Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock^{F1,F2,F3,F4,F5,F7}	Jul 1, 2015	C	1,860,236	—	A	1,860,236	I	See footnote
Common Stock^{F1,F2,F3,F4,F5,F6,F8}	Jul 1, 2015	C	1,129,524	—	A	1,129,524	I	See footnote
Common Stock^{F1,F2,F3,F4,F5,F6,F9}	Jul 1, 2015	C	3,394	—	A	3,394	I	See footnote
Common Stock^F6,F10	Jul 1, 2015	C	101,733	—	A	101,733	I	See footnote
Common Stock^F11	Jul 1, 2015	P	375,000	$8.00	A	375,000	I	See footnote

Table II — derivative securities

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	D/I
Series A Convertible Preferred Stock^F7,F1	—	Jul 1, 2015	C	938,323	D	—	—	Common Stock	938,323	I
Series A Convertible Preferred Stock^F8,F1	—	Jul 1, 2015	C	5,894	D	—	—	Common Stock	5,894	I
Series A Convertible Preferred Stock^F9,F1	—	Jul 1, 2015	C	17	D	—	—	Common Stock	17	I
Series B Convertible Preferred Stock^F7,F2	—	Jul 1, 2015	C	370,325	D	—	—	Common Stock	370,325	I
Series B Convertible Preferred Stock^F8,F2	—	Jul 1, 2015	C	72,589	D	—	—	Common Stock	72,589	I
Series B Convertible Preferred Stock^F9,F2	—	Jul 1, 2015	C	217	D	—	—	Common Stock	217	I
Series C Convertible Preferred Stock^F7,F3	—	Jul 1, 2015	C	209,761	D	—	—	Common Stock	209,761	I
Series C Convertible Preferred Stock^F8,F3	—	Jul 1, 2015	C	130,990	D	—	—	Common Stock	130,990	I
Series C Convertible Preferred Stock^F9,F3	—	Jul 1, 2015	C	393	D	—	—	Common Stock	393	I
Series D Convertible Preferred Stock^F7,F4	—	Jul 1, 2015	C	295,919	D	—	—	Common Stock	295,919	I
Series D Convertible Preferred Stock^F8,F4	—	Jul 1, 2015	C	603,313	D	—	—	Common Stock	603,313	I
Series D Convertible Preferred Stock^F9,F4	—	Jul 1, 2015	C	1,815	D	—	—	Common Stock	1,815	I
Series D-1 Convertible Preferred Stock^F7,F5	—	Jul 1, 2015	C	45,908	D	—	—	Common Stock	45,908	I
Series D-1 Convertible Preferred Stock^F8,F5	—	Jul 1, 2015	C	93,596	D	—	—	Common Stock	93,596	I
Series D-1 Convertible Preferred Stock^F9,F5	—	Jul 1, 2015	C	281	D	—	—	Common Stock	281	I
Series F Convertible Preferred Stock^F8,F6	—	Jul 1, 2015	C	223,142	D	—	—	Common Stock	223,142	I
Series F Convertible Preferred Stock^F9,F6	—	Jul 1, 2015	C	671	D	—	—	Common Stock	671	I
Series F Convertible Preferred Stock^F10,F6	—	Jul 1, 2015	C	101,733	D	—	—	Common Stock	101,733	I

Explanation of responses

F1The Series A Convertible Preferred Stock automatically converted into Common Stock on a 1:1 basis immediately prior to the completion of the Issuer's initial public offering of common stock and had no expiration date.
F10The reported securities are held of record by Rembrandt Venture Partners Opportunities Fund I, L.P. (RVP Opportunities I). Messrs. Casilli, Schrier and Irwin, as the managing members of Rembrandt Venture Partners Opportunities GP I, LLC, the general partner of RVP Opportunities I, share voting and dispositive power with respect to the shares held by RVP Opportunities I. Messrs. Casilli, Schrier and Irwin disclaim beneficial ownership of the securities reported herein, except to the extent of any individual pecuniary interest therein.
F11The reported securities are held of record by RVP Opportunities Fund II, L.P. (RVP Opportunities II). Messrs. Casilli, Schrier and Irwin, as the managing members of RVP Opportunities GP II, LLC, the general partner of RVP Opportunities II, share voting and dispositive power with respect to the shares held by RVP Opportunities II. Messrs. Casilli, Schrier and Irwin disclaim beneficial ownership of the securities reported herein, except to the extent of any individual pecuniary interest therein.
F2The Series B Convertible Preferred Stock automatically converted into Common Stock on a 1:1 basis immediately prior to the completion of the Issuer's initial public offering of common stock and had no expiration date.
F3The Series C Convertible Preferred Stock automatically converted into Common Stock on a 1:1 basis immediately prior to the completion of the Issuer's initial public offering of common stock and had no expiration date.
F4The Series D Convertible Preferred Stock automatically converted into Common Stock on a 1:1 basis immediately prior to the completion of the Issuer's initial public offering of common stock and had no expiration date.
F5The Series D-1 Convertible Preferred Stock automatically converted into Common Stock on a 1:1 basis immediately prior to the completion of the Issuer's initial public offering of common stock and had no expiration date.
F6The Series F Convertible Preferred Stock automatically converted into Common Stock on a 1:1 basis immediately prior to the completion of the Issuer's initial public offering of common stock and had no expiration date.
F7The reported securities are held of record by Rembrandt Venture Partners II, L.P. (RVP II). Gerald S. Casilli, a director of the Issuer, and Douglas Schrier, as the managing members of Rembrandt Venture Partners II LLC, the general partner of RVP II, share voting and dispositive power with respect to the shares held by RVP II. Messrs. Casilli and Schrier disclaim beneficial ownership of the securities reported herein, except to the extent of any individual pecuniary interest therein.
F8The reported securities are held of record by Rembrandt Venture Partners Fund Two, L.P. (RVPF 2). Messrs. Casilli and Schrier and Scott Irwin, as the managing members of Rembrandt Venture Partners Fund Two, LLC, the general partner of RVPF 2, share voting and dispositive power with respect to the shares held by RVPF 2. Messrs. Casilli, Schrier and Irwin disclaim beneficial ownership of the securities reported herein, except to the extent of any individual pecuniary interest therein.
F9The reported securities are held of record by Rembrandt Venture Partners Fund Two-A, L.P. (RVPF 2-A). Messrs. Casilli, Schrier and Irwin, as the managing members of Rembrandt Venture Partners Fund Two, LLC, the general partner of RVPF 2-A, share voting and dispositive power with respect to the shares held by RVPF 2-A. Messrs. Casilli, Schrier and Irwin disclaim beneficial ownership of the securities reported herein, except to the extent of any individual pecuniary interest therein.