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* MITSUI & CO LTD (Last) (First) (Middle) 2-1, OHTEMACHI 1-CHOME, CHIYODA-KU (Street) TOKYO M0 100-0004 (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	793,625	D
Common Stock	499,940	I	MCVP Technology Fund I, LLC(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
Warrants (right to buy)	04/15/2011	04/15/2021	Common Stock	15,750	$10.547	I	MCVP Technology Fund I, LLC(1)

1. Name and Address of Reporting Person* MITSUI & CO LTD (Last) (First) (Middle) 2-1, OHTEMACHI 1-CHOME, CHIYODA-KU (Street) TOKYO M0 100-0004 (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* MCVP TECHNOLOGY FUND I, LLC (Last) (First) (Middle) C/O MITSUI & CO. GLOBAL INVESTMENT, INC. 200 PARK AVENUE (Street) NEW YORK NY 10166 (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 reported securities are owned directly by MCVP Technology Fund I, LLC. Mitsui & Co., Ltd., MCVP Holding, Inc. and Mitsui & Co. Venture Partners, III LLC may be deemed to beneficially own the reported securities but disclaim beneficial ownership of such securities except to the extent of their pecuniary interests therein.

	MITSUI & CO., LTD. By: /s/ Wataru Ebata Name: Wataru Ebata Title: General Manager, Principal Investment Division	05/09/2013
	MCVP TECHNOLOGY FUND I, LLC, by Mitsui & Co. Global Investment, Inc., its manager By: /s/ Kenichi Kimura Name: Kenichi Kimura Title: President & CEO	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).
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