SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* INTERWEST PARTNERS X LP (Last) (First) (Middle) 2710 SAND HILL ROAD, SUITE 200 (Street) MENLO PARK CA 94025 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol OBALON THERAPEUTICS INC [ OBLN ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 08/23/2018
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	08/23/2018		P		1,098,901(1)	A	$1.82	3,552,239(2)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

1. Name and Address of Reporting Person* INTERWEST PARTNERS X LP (Last) (First) (Middle) 2710 SAND HILL ROAD, SUITE 200 (Street) MENLO PARK CA 94025 (City) (State) (Zip)

1. Name and Address of Reporting Person* InterWest Management Partners X, LLC (Last) (First) (Middle) 2710 SAND HILL ROAD, SUITE 200 (Street) MENLO PARK CA 94025 (City) (State) (Zip)

1. Name and Address of Reporting Person* Kliman Gilbert H (Last) (First) (Middle) 2710 SAND HILL ROAD, SUITE 200 (Street) MENLO PARK CA 94025 (City) (State) (Zip)

1. Name and Address of Reporting Person* ORONSKY ARNOLD L (Last) (First) (Middle) 2710 SAND HILL ROAD, SUITE 200 (Street) MENLO PARK CA 94025 (City) (State) (Zip)

1. Name and Address of Reporting Person* Desai Keval (Last) (First) (Middle) 2710 SAND HILL ROAD, SUITE 200 (Street) MENLO PARK CA 94025 (City) (State) (Zip)

1. Name and Address of Reporting Person* NASR KHALED (Last) (First) (Middle) 2710 SAND HILL ROAD, SUITE 200 (Street) MENLO PARK CA 94025 (City) (State) (Zip)

Explanation of Responses:

1. The reporting person purchased these shares directly from the issuer in a private placement.

2. 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.

Remarks:

	/s/ Karen A. Wilson, Attorney-in-Fact for InterWest Partners X, LP	08/27/2018
	/s/ Karen A. Wilson, Attorney-in-Fact for InterWest Management Partners X, L.L.C.	08/27/2018
	/s/ Karen A. Wilson, Attorney-in-Fact for Gilbert Kliman	08/27/2018
	/s/ Karen A. Wilson, Attorney-in-Fact for Arnold L. Oronsky	08/27/2018
	/s/ Karen A. Wilson, Attorney-in-Fact for Keval Desai	08/27/2018
	/s/ Karen A. Wilson, Attorney-in-Fact for Khaled A. Nasr	08/27/2018
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
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