Document:

EX-10.7

 Exhibit 10.7 
 THIS WARRANT HAS BEEN TAKEN FOR INVESTMENT, HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED OR THE SECURITIES LAWS OF ANY STATE, AND MAY NOT BE SOLD, TRANSFERRED, ASSIGNED, PLEDGED,
HYPOTHECATED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF SUCH REGISTRATION OR AN EXEMPTION THEREFROM UNDER SUCH LAWS. 

GLYCOMIMETICS, INC. 
 Common Stock Purchase Warrant 
  

			
	Warrant Issue Date: January 16 or 30, 2009	  	Warrant No. 2009-    

 GlycoMimetics, Inc., a Delaware corporation (the “Company”),
hereby certifies that, for value received,                      or its assigns or transferees (the “Holder”), is entitled,
subject to the terms set forth below, to purchase from the Company at any time during the period commencing on the Exercise Start Date (as hereinafter defined) and ending at 5:00 P.M., New York time, on the tenth (10th) anniversary of the date hereof (the “Expiration
Date”), up to the number of shares of Common Stock as determined pursuant to Section 1(a) below (the “Warrant Shares”), at the Exercise Price (as hereinafter defined). The number and character of the
Warrant Shares and the Exercise Price are subject to adjustment as provided herein. 
 The term “Warrant” as used
herein shall include this Warrant and any warrants delivered in substitution or exchange therefor as provided herein. This Warrant is one of the Company’s Common Stock purchase warrants (collectively, the “Bridge
Warrants”) issued concurrently with the issuance of those certain convertible unsecured promissory notes in the aggregate principal amount of up to $7,000,000 (the “Bridge Notes”) issued on January 16, 2009
or January 30, 2009, including such convertible unsecured promissory note (the “Note”) issued to the Holder. Each of the Warrants is substantially similar. Capitalized terms used but not otherwise defined herein have the
meanings ascribed to them in the Note. 
 The following terms, unless the context otherwise requires, have the following
respective meanings for purposes of this Warrant: 
 (a) “Common Stock” includes (i) the
Company’s Common Stock, $0.001 par value per share, and (ii) any other securities into which or for which any of the securities described in (i) may be converted or exchanged pursuant to a plan of recapitalization, reorganization,
merger, sale of assets or other similar corporate rearrangement. 
 (b) “Exercise Period” means the
period commencing on the Exercise Start Date and ending on the Expiration Date. 
 (c) “Exercise Price”
means $0.01 per Warrant Share. 

 (d) “Exercise Start Date” means the date hereof. 

(e) “Qualified Equity Financing” means the date on which the Company consummates an equity financing pursuant to
which it sells shares of its preferred stock with an aggregate sales price of not less than $5,000,000 excluding any and all convertible promissory notes which are converted into such preferred stock (including the Bridge Notes), and with the
principal purpose of raising capital. 
 1. Exercise of Warrant. 

(a) Calculation of Warrant Shares. The number of Warrant Shares the Holder is permitted to purchase is determined by reference to
the following formula: 
 WS = [[0.25 x HN] x [(D/30) x 0.20]]/SP where: 

WS = Number of Warrant Shares Holder is permitted to purchase 
 HN = The stated principal amount of the Note on the date of its issuance 
 D = The
lesser of (i) the actual number of calendar days elapsed between (x) the date hereof and (y) the date the Note is converted or repaid in full or (ii) 150. 
 SP = The price per share of Financing Stock sold in the Qualified Equity Financing; provided, however, that if no Qualified Equity Financing has occurred prior to the date this Warrant is
exercised, then SP shall equal $0.7845. 
 An example of the calculation is set forth on Annex A hereto. 

(b) Full Exercise. This Warrant may be exercised by the Holder by surrender of this Warrant, with the form of subscription
attached hereto (the “Subscription Notice”) duly executed by the Holder to the Company at its principal office, accompanied by payment, in cash or by certified or official bank check payable to the order of the Company, in the amount
obtained by multiplying the number of Warrant Shares by the applicable Exercise Price. 
 (c) Partial Exercise. This
Warrant may be exercised in part by surrender of the Warrant in the manner and at the place provided in Section 1(b) except that the amount payable by the Holder on such partial exercise shall be the amount obtained by multiplying
(i) the number of Warrant Shares designated by the Holder in the Subscription Notice by (ii) the applicable Exercise Price. On any such partial exercise the Company at its expense will forthwith issue and deliver to or upon the order of
the Holder a new warrant or warrants of like tenor, in the name of the Holder or as the Holder (upon payment by the Holder of any applicable transfer taxes) may request, calling in the aggregate on the face or faces thereof for the number of shares
of Common Stock for which such warrant or warrants may still be exercised. 
 (d) Exercise by Exchange of Warrant. In
addition to and without limiting the rights of the Holder under the terms hereof, this Warrant may be exercised by being exchanged in whole or in part at any time during the Exercise Period for the number of shares of Common

  
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Stock having an aggregate fair market value as reasonably determined by the Company’s board of directors) on the date of such exercise equal to the difference between (i) the fair
market value on the date of the exercise of a number of Warrant Shares (the “Exchange Shares”) designated by the Holder on the date of exercise to be exchanged for such shares Common Stock and (ii) the aggregate Exercise Price
otherwise payable by the Holder for such Exchange Shares. Upon any such exercise, the number of Warrant Shares purchasable upon exercise of this Warrant shall be reduced by the sum of (x) the number of such Exchange Shares and (y) the
number of Warrant Shares acquired hereunder using said Exchange Shares, if a balance of purchasable Warrant Shares remains after such exercise, the Company shall execute and deliver to the Holder a new Warrant for such balance of Warrant Shares. No
payment of any cash or other consideration shall be required or permitted. Such exchange shall be effective upon the date of receipt by the Company of the original Warrant surrendered for cancellation and a written request from the Holder that the
exchange pursuant to this Section 1(d) be made, or at such later date as may be specified in such request. No fractional shares arising out of the above formula for determining the number of shares issuable in such exchange shall be
issued, and the Company shall in lieu thereof make payment to the Holder of cash in the amount of such fraction multiplied by the then current market value of such securities on the date of the exchange. 

(e) Company Acknowledgment. The Company will, at the time of the exercise of this Warrant and upon the request of the Holder,
acknowledge in writing its continuing obligation to afford to the Holder any rights to which the Holder shall continue to be entitled after such exercise in accordance with the provisions of this Warrant. If the Holder shall fail to make any such
request, such failure shall not affect the continuing obligation of the Company to afford to the Holder any such rights. 
 2.
Delivery of Stock Certificates, on Exercise. As soon as practicable after the exercise of this Warrant in full or in part, and in any event within five (5) days thereafter, the Company, at its expense (including the payment by it of any
applicable issue taxes), will cause to be issued in the name of and delivered to the Holder, or as the Holder (upon payment by the Holder of any applicable transfer taxes) may direct, a certificate or certificates for the number of fully paid and
non-assessable Warrant Shares to which the Holder shall be entitled on such exercise, plus, in lieu of any fractional share to which the Holder would otherwise be entitled, cash equal to such fraction multiplied by the then current market value of
one (1) full share, together with any other stock or other securities and property (including cash, where applicable) to which the Holder is entitled upon such exercise pursuant to Section 1 or otherwise. 

3. Adjustment for Dividends in Other Stock, Property, Reclassification. In case at any time or from time to time, the holders of
Warrant Shares shall have received, or (on or after the record date fixed for the determination of shareholders eligible to receive) shall have become entitled to receive, without payment therefor, 

 

	 	(a)	other or additional stock or other securities or property (other than cash) by way of dividend, or 

 

	 	(b)	any cash (excluding cash dividends payable solely out of earnings or earned surplus of the Company), or 

 

	 	(c)	other or additional stock or other securities or property (including cash) by way of spin-off, split-up, reclassification, recapitalization, combination of shares or
similar corporate rearrangement, 

  
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 other than additional shares of Warrant Shares issued as a stock dividend or in a stock-split (adjustments
in respect of which are provided for in Section 5), then and in each such case the Holder, on the exercise hereof as provided in Section 1, shall be entitled to receive the amount of stock and other securities and property
(including cash in the cases referred to in subdivisions (b) and (c) of this Section 3) that Holder would hold on the date of such exercise if on the date hereof the Holder had been the holder of record of the number of Warrant
Shares into which this Warrant was exercisable into as of such date and had thereafter, during the period from the date hereof to and including the date of such exercise, retained such shares and all such other or additional stock and other
securities and property (including cash in the cases referred to in Sections 3(b) and 3(c)) receivable by the Holder as aforesaid during such period, giving effect to all adjustments called for during such period by Sections 4
and 5. 
 4. Adjustment for Reorganization, Consolidation, Merger. 

(a) General. In case at any time or from time to time, the Company shall (i) effect a reorganization, (ii) consolidate
with or merge into any other person, or (iii) transfer all or substantially all of its properties or assets to any other person under any plan or arrangement contemplating the dissolution of the Company, then, in each such case, except as
otherwise provided in Section 4(c), the holder of this Warrant, on the exercise hereof, as provided in Section 1, at any time after the consummation of such reorganization, consolidation or merger or the effective date of
such dissolution, as the case may be, shall receive, in lieu of the Warrant Shares issuable on such exercise prior to such consummation or such effective date, the stock and other securities and property (including cash) to which such holder would
have been entitled upon such consummation or in connection with such dissolution, as the case may be, if such holder had so exercised this Warrant immediately prior thereto, all subject to further adjustment thereafter as provided in Sections
3 and 5. 
 (b) Dissolution. Except as otherwise provided in Section 4(c) hereof, in the event of
any dissolution of the Company following the transfer of all or substantially all of its properties or assets, the Company, prior to such dissolution, shall at its expense deliver or cause to be delivered the stock and other securities and property
(including cash, where applicable) receivable by the holders of this Warrant after the effective date of such dissolution pursuant to this Section 4 to a bank or trust company, as trustee for the holder or holders of this Warrant.

 (c) Continuation of Terms. Except as otherwise provided herein, upon any reorganization, consolidation, merger or
transfer (and any dissolution following any transfer) referred to in this Section 4, this Warrant shall continue in full force and effect and the terms hereof shall be applicable to the shares of stock and other securities and property
receivable on the exercise of this Warrant after the consummation of such reorganization, consolidation or merger or the effective date of dissolution following any such transfer, as the case may be, and shall be binding upon the issuer of any such
stock or other securities, including, in the case of any such transfer, the person acquiring all or substantially all of the properties or assets of the Company, whether or not such person shall have expressly assumed the terms of this Warrant.

