| SC 13G/A | 2014-02-06 | COLUMBIA WANGER ASSET MANAGEMENT LLC | DONALDSON CO INC | 11,771,300 | 7.9% | EDGAR |
| SC 13G/A | 2014-01-28 | BlackRock Inc. | DONALDSON CO INC | 8,076,022 | 5.5% | EDGAR |
| SC 13G/A | 2013-02-14 | Neuberger Berman Group LLC | DONALDSON CO INC | 6,477,666 | 4.4% | EDGAR |
| SC 13G/A | 2013-02-14 | COLUMBIA WANGER ASSET MANAGEMENT LLC | DONALDSON CO INC | 12,056,300 | 8.2% | EDGAR |
| SC 13G | 2013-02-12 | VANGUARD GROUP INC | DONALDSON CO INC | 7,579,618 | 5.2% | EDGAR |
| SC 13G | 2013-02-07 | STATE FARM MUTUAL AUTOMOBILE INSURANCE CO | DONALDSON CO INC | 6,054,000 | 4.1% | EDGAR |
| SC 13G | 2013-01-30 | BlackRock Inc. | DONALDSON CO INC | 7,422,288 | 5.1% | EDGAR |
| SC 13G/A | 2012-02-14 | Neuberger Berman Group LLC | DONALDSON CO INC | 3,889,717 | 5.2% | EDGAR |
| SC 13G/A | 2012-02-10 | COLUMBIA WANGER ASSET MANAGEMENT LLC | DONALDSON CO INC | 6,243,650 | 8.4% | EDGAR |
| SC 13G/A | 2012-01-31 | STATE FARM MUTUAL AUTOMOBILE INSURANCE CO | DONALDSON CO INC | 3,027,000 | 4.1% | EDGAR |
| SC 13G | 2011-02-14 | Neuberger Berman Group LLC | DONALDSON CO INC | 4,159,084 | 5.4% | EDGAR |
| SC 13G/A | 2011-02-11 | COLUMBIA WANGER ASSET MANAGEMENT LLC | DONALDSON CO INC | 5,429,400 | