X0306 4 2019-08-06 1 0001427570 OBALON THERAPEUTICS INC OBLN 0001443898 INTERWEST PARTNERS X LP 2710 SAND HILL ROAD, SUITE 200 MENLO PARK CA 94025 0 0 1 0 0001460207 InterWest Management Partners X, LLC 2710 SAND HILL ROAD, SUITE 200 MENLO PARK CA 94025 0 0 1 0 0001293171 Kliman Gilbert H 2710 SAND HILL ROAD, SUITE 200 MENLO PARK CA 94025 0 0 1 0 0001207833 ORONSKY ARNOLD L 2710 SAND HILL ROAD, SUITE 200 MENLO PARK CA 94025 0 0 1 0 0001553019 Desai Keval 2710 SAND HILL ROAD, SUITE 200 MENLO PARK CA 94025 0 0 1 0 0001276600 NASR KHALED 2710 SAND HILL ROAD, SUITE 200 MENLO PARK CA 94025 0 0 1 0 Common Stock 2019-08-06 4 P 0 25000 4.00 A 380224 D Warrants (Right to buy) 4.40 2019-08-06 4 P 0 18750 0.00 A 2019-08-06 2024-08-05 COMMON 18750 18750 D The reporting persons purchased these shares directly from the underwriter in the Issuer's registered offering of Common Stock with 75% warrant coverage at a price of $4.00 per unit. There was no additional consideration paid for the warrants. These securities are held of record by InterWest Partners X, L.P. ("IW10"). InterWest Management Partners X, LLC ("IMP10") is the general partner of IW10 and has sole voting and investment control over the shares owned by IW10. Gilbert H. Kliman, and Arnold L. Oronsky are Managing Directors of IMP10 and, Keval Desai and Khaled A. Nasr, and are Venture Members of IMP10. Douglas Fisher, a Member of IMP10 is also a Director of the Issuer, and when required, files a separate Form 4 in his own name. All Reporting Persons disclaim beneficial ownership of shares of Obalon Therapeutics, Inc. stock held by IW10, except to the extent of their respective pecuniary interest therein. The filing of this statement shall not be deemed an admission that, for purposes of Section 16 of the Securities Exchange Act of 1944, or otherwise, any of the Reporting Persons are the beneficial owner of all of the equity securities covered by this statement. /s/ Karen A. Wilson, Attorney-in-Fact for InterWest Partners X, LP 2019-08-08 /s/ Karen A. Wilson, Attorney-in-Fact for InterWest Management Partners X, L.L.C. 2019-08-08 /s/ Karen A. Wilson, Attorney-in-Fact for Gilbert Kliman 2019-08-08 /s/ Karen A. Wilson, Attorney-in-Fact for Arnold L. Oronsky 2019-08-08 /s/ Karen A. Wilson, Attorney-in-Fact for Keval Desai 2019-08-08 /s/ Karen A. Wilson, Attorney-in-Fact for Khaled A. Nasr 2019-08-08