  
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 5. Adjustment for Extraordinary Events. In the event that the Company shall
(a) issue additional shares of Common Stock as a dividend or other distribution on outstanding Common Stock, (b) subdivide its outstanding shares of Common Stock, or (c) combine its outstanding shares of Common Stock into a smaller
number of shares of Common Stock (any such event, an “Extraordinary Event”), then, in each such Extraordinary Event, the Exercise Price shall, simultaneously with the happening of such Extraordinary Event, be adjusted by
multiplying the then Exercise Price by a fraction, the numerator of which shall be the number of shares of Common Stock outstanding immediately prior to such Extraordinary Event and the denominator of which shall be the number of shares of Common
Stock outstanding immediately after such Extraordinary Event, and the product so obtained shall thereafter be the Exercise Price then in effect, provided, however, that in no event shall the Exercise Process be less than the then
applicable par value of a share of Common Stock. 
 The Exercise Price, as so adjusted, shall be readjusted in the same manner
upon the happening of any successive Extraordinary Event or Extraordinary Events. The holder of this Warrant shall thereafter, on the exercise hereof as provided in Section 1, be entitled to receive that number of Warrant Shares
determined by multiplying the number of shares of Common Stock, as applicable, which would otherwise (but for the provisions of this Section 5) be issuable on such exercise by a fraction, the numerator of which is the Exercise Price that
would otherwise (but for the provisions of this Section 5) be in effect, and the denominator of which is the Exercise Price in effect on the date of such exercise. Notwithstanding the foregoing, in no event shall the Exercise Process be
less than the then applicable par value of a share of Common Stock 
 6. Certificate as to Adjustments. In each case of
any adjustment or readjustment in the Warrant Shares issuable on the exercise of this Warrant, the Company at its expense will promptly cause its Treasurer or Chief Financial Officer to compute such adjustment or readjustment in accordance with the
terms of this Warrant and prepare a certificate setting forth such adjustment or readjustment and showing in detail the facts upon which such adjustment or readjustment is based. The Company will, as soon as practical, mail a copy of each such
certificate to any holder of this Warrant, and will, on the written request at any time of any holder of this Warrant, furnish to the Holder a like certificate setting forth the number of Warrant Shares that the Holder may purchase pursuant to this
Warrant, the Exercise Price then in effect, and the manner in which the foregoing was calculated. 
 7. Notices of Record
Date, Etc. In the event of: 
  

	 	(a)	any taking by the Company of a record of the holders of any class or securities for the purpose of determining the holders thereof who are entitled to receive any
dividend or other distribution, or any right to subscribe for, purchase or otherwise acquire any shares of stock of any class or any other securities or property, or to receive any other right, or 

  
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	 	(b)	any capital reorganization of the Company, any reclassification or recapitalization of the capital stock of the Company or any transfer of all or substantially all the
assets of the Company to or consolidation or merger of the Company with or into any other person, or any voluntary or involuntary dissolution, liquidation or winding-up of the Company, 

then and in each such event the Company will mail or cause to be mailed to any holder of this Warrant a notice specifying (i) the date on which any
such record is to be taken for the purpose of such dividend, distribution or right, and stating the amount and character of such dividend, distribution or right, (ii) the date on which any such reorganization, reclassification,
recapitalization, transfer, consolidation, merger, dissolution, liquidation or winding-up is to take place, and the time, if any is to be fixed, as of which the Holders of record of Common Stock shall be entitled to exchange their shares of Common
Stock for securities or other property deliverable on such reorganization, reclassification, recapitalization, transfer, consolidation, merger, dissolution, liquidation or winding-up, and (iii) the amount and character of any stock or other
securities, or rights or options with respect thereto, proposed to be issued or granted, the date of such proposed issue or grant and the persons or class of persons to whom such proposed issue or grant is to be offered or made. Such notice shall be
mailed at least 20 days prior to the date specified in such notice on which any such action is to be taken. 
 8. Securities
Law Matters. 
 (a) Neither this Warrant nor the securities issuable upon exercise of this Warrant have been registered
under the Securities Act of 1933 (the “Securities Act”) or any state securities laws (together with the Securities Act, the “Acts”). Therefore, in order, among other things, to ensure compliance with the Acts
notwithstanding anything else in the Warrant to contrary, the Holder of this Warrant, including any successive Holder, agrees by accepting this Warrant as follows: This Warrant and the securities which may be issued upon the exercise hereof, may not
be sold, transferred, pledged or hypothecated in the absence of (i) an effective registration statement or post-effective amendment thereto for such Warrants or the securities into which this Warrant is exercisable, respectively, under the
Acts, or (ii) the Holder’s delivery to the Borrower of an opinion of counsel, reasonably satisfactory to the Borrower that an exemption from the registration requirements of the Acts is available; provided, that the securities into which
this Warrant is exercisable may be transferred by the Holder to its affiliates without satisfying the immediately preceding (i) and (ii) conditions. The Holder of this Warrant, including any successive Warrant, further represents and
warrants by accepting this Warrant that such Holder is an “Accredited Investor” as such term is defined in the Securities Act (and the regulations promulgated thereunder) and this Warrant and any securities issuable upon exercise of this
Warrant are being acquired for investment, and not with a view to distribution or resale, within the meaning of the Securities Act. Upon exercise of this Warrant, the persons entitled to receive the shares of securities into which this Warrant is
exercisable may be required to execute and deliver to the Company such other documents and instruments, in form reasonably satisfactory to the Company to effect the compliance of the issuance of this Warrant and the securities issuable on exercise
of this Warrant with the Acts. 

  
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 (b) Legend on Shares. Each certificate for securities initially issued upon exercise of this
Warrant, unless at the time of exercise such shares are registered under the Acts, shall bear substantially the following legend (and any additional legend required under said Acts or otherwise): 

“The securities represented by this Certificate have not been registered under the Securities Act of 1933 or any state securities
acts (the “Acts”) and cannot be transferred except (i) pursuant to a registration statement effective under the Acts, or (ii) pursuant to an exemption from the registration requirements of the Acts.” 

Any certificate issued at any time in exchange or substitution for any certificate bearing such legend (except a new certificate issued
upon completion of a public distribution pursuant to a registration statement under the Acts of the securities represented thereby) shall also bear such legend unless, in the reasonable opinion of counsel for the Company, the securities represented
thereby need no longer be subject to the transfer restrictions contained in this Warrant. The conversion and transfer restriction provisions of this Warrant shall be binding upon all successive Holders of this Warrant. 

9. Amendment. The terms of this Warrant may be amended, modified or waived only with the written consent of the Company and the
holders holding Bridge Warrants representing 75% of the aggregate Warrant Shares into which the Bridge Warrants are then exercisable. 
 10. Reservation of Stock. The Company will at all times reserve and keep available, solely for issuance and delivery on the exercise of this Warrant, all Warrant Shares from time to time issuable
on the exercise hereof. 
 11. Replacement of Warrant. On receipt of evidence reasonably satisfactory to the Company of
the loss, theft, destruction or mutilation of this Warrant and, in the case of any such loss, theft or destruction of this Warrant, on delivery of an indemnity agreement mutually agreeable to the Company and the Holder or, in the case of any such
mutilation, on surrender and cancellation of such Warrant, the Company at its expense will execute and deliver, in lieu thereof, a new substantially identical warrant. 
 12. Warrant Agent. The Company may, by written notice to the Holder, appoint an agent for the purpose of issuing Warrant Shares on the exercise of this Warrant pursuant to Section 1 and
replacing this Warrant pursuant to Section 11, or any of the foregoing, and thereafter any such issuance, exchange or replacement, as the case may be, shall be made at such office by such agent. 

13. Remedies. The Company stipulates that the remedies at law of the Holder, in the event of any default or threatened default by
the Company in the performance of or compliance with any of the terms of this Warrant, are not and will not be adequate, and that such terms may be specifically enforced by a decree for the specific performance of any agreement contained herein or
by an injunction against a violation of any of the terms hereof or otherwise. 

  
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 14. Negotiability, Etc. This Warrant is issued upon the following terms, to all of
which any holder or owner hereof by the taking hereof consents and agrees: 
  

	 	(a)	title to this Warrant may be transferred by endorsement (by the Holder executing the form of assignment at the end hereof) and delivery in the same manner as in the
case of a negotiable instrument transferable by endorsement and delivery; 

  

	 	(b)	any person in possession of this Warrant properly endorsed is authorized to represent himself as absolute owner hereof and is empowered to transfer absolute title
hereto by endorsement and delivery hereof to a bona fide purchaser hereof for value; each prior taker or owner waives and renounces all of his equities or rights in this Warrant in favor of each such bona fide purchaser, and each such bona fide
purchaser shall acquire absolute title hereto and to all rights represented hereby; and 

  

	 	(c)	until this Warrant is transferred on the books of the Company, the Company may treat the registered Holder as the absolute owner hereof for all purposes,
notwithstanding any notice to the contrary. 

 15. Notices, Etc. All notices and other communications from
the Company to the Holder of this Warrant shall be mailed by first class registered or certified mail, postage prepaid, at such address as may have been furnished to the Company in writing by the Holder or, until any the Holder furnishes to the
Company an address, then to, and at the address of, the last holder of this Warrant who has so furnished an address to the Company. 
 16. Governing Law. This Warrant shall be governed by, and construed in accordance with, the laws of the State of Delaware. 
 17. Miscellaneous. This Warrant and any term hereof may be changed, waived, discharged or terminated only by an instrument in writing signed by the party against which enforcement of such change,
waiver, discharge or termination is sought. The headings in this Warrant are for purposes of reference only, and shall not limit or otherwise affect any of the terms hereof. This Warrant is being executed as an instrument under seal. The invalidity
or unenforceability of any provision hereof shall in no way affect the validity or enforceability of any other provision. 

[Signature Page Follows] 

  
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 IN WITNESS WHEREOF, the Company has caused this Common Stock Purchase Warrant
No. 2009-     to be executed and delivered on its behalf by one of its duly authorized officers as of the date first written above. 

 

			
	GLYCOMIMETICS, INC.
		
