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 Management Partners IX, LLC (Last) (First) (Middle) C/O INTERWEST PARTNERS 2710 SAND HILL ROAD, SUITE 200 (Street) MENLO PARK CA 94025 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol Carbylan Therapeutics, Inc. [ CBYL ]	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) 04/14/2015
	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	04/14/2015		C		831,531	A	(1)	831,531	I	See Footnote(2)
Common Stock	04/14/2015		C		2,145,351	A	(1)	2,976,882	I	See Footnote(2)
Common Stock	04/14/2015		C		466,357	A	(3)	3,443,239	I	See Footnote(2)
Common Stock	04/14/2015		C		365,957	A	(4)	3,809,196	I	See Footnote(2)
Common Stock	04/14/2015		P		810,000	A	$5	4,619,196	I	See Footnote(2)

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
Series A Convertible Preferred Stock	(1)	04/14/2015		C			831,531	(1)	(1)	Common Stock	831,531	(1)	0	I	See Footnote(2)
Series B Convertible Preferred Stock	(1)	04/14/2015		C			2,145,351	(1)	(1)	Common Stock	2,145,351	(1)	0	I	See Footnote(2)
Convertible Promissory Note	(3)	04/14/2015		C			466,357	(3)	(3)	Common Stock	466,357	(3)	0	I	See Footnote(2)
Convertible Promissory Note	(4)	04/14/2015		C			365,957	(4)	(4)	Common Stock	365,957	(4)	0	I	See Footnote(2)

1. Name and Address of Reporting Person* InterWest Management Partners IX, LLC (Last) (First) (Middle) C/O INTERWEST PARTNERS 2710 SAND HILL ROAD, SUITE 200 (Street) MENLO PARK CA 94025 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* InterWest Partners IX, LP (Last) (First) (Middle) C/O INTERWEST PARTNERS 2710 SAND HILL ROAD, SUITE 200 (Street) MENLO PARK CA 94025 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* GIANOS PHILIP T (Last) (First) (Middle) C/O INTERWEST PARTNERS 2710 SAND HILL ROAD, SUITE 200 (Street) MENLO PARK CA 94025 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* ORONSKY ARNOLD L (Last) (First) (Middle) C/O INTERWEST PARTNERS 2710 SAND HILL ROAD, SUITE 200 (Street) MENLO PARK CA 94025 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Kliman Gilbert H (Last) (First) (Middle) C/O INTERWEST PARTNERS 2710 SAND HILL ROAD, SUITE 200 (Street) MENLO PARK CA 94025 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Holmes W Stephen (Last) (First) (Middle) C/O INTERWEST PARTNERS 2710 SAND HILL ROAD, SUITE 200 (Street) MENLO PARK CA 94025 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Kjellson Nina S (Last) (First) (Middle) C/O INTERWEST PARTNERS 2710 SAND HILL ROAD, SUITE 200 (Street) MENLO PARK CA 94025 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Pepper Douglas A (Last) (First) (Middle) C/O INTERWEST PARTNERS 2710 SAND HILL ROAD, SUITE 200 (Street) MENLO PARK CA 94025 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* CLEVELAND BRUCE A (Last) (First) (Middle) C/O INTERWEST PARTNERS 2710 SAND HILL ROAD, SUITE 200 (Street) MENLO PARK CA 94025 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* NASR KHALED (Last) (First) (Middle) C/O INTERWEST PARTNERS 2710 SAND HILL ROAD, SUITE 200 (Street) MENLO PARK CA 94025 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

1. Upon the closing of the Issuer's initial public offering, each share of Series A Convertible Preferred Stock and Series B Convertible Preferred Stock automatically converted into Common Stock on a one for one basis without payment or further consideration, and has no expiration date.

2. The shares are held by InterWest Partners IX, L.P. ("IW9"). InterWest Management Partners IX, LLC ("IMP9"), the general partner of IW9, has sole voting and investment control over the shares held by IW9. Philip T. Gianos, W. Stephen Holmes, Gilbert H. Kliman and Arnold Oronsky are the managing directors of IMP9. Bruce A. Cleveland, Nina Kjellson, Khaled A. Nasr and Douglas A. Pepper are the venture members of IMP9. Each of the managing directors and venture members share voting and investment control with respect to the share held by IW9 and disclaims beneficial ownership of the shares reported herein, except to the extent of his respective pecuniary interest therein.

3. The Convertible Promissory Note is convertible into the number of shares of the Issuer's Common Stock equal to the quotient obtained by dividing the entire principal amount and 184 days of accrued interest on the Convertible Promissory Note by 80% of the initial public offering price of $5.00 per share of the Issuer's Common Stock, automatically upon the closing of the Issuer's initial public offering, and has no expiration date.

4. The Convertible Promissory Note is convertible into the number of shares of the Issuer's Common Stock equal to the quotient obtained by dividing the entire principal amount and 41 days of accrued interest on the Convertible Promissory Note by 80% of the initial public offering price of $5.00 per share of the Issuer's Common Stock, automatically upon the closing of the Issuer's initial public offering, and has no expiration date.

Remarks:

Exhibit List Exhibit 99 - Form 4 Joint Filer Information

	By: /s/ W. Stephen Holmes, as managing director of InterWest Management Partners IX, LLC	04/14/2015
	By: /s/ W. Stephen Holmes, as managing director of InterWest Management Partners IX, LLC, the General Partner of InterWest Partners IX, L.P.	04/14/2015
	By: /s/ Karen A. Wilson, Attorney-in-Fact for Philip T. Gianos	04/14/2015
	By: /s/ Karen A. Wilson, Attorney-in-Fact for Arnold L. Oronsky	04/14/2015
	By: /s/ Karen A. Wilson, Attorney-in-Fact for Gilbert H. Kliman	04/14/2015
	By: /s/ Karen A. Wilson, Attorney-in-Fact for W. Stephen Holmes	04/14/2015
	By: /s/ Karen A. Wilson, Attorney-in-Fact for Nina Kjellson	04/14/2015
	By: /s/ Karen A. Wilson, Attorney-in-Fact for Douglas Pepper	04/14/2015
	By: /s/ Karen A. Wilson, Attorney-in-Fact for Bruce Cleveland	04/14/2015
	By: /s/ Karen A. Wilson, Attorney-in-Fact for Khaled Nasr	04/14/2015
	** Signature of Reporting Person	Date
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