SYNLOGIC, INC. — Director's Dealing 2016

Apr 27, 2016

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Mirna Therapeutics, Inc. (MIRN)
CIK: 0001527599
Period of Report: 2016-04-25

Reporting Person: O'Neill Vincent (Chief Medical Officer)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2016-04-25	Stock Option (Right to Buy)	$4.42	A	250000	Acquired	2026-04-25	Common Stock (250000)	Direct

Footnotes

F1: The option vests with respect to 25% of the shares subject thereto on the one year anniversary of the vesting commencement date with the remaining shares vesting with respect to 1/48 of the total shares subject thereto on each monthly anniversary thereafter, subject to Dr. O'Neill continuing to provide services to the Company through each such vesting date.