	By:	 	  

		 	Rachel King
		 	President and CEO

 SIGNATURE PAGE TO COMMON STOCK PURCHASE WARRANT NO. 2009-     

 FORM OF SUBSCRIPTION 
 (To be signed only on exercise of Warrant) 
 TO: GlycoMimetics, Inc. 

The undersigned, the Holder of the within Warrant, hereby irrevocably elects to exercise this Warrant for, and to purchase thereunder,
                 shares of Common Stock of GlycoMimetics, Inc. and herewith makes payment of $         therefor, and requests
that the certificates for such shares be issued in the name of, and delivered to                     , whose address is
                                        .

  

									
	Dated:	 	  
	 		 	  

		 		 		 	Name of Holder:	 	  

									
		 		 		 	Title:	 	  

 FORM OF ASSIGNMENT 
 (To be signed only on transfer of Warrant) 
 For value received, the undersigned
hereby sells, assigns, and transfers unto                      the right represented by the Common Stock Purchase Warrant No.
     to purchase that number of shares of Common Stock of GlycoMimetics, Inc. to which the such Warrant relates, and appoints
                     attorney-in-fact to transfer such right on the books of GlycoMimetics, Inc. with full power of substitution in the premises.

  

									
	Dated:	 	  
	 		 	  

		 		 		 	Name of Holder:	 	  

									
		 		 		 	Title:	 	  

 ANNEX A 
 SAMPLE WARRANT SHARE CALCULATION 
  

			
	Assumptions:	  	
	Stated Principal of Note (HN):	  	300,000
	Date Note Issued:	  	16-Jan
	Date of Note Converted or Repaid in Full:	  	16-May
		
	Formula	  	
	[.25 x HN] x [(D/30) x 0.20]	  	
		
	Computation:	  	
		
	HN =	  	300,000.00
	D=	  	120
	SP=	  	$2.50
		
	[[0.25 x $300,000] x [(120/30) x 0.2]]/ $2.50 = 24,000EX-10.8

 Exhibit 10.8 
 GLYCOMIMETICS, INC. 
 2003 STOCK INCENTIVE PLAN 

 TABLE OF CONTENTS 

 

									
	 	 	 	 	 	  	Page	 
			
	1.	 	 PURPOSE
	  	 	1	  
	2.	 	 DEFINITIONS
	  	 	1	  
	3.	 	 ADMINISTRATION OF THE PLAN
	  	 	4	  
		 	3.1	 	 Board
	  	 	4	  
		 	3.2	 	 Committee
	  	 	4	  
		 	3.3	 	 Grants
	  	 	5	  
		 	3.4	 	 Deferral Arrangement
	  	 	6	  
		 	3.5	 	 No Liability
	  	 	6	  
	4.	 	 STOCK SUBJECT TO THE PLAN
	  	 	6	  
	5.	 	 GRANT ELIGIBILITY
	  	 	6	  
		 	5.1	 	 Employees and Other Service Providers
	  	 	6	  
		 	5.2	 	 Successive Grants
	  	 	6	  
		 	5.3	 	 Limitations on Incentive Stock Options
	  	 	7	  
	6.	 	 AWARD AGREEMENT
	  	 	7	  
	7.	 	 TERMS AND CONDITIONS OF OPTIONS
	  	 	7	  
		 	7.1	 	 Option Price
	  	 	7	  
		 	7.2	 	 Vesting
	  	 	7	  
		 	7.3	 	 Term
	  	 	8	  
		 	7.4	 	 Exercise of Options on Termination of Service
	  	 	8	  
		 	7.5	 	 Limitations on Exercise of Option
	  	 	8	  
		 	7.6	 	 Exercise Procedure
	  	 	8	  
		 	7.7	 	 Right of Holders of Options
	  	 	9	  
		 	7.8	 	 Delivery of Stock Certificates
	  	 	9	  
	8.	 	 TRANSFERABILITY OF OPTIONS
	  	 	9	  
		 	8.1	 	 Transferability of Options
	  	 	9	  
		 	8.2	 	 Family Transfers
	  	 	9	  
	9.	 	 RESTRICTED STOCK
	  	 	10	  
		 	9.1	 	 Grant of Restricted Stock
	  	 	10	  
		 	9.2	 	 Restrictions
	  	 	10	  
		 	9.3	 	 Restricted Stock Certificates
	  	 	10	  
		 	9.4	 	 Rights of Holders of Restricted Stock
	  	 	11	  
		 	9.5	 	 Termination of Service
	  	 	11	  
		 	9.6	 	 Purchase and Delivery of Stock
	  	 	11	  
	10	 	 FORM OF PAYMENT
	  	 	12	  
		 	10.1	 	 General Rule
	  	 	12	  
		 	10.2	 	 Surrender of Stock
	  	 	12	  
		 	10.3	 	 Cashless Exercise
	  	 	12	  
		 	10.4	 	 Promissory Note
	  	 	12	  
	11.	 	 WITHHOLDING TAXES
	  	 	12	  
	12.	 	 RESTRICTIONS ON TRANSFER OF SHARES OF STOCK
	  	 	13	  
		 	12.1	 	 Right of First Refusal
	  	 	13	  
		 	12.2	 	 Repurchase and Other Rights
	  	 	13	  

  
 -i-

									
		 	12.3	 	 Installment Payments
	  	 	14	  
		 		 	12.3.1    General Rule	  	 	14	  
		 		 	12.3.2    Exception in the Case of Stock Repurchase Right	  	 	14	  
		 	12.4	 	 Publicly Traded Stock
	  	 	14	  
		 	12.5	 	 Legend
	  	 	14	  
	13.	 	 PARACHUTE LIMITATIONS
	  	 	14	  
	14.	 	 REQUIREMENTS OF LAW
	  	 	15	  
		 	14.1	 	 General
	  	 	15	  
		 	14.2	 	 Rule 16b-3
	  	 	16	  
		 	14.3	 	 Financial Reports
	  	 	16	  
	15.	 	 EFFECT OF CHANGES IN CAPITALIZATION
	  	 	16	  
		 	15.1	 	 Changes in Stock
	  	 	16	  
		 	15.2	 	 Reorganization in Which the Company Is the Surviving Entity and in Which No Change of Control Occurs
	  	 	17	  
		 	15.3	 	 Reorganization, Sale of Assets or Sale of Stock Which Involves a Change of Control
	  	 	17	  
		 	15.4	 	 Adjustments
	  	 	17	  
		 	15.5	 	 No Limitations on Company
	  	 	18	  
	16.	 	 DURATION AND AMENDMENTS
	  	 	18	  
		 	16.1	 	 Term of the Plan
	  	 	18	  
		 	16.2	 	 Amendment and Termination of the Plan
	  	 	18	  
	17.	 	 GENERAL PROVISIONS
	  	 	18	  
		 	17.1	 	 Disclaimer of Rights
	  	 	18	  
		 	17.2	 	 Nonexclusivity of the Plan
	  	 	19	  
		 	17.3	 	 Captions
	  	 	19	  
		 	17.4	 	 Other Award Agreement Provisions
	  	 	19	  
		 	17.5	 	 Number and Gender
	  	 	19	  
		 	17.6	 	 Severability
	  	 	19	  
		 	17.7	 	 Governing Law
	  	 	19	  
	18.	 	 EXECUTION
	  	 	20	  

  
 -ii-

 GLYCOMIMETICS, INC. 

2003 STOCK INCENTIVE PLAN 
 GlycoMimetics, Inc., a Delaware corporation (the “Company”), sets forth herein the terms of its 2003 Stock Incentive Plan (the “Plan”) as follows: 

 

	1.	PURPOSE 

 The Plan is
intended to enhance the Company’s and its Affiliates’ (as defined herein) ability to attract and retain highly qualified officers, directors, key employees, and other persons, and to motivate such officers, directors, key employees, and
other persons to serve the Company and its Affiliates and to expend maximum effort to improve the business results and earnings of the Company, by providing to such officers, directors, key employees and other persons an opportunity to acquire or
increase a direct proprietary interest in the operations and future success of the Company. To this end, the Plan provides for the grant of stock options and restricted stock in accordance with the terms hereof. Stock options granted under the Plan
may be nonqualified stock options or incentive stock options, as provided herein. 
  

	2.	DEFINITIONS 

 For purposes
of interpreting the Plan and related documents (including Award Agreements), the following definitions shall apply: 
 2.1
“Affiliate” means, with respect to the Company, any company or other trade or business that controls, is controlled by or is under common control with the Company within the meaning of Rule 405 of Regulation C under the
Securities Act, including, without limitation, any Subsidiary. 
 2.2 “Award Agreement” means the stock
option agreement, restricted stock agreement or other written agreement between the Company and a Grantee that evidences and sets out the terms and conditions of a Grant. 
 2.3 “Benefit Arrangement” shall have the meaning set forth in Section 13 hereof. 
 2.4 “Board” means the Board of Directors of the Company. 

2.5 “Cause” means, as determined by the Board and unless otherwise provided in an applicable employment agreement
with the Company or an Affiliate, (i) gross negligence or willful misconduct in connection with the performance of duties; (ii) conviction of a criminal offense (other than minor traffic offenses); or (iii) material breach of any term
of any employment, consulting or other services, confidentiality, intellectual property or non-competition agreements, if any, between the Service Provider and the Company or an Affiliate. 

2.6 “Change of Control” means (i) the dissolution or liquidation of the Company or a merger, consolidation,
or reorganization of the Company with one or more other entities in 

  
 -1-

 
which the Company is not the surviving entity, (ii) a sale of substantially all of the assets of the Company to another person or entity, or (iii) any transaction (including without
limitation a merger or reorganization in which the Company is the surviving entity) which results in any person or entity (other than persons who are shareholders or Affiliates immediately prior to the transaction) owning 60% or more of the combined
voting power of all classes of stock of the Company. 
 2.7 “Code” means the Internal Revenue Code of
1986, as now in effect or as hereafter amended. 
 2.8 “Committee” means a committee of, and designated
from time to time by resolution of, the Board, which shall consist of one or more members of the Board. 
 2.9
“Company” means GlycoMimetics, Inc. 
 2.10 “Disability” means the Grantee is
unable to perform each of the essential duties of such Grantee’s position by reason of a medically determinable physical or mental impairment which is potentially permanent in character or which can be expected to last for a continuous period
of not less than 12 months; provided, however, that, with respect to rules regarding expiration of an Incentive Stock Option following termination of the Grantee’s Service, Disability shall mean the Grantee is unable to engage in any
substantial gainful activity by reason of a medically determinable physical or mental impairment which can be expected to result in death or which has lasted or can be expected to last for a continuous period of not less than 12 months. 

