Exhibit
4.2


 




	
  

  	
  THIS CERTIFIES
  THAT is the owner of CUSIP DATED COUNTERSIGNED AND REGISTERED: COMPUTERSHARE
  TRUST COMPANY, N.A . TRANSFER AGENT AND REGISTRAR, By AUTHORIZED SIGNATURE
  FULLY-PAID AND NON-ASSESSABLE SHARES OF THE COMMON STOCK OF Ecolab Inc. transferable
  on the books of the Corporation by the holder hereof in person or by duly
  authorized attorney upon surrender of this certificate properly endorsed.
  This certificate is not valid unless countersigned by the Transfer Agent and
  registered by the Registrar. Witness the facsimile seal of the Corporation
  and the facsimile signatures of its duly authorized officers. COMMON STOCK
  PAR VALUE $1.00 COMMON STOCK THIS CERTIFICATE IS TRANSFERABLE IN CANTON, MA
  AND NEW YORK, NY SEE REVERSE FOR CERTAIN DEFINITIONS Certificate Number
  Shares . ECOLAB INC. INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE
  Chairman of the Board Secretary 016570| 003590|127C|RESTRICTED||4|057-423
  278865 10 0 <<Month Day, Year>> WWWW 00000000 * * 600620* * * * *
  * * * * 600620* * * * * * * * * 600620* * * * * * * * * 600620* * * * * * * *
  * 600620* * ** Mr. Alexander David Sample **** Mr. Alexander David Sample
  **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr.
  Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander
  David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample
  **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr.
  Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander
  David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample
  **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr.
  Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander
  David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample
  **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr.
  Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander
  David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample
  **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr.
  Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander
  David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample
  **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr.
  Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander
  David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample
  **** Mr. Alexander David Sample **** Mr. Alexander David Sample **** Mr.
  Alexander David Sample **** Mr. Alexander David Sample **** Mr. Alexander
  David Sample **** Mr. Alexander David Sample **** Mr. Alexander David Sample
  **** Mr. Alexander David Sample **** Mr. Sample **** Mr. Sample
  **600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares***
  *600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****
  600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****6
  00620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****60
  0620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600
  620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares***600620**Shares****600620**Shares****60062
  0**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620
  **Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620*
  *Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**
  Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**S
  hares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Shares****600620**Sh
  * * * SIX HUNDRED THOUSAND SIX HUNDRED AND TWENTY* * * MR. SAMPLE & MRS.
  SAMPLE & MR. SAMPLE & MRS. SAMPLE NNNNN . Certificate Numbers
  1234567890/1234567890 1234567890/1234567890 1234567890/1234567890
  1234567890/1234567890 1234567890/1234567890 1234567890/1234567890 Total
  Transaction Num/No. 123456 Denom. 123456 Total 1234567 MR A SAMPLE
  DESIGNATION (IF ANY) ADD 1 ADD 2 ADD 3 ADD 4 PO Box A3480 Chicago IL
  60690-3480 CUSIP 278865 10 0 Holder ID XXXXXXXXXX Insurance Value
  1,000,000.00 Number of Shares 123456 DTC 12345678 123456789012345 

  






 
















	
  

  	
  THE CORPORATION
  WILL FURNISH, WITHOUT CHARGE, TO EACH STOCKHOLDER WHO SO REQUESTS, A PRINTED
  STATEMENT OF THE POWERS, DESIGNATIONS, PREFERENCES AND RELATIVE,
  PARTICIPATING, OPTIONAL OR OTHER SPECIAL RIGHTS OF EACH CLASS OF STOCK OR
  SERIES THEREOF WHICH THE CORPORATION IS AUTHORIZED TO ISSUE AND THE
  QUALIFICATIONS, LIMITATIONS OR RESTRICTIONS OF SUCH PREFERENCES AND/OR
  RIGHTS. REQUESTS MAY BE DIRECTED TO THE SECRETARY OF ECOLAB INC. AT ITS
  PRINCIPAL OFFICE, OR THE TRANSFER AGENT NAMED ON THE FACE OF THIS
  CERTIFICATE. 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 UNIF GIFT MIN ACT- . . . . . . . . . .Custodian . . . . . . . . . . .
  . . . . TEN ENT - as tenants by the entireties under Uniform Gifts to Minors
  Act . . . . . . . . . . . . . JT TEN - as joint tenants with right of
  survivorship UNIF TRF MIN ACT . . . . . . . . . . . . . . .Custodian (until
  age. . . ). . . . . . . . . . . and not as tenants in common (Cust) (Minor)
  under Uniform Transfers 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     Shares 
  Attorney Dated: 20 Signature: Signature: Notice: The signature to this
  assignment must correspond with the name as written upon the face of the
  certificate, in every particular, without alteration or enlargement, or any
  change whatever. (Cust) (Minor) (State) PLEASE INSERT SOCIAL SECURITY OR
  OTHER IDENTIFYING NUMBER OF ASSIGNEE (PLEASE PRINT OR TYPEWRITE NAME AND
  ADDRESS, INCLUDING POSTAL ZIP CODE, OF ASSIGNEE) of the common stock
  represented by the within Certificate, and do hereby irrevocably constitute
  and appoint to transfer the said stock on the books of the within-named
  Corporation with full power of substitution in the premises. . ECOLAB INC.
  Signature(s) Guaranteed: Medallion Guarantee Stamp THE SIGNATURE(S) SHOULD 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.