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
OMB APPROVAL
OMB Number: 3235-0104
Expires: January 31, 2005
Estimated average burden hours per response... 0.5

(Print or Type Responses)
1. Name and Address of Reporting Person *
  Ho Chi Sing
2. Date of Event Requiring Statement (Month/Day/Year)
03/19/2012
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)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

CENTRAL, K3 
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 Footnotes (1) (2)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.

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
Ho Chi Sing
C/O IDG VC MANAGEMENT LTD.
UNIT 1509, THE CENTER, 99 QUEEN'S ROAD
CENTRAL, K3 
    X    

Signatures

/s/ Chi Sing Ho 03/29/2012
**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) Includes 4,146,394 shares of which the record owner is IDG-Accel China Growth Fund II L.P. ("IDG China Fund LP"), 339,108 shares of which the record owner is IDG-Accel China Investors II L.P. ("IDG China Investors LP"), 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 China Fund LP and may be deemed to have beneficial ownership over the 4,146,394 shares held by IDG China Fund LP. The Reporting Person and Quan Zhou are the directors and executive officers of IDG-Accel China Growth Fund GP II Associates Ltd., which is the ultimate general partner of both IDG China Fund LP and IDG China Investors LP. (Continued footnote 2)
(2) 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. 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. 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 Quan Zhou may be deemed to have shared voting and dispositive power with respect to these shares. Each of the Reporting Person and Quan Zhou disclaims beneficial ownership of the shares, except to the extent of his pecuniary interest therein.
 
Remarks:
This report is being separately filed by the Reporting Person due to his replacing Patrick J. McGovern as director, executive officer and/or managing member of IDG-Accel China Growth Fund GP II Associates Ltd., IDG Technology Venture Investments, LLC and IDG Technology Venture Investment III, LLC on March 19, 2012. IDG China Fund LP, IDG-Accel China Growth Fund II Associates L.P., IDG-Accel China Growth Fund GP II Associates Ltd. and Quan Zhou previously jointly filed a Form 3 in relation to the shares reported in this filing on March 28, 2011.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, See Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.