2.11 “Effective Date” means May 20, 2003, the date the Plan is approved by the Board. 

2.12 “Exchange Act” means the Securities Exchange Act of 1934, as now in effect or as hereafter amended.

 2.13 “Fair Market Value” means the value of a share of Stock, determined as follows: if on the Grant
Date or other determination date the Stock is listed on an established national or regional stock exchange, is admitted to quotation on The Nasdaq Stock Market, Inc., or is publicly traded on an established securities market, the Fair Market Value
of a share of Stock shall be the closing price of the Stock on such exchange or in such market (if there is more than one such exchange or market the Board shall determine the appropriate exchange or market) on the Grant Date or such other
determination date (or if there is no such reported closing price, the Fair Market Value shall be the mean between the highest bid and lowest asked prices or between the high and low sale prices on such trading day) or, if no sale of Stock is
reported for such trading day, on the next preceding day on which any sale shall have been reported. If the Stock is not listed on such an exchange, quoted on such system or traded on such a market, Fair Market Value shall be the value of the Stock
as determined by the Board in good faith. 
 2.14 “Family Member” means a person who is a spouse, former
spouse, child, stepchild, grandchild, parent, stepparent, grandparent, niece, nephew, mother-in-law, father-in-law, son-in-law, daughter-in-law, brother, sister, brother-in-law, or sister-in-law, including adoptive relationships, of the Grantee, any
person sharing the Grantee’s household (other than a 

  
 -2-

 
tenant or employee), a trust in which any one or more these persons have more than fifty percent of the beneficial interest, a foundation in which any one or more of these persons (or the
Grantee) control the management of assets, and any other entity in which one or more these persons (or the Grantee) own more than fifty percent of the voting interests, provided, however, that to the extent required by applicable law, the term
Family Member shall be limited to a person who is a spouse, former spouse, child, stepchild, grandchild, parent, stepparent, grandparent, mother-in-law, father-in-law, son-in-law, daughter-in-law, brother, sister, brother-in-law, or sister-in-law,
including adoptive relationships, of the Grantee or a trust or foundation for the exclusive benefit of any one or more of these persons. 
 2.15 “Grant” means an award of an Option or Restricted Stock under the Plan. 
 2.16 “Grant Date” means, as determined by the Board, the latest to occur of (i) the date as of which the Board approves a Grant, (ii) the date on which the recipient of a
Grant first becomes eligible to receive a Grant under Section 5 hereof, or (iii) such other date as may be specified by the Board. 
 2.17 “Grantee” means a person who receives or holds an Option or Restricted Stock under the Plan. 
 2.18 “Incentive Stock Option” means an “incentive stock option” within the meaning of Section 422 of the Code, or the corresponding provision of any subsequently
enacted tax statute, as amended from time to time. 
 2.19 “Nonqualified Stock Option” means a stock
option that is not an Incentive Stock Option. 
 2.20 “Option” means an option to purchase one or more
shares of Stock pursuant to the Plan. 
 2.21 “Option Price” means the purchase price for each share of
Stock subject to an Option. 
 2.22 “Other Agreement” shall have the meaning set forth in
Section 13 hereof. 
 2.23 “Plan” means this GlycoMimetics, Inc. 2003 Stock Incentive Plan.

 2.24 “Purchase Price” means the purchase price for each share of Stock pursuant to a Grant of
Restricted Stock. 
 2.25 “Reporting Person” means a person who is required to file reports under
Section 16(a) of the Exchange Act. 
 2 26 “Restricted Stock” means shares of Stock, awarded to a
Grantee pursuant to Section 9 hereof, that are subject to restrictions and to a risk of forfeiture. 
 2.27
“Securities Act” means the Securities Act of 1933, as now in effect or as hereafter amended. 

  
 -3-

 2.28 “Service” means service as an employee, officer, director or
other Service Provider of the Company or an Affiliate. Unless otherwise stated in the applicable Award Agreement, a Grantee’s change in position or duties shall not result in interrupted or terminated Service, so long as such Grantee continues
to be an employee, officer, director or other Service Provider of the Company or an Affiliate. Subject to the preceding sentence, whether a termination of Service shall have occurred for purposes of the Plan shall be determined by the Board, which
determination shall be final, binding and conclusive. 
 2.29 “Service Provider” means an employee,
officer or director of the Company or an Affiliate, or a consultant or adviser currently providing services to the Company or an Affiliate. 
 2.30 “Stock” means the common stock, $.001 par value per share, of the Company. 
 2.31 “Subsidiary” means any “subsidiary corporation” of the Company within the meaning of Section 424(f) of the Code. 

2.32 “Ten-Percent Stockholder” means an individual who owns more than ten percent (10%) of the total
combined voting power of all classes of outstanding stock of the Company, its parent or any of its Subsidiaries. In determining stock ownership, the attribution rules of Section 424(d) of the Code shall be applied. 

 

	3.	ADMINISTRATION OF THE PLAN 

  

	 	3.1	Board. 

 The Board shall
have such powers and authorities related to the administration of the Plan as are consistent with the Company’s certificate of incorporation and by-laws and applicable law. The Board shall have full power and authority to take all actions and
to make all determinations required or provided for under the Plan, any Grant or any Award Agreement, and shall have full power and authority to take all such other actions and make all such other determinations not inconsistent with the specific
terms and provisions of the Plan that the Board deems to be necessary or appropriate to the administration of the Plan, any Grant or any Award Agreement. All such actions and determinations shall be by the affirmative vote of a majority of the
members of the Board present at a meeting or by unanimous consent of the Board executed in writing in accordance with the Company’s certificate of incorporation and by-laws and applicable law The interpretation and construction by the Board of
any provision of the Plan, any Grant or any Award Agreement shall be final, binding and conclusive. To the extent permitted by law, the Board may delegate its authority under the Plan to a member of the Board or an executive officer of the Company
who is a member of the Board. 
  

	 	3.2	Committee. 

 The Board
from time to time may delegate to one or more Committees such powers and authorities related to the administration and implementation of the Plan, as set forth in Section 3.1 above and in other applicable provisions, as the Board shall
determine, consistent with the certificate of incorporation and by-laws of the Company and applicable law. In the event that the 

  
 -4-

 
Plan, any Grant or any Award Agreement entered into hereunder provides for any action to be taken by or determination to be made by the Board, such action may be taken by or such determination
may be made by the applicable Committee if the power and authority to do so has been delegated to the Committee by the Board as provided for in Section 3.1. Unless otherwise expressly determined by the Board, any such action or
determination by the Committee shall be final, binding and conclusive. To the extent permitted by law, the Committee may delegate its authority under the Plan to a member of the Board or an executive officer of the Company. 

 

	 	3.3	Grants. 

 Subject to the
other terms and conditions of the Plan, the Board shall have full and final authority to: 
  

	 	(i)	designate Grantees, 

  

	 	(ii)	determine the type or types of Grants to be made to a Grantee, 

  

	 	(iii)	determine the number of shares of Stock to be subject to a Grant, 

  

	 	(iv)	establish the terms and conditions of each Grant (including, but not limited to, the Option Price of any Option, the nature and duration of any restriction or condition
(or provision for lapse thereof) relating to the vesting, exercise, transfer, or forfeiture of a Grant or the shares of Stock subject thereto, and any terms or conditions that may be necessary to qualify Options as Incentive Stock Options),

  

	 	(v)	prescribe the form of each Award Agreement evidencing a Grant, and 

  

	 	(vi)	amend, modify, or supplement the terms of any outstanding Grant. 

 Such authority specifically includes the authority, in order to effectuate the purposes of the Plan but without amending the Plan, to modify Grants to eligible individuals who are foreign nationals or are
individuals who are employed outside the United States to recognize differences in local law, tax policy, or custom. As a condition to any Grant, the Board shall have the right, at its discretion, to require Grantees to return to the Company Grants
previously awarded under the Plan. Subject to the terms and conditions of the Plan, any such subsequent Grant shall be upon such terms and conditions as are specified by the Board at the time the new Grant is made. The Board shall have the right, in
its discretion, to make Grants in substitution or exchange for any other grant under another plan of the Company, any Affiliate, or any business entity to be acquired by the Company or an Affiliate. The Company may retain the right in an Award
Agreement to cause a forfeiture of the gain realized by a Grantee on account of actions taken by the Grantee in violation or breach of or in conflict with any non-competition agreement, any agreement prohibiting solicitation of employees or clients
of the Company or any Affiliate thereof or any confidentiality obligation with respect to the Company or any Affiliate thereof or otherwise in competition with the Company or any Affiliate thereof, to the extent specified in such Award Agreement
applicable to the Grantee. Furthermore, the Company may annul a Grant if the Grantee is an employee of the Company or an Affiliate thereof and is terminated for Cause as defined in the applicable Award Agreement or the Plan, as applicable.

  
 -5-

	 	3.4	Deferral Arrangement. 

The Board may permit or require the deferral of any award payment into a deferred compensation arrangement, subject to such rules and
procedures as it may establish, which may include provisions for the payment or crediting of interest or dividend equivalents, including converting such credits into deferred Stock equivalents and restricting deferrals to comply with hardship
distribution rules affecting 401(k) plans. 
  

	 	3.5	No Liability. 

 No member
of the Board or of the Committee shall be liable for any action or determination made in good faith with respect to the Plan or any Grant or Award Agreement. 
  

	4.	STOCK SUBJECT TO THE PLAN 

Subject to adjustment as provided in Section 15 hereof and the limitation of the next paragraph relating to Restricted Stock,
the number of shares of Stock available for issuance under the Plan shall be 1,520,000. Stock issued or to be issued under the Plan shall be authorized but unissued shares or, to the extent permitted by applicable law, issued shares that have been
reacquired by the Company. If any shares covered by a Grant are not purchased or are forfeited, or if a Grant otherwise terminates without delivery of any Stock subject thereto, then the number of shares of Stock counted against the aggregate number
of shares available under the Plan with respect to such Grant shall, to the extent of any such forfeiture or termination, again be available for making Grants under the Plan. If the exercise price of any Option granted under the Plan is satisfied by
tendering shares of Stock to the Company (by either actual delivery or by attestation), only the number of shares of Stock issued net of the shares of Stock tendered shall be deemed delivered for purposes of determining the maximum number of shares
of Stock available for delivery under the Plan. 
  

