Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	D/I
Series A Preferred Stock^F1,F2,F3	—	Oct 12, 2016	C	649,835	D	—	—	Common Stock	862,879	D
Series B Preferred Stock^F1,F2,F3	—	Oct 12, 2016	C	1,206,836	D	—	—	Common Stock	1,206,836	D
Series C Preferred Stock^F1,F2,F3	—	Oct 12, 2016	C	836,722	D	—	—	Common Stock	836,722	D
Series D Preferred Stock^F1,F2,F3	—	Oct 12, 2016	C	597,207	D	—	—	Common Stock	597,207	D
Series E Preferred Stock^F1,F2,F3	—	Oct 12, 2016	C	482,326	D	—	—	Common Stock	482,326	D

Explanation of responses

F1The securities reported as directly beneficially owned by the designated Reporting Person may be deemed to be indirectly beneficially owned by each of the Reporting Owners listed below, each of whom is a managing member of One Palmer Square Associates VII, LLC, the sole general partner of the designated Reporting Person. Pursuant to Instruction 4(b)(iv) of Form 4, each such individual has elected to report as indirectly beneficially owned the entire number of securities owned by the designated Reporting Person, however each of them disclaims beneficial ownership of any securities, and any proceeds thereof, that exceed his or her pecuniary interest therein and/or that are not actually distributed to him or her.
F2As managing members of the sole general partner of DP VII Associates, L.P., each Reporting Owner listed below may also be deemed to indirectly beneficially own the securities of the Issuer held by DP VII Associates, L.P., as reported on a Form 4 for DP VII Associates, L.P. filed on the same date as this Form 4.
F3All outstanding shares of the Issuer's preferred stock automatically converted into Common Stock upon the closing of the Issuer's initial public offering for no additional consideration. The preferred stock had no expiration date.