CRESCENT BIOPHARMA, INC. — Director's Dealing 2017

May 11, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: GLYCOMIMETICS INC (GLYC)
CIK: 0001253689
Period of Report: 2017-05-10

Reporting Person: Magnani John L. (Director, SVP of Research, CSO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-05-10	Common Stock	M	8928	$1.12	Acquired	99302	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-05-10	Employee Stock Option (right to buy)	$1.12	M	8928	Disposed	2021-01-04	Common Stock (8928)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	4845	Indirect

Footnotes

F1: These shares are held by GlycoTech Corporation, of which the reporting person is the sole stockholder.

F2: One-fourth of the shares underlying this option vested on January 4, 2012, with the remainder vesting in 36 equal monthly installments thereafter.