	5.	GRANT ELIGIBILITY 

  

	 	5.1	Employees and Other Service Providers. 

 Grants (including Grants of Incentive Stock Options, subject to Section 5.3) may be made under the Plan to any employee, officer or director of, or other Service Provider providing services
to, the Company or any Affiliate. To the extent required by applicable state law, Grants within certain states may be limited to employees and officers or employees, officers and directors. 

 

	 	5.2	Successive Grants. 

 An
eligible person may receive more than one Grant, subject to such restrictions as are provided herein. 

  
 -6-

	 	5.3	Limitations on Incentive Stock Options. 

 An Option shall constitute an Incentive Stock Option only (i) if the Grantee of such Option is an employee of the Company or any Subsidiary of the Company; (ii) to the extent specifically
provided in the related Award Agreement; and (iii) to the extent that the aggregate Fair Market Value (determined at the time the Option is granted) of the shares of Stock with respect to which all Incentive Stock Options held by such Grantee
become exercisable for the first time during any calendar year (under the Plan and all other plans of the Grantee’s employer and its affiliates) does not exceed $100,000. This limitation shall be applied by taking Options into account in the
order in which they were granted. 
  

	6.	AWARD AGREEMENT 

 Each
Grant pursuant to the Plan shall be evidenced by an Award Agreement, in such form or forms as the Board shall from time to time determine, which specifies the number of shares subject to the Grant and provides for adjustment in accordance with
Section 15. Award Agreements granted from time to time or at the same time need not contain similar provisions but shall be consistent with the terms of the Plan. Each Award Agreement evidencing a Grant of Options shall specify whether
such Options are intended to be Nonqualified Stock Options or Incentive Stock Options, and in the absence of such specification such options shall be deemed Nonqualified Stock Options. 

 

	7.	TERMS AND CONDITIONS OF OPTIONS 

  

	 	7.1	Option Price. 

 The Option
Price of each Option shall be fixed by the Board and stated in the Award Agreement evidencing such Option. In the case of an Incentive Stock Option the Option Price shall not be less than the Fair Market Value on the Grant Date of a share of Stock,
provided, however, that in the event that a Grantee is a Ten-Percent Stockholder, the Option Price of an Incentive Stock Option granted to such Grantee shall be not less than 110 percent of the Fair Market Value of a share of Stock on the Grant
Date. To the extent required by applicable law, in the case of a Nonqualified Stock Option, the Option Price shall be not less than 85 percent of the Fair Market Value on the Grant Date of a share of Stock, provided, however, that in the event that
a Grantee is a Ten-Percent Stockholder, the Option Price shall be not less than 110 percent of the Fair Market Value of a share of Stock on the Grant Date. In no case shall the Option Price of any Option be less than the par value of a share of
Stock. 
  

	 	7.2	Vesting. 

 Subject to
Sections 7.3 and 15.3 hereof, each Option granted under the Plan shall become exercisable at such times and under such conditions as shall be determined by the Board and stated in the Award Agreement For purposes of this
Section 7.2, fractional numbers of shares of Stock subject to an Option shall be rounded down to the next nearest whole number. To the extent required by applicable law, each Option shall become exercisable no less rapidly than the

  
 -7-

 
rate of twenty percent (20%) per year for each of the first five (5) years from the Grant Date based on continued Service. Subject to the preceding sentence, the Board may provide, for
example, in the Award Agreement for (i) accelerated exercisability of the Option in the event the Grantee’s Service terminates on account of death, Disability or another event, (ii) expiration of the Option prior to its term in the
event of the termination of the Grantee’s Service, (iii) immediate forfeiture of the Option in the event the Grantee’s Service is terminated for Cause or (iv) unvested Options to be exercised subject to the Company’s right of
repurchase with respect to unvested shares of Stock. 
  

	 	7.3	Term. 

 Each Option
granted under the Plan shall terminate, and all rights to purchase shares of Stock thereunder shall cease, upon the expiration of ten years from the Grant Date, or under such circumstances and on such date prior thereto as is set forth in the Plan
or as may be fixed by the Board and stated in the Award Agreement relating to such Option; provided, however, that in the event that the Grantee is a Ten-Percent Stockholder, an Option granted to such Grantee that is intended to be an Incentive
Stock Option shall not be exercisable after the expiration of five years from its Grant Date. 
  

	 	7.4	Exercise of Options on Termination of Service. 

 Each Award Agreement shall set forth the extent to which the Grantee shall have the right to exercise the Option following termination of the Grantee’s Service. Such provisions shall be determined in
the sole discretion of the Board, need not be uniform among all Options issued pursuant to the Plan, and may reflect distinctions based on the reasons for termination of Service. Notwithstanding the foregoing, to the extent required by applicable
law, each Option shall provide that the Grantee shall have the right to exercise the vested portion of any Option held at termination for at least thirty (30) days following termination of Service with the Company for any reason (other than for
Cause), and that the Grantee shall have the right to exercise the Option for at least six (6) months if the Grantee’s Service terminates due to death or Disability. 

 

	 	7.5	Limitations on Exercise of Option. 

 Notwithstanding any other provision of the Plan, in no event may any Option be exercised, in whole or in part, prior to the date the Plan is approved by the shareholders of the Company, or after ten years
following the Grant Date, or after the occurrence of an event referred to in Section 15 hereof which results in termination of the Option. 
  

	 	7.6	Exercise Procedure. 

 An
Option that is exercisable may be exercised by the Grantee’s delivery to the Company of written notice of exercise on any business day, at the Company’s principal office, on the form specified by the Company. Such notice shall specify the
number of shares of Stock with respect to which the Option is being exercised and shall be accompanied by payment in full of the Option Price of the shares for which the Option is being exercised. The minimum number of

  
 -8-

 
shares of Stock with respect to which an Option may be exercised, in whole or in part, at any time shall be the lesser of (i) 100 shares or such lesser number set forth in the applicable
Award Agreement and (ii) the maximum number of shares available for purchase under the Option at the time of exercise. The Option Price shall be payable in a form described in Section 10. 

 

	 	7.7	Right of Holders of Options. 

 Unless otherwise stated in the applicable Award Agreement, an individual holding or exercising an Option shall have none of the rights of a shareholder (for example, the right to cash or dividend payments
or distributions attributable to the subject shares of Stock or to direct the voting of shares of Stock) until the shares of Stock covered thereby are fully paid and issued to such individual. 

 

	 	7.8	Delivery of Stock Certificates. 

 Promptly after the exercise of an Option by a Grantee and the payment in full of the Option Price, such Grantee shall be entitled to the issuance of a stock certificate or certificates evidencing such
Grantee’s ownership of the shares of Stock purchased upon such exercise of the Option. 
  

	8.	TRANSFERABILITY OF OPTIONS 

  

	 	8.1	Transferability of Options. 

 Except as provided in Section 8.2, during the lifetime of a Grantee, only the Grantee (or, in the event of legal incapacity or incompetency, the Grantee’s guardian or legal
representative) may exercise an Option. Except as provided in Section 8.2, no Option shall be assignable or transferable by the Grantee to whom it is granted, other than by will or the laws of descent and distribution. 

 

	 	8.2	Family Transfers. 

 If
authorized in the applicable Award Agreement, a Grantee may transfer, not for value, all or part of an Option that is not an Incentive Stock Option to any Family Member For the purpose of this Section 8.2, a “not for value”
transfer is a transfer which is (i) a gift, (ii) a transfer under a domestic relations order in settlement of marital property rights; or (iii) unless applicable law does not permit such transfers, a transfer to an entity in which
more than fifty percent of the voting interests are owned by Family Members (or the Grantee) in exchange for an interest in that entity. Following a transfer under this Section 8.2, any such Option shall continue to be subject to the
same terms and conditions as were applicable immediately prior to transfer, and shares of Stock acquired pursuant to the Option shall be subject to the same restrictions on transfer of shares as would have applied to the Grantee. Subsequent
transfers of transferred Options are prohibited except to Family Members of the original Grantee in accordance with this Section 8.2 or by will or the laws of descent and distribution. The events of termination of Service under an Option
shall continue to be applied with respect to the original 

  
 -9-

 
Grantee, following which the Option shall be exercisable by the transferee only to the extent, and for the periods specified in the applicable Award Agreement, and the shares may be subject to
repurchase by the Company or its assignee. 
  

	9.	RESTRICTED STOCK 

  

	 	9.1	Grant of Restricted Stock. 

The Board may from time to time grant Restricted Stock to persons eligible to receive Grants under Section 5 hereof, subject
to such restrictions, conditions and other terms as the Board may determine. 
  

	 	9.2	Restrictions. 

 At the
time a Grant of Restricted Stock is made, the Board shall establish a restriction period applicable to such Restricted Stock. Each Grant of Restricted Stock may be subject to a different restriction period. The Board may, in its sole discretion, at
the time a Grant of Restricted Stock is made, prescribe conditions that must be satisfied prior to the expiration of the restriction period, including the satisfaction of corporate or individual performance objectives or continued Service, in order
that all or any portion of the Restricted Stock shall vest. To the extent required by applicable law, the vesting restrictions applicable to a Grant of Restricted Stock shall lapse no less rapidly than the rate of twenty percent (20%) per year
for each of the first five (5) years from the Grant Date, based on continued Service. 
 The Board also may, in its sole
discretion, shorten or terminate the restriction period or waive any of the conditions applicable to all or a portion of the Restricted Stock. The Restricted Stock may not be sold, transferred, assigned, pledged or otherwise encumbered or disposed
of during the restriction period or prior to the satisfaction of any other conditions prescribed by the Board with respect to such Restricted Stock; provided, however, that if authorized in the applicable Award Agreement, the Grantee
may transfer Restricted Stock to a Family Member in a “not for value” transfer, as such term is defined in Section 8.2 hereof. In the case of a transfer to a Family Member, the events of termination of Service with regard to a
Restricted Stock Award shall continue to be applied with respect to the original Grantee, following which the Restricted Stock will terminate in accordance with its terms, and the shares will be subject to repurchase by the Company or its assignee.

