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* ACMP IV LLC (Last) (First) (Middle) C/O ACP IV, L.P. ONE EMBARCADERO CENTER, SUITE 3700 (Street) SAN FRANCISCO CA 94111 (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		727,590	A	(1)	727,590	I	See Footnote(2)
Common Stock	04/14/2015		C		1,981,124	A	(1)	2,708,714	I	See Footnote(2)
Common Stock	04/14/2015		C		424,346	A	(3)	3,133,060	I	See Footnote(2)
Common Stock	04/14/2015		C		332,990	A	(4)	3,466,050	I	See Footnote(2)
Common Stock	04/14/2015		P		877,500	A	$5	4,343,550	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			727,590	(1)	(1)	Common Stock	727,590	(1)	0	I	See Footnote(2)
Series B Convertible Preferred Stock	(1)	04/14/2015		C			1,981,124	(1)	(1)	Common Stock	1,981,124	(1)	0	I	See Footnote(2)
Convertible Promissory Note	(3)	04/14/2015		C			424,346	(3)	(3)	Common Stock	424,346	(3)	0	I	See Footnote(2)
Convertible Promissory Note	(4)	04/14/2015		C			332,990	(4)	(4)	Common Stock	332,990	(4)	0	I	See Footnote(2)

1. Name and Address of Reporting Person* ACMP IV LLC (Last) (First) (Middle) C/O ACP IV, L.P. ONE EMBARCADERO CENTER, SUITE 3700 (Street) SAN FRANCISCO CA 94111 (City) (State) (Zip)

1. Name and Address of Reporting Person* ACP IV, L.P. (Last) (First) (Middle) ONE EMBARCADERO CENTER, SUITE 3700 (Street) SAN FRANCISCO CA 94111 (City) (State) (Zip)

1. Name and Address of Reporting Person* JANNEY DANIEL (Last) (First) (Middle) ONE EMBARCADERO CENTER, SUITE 3700 (Street) SAN FRANCISCO CA 94111 (City) (State) (Zip)

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. These securities are held by ACP IV, L.P ("ACP IV"). Daniel S. Janney and Guy P. Nohra are directors of ACMP IV, LLC, the general partner of ACP IV and disclaim beneficial ownership of these securities except to the extent of any 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:

	By: /s/ Guy Nohra, Director	04/14/2015
	By: /s/ Daniel S. Janney	04/14/2015
	** Signature of Reporting Person	Date
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* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
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