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* SVLSF V, LLC (Last) (First) (Middle) ONE BOSTON PLACE 201 WASHINGTON STREET SUITE 3900 (Street) BOSTON MA 02108 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol CATABASIS PHARMACEUTICALS INC [ CATB ]	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) 06/30/2015
	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	06/30/2015		C		1,651,223	A	(1)	1,651,223	I	See Footnotes(2)(4)
Common Stock	06/30/2015		C		34,893	A	(1)	34,893	I	See Footnotes(3)(4)
Common Stock	06/30/2015		C		764,309	A	(1)	2,415,532	I	See Footnotes(2)(4)
Common Stock	06/30/2015		C		16,152	A	(1)	51,045	I	See Footnotes(3)(4)
Common Stock	06/30/2015		P		382,996	A	$12	2,798,528	I	See Footnotes(2)(4)
Common Stock	06/30/2015		P		8,094	A	$12	59,139	I	See Footnotes(3)(4)

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 Preferred Stock	(1)	06/30/2015		C			21,218,253	(1)	(1)	Common Stock	1,651,223	$0	0	I	See Footnotes(2)(4)
Series A Preferred Stock	(1)	06/30/2015		C			448,414	(1)	(1)	Common Stock	34,893	$0	0	I	See Footnotes(3)(4)
Series B Preferred Stock	(1)	06/30/2015		C			9,821,385	(1)	(1)	Common Stock	764,309	$0	0	I	See Footnotes(2)(4)
Series B Preferred Stock	(1)	06/30/2015		C			207,558	(1)	(1)	Common Stock	16,152	$0	0	I	See Footnotes(3)(4)

1. Name and Address of Reporting Person* SVLSF V, LLC (Last) (First) (Middle) ONE BOSTON PLACE 201 WASHINGTON STREET SUITE 3900 (Street) BOSTON MA 02108 (City) (State) (Zip)

1. Name and Address of Reporting Person* SV Life Sciences Fund V (GP), LP (Last) (First) (Middle) ONE BOSTON PLACE 201 WASHINGTON STREET SUITE 3900 (Street) BOSTON MA 02108 (City) (State) (Zip)

1. Name and Address of Reporting Person* SV LIFE SCIENCES FUND V LP (Last) (First) (Middle) ONE BOSTON PLACE 201 WASHINGTON STREET SUITE 3900 (Street) BOSTON MA 02108 (City) (State) (Zip)

1. Name and Address of Reporting Person* SV Life Sciences Fund V Strategic Partners, L.P. (Last) (First) (Middle) ONE BOSTON PLACE 201 WASHINGTON STREET SUITE 3900 (Street) BOSTON MA 02108 (City) (State) (Zip)

Explanation of Responses:

1. The Series A and Series B Preferred Stock converted into Common Stock on a 1-for-12.85 basis upon the closing of the Issuer's initial public offering without payment of consideration. The Series A and B Preferred Stock were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering. The shares had no expiration date.

2. These shares are owned directly by SV Life Sciences Fund V, L.P. ("SVLS V LP"). SV Life Sciences Fund V (GP), LP ("SVLS V GP") is the general partner of SVLS V LP. The general partner of SVLS V GP is SVLSF V, LLC. The members of the investment committee of SVLSF V, LLC are Kate Bingham, James Garvey, Eugene D. Hill, III, David Milne and Michael Ross. SVLS V GP, SVLSF V, LLC and each of the individuals comprising the SVLSF V, LLC investment committee may be deemed to share voting, dispositive and investment power over the shares held of record by SVLS V LP and SVLS V SPP. Each of SVLS V GP, SVLSF V, LLC and the individual members of the SVLSF V, LLC investment committee disclaim beneficial ownership of the shares owned directly by SVLS V LP except to the extent of any pecuniary interest therein.

3. These shares are owned directly by SV Life Sciences Fund V Strategic Partners, L.P. ("SVLS V SPP"). SV Life Sciences Fund V (GP), LP ("SVLS V GP") is the general partner of SVLS V SPP. The general partner of SVLS V GP is SVLSF V, LLC. The members of the investment committee of SVLSF V, LLC are Kate Bingham, James Garvey, Eugene D. Hill, III, David Milne and Michael Ross. SVLS V GP, SVLSF V, LLC and each of the individuals comprising the SVLSF V, LLC investment committee may be deemed to share voting, dispositive and investment power over the shares held of record by SVLS V LP and SVLS V SPP. Each of SVLS V GP, SVLSF V, LLC and the individual members of the SVLSF V, LLC investment committee disclaim beneficial ownership of the shares owned directly by SVLS V SPP except to the extent of any pecuniary interest therein.

4. SVLS V LP and SVLS V SPP (each a "Fund," or collectively the "Funds") may be deemed to beneficially own the shares held by each other Fund because of certain contractual relationships among the Funds and their affiliates. The Funds disclaim beneficial ownership of shares held by any other Fund except to the extent of any pecuniary interest therein.

	By:/s/ Denise Marks, Member of SVLSF V, LLC	06/30/2015
	By:/s/ Denise Marks, Member of SVLSF V, LLC, general partner of SV Life Sciences Fund V (GP), L.P.	06/30/2015
	By:/s/ Denise Marks, Member of SVLSF V, LLC, general partner of SV Life Sciences Fund V (GP), L.P., general partner of SV Life Sciences Fund V, L.P.	06/30/2015
	By:/s/ Denise Marks, Member of SVLSF V, LLC, general partner of SV Life Sciences Fund V (GP), L.P., general partner of SV Life Sciences Fund V Strategic Partners, L.P.	06/30/2015
	** Signature of Reporting Person	Date
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