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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
29644	Donaldson Co Inc	DCI	Industrial & Commercial Fans & Blowers & Air Purifing Equip (3564)	410222640

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1282228	R Thomas Verhage	1400 West 94Th Street Bloomington MN 55413	Vice President	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2010-03-25	6,485	$45.70	49,463	No	4	S	Direct
Common Stock	Disposition	2010-03-26	10,015	$45.94	39,448	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Direct
No	4	S	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	676	Indirect	By Benefit Plan Trust
Common Stock	264	Indirect	By Benefit Plan Trust

Footnotes

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at a price ranging from $45.87 - $45.97, inclusive. The reporting person undertakes to provide to Donaldson Company, Inc., any security holder of Donaldson Company, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (1) to this Form 4.