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Washington, D.C. 20549

MEMSIC, Inc.

(Name of Issuer)

Common Stock, par value $0.00001 per share

(Title of Class of Securities)

586264103

(CUSIP Number)

February 4, 2009

(Date of Event Which Requires Filing of this Statement)

 

 

CUSIP No.		586264103		Page		2		of		15

¹ Based upon 23,790,225 shares of common stock outstanding as of November 10, 2008, as reported by the Issuer in a Form 10-Q filed on November 14, 2008.

CUSIP No.		586264103		Page		3		of		15

² The record owner of these shares is IDG-Accel China Growth Fund II L.P. By virtue of being the general partner of IDG-Accel China Growth Fund II L.P., the Reporting Person may be deemed to have sole voting and dispositive power with respect to these shares.

³ Based upon 23,790,225 shares of common stock outstanding as of November 10, 2008, as reported by the Issuer in a Form 10-Q filed on November 14, 2008.

CUSIP No.		586264103		Page		4		of		15

⁴ Based upon 23,790,225 shares of common stock outstanding as of November 10, 2008, as reported by the Issuer in a Form 10-Q filed on November 14, 2008.

CUSIP No.		586264103		Page		5		of		15

⁵ Including 2,365,182 shares of which the record owner is IDG-Accel China Growth Fund II L.P. and 193,433 shares of which the record owner is IDG-Accel China Investors II L.P. By virtue of being the ultimate general partner of both of these record holders, the Reporting Person may be deemed to have sole voting and dispositive power with respect to these shares.

⁶ Based upon 23,790,225 shares of common stock outstanding as of November 10, 2008, as reported by the Issuer in a Form 10-Q filed on November 14, 2008.

CUSIP No.		586264103		Page		6		of		15

⁷ Based upon 23,790,225 shares of common stock outstanding as of November 10, 2008, as reported by the Issuer in a Form 10-Q filed on November 14, 2008.

CUSIP No.		586264103		Page		7		of		15

⁸ Including 71,393 shares of which the Reporting Person is the record owner and 150,000 shares of which the record owner is IDG Technology Venture Investments, LP. By virtue of being the general partner of IDG Technology Venture Investments, LP, the Reporting Person may be deemed to have sole voting and dispositive power with respect to the shares of which the record owner is IDG Technology Venture Investments, LP.

⁹ Based upon 23,790,225 shares of common stock outstanding as of November 10, 2008, as reported by the Issuer in a Form 10-Q filed on November 14, 2008.

CUSIP No.		586264103		Page		8		of		15

¹⁰ Based upon 23,790,225 shares of common stock outstanding as of November 10, 2008, as reported by the Issuer in a Form 10-Q filed on November 14, 2008.

CUSIP No.		586264103		Page		9		of		15

¹¹ The record owner of these shares is IDG Technology Venture Investment III, L.P. By virtue of being the general partner of IDG Technology Venture Investment III, L.P., the Reporting Person may be deemed to have sole voting and dispositive power with respect to these shares.

¹² Based upon 23,790,225 shares of common stock outstanding as of November 10, 2008, as reported by the Issuer in a Form 10-Q filed on November 14, 2008.

CUSIP No.		586264103		Page		10		of		15

¹³ Including 2,365,182 shares of which the record owner is IDG-Accel China Growth Fund II L.P., 193,433 shares of which the record owner is IDG-Accel China Investors II L.P., 150,000 shares of which the record owner is IDG Technology Venture Investments, LP., 71,393 shares of which the record owner is IDG Technology Venture Investments, LLC, and 18,328 shares of which the record owner is IDG Technology Venture Investment III, L.P. The Reporting Person and Quan Zhou are directors and executive officers of IDG-Accel China Growth Fund GP II Associates Ltd., which is the ultimate general partner of both IDG-Accel China Growth Fund II L.P. and IDG-Accel China Investors II L.P. The Reporting Person and Quan Zhou are the managing members of IDG Technology Venture Investment III, LLC, which is the general partner of IDG Technology Venture Investment III, L.P. The Reporting Person and Quan Zhou are the managing members of IDG Technology Venture Investments, LLC, which is the general partner of IDG Technology Venture Investments, LP. By virtue of acting together to direct the management and operations of the ultimate general partners of each of the above record owners, the Reporting Person and Quan Zhou may be deemed to have shared voting and dispositive power with respect to these shares.