  

	 	9.3	Restricted Stock Certificates. 

 The Company shall issue, in the name of each Grantee to whom Restricted Stock has been granted, stock certificates representing the total number of shares of Restricted Stock granted to the Grantee, as
soon as reasonably practicable after the Grant Date. The Board may provide in an Award Agreement that either (i) the Secretary of the Company shall hold such certificates for the Grantee’s benefit until such time as the Restricted Stock is
forfeited to the Company, or the restrictions lapse, or (ii) such certificates shall be delivered to the Grantee, provided, however, that such certificates shall bear a legend or legends that complies with the applicable securities laws and
regulations and makes appropriate reference to the restrictions imposed under the Plan and the Award Agreement. 

  
 -10-

	 	9.4	Rights of Holders of Restricted Stock. 

 Unless the Board otherwise provides in an Award Agreement, holders of Restricted Stock shall have the right to vote such Stock and the right to receive any dividends declared or paid with respect to such
Stock. The Board may provide that any dividends paid on Restricted Stock must be reinvested in shares of Stock, which may or may not be subject to the same vesting conditions and restrictions applicable to such Restricted Stock. All distributions,
if any, received by a Grantee with respect to Restricted Stock as a result of any stock split, stock dividend, combination of shares, or other similar transaction shall be subject to the restrictions applicable to the original Grant. 

 

	 	9.5	Termination of Service. 

Unless otherwise provided by the Board in the applicable Award Agreement, upon the termination of a Grantee’s Service with the
Company or an Affiliate, any shares of Restricted Stock held by such Grantee that have not vested, or with respect to which all applicable restrictions and conditions have not lapsed, shall immediately be deemed forfeited. Upon forfeiture of
Restricted Stock, the Grantee shall have no further rights with respect to such Grant, including but not limited to any right to vote Restricted Stock or any right to receive dividends with respect to shares of Restricted Stock. 

 

	 	9.6	Purchase and Delivery of Stock. 

 The Grantee shall be required to purchase the Restricted Stock from the Company at a Purchase Price equal to the greater of (i) the aggregate par value of the shares of Stock represented by such
Restricted Stock or (ii) the Purchase Price, if any, specified in the Award Agreement relating to such Restricted Stock. The Purchase Price shall be payable in a form described in Section 10 or, in the discretion of the Board, in
consideration for past Services rendered to the Company or an Affiliate. To the extent required by applicable law, the Purchase Price of a share of Restricted Stock shall be not less than 85 percent of the Fair Market Value on the Grant Date of a
share of Stock; provided, however, that in the event that the Grantee is a Ten-Percent Stockholder, the Purchase Price shall be not less than 100 percent of the Fair Market Value on the Grant Date of a share of Stock. 

Upon the expiration or termination of the restriction period and the satisfaction of any other conditions prescribed by the Board, having
properly paid the Purchase Price, the restrictions applicable to shares of Restricted Stock shall lapse, and, unless otherwise provided in the Award Agreement, a stock certificate for such shares shall be delivered, free of all such restrictions, to
the Grantee or the Grantee’s beneficiary or estate, as the case may be. 

  
 -11-

	10.	FORM OF PAYMENT 

  

	 	10.1	General Rule. 

 Payment of
the Option Price for the shares purchased pursuant to the exercise of an Option or the Purchase Price for Restricted Stock shall be made in cash or in cash equivalents acceptable to the Company. 

 

	 	10.2	Surrender of Stock. 

 To
the extent the Award Agreement so provides, payment of the Option Price for shares purchased pursuant to the exercise of an Option or the Purchase Price for Restricted Stock may be made all or in part through the tender to the Company of shares of
Stock, which shares, if acquired from the Company, shall have been held for at least six months at the time of tender and which shall be valued, for purposes of determining the extent to which the Option Price or Purchase Price has been paid
thereby, at their Fair Market Value on the date of exercise. 
  

	 	10.3	Cashless Exercise. 

 With
respect to an Option only (and not with respect to Restricted Stock), to the extent the Award Agreement so provides and the shares of Stock have become publicly traded, payment of the Option Price for shares purchased pursuant to the exercise of an
Option may be made all or in part by delivery (on a form acceptable to the Board) of an irrevocable direction to a licensed securities broker acceptable to the Company to sell shares of Stock and to deliver all or part of the sales proceeds to the
Company in payment of the Option Price and any withholding taxes described in Section 11. 
  

	 	10.4	Promissory Note. 

 To the
extent the Award Agreement so provides, payment of the Option Price for shares purchased pursuant to the exercise of an Option or the Purchase Price for Restricted Stock may be made all or in part with a full recourse promissory note executed by the
Grantee. The interest rate and other terms and conditions of such note shall be determined by the Board. The Board may require that the Grantee pledge the Stock subject to the Grant for the purpose of securing payment of the note. In no event shall
stock certificate(s) representing the Stock be released to the Grantee until such note is paid in full. 
  

	11.	WITHHOLDING TAXES 

 The
Company or any Affiliate, as the case may be, shall have the right to deduct from payments of any kind otherwise due to a Grantee any Federal, state, or local taxes of any kind required by law to be withheld with respect to the vesting of or other
lapse of restrictions applicable to Restricted Stock or upon the issuance of any shares of Stock upon the exercise of an Option. At the time of such vesting, lapse, or exercise, the Grantee shall pay to the Company or Affiliate, as the case may be,
any amount that the Company or Affiliate may reasonably 

  
 -12-

 
determine to be necessary to satisfy such withholding obligation. Subject to the prior approval of the Company or the Affiliate, which may be withheld by the Company or the Affiliate, as the case
may be, in its sole discretion, the Grantee may elect to satisfy such obligations, in whole or in part, (i) by causing the Company or the Affiliate to withhold shares of Stock otherwise issuable to the Grantee or (ii) by delivering to the
Company or the Affiliate shares of Stock already owned by the Grantee. The shares of Stock so delivered or withheld shall have an aggregate Fair Market Value equal to such withholding obligations. The Fair Market Value of the shares of Stock used to
satisfy such withholding obligation shall be determined by the Company or the Affiliate as of the date that the amount of tax to be withheld is to be determined A Grantee who has made an election pursuant to this Section 11 may satisfy
his or her withholding obligation only with shares of Stock that are not subject to any repurchase, forfeiture, unfulfilled vesting, or other similar requirements. 
  

	12.	RESTRICTIONS ON TRANSFER OF SHARES OF STOCK 

  

	 	12.1	Right of First Refusal. 

Subject to Section 12.4 below, a Grantee (or such other individual who is entitled to exercise an Option or otherwise acquire
shares pursuant to a Grant under the terms of this Plan) shall not sell, pledge, assign, gift, transfer, or otherwise dispose of any shares of Stock acquired pursuant to a Grant to any person or entity without first offering such shares to the
Company for purchase on the same terms and conditions as those offered to the proposed transferee. The Company may assign its right of first refusal under this Section 12.1 in whole or in part, to (1) any holder of stock or other
securities of the Company (a “Stockholder”), (2) any Affiliate or (3) any other person or entity that the Board determines has a sufficient relationship with or interest in the Company. The Company shall give reasonable written
notice to the Grantee of any such assignment of its rights. The restrictions of this Section 12.1 apply to any person to whom Stock that was originally acquired pursuant to a Grant is sold, pledged, assigned, bequeathed, gifted,
transferred or otherwise disposed of, without regard to the number of such subsequent transferees or the manner in which they acquire the Stock, but the restrictions of this Section 12.1 do not apply to a transfer of Stock that occurs as
a result of the death of the Grantee or of any subsequent transferee (but shall apply to the executor, the administrator or personal representative, the estate, and the legatees, beneficiaries and assigns thereof). Except as otherwise provided in
the Award Agreement for a Grant of Restricted Stock, the foregoing provisions shall not apply to Grants of Restricted Stock hereunder. 
  

	 	12.2	Repurchase and Other Rights. 

 Stock issued upon exercise of an Option or pursuant to the Grant of Restricted Stock may be subject to such right of repurchase or other transfer restrictions as the Board may determine, consistent with
applicable law. Any such additional restriction shall be set forth in the Award Agreement. 

  
 -13-

	 	12.3	Installment Payments. 

  

	 	12.3.1	General Rule. 

 In the
case of any purchase of Stock or an Option under this Section 12, the Company or its permitted assignee may pay the Grantee, transferee of the Option or other registered owner of the Stock the purchase price in three or fewer annual
installments. Interest shall be credited on the installments at the applicable federal rate (as determined for purposes of Section 1274 of the Code) in effect on the date on which the purchase is made. The Company or its permitted assignee
shall pay at least one-third of the total purchase price each year, plus interest on the unpaid balance, with the first payment being made on or before the 60th day after the purchase. 

 

	 	12.3.2	Exception in the Case of Stock Repurchase Right. 

 If an Award Agreement authorizes, upon the Grantee’s termination of Service, the repurchase of shares of Stock acquired by the Grantee pursuant to the exercise of an Option or under a Grant of
Restricted Stock, to the extent required by applicable law, payment shall be made in cash or by cancellation of indebtedness within the later of 90 days from the date of termination of Service or 90 days from the date of exercise or purchase, as the
case may be. 
  

	 	12.4	Publicly Traded Stock. 

If the Stock is listed on an established national or regional stock exchange or is admitted to quotation on The Nasdaq Stock Market, Inc.,
or is publicly traded in an established securities market, the foregoing transfer restrictions of Sections 12.1 and 12.2 shall terminate as of the first date that the Stock is so listed, quoted or publicly traded. 

 

	 	12.5	Legend. 

 In order to
enforce the restrictions imposed upon shares of Stock under this Plan or as provided in an Award Agreement, the Board may cause a legend or legends to be placed on any certificate representing shares issued pursuant to this Plan that complies with
the applicable securities laws and regulations and makes appropriate reference to the restrictions imposed under it. 
  

	13.	PARACHUTE LIMITATIONS 

Notwithstanding any other provision of this Plan or of any other agreement, contract, or understanding heretofore or hereafter entered
into by a Grantee with the Company or any Affiliate, except an agreement, contract, or understanding hereafter entered into that expressly modifies or excludes application of this paragraph (an “Other Agreement”), and notwithstanding any
formal or informal plan or other arrangement for the direct or indirect provision of compensation to the Grantee (including groups or classes of participants or beneficiaries of which the Grantee is a member), whether or not such compensation is
deferred, is in cash, or is in the form of a benefit to or for the Grantee (a “Benefit Arrangement”), if the Grantee is a “disqualified individual,” as defined in Section 280G(c) of the Code, any Options or Restricted

  
 -14-

 
Stock held by that Grantee and any right to receive any payment or other benefit under this Plan shall not become exercisable or vested (i) to the extent that such right to exercise,
vesting, payment, or benefit, taking into account all other rights, payments, or benefits to or for the Grantee under this Plan, all Other Agreements, and all Benefit Arrangements, would cause any payment or benefit to the Grantee under this Plan to
be considered a “parachute payment” within the meaning of Section 280G(b)(2) of the Code as then in effect (a “Parachute Payment”) and (ii) if, as a result of receiving a Parachute Payment, the aggregate after-tax
amounts received by the Grantee from the Company under this Plan, all Other Agreements, and all Benefit Arrangements would be less than the maximum after-tax amount that could be received by the Grantee without causing any such payment or benefit to
be considered a Parachute Payment. In the event that the receipt of any such right to exercise, vesting, payment, or benefit under this Plan, in conjunction with all other rights, payments, or benefits to or for the Grantee under any Other Agreement
or any Benefit Arrangement would cause the Grantee to be considered to have received a Parachute Payment under this Plan that would have the effect of decreasing the after-tax amount received by the Grantee as described in clause (ii) of the
preceding sentence, then the Grantee shall have the right, in the Grantee’s sole discretion, to designate those rights, payments, or benefits under this Plan, any Other Agreements, and any Benefit Arrangements that should be reduced or
eliminated so as to avoid having the payment or benefit to the Grantee under this Plan be deemed to be a Parachute Payment. 
  

	14.	REQUIREMENTS OF LAW 

  

	 	14.1	General. 

 The Company
shall not be required to sell or issue any shares of Stock under any Grant if the sale or issuance of such shares would constitute a violation by the Grantee, any other individual exercising a right emanating from such Grant, or the Company of any
provision of any law or regulation of any governmental authority, including without limitation any federal or state securities laws or regulations. If at any time the Company shall determine, in its discretion, that the listing, registration or
qualification of any shares subject to a Grant upon any securities exchange or under any governmental regulatory body is necessary or desirable as a condition of, or in connection with, the issuance or purchase of shares hereunder, no shares of
Stock may be issued or sold to the Grantee or any other individual exercising an Option pursuant to such Grant unless such listing, registration, qualification, consent or approval shall have been effected or obtained free of any conditions not
acceptable to the Company, and any delay caused thereby shall in no way affect the date of termination of the Grant. Specifically, in connection with the Securities Act, upon the exercise of any right emanating from such Grant or the delivery of any
shares of Restricted Stock, unless a registration statement under the Securities Act is in effect with respect to the shares of Stock covered by such Grant, the Company shall not be required to sell or issue such shares unless the Board has received
evidence satisfactory to it that the Grantee or any other individual exercising an Option may acquire such shares pursuant to an exemption from registration under the Securities Act. Any determination in this connection by the Board shall be final,
binding, and conclusive. The Company may, but shall in no event be obligated to, register any securities covered hereby pursuant to the Securities Act The Company shall not be obligated to take any affirmative action in order to cause the exercise
of an Option or the issuance of shares of Stock pursuant to the Plan to comply with any law or regulation of any 

  
 -15-

 
governmental authority. As to any jurisdiction that expressly imposes the requirement that an Option shall not be exercisable until the shares of Stock covered by such Option are registered or
are exempt from registration, the exercise of such Option (under circumstances in which the laws of such jurisdiction apply) shall be deemed conditioned upon the effectiveness of such registration or the availability of such an exemption.

  

	 	14.2	Rule 16b-3. 

 During any
time when the Company has a class of equity security registered under Section 12 of the Exchange Act, it is the intent of the Company that Grants pursuant to the Plan and the exercise of Options granted hereunder will qualify for the exemption
provided by Rule 16b-3 under the Exchange Act. To the extent that any provision of the Plan or action by the Board does not comply with the requirements of Rule 16b-3, it shall be deemed inoperative to the extent permitted by law and deemed
advisable by the Board, and shall not affect the validity of the Plan. In the event that Rule 16b-3 is revised or replaced, the Board may exercise its discretion to modify this Plan in any respect necessary to satisfy the requirements of, or to take
advantage of any features of, the revised exemption or its replacement. 
  

	 	14.3	Financial Reports. 

 To
the extent required by applicable law, not less often than annually, the Company shall furnish to Grantees summary financial information including a balance sheet regarding the Company’s financial condition and results of operations, unless
such Grantees have duties with the Company that assure them access to equivalent information. Such financial statements need not be audited. 
  

	15.	EFFECT OF CHANGES IN CAPITALIZATION 

  

	 	15.1	Changes in Stock. 

 The
number of shares for which Grants of Options and Restricted Stock may be made under the Plan shall be proportionately increased or decreased for any increase or decrease in the number of shares of Stock on account of any recapitalization,
reclassification, stock split, reverse split, combination of shares, exchange of shares, stock dividend or other distribution payable in capital stock, or for any other increase or decrease in such shares effected without receipt of consideration by
the Company occurring after the Effective Date (any such event hereafter referred to as a “Corporate Event”). In addition, subject to the exception set forth in the last sentence of Section 15.4, the number of shares for which
Grants are outstanding shall be proportionately increased or decreased for any increase or decrease in the number of shares of Stock on account of any Corporate Event. Any such adjustment in outstanding Options shall not change the aggregate Option
Price payable with respect to shares that are subject to the unexercised portion of an Option outstanding but shall include a corresponding proportionate adjustment in the Option Price per share. The conversion of any convertible securities of the
Company shall not be treated as an increase in shares effected without receipt of consideration. In the event of any distribution to the Company’s stockholders of securities of any other entity or other assets (other than dividends payable in
cash or stock of the Company) without receipt of 

  
 -16-

 
consideration by the Company, the Company may, in such manner as the Company deems appropriate, adjust (i) the number and kind of shares subject to outstanding Awards and/or (ii) the
exercise price of outstanding Options to reflect such distribution. 
  

	 	15.2	Reorganization in Which the Company Is the Surviving Entity and in Which No Change of Control Occurs. 

Subject to the exception set forth in the last sentence of Section 15.4, if the Company shall be the surviving entity in any
reorganization, merger, or consolidation of the Company with one or more other entities and in which no Change of Control occurs, any Grant theretofore made pursuant to the Plan shall pertain to and apply solely to the common stock shares to which a
holder of the number of shares of Stock subject to such Grant would have been entitled immediately following such reorganization, merger, or consolidation, and in the case of Options, with a corresponding proportionate adjustment of the Option Price
per share so that the aggregate Option Price thereafter shall be the same as the aggregate Option Price of the shares remaining subject to the Option immediately prior to such reorganization, merger, or consolidation. Subject to any contrary
language in an Award Agreement evidencing a Grant of Restricted Stock, any restrictions applicable to such Restricted Stock shall apply as well to any replacement shares received by the Grantee as a result of the reorganization, merger or
consolidation. 
  

	 	15.3	Reorganization, Sale of Assets or Sale of Stock Which Involves a Change of Control. 

Subject to the exceptions set forth in the last sentence of Section 15.4, the Board in its discretion may, at the time a grant
of Restricted Stock or an Option is made, or at any time thereafter, provide that upon the occurrence of a Change of Control, one or more of the following actions shall be taken: (i) provide for the purchase of the Restricted Stock or the
Option upon the holder’s request for an amount of cash or other property that could have been received upon the exercise or realization of the Restricted Stock or the Option had the Restricted Stock or the Option been fully vested or currently
exercisable or payable, as applicable; (ii) adjust the terms of the Restricted Stock or the Option in a manner determined by the Board in good faith to reflect the Change of Control; (iii) cause the Restricted Stock or the Option to be
assumed, or new equivalent rights substituted therefore, by another entity; or (iv) make such other provision as the Board may consider equitable and in the best interests of the Company (including the termination of the Options immediately
prior to the occurrence of a Change of Control provided, that Optionees are given a reasonable period of time to exercise the Options with respect to at least fifty percent (50%) of the shares subject to the Options, notwithstanding any limits
on exercisability. 
  

	 	15.4	Adjustments. 

 Adjustments
under Section 15 related to shares of Stock or securities of the Company shall be made by the Board, whose determination in that respect shall be final, binding and conclusive. No fractional shares or other securities shall be issued
pursuant to any such adjustment, and any fractions resulting from any such adjustment shall be eliminated in each case by rounding downward to the nearest whole share. The Board may provide in the Award Agreements at the time of Grant, or any time
thereafter with the consent of the Grantee, for different provisions to apply to a Grant in place of those described in Sections 15.1, 15.2 and 15.3. 

  
 -17-

	 	15.5	No Limitations on Company. 

The making of Grants pursuant to the Plan shall not affect or limit in any way the right or power of the Company to make adjustments,
reclassifications, reorganizations, or changes of its capital or business structure or to merge, consolidate, dissolve, or liquidate, or to sell or transfer all or any part of its business or assets. 

 

	16.	DURATION AND AMENDMENTS 

  

	 	16.1	Term of the Plan. 

 The
Effective Date of this Plan is the date of its adoption by the Board, subject to the approval of the Plan by the Company’s stockholders. In the event that the stockholders fail to approve the Plan within twelve (12) months after its
adoption by the Board, any Grants already made shall be null and void, and no additional Grants shall be made after such date. The Plan shall terminate automatically ten (10) years after its adoption by the Board and may be terminated on any
earlier date as next provided. 
  

	 	16.2	Amendment and Termination of the Plan. 

 The Board may, at any time and from time to time, amend, suspend, or terminate the Plan as to any shares of Stock as to which Grants have not been made. An amendment to the Plan shall be contingent on
approval of the Company’s stockholders only to the extent required by applicable law, regulations or rules. No Grants shall be made after the termination of the Plan. No amendment, suspension, or termination of the Plan shall, without the
consent of the Grantee, alter or impair rights or obligations under any Grant theretofore awarded under the Plan. 
  

