Form of common stock certificate



 Exhibit 4.2 
 

 
 M 
 CUSIP 586264 10 3 
 SEE REVERSE FOR CERTAIN DEFINITIONS 
 THIS CERTIFIES that 
 is the owner of 
 INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE 
 MEMSIC, Inc. 
 PRESIDENT SECRETARY 
 FULLY PAID AND NON-ASSESSABLE SHARES OF THE COMMON STOCK, PAR VALUE OF $0.00001 EACH OF

 MEMSIC, Inc. 
 COMMON STOCK 
 The shares represented by this certificate are transferable only on the stock transfer books
of the Corporation by the holder of record hereof, or by such holder’s 
 duly authorized attorney or legal
representative, upon the surrender of this certificate properly endorsed. This certificate and the shares represented thereby are 
 issued and shall be subject to all of the provisions of the Articles of Incorporation and Bylaws of the Corporation and any amendments thereto of which provisions 
 the holder by acceptance hereof, assents. 
 This certificate is not valid unless countersigned and registered by the Transfer Agent and Registrar. 
 IN WITNESS WHEREOF, the Corporation has caused this certificate to be signed by its duly authorized officers and the seal of 
 the Corporation to be affixed hereunto. 
 Dated: 
 MEMSIC, Inc. 
 SEAL 
 DELAWARE 
 CORPORATE 
 COUNTERSIGNED AND REGISTERED: 
 AMERICAN STOCK TRANSFER & TRUST COMPANY

 (New York, NY) 
 TRANSFER AGENT AND REGISTRAR 
 BY: 
 AUTHORIZED SIGNATURE 
 SIGNATURE TO COME SIGNATURE TO COME 
 AMERICAN BANK NOTE COMPANY 
 711 ARMSTRONG LANE 
 COLUMBIA, TENNESSEE 38401 
 (931) 388-3003 
 SALES: CHARLES SHARKEY 302-731-7088 
 7 / LIVE JOBS / M / Memsic 28866 FC 
 PRODUCTION COORDINATOR: DENISE LITTLE 931-490-1706 

PROOF OF: DECEMBER 5, 2007 
 MEMSIC, INC. 
 TSB 28866 FC 
 OPERATOR: AP 
 Rev. 1 
 COLORS SELECTED FOR PRINTING: Intaglio prints in SC-3 dark green. 
 COLOR: This proof was printed from a digital file or artwork on a graphics quality, color laser printer. It is a good representation of
the color as it will appear on the final product. 
 However, it is not an exact color rendition, and the final printed
product may appear slightly different from the proof due to the difference between the dyes and printing ink. 
 PLEASE
INITIAL THE APPROPRIATE SELECTION FOR THIS PROOF: OK AS IS OK WITH CHANGES MAKE CHANGES AND SEND ANOTHER PROOF 







 

 
 The Corporation shall furnish without charge to each stockholder who so requests a statement of
the powers, designations, preferences and relative, participating, optional or other special rights of each class of stock of the Corporation or series thereof and the qualifications, limitations or restrictions of such preferences and/or rights.
Such requests shall be made to the Corporation. 
 The following abbreviations, when used in the inscription on the face of
this certificate, shall be construed as though they were written out in full according to applicable laws or regulations: 
 TEN COM - as tenants in common 
 TEN ENT - as tenants by the entireties 
 JT TEN - as joint tenants with right of survivorship and not as tenants in common 
 UNIF GIFT MIN ACT- Custodian 
 (Cust) (Minor) 
 under Uniform Gifts to Minors 
 Act 
 (State)

 Additional abbreviations may also be used though not in the above list. 
 FOR VALUE RECEIVED, hereby sell, assign and transfer unto 
 PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE 
 (PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE) 
 Shares of the common stock
represented by the within Certificate, and do hereby irrevocably constitute and appoint 
 Attorney to transfer the said stock
on the books of the within named Corporation with full power of substitution in the premises. 
 Dated 
 X 
 X

 NOTICE: 
 THE SIGNATURE(S) TO THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME(S) AS WRITTEN UPON THE FACE OF THE CERTIFICATE IN EVERY PARTICULAR, WITHOUT ALTERATION OR ENLARGEMENT, OR ANY CHANGE WHATEVER. 
 Signature(s) Guaranteed 
 By 
 THE SIGNATURE(S) MUST BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS
AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM), PURSUANT TO S.E.C. RULE 17Ad-15. 
 AMERICAN BANK NOTE COMPANY 
 711 ARMSTRONG LANE 
 COLUMBIA, TENNESSEE 38401 
 (931) 388-3003 
 SALES: CHARLES SHARKEY 302-731-7088 
 7 / LIVE JOBS / M / Memsic 28866 BK 
 PRODUCTION COORDINATOR: DENISE LITTLE 931-490-1706 
 PROOF OF: DECEMBER 4, 2007 
 MEMSIC, INC. 
 TSB 28866 BK 
 OPERATOR: AP 
 NEW 
 PLEASE INITIAL THE APPROPRIATE SELECTION FOR THIS PROOF: OK AS IS OK
WITH CHANGES MAKE CHANGES AND SEND ANOTHER PROOF