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* Naxamber S.A. (Last) (First) (Middle) 40 BOULEVARD JOSEPH II, L-1840 (Street) N4 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 05/09/2013	3. Issuer Name and Ticker or Trading Symbol BioAmber Inc. [ BIOAU ]
		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	3,370,815	D(1)

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* Naxamber S.A. (Last) (First) (Middle) 40 BOULEVARD JOSEPH II, L-1840 (Street) N4 (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* Naxos Capital Partners SCA SICAR (Last) (First) (Middle) 40 BOULEVARD JOSEPH II, L-1840 (Street) N4 (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* Naxos Capital Managers S.a r.l. (Last) (First) (Middle) 40 BOULEVARD JOSEPH II L-1840 (Street) N4 (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. Naxamber, S.A. ("Naxamber") directly owns 3,370,815 shares of Common Stock. Naxamber is wholly-owned by Naxos Capital Partners SCA SICAR ("Naxos Partners"). The General Partner of Naxos Partners is Naxos Capital Managers S.a r.l. ("Naxos Managers"). Therefore, each of Naxamber, Naxos Partners and Naxos Managers may be deemed to beneficially own the shares of Common Stock directly owned by Naxamber.

	NAXOS CAPITAL PARTNERS SCA SICAR Naxos Capital Managers S.ar.l. Compagnie Financiere de Gestion Luxembourg S.A. /s/ Jacques Reckinger Name: Jacques Reckinger Title: Chief Executive Officer	05/09/2013
	NAXOS CAPITAL MANAGERS S.AR.L. Compagnie Financiere de Gestion Luxembourg S.A. /s/ Jacques Reckinger Name: Jacques Reckinger Title: Chief Executive Officer	05/09/2013
	NAXAMBER, S.A. /s/ Jacques Reckinger Name: Jacques Reckinger Title: Director	05/09/2013
	NAXAMBER, S.A. /s/ Christoph Piel Name: Christoph Piel Title: Director	05/09/2013
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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