SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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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. Date of Event Requiring Statement (Month/Day/Year) 06/24/2015	3. Issuer Name and Ticker or Trading Symbol CATABASIS PHARMACEUTICALS INC [ CATB ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)	5. 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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Series A Preferred Stock	(1)	(1)	Common Stock	1,651,223	(1)	I	See Footnotes(3)(5)
Series A Preferred Stock	(1)	(1)	Common Stock	34,893	(1)	I	See Footnotes(4)(5)
Series B Preferred Stock	(2)	(2)	Common Stock	764,309	(2)	I	See Footnotes(3)(5)
Series B Preferred Stock	(2)	(2)	Common Stock	16,152	(2)	I	See Footnotes(4)(5)

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) 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* 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) 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* SV LIFE SCIENCES FUND V LP (Last) (First) (Middle) ONE BOSTON PLACE 201 WASHINGTON STREET SUITE 3900 (Street) BOSTON MA 02108 (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* 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) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

1. The Series A Preferred Stock is convertible into Common Stock on a 1-for-12.85 basis into the number of shares shown in column 3 at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date.

2. The Series B Preferred Stock is convertible into Common Stock on a 1-for-12.85 basis into the number of shares shown in column 3 at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date.

3. 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.

4. These shares are owned directly by SV Life Sciences Fund V Strategic Partners, L.P. ("SVLS V SPP"). 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.

5. 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.

Remarks:

Exhibit Index: 24.1 Power of Attorney

	By: /s/ Denise Marks, Member of SVLSF V, LLC	06/24/2015
	By: /s/ Denise Marks, Member of SVLSF V, LLC, general partner of SV Life Sciences Fund V (GP), L.P.	06/24/2015
	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.	06/24/2015
	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.	06/24/2015
	** Signature of Reporting Person	Date
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