	17.	GENERAL PROVISIONS 

  

	 	17.1	Disclaimer of Rights 

 No
provision in the Plan or in any Grant or Award Agreement shall be construed to confer upon any individual the right to remain in the employ or service of the Company or any Affiliate, or to interfere in any way with any contractual or other right or
authority of the Company either to increase or decrease the compensation or other payments to any individual at any time, or to terminate any employment or other relationship between any individual and the Company or any Affiliate. The obligation of
the Company to pay any benefits pursuant to this Plan shall be interpreted as a contractual obligation to pay only those amounts described herein, in the manner and under the conditions prescribed herein. The Plan shall in no way be interpreted to
require the Company to transfer any amounts to a third party trustee or otherwise hold any amounts in trust or escrow for payment to any participant or beneficiary under the terms of the Plan. 

  
 -18-

	 	17.2	Nonexclusivity of the Plan 

Neither the adoption of the Plan nor the submission of the Plan to the shareholders of the Company for approval shall be construed as
creating any limitations upon the right and authority of the Board to adopt such other incentive compensation arrangements (which arrangements may be applicable either generally to a class or classes of individuals or specifically to a particular
individual or particular individuals) as the Board in its discretion determines desirable, including, without limitation, the granting of stock options otherwise than under the Plan. 

 

	 	17.3	Captions 

 The use of
captions in this Plan or any Award Agreement is for the convenience of reference only and shall not affect the meaning of any provision of the Plan or such Award Agreement. 

 

	 	17.4	Other Award Agreement Provisions 

 Each Grant awarded under the Plan may contain such other terms and conditions not inconsistent with the Plan as may be determined by the Board, in its sole discretion. 

 

	 	17.5	Number and Gender 

 With
respect to words used in this Plan, the singular form shall include the plural form, the masculine gender shall include the feminine gender, etc., as the context requires. 

 

	 	17.6	Severability 

 If any
provision of the Plan or any Award Agreement shall be determined to be illegal or unenforceable by any court of law in any jurisdiction, the remaining provisions hereof and thereof shall be severable and enforceable in accordance with their terms,
and all provisions shall remain enforceable in any other jurisdiction. 
  

	 	17.7	Governing Law 

 The
validity and construction of this Plan and the instruments evidencing the Grants awarded hereunder shall be governed by the laws of the State of Delaware other than any conflicts or choice of law rule or principle that might otherwise refer
construction or interpretation of this Plan and the instruments evidencing the Grants awarded hereunder to the substantive laws of any other jurisdiction. 

  
 -19-

	18.	EXECUTION 

 To record
adoption of the Plan by the Board on May 19, 2003, and approval of the Plan by the stockholders on May 20, 2003, the Company has caused its authorized officer to execute the Plan. 

 

			
	GLYCOMIMETICS, INC.
	
	/s/ Rachel K. King
	By:	 	Rachel K. King
	Title:	 	President and Chief Executive Officer

  
 -20-

 FIRST AMENDMENT TO THE 

GLYCOMIMETICS, INC. 2003 STOCK INCENTIVE PLAN 
 THIS FIRST AMENDMENT (the “First Amendment”) to the 2003 Stock Incentive Plan (the “Plan”) of GlycoMimetics, Inc., a Delaware corporation (the
“Corporation”), is hereby adopted effective as of June 19, 2006, as set forth below: 
 WHEREAS,
the Board of Directors of the Corporation (the “Board”) desires to modify and amend the Plan in accordance with the terms and conditions of this First Amendment; 

WHEREAS, Section 16.2 of the Plan provides that the Plan generally may be amended by the Board, Section 5A(7) of the
Amended and Restated Certificate of Incorporation of the Corporation provides that any increase in the number of shares available for issuance under the Plan in excess of 1,520,000 shares shall require the vote or prior written consent of the
holders of not less than sixty-one percent of the outstanding shares of Series A Convertible Preferred Stock of the Corporation, and Section 422 of the Internal Revenue Code of 1986, as amended, and the regulations thereunder require the
approval of such increase in shares available under the Plan by the holders of a majority of the outstanding voting stock of the Corporation; 
 WHEREAS, the Board has determined that it is in the best interests of the Corporation to increase the number of shares of the Corporation’s common stock, par value $0.01 (the “Common
Stock”), authorized for issuance under the Plan from 1,520,000 to 4,714,528 shares; and 
 WHEREAS, the Board
approved such increase in the number of shares of Common Stock available for issuance under the Plan at a meeting of the Board held on June 19, 2006 and the holders of a majority of the outstanding shares of Series A Convertible Preferred Stock
of the Corporation and the holders of a majority of the outstanding voting stock of the Corporation approved such increase by joint written consent on June 19, 2006. 
 NOW, THEREFORE, in consideration of the foregoing: 
 1. All capitalized
terms used herein shall have the meanings assigned to them in the Plan unless expressly defined otherwise in this First Amendment. 
 2. Except as otherwise specifically provided herein, all terms and conditions of the Plan shall apply to the interpretation and enforcement of this First Amendment as if explicitly set forth herein.

 3. The first sentence of Section 4 of the Plan is hereby amended by replacing the figure “1,520,000” with the
figure “4,714,528.” 

 4. Except as expressly amended hereby, the Plan shall remain in full force and effect. Any
references to the Plan in any documents shall refer to the Plan as amended hereby. 
 [SIGNATURE PAGE TO FOLLOW]

 IN WITNESS WHEREOF, the Corporation has executed this First Amendment as of the date
first set forth above. 
  

					
	CORPORATION:
	
	GlycoMimetics, Inc., a Delaware corporation
		
	By:	 	/s/ Rachel K. King
		 	Name:	 	Rachel K. King
		 	Its:	 	CEO

 SECOND AMENDMENT TO THE 

GLYCOMIMETICS, INC. 2003 STOCK INCENTIVE PLAN 
 THIS SECOND AMENDMENT (the “Second Amendment”) to the 2003 Stock Incentive Plan, as amended (the “Plan”), of GlycoMimetics, Inc., a Delaware corporation (the
“Corporation”), is hereby adopted effective as of October 20, 2009, as set forth below: 

WHEREAS, the Board of Directors of the Corporation (the “Board”) desires to modify and amend the Plan in
accordance with the terms and conditions of this Second Amendment; 
 WHEREAS, Section 16.2 of the Plan
provides that the Plan generally may be amended by the Board and Section 422 of the Internal Revenue Code of 1986, as amended, and the regulations thereunder require the approval of such increase in shares available under the Plan by the
holders of a majority of the outstanding voting stock of the Corporation; 
 WHEREAS, the Board has determined that it is
in the best interests of the Corporation to increase the number of shares of the Corporation’s common stock, par value $0.01 (the “Common Stock”), authorized for issuance under the Plan to 4,829,003 shares; and 

WHEREAS, the Board approved such increase in the number of shares of Common Stock available for issuance under the Plan by
unanimous written consent dated October 20, 2009, and the holders of a majority of the outstanding capital stock of the Corporation and the holders of a majority of the outstanding voting stock of the Corporation approved such increase by
written consent on October 20, 2009. 
 NOW, THEREFORE, in consideration of the foregoing: 

1. All capitalized terms used herein shall have the meanings assigned to them in the Plan unless expressly defined otherwise in this
Second Amendment. 
 2. Except as otherwise specifically provided herein, all terms and conditions of the Plan shall apply to
the interpretation and enforcement of this Second Amendment as if explicitly set forth herein. 
 3. The first sentence of
Section 4 of the Plan is hereby amended by replacing the figure “4,714,528” with “4,829,003.” 
 4.
Except as expressly amended hereby, the Plan shall remain in full force and effect. Any references to the Plan in any documents shall refer to the Plan as amended hereby. 
 [SIGNATURE PAGE TO FOLLOW] 

 IN WITNESS WHEREOF, the Corporation has executed this Second Amendment as of the date
first set forth above. 
  

					
	CORPORATION:
	
	GlycoMimetics, Inc., a Delaware corporation
		
	By:	 	/s/ Rachel K. King
		 	Name:	 	Rachel K. King
		 	Its:	 	President

 SECOND AMENDMENT TO THE 2003 STOCK INCENTIVE PLAN 

 THIRD AMENDMENT TO THE 

GLYCOMIMETICS, INC. 2003 STOCK INCENTIVE PLAN 
 THIS THIRD AMENDMENT (the “Third Amendment”) to the 2003 Stock Incentive Plan, as amended (the “Plan”), of GlycoMimetics, Inc., a Delaware corporation (the
“Corporation”), is hereby adopted effective as of March 28, 2012, as set forth below: 
 WHEREAS,
the Board of Directors of the Corporation (the “Board”) desires to modify and amend the Plan in accordance with the terms and conditions of this Third Amendment; 

WHEREAS, Section 16.2 of the Plan provides that the Plan generally may be amended by the Board and Section 422 of the
Internal Revenue Code of 1986, as amended, and the regulations thereunder require the approval of such increase in shares available under the Plan by the holders of a majority of the outstanding voting stock of the Corporation; 

WHEREAS, the Board has determined that it is in the best interests of the Corporation to increase the number of shares of the
Corporation’s common stock, par value $0.01 (the “Common Stock”), authorized for issuance under the Plan to 5,029,003 shares; and 
 WHEREAS, the Board approved such increase in the number of shares of Common Stock available for issuance under the Plan by unanimous written consent dated March 28, 2012, and the holders of a
majority of the outstanding capital stock of the Corporation and the holders of a majority of the outstanding voting stock of the Corporation approved such increase by written consent on March 28, 2012. 

NOW, THEREFORE, in consideration of the foregoing: 
 1. All capitalized terms used herein shall have the meanings assigned to them in the Plan unless expressly defined otherwise in this Third Amendment. 

2. Except as otherwise specifically provided herein, all terms and conditions of the Plan shall apply to the interpretation and
enforcement of this Third Amendment as if explicitly set forth herein. 
 3. The first sentence of Section 4 of the Plan is
hereby amended by replacing the figure “4,829,003” with “5,029,003.” 
 4. Except as expressly amended
hereby, the Plan shall remain in full force and effect. Any references to the Plan in any documents shall refer to the Plan as amended hereby. 
 [SIGNATURE PAGE TO FOLLOW] 

 IN WITNESS WHEREOF, the Corporation has executed this Third Amendment as of the date
first set forth above. 
  

					
	CORPORATION:
	
	GlycoMimetics, Inc., a Delaware corporation
		
	By:	 	 /s/ Rachel K. King

		 	Name:	 	Rachel K. King
		 	Its:	 	Chief Executive Officer

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