SYNLOGIC, INC. — Director's Dealing 2015

Oct 1, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Mirna Therapeutics, Inc. (MIRN)
CIK: 0001527599
Period of Report: 2015-09-30

Reporting Person: Fuhrman Alan (Chief Financial Officer)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2015-09-30	Stock Option (Right to Buy)	$7	A	167180	Acquired	2025-09-30	Common Stock (167180)	Direct

Footnotes

F1: The option vests with respect to 25% of the shares subject thereto on September 8, 2016, with the remaining shares vesting with respect to 1/48 of the total shares subject thereto on each monthly anniversary thereafter, subject to the Reporting Person continuing to provide services to the Issuer through each such vesting date.