GlycoMimetics Inc. Watch

from S-3 16 pages Glycomimetics, Inc. and [ ], as Warrant Agent Form of Debt Securities Warrant Agreement Dated as of [ ] Glycomimetics, Inc. Form of Debt Securities Warrant Agreement

from S-3 16 pages Glycomimetics, Inc. and [ ], as Warrant Agent Form of Preferred Stock Warrant Agreement Dated as of Glycomimetics, Inc. Form of Preferred Stock Warrant Agreement

from S-3 17 pages Glycomimetics, Inc. and , as Warrant Agent Form of Common Stock Warrant Agreement Dated as of Glycomimetics, Inc. Form of Common Stock Warrant Agreement

from S-3 41 pages Glycomimetics, Inc., Issuer and [Trustee], Trustee Indenture Dated as of [•], 20__ Debt Securities

from 10-K 3 pages Description of Certain of Registrant’s Securities

from S-3 17 pages Glycomimetics, Inc. and , as Warrant Agent Form of Debt Securities Warrant Agreement Dated as of Glycomimetics, Inc. Form of Debt Securities Warrant Agreement

from S-3 18 pages Glycomimetics, Inc. and , as Warrant Agent Form of Preferred Stock Warrant Agreement Dated as of Glycomimetics, Inc. Form of Preferred Stock Warrant Agreement

from S-3 18 pages Glycomimetics, Inc. and , as Warrant Agent Form of Common Stock Warrant Agreement Dated as of Glycomimetics, Inc. Form of Common Stock Warrant Agreement

from S-3 44 pages Glycomimetics, Inc., Issuer and [Trustee], Trustee Indenture Dated as of [·], 20 Debt Securities

from S-3 19 pages Glycomimetics, Inc. and , as Warrant Agent Form of Debt Securities Warrant Agreement Dated as of Glycomimetics, Inc. Form of Debt Securities Warrant Agreement

from S-3 22 pages Glycomimetics, Inc. and , as Warrant Agent Form of Preferred Stock Warrant Agreement Dated as of Glycomimetics, Inc. Form of Preferred Stock Warrant Agreement

from S-3 21 pages Glycomimetics, Inc. and , as Warrant Agent Form of Common Stock Warrant Agreement Dated as of Glycomimetics, Inc. Form of Common Stock Warrant Agreement

from S-3 48 pages Glycomimetics, Inc., Issuer and [Trustee], Trustee Indenture Dated as of [·], 20 Debt Securities

from S-3 21 pages Glycomimetics, Inc. and , as Warrant Agent Form of Debt Securities Warrant Agreement Dated as of Glycomimetics, Inc. Form of Debt Securities Warrant Agreement Article 1 Issuance of Warrants and Execution and Delivery of Warrant Certificates

from S-3 24 pages Glycomimetics, Inc. and , as Warrant Agent Form of Preferred Stock Warrant Agreement Dated as of Glycomimetics, Inc. Form of Preferred Stock Warrant Agreement Article 1 Issuance of Warrants and Execution and Delivery of Warrant Certificates

from S-3 23 pages Glycomimetics, Inc. and , as Warrant Agent Form of Common Stock Warrant Agreement Dated as of Glycomimetics, Inc. Form of Common Stock Warrant Agreement Article 1 Issuance of Warrants and Execution and Delivery of Warrant Certificates

from S-3 57 pages Glycomimetics, Inc., Issuer and [Trustee], Trustee Indenture Dated as of Debt Securities

from S-1/A 1 page Gm See Reverse for Certain Definitions Common Stock Common Stock Glycomimetics, Inc. Glycomimetics, Inc. Cusip 38000q 10 2 Incorporated Under the Laws of the State of Delaware This Certifies That Is the Record Holder of Fully Paid and Non-Assessable Shares of Common Stock, $0.001 Par Value Per Share, of Glycomimetics, Inc. (The “Corporation”), Transferable on the Books of the Corporation in Person or by Duly Authorized Attorney Upon Surrender of the Certificate Properly Endorsed. This Certificate and the Shares Represented Hereby Are Issued and Shall Be Held Subject to All of the Provisions of the Certificate of Incorporation, as Amended, and the Bylaws, as Amended, of the Corporation. This Certificate Is Not Valid Unless Countersigned by the Transfer Agent and Registered by the Registrar. Witness the Facsimile Seal of the Corporation and Facsimile Signatures of Its Duly Authorized Officers. Dated: Countersigned and Registered: American Stock Transfer & Trust Company, LLC (Brooklyn, Ny) Transfer Agent and Registrar By: Authorized Signature President and Chief Executive Officer Secretary Glycomimetics, Inc. Corporate Seal 2003 Delaware * © Security-Columbian United States Banknote Company