  

			
	[Name of Optionholder]	 		  	Date

  

			
		 	Date: [-]
		 	Time: [-]

 GELESIS, INC. 

2015 EQUITY INCENTIVE PLAN 

Incentive Stock Option Terms And Conditions 

 

 1. Plan Incorporated by Reference. This Option is issued pursuant to the terms of the
Plan and may be amended as provided in the Plan. Capitalized terms used and not otherwise defined in this certificate have the meanings given to them in the Plan. This certificate does not set forth all of the terms and conditions of the Plan, which
are incorporated herein by reference. The Committee administers the Plan and its determinations regarding the operation of the Plan are final and binding. Copies of the Plan may be obtained upon written request without charge from the Company. 

2. Option Price. The price to be paid for each share of Common Stock issued upon exercise of the whole or any part of this Option is
the Option Price set forth on the face of this certificate. 
 3. Exercisability Schedule. This Option may be exercised at any time
and from time to time for the number of shares and in accordance with the exercisability schedule set forth on the face of this certificate, but only for the purchase of whole shares. This Option may not be exercised as to any shares after the
Expiration Date. 
 4. Method of Exercise. To exercise this Option, the Optionholder shall deliver written notice of exercise to
the Company specifying the number of shares with respect to which the Option is being exercised accompanied by payment of the Option Price for such shares in cash, by certified check or in such other form, including shares of Common Stock of the
Company valued at their Fair Market Value on the date of delivery, as the Committee may approve. Promptly following such notice, the Company will deliver to the Optionholder a certificate representing the number of shares with respect to which the
Option is being exercised. 
 5. Rights as a Stockholder or Employee. The Optionholder shall not have any rights in respect of
shares as to which the Option shall not have been exercised and payment made as provided above. The Optionholder shall not have any rights to continued employment by the Company or its Affiliates by virtue of the grant of this Option. 

                6. Recapitalization, Mergers, Etc. As provided in the
Plan, in the event of corporate transactions affecting the Company’s outstanding Common Stock, the Committee shall equitably adjust the number and kind of shares subject to this Option and the exercise price hereunder or make provision for a
cash payment. If such transaction involves a consolidation or merger of the Company with another entity, the sale or exchange of all or substantially all of the assets of the Company or a reorganization or liquidation of the Company, then in lieu of
the foregoing, the Committee may upon written notice to the Optionholder provide that this Option shall terminate on a date not less than 20 days after the date of such notice unless theretofore exercised. In connection with such notice, the
Committee may in its discretion accelerate or waive any deferred exercise period. 
 7. Option Not Transferable. This Option is not
transferable by the Optionholder otherwise than by will or the laws of descent and distribution, and is exercisable, during the

 
Optionholder’s lifetime, only by the Optionholder. The naming of a Designated Beneficiary does not constitute a transfer. 

8. Exercise of Option After Termination of Employment. If the Optionholder’s employment with the Company or a corporation (or
parent or subsidiary corporation of such corporation) issuing or assuming a stock option in a transaction to which section 424(a) of the Code applies, is terminated for any reason other than by disability (within the meaning of section 22(e)(3) of
the Code) or death, the Optionholder may exercise the rights which were available to the Optionholder at the time of such termination only within three months from the date of termination. If Optionholder’s employment is terminated as a result
of disability, such rights may be exercised within twelve months from the date of termination. Upon the death of the Optionholder, his or her Designated Beneficiary shall have the right, at any time within twelve months after the date of death, to
exercise in whole or in part any rights that were available to the Optionholder at the time of death. Notwithstanding the foregoing, no rights under this Option may be exercised after the Expiration Date. 

9. Compliance with Securities Laws. It shall be a condition to the Optionholder’s right to purchase shares of Common Stock
hereunder that the Company may, in its discretion, require (a) that the shares of Common Stock reserved for issue upon the exercise of this Option shall have been duly listed, upon official notice of issuance, upon any national securities
exchange or automated quotation system on which the Company’s Common Stock may then be listed or quoted, (b) that either (i) a registration statement under the Securities Act of 1933 with respect to the shares shall be in effect, or
(ii) in the opinion of counsel for the Company, the proposed purchase shall be exempt from registration under that Act and the Optionholder shall have made such undertakings and agreements with the Company as the Company may reasonably require,
and (c) that such other steps, if any, as counsel for the Company shall consider necessary to comply with any law applicable to the issue of such shares by the Company shall have been taken by the Company or the Optionholder, or both. The
certificates representing the shares purchased under this Option may contain such legends as counsel for the Company shall consider necessary to comply with any applicable law. 

                10. Payment of Taxes. The Optionholder shall pay to the
Company, or make provision satisfactory to the Company for payment of, any taxes required by law to be withheld with respect to the exercise of this Option. The Committee may, in its discretion, require any other Federal or state taxes imposed on
the sale of the shares to be paid by the Optionholder. In the Committee’s discretion, such tax obligations may be paid in whole or in part in shares of Common Stock, including shares retained from the exercise of this Option, valued at their
Fair Market Value on the date of delivery. The Company may, to the extent permitted by law, deduct any such tax obligations from any payment of any kind otherwise due to the Optionholder. 

11. Notice of Sale of Shares Required. The Optionholder agrees to notify the Company in writing within 30 days of the disposition of
any shares purchased upon exercise of this Option if such disposition occurs within two years of the date of the grant of this Option or within one year after such purchase

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