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* MONTREUX EQUITY PARTNERS IV LP (Last) (First) (Middle) ONE FERRY BUILDING, SUITE 255 (Street) SAN FRANCISCO CA 94111 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 07/15/2014	3. Issuer Name and Ticker or Trading Symbol EPIRUS Biopharmaceuticals, Inc. [ EPRS ]
		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)
Common Stock	19,524,459	D(1)
Common Stock	2,714,764	D(2)

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

1. Name and Address of Reporting Person* MONTREUX EQUITY PARTNERS IV LP (Last) (First) (Middle) ONE FERRY BUILDING, SUITE 255 (Street) SAN FRANCISCO CA 94111 (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* Montreux Equity Partners V, L.P. (Last) (First) (Middle) ONE FERRY BUILDING, SUITE 255 (Street) SAN FRANCISCO CA 94111 (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. John J. Savarese, M.D., Howard D. Palefsky, and Daniel K. Turner III are the managers of Montreux Equity Management IV, LLC, which is the sole general partner of Montreux Equity Partners IV, L.P., which directly holds 19,524,459 shares of Common Stock ("Common Stock") of EPIRUS Biopharmaceuticals, Inc. (the "Issuer"). By reason of these relationships, Montreux Equity Management IV, LLC, Dr. Savarese, Mr. Palefsky and Mr. Turner may be deemed to beneficially own the securities reported herein. Each of Montreux Equity Management IV, LLC, Dr. Savarese, Mr. Palefsky and Mr. Turner disclaims beneficial ownership of such securities, except to the extent of their respective pecuniary interests therein.

2. Daniel K. Turner III is the sole manager of Montreux Equity Management V, LLC, which is the sole general partner of Montreux Equity Partners V, L.P., which directly holds 2,714,764 shares of Common Stock of the Issuer. By reason of these relationships, Montreux Equity Management V, LLC and Mr. Turner may be deemed to beneficially own the securities reported herein. Each of Montreux Equity Management V, LLC and Mr. Turner disclaims beneficial ownership of such securities, except to the extent of their respective pecuniary interests therein.

	/s/ Daniel K. Turner III, Manager, for Montreux Equity Management IV, LLC as general partner of Montreux Equity Partners IV, L.P.	07/25/2014
	/s/ Daniel K. Turner III, Manager, for Montreux Equity Management V, LLC as general partner of Montreux Equity Partners V, L.P.	07/25/2014
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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