Donaldson Company, Inc. Additional Definitive Proxy Materials




Proxy Statement Pursuant to Section 14(a) of the Securities

Exchange Act of 1934 (Amendment No.      )


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[_]   Preliminary Proxy Statement


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[_]   Definitive Proxy Statement


[X]   Definitive Additional Materials


[_]   Soliciting Material Pursuant to § 240.14a-12


Donaldson Company, Inc.

(Name of Registrant as Specified In Its Charter)



(Name of Person(s) Filing Proxy Statement, if other than the Registrant)


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*** Exercise Your Right to Vote***

IMPORTANT NOTICE Regarding the Availability of Proxy Materials



Meeting Information




Meeting Type: Annual Meeting

For holders as of: September 23, 2009


Date: November 20, 2009 Time: 1:00 PM CST



Donaldson Company, Inc.
Campus West

P.O. BOX 1299
MINNEAPOLIS, MN 55440-1299


2001 West 94th Street


Minneapolis, Minnesota

You are receiving this communication because you hold shares in the above named company.

This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at or easily request a paper copy (see reverse side).

We encourage you to access and review all of the important information contained in the proxy materials before voting.



See the reverse side of this notice to obtain proxy materials and voting instructions.





— Before You Vote —

How to Access the Proxy Materials


Proxy Materials Available to VIEW or RECEIVE:

1. Notice & Proxy Statement      2. Shareholder Letter      3. Form 10-K
How to View Online:
Have the 12-Digit Control Number available (located on the following page) and visit:
How to Request and Receive a PAPER or E-MAIL Copy:
If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request:




BY TELEPHONE:   1-800-579-1639




If requesting materials by e-mail, please send a blank e-mail with the 12-Digit Control Number (located on the following page) in the subject line.

Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before November 08, 2009 to facilitate timely delivery.


— How To Vote —

Please Choose One of The Following Voting Methods


Vote In Person: Many shareholder meetings have attendance requirements including, but not limited to, the possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for meeting attendance. At the Meeting you will need to request a ballot to vote these shares.

Vote By Internet: To vote now by Internet, go to Have the 12 Digit Control Number available and follow the instructions.

Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card.







Voting items

The Board of Directors recommends that you vote

FOR the following:


1.  Election of Directors



01  Jack W. Eugster  

02  John F. Grundhofer  

03  Paul David Miller



The Board of Directors recommends you vote FOR the following proposal(s):



Ratify the appointment of PricewaterhouseCoopers LLP as Donaldson Company, Inc’s independent registered public accounting firm to audit the Company’s financial statements for the fiscal year ending July 31, 2010.


NOTE: Such other business as may properly come before the meeting or any adjournment thereof.