Ownership Submission
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, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  Zhou Quan
2. Date of Event Requiring Statement (Month/Day/Year)
03/16/2011
3. Issuer Name and Ticker or Trading Symbol
MEMSIC Inc [MEMS]
(Last)
(First)
(Middle)
C/O IDG VC MANAGEMENT LTD., UNIT 1509, THE CENTER, 99 QUEEN'S ROAD
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

CENTRAL, HONG KONG 
6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
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 4,725,223
I
See Footnote (1) (2)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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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 of Derivative Security: 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

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Zhou Quan
C/O IDG VC MANAGEMENT LTD., UNIT 1509
THE CENTER, 99 QUEEN'S ROAD
CENTRAL, HONG KONG 
  X   X    

Signatures

/s/ Patricia Niu, attorney-in-fact 03/25/2011
**Signature of Reporting Person Date

Explanation of Responses:

* 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).
(1) Including 4,146,394 shares of which the record owner is IDG-Accel China Growth Fund II L.P., 339,108 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. IDG-Accel China Growth Fund II Associates L.P. is the general partner of IDG-Accel China Growth Fund II L.P. and may be deemed to have beneficial ownership over the 4,146,394 shares held by IDG-Accel China Growth Fund II L.P. The Reporting Person and Patrick 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 McGovern (continued in Footnote 2)
(2) (continued from Footnote 1)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 to direct the management and operations of the ultimate general partners of each of the above record owners, the Reporting Person and Patrick McGovern may be deemed to have shared voting and dispositive power with respect to these shares. Each of the reporting person and Patrick McGovern disclaims beneficial ownership of these shares, except to the extent of his pecuniary interest in such shares.
 
Remarks:
Exhibit 24 - Confirming Statement for Quan Zhou.  Patrick McGovern, IDG-Accel China Growth Fund II L.P., IDG-Accel China Growth Fund II Associates L.P., and IDG-Accel China Growth Fund GP II Associates Ltd. are jointly filing a separate report under Section 16 and are therefore not included as reporting persons on this report.

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