¹⁴ Based upon 23,790,225 shares of common stock outstanding as of November 10, 2008, as reported by the Issuer in a Form 10-Q filed on November 14, 2008.

CUSIP No.		586264103		Page		11		of		15

¹⁵ Including 2,365,182 shares of which the record owner is IDG-Accel China Growth Fund II L.P., 193,433 shares of which the record owner is IDG-Accel China Investors II L.P., 150,000 shares of which the record owner is IDG Technology Venture Investments, LP., 71,393 shares of which the record owner is IDG Technology Venture Investments, LLC, and 18,328 shares of which the record owner is IDG Technology Venture Investment III, L.P. The Reporting Person and Patrick J. McGovern are directors and executive officers of IDG-Accel China Growth Fund GP II Associates Ltd., which is the ultimate general partner of both IDG-Accel China Growth Fund II L.P. and IDG-Accel China Investors II L.P. The Reporting Person and Patrick J. McGovern are the managing members of IDG Technology Venture Investment III, LLC, which is the general partner of IDG Technology Venture Investment III, L.P. The Reporting Person and Patrick J. McGovern are the managing members of IDG Techno logy Venture Investments, LLC, which is the general partner of IDG Technology Venture Investments, LP. By virtue of acting together to direct the management and operations of the ultimate general partners of each of the above record owners, the Reporting Person and Patrick J. McGovern may be deemed to have shared voting and dispositive power with respect to these shares.

¹⁶ Based upon 23,790,225 shares of common stock outstanding as of November 10, 2008, as reported by the Issuer in a Form 10-Q filed on November 14, 2008.

CUSIP No.		586264103		Page		12		of		15

Item 1(a)		Name of Issuer:
		MEMSIC, Inc. (“Issuer”)
Item 1(b)		Address of Issuer’s Principal Executive Offices:
		One Tech Drive, Suite 325,
		Andover, MA 01810
Item 2(a)		Name of Person Filing:
		1. IDG-Accel China Growth Fund II L.P.
		2. IDG-Accel China Growth Fund II Associates L.P.
		3. IDG-Accel China Investors II L.P.
		4. IDG-Accel China Growth Fund GP II Associates Ltd.
		5. IDG Technology Venture Investments, LP
		6. IDG Technology Venture Investments, LLC
		7. IDG Technology Venture Investment III, L.P.
		8. IDG Technology Venture Investment III, LLC
		9. Patrick J. McGovern
		10. Quan Zhou
		The above persons have agreed to jointly file this statement pursuant to Rule 13d-1(k). A copy of such agreement is attached as an exhibit to this statement.
		IDG-Accel China Growth Fund II L.P. is a limited partnership organized under the laws of the Cayman Islands. The general partner of IDG-Accel China Growth Fund II L.P. is IDG-Accel China Growth Fund II Associates L.P., a limited partnership organized under the laws of the Cayman Islands. The general partner of IDG-Accel China Growth Fund II Associates L.P. is IDG-Accel China Growth Fund GP II Associates Ltd., a limited liability company incorporated under laws of the Cayman Islands. IDG-Accel China Investors II L.P. is a limited partnership organized under the laws of the Cayman Islands. The general partner of IDG-Accel China Investors II L.P. is IDG-Accel China Growth Fund GP II Associates Ltd. The directors and executive officers of IDG-Accel China Growth Fund GP II Associates Ltd. are Patrick J. McGovern and Quan Zhou.
		IDG Technology Venture Investments, LP is a Delaware limited partnership the general partner of which is IDG Technology Venture Investments, LLC. IDG Technology Venture Investment III, L.P. is a Delaware limited partnership the general partner of which is IDG Technology Venture Investment III, LLC. Patrick J. McGovern and Quan Zhou are the sole managing members of IDG Technology Venture Investments, LLC and IDG Technology Venture Investment III, LLC.
Item 2(b)		Address of Principal Business Office or, If None, Residence; Citizenship
		For all reporting persons:
		c/o IDG VC Management Ltd.
		Unit 1509, The Center
		99 Queen’s Road
		Central, Hong Kong
Item 2(c)		Citizenship

CUSIP No.		586264103		Page		13		of		15

		Each of Patrick J. McGovern and Quan Zhou is a citizen of United States of America. Each of IDG-Accel China Growth Fund II L.P., IDG-Accel China Growth Fund II Associates L.P., IDG-Accel China Investors II L.P. and IDG-Accel China Growth Fund GP II Associates Ltd. is organized under the laws of the Cayman Islands. Each of IDG Technology Venture Investments, LP, IDG Technology Venture Investments, LLC, IDG Technology Venture Investment III, L.P. and IDG Technology Venture Investment III, LLC is organized under the laws of Delaware.
Item 2(d)		Title of Class of Securities:
		Common stock, par value $0.00001
Item 2(e)		CUSIP Number:
		586264103
Item 3.		Statement Filed Pursuant to Rule 13d-1(b) or 13d-2(b) or (c):
		Not applicable.
Item 4.		Ownership
		The information for each reporting person contained in Items 5-11 of the cover pages is incorporated herein by reference.
Item 5.		Ownership of Five Percent or Less of a Class
		Not applicable.
Item 6.		Ownership of More Than Five Percent on Behalf of Another Person
		Not applicable.
Item 7.		Identification and Classification of Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person
		Not applicable.
Item 8.		Identification and Classification of Members of the Group
		Not applicable.
Item 9.		Notice of Dissolution of Group
		Not applicable.
Item 10.		Certifications
		By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

SIGNATURE

     After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Dated: February 6, 2009

IDG-ACCEL CHINA GROWTH FUND II L.P.				IDG TECHNOLOGY VENTURE INVESTMENTS, LLC
By:		IDG-Accel China Growth Fund II Associates L.P.,
		its General Partner
By:		IDG-Accel China Growth Fund GP II Associates Ltd.,
		its General Partner
By:		/s/ Quan Zhou		By:		/s/ Quan Zhou
		Name: Quan ZHOU				Name: Quan ZHOU
		Title: Authorized Signatory				Title: Authorized Signatory
IDG-ACCEL CHINA GROWTH FUND II ASSOCIATES L.P.				IDG TECHNOLOGY VENTURE INVESTMENT III, L.P.
By:		IDG-Accel China Growth Fund GP II Associates Ltd.,		By:		IDG Technology Venture Investment III, LLC,
		its General Partner				Its General Partner
By:		/s/ Quan Zhou		By:		/s/ Quan Zhou
		Name: Quan ZHOU				Name: Quan ZHOU
		Title: Authorized Signatory				Title: Authorized Signatory
IDG-ACCEL CHINA INVESTORS II L.P.				IDG TECHNOLOGY VENTURE INVESTMENT III, LLC
By:		IDG-Accel China Growth Fund GP II Associates Ltd.,
		its General Partner
By:		/s/ Quan Zhou		By:		/s/ Quan Zhou
		Name: Quan ZHOU				Name: Quan ZHOU
		Title: Authorized Signatory				Title: Authorized Signatory
IDG-ACCEL CHINA GROWTH FUND GP II ASSOCIATES LTD.				PATRICK J. MCGOVERN
By:		/s/ Quan Zhou		By:		/s/ Patrick J. McGovern
		Name: Quan ZHOU
		Title: Authorized Signatory
IDG TECHNOLOGY VENTURE INVESTMENTS, LP				QUAN ZHOU
By:		IDG Technology Venture Investments, LLC,
		its General Partner
By:		/s/ Quan Zhou		By:		/s/ Quan Zhou
		Name: Quan ZHOU
		Title: Authorized Signatory

LIST OF EXHIBITS

Exhibit No.		Description
A		Joint Filing Agreement (incorporated by reference to Exhibit A of the initial Schedule 13G filed with the Securities and Exchange Commission on Febrary 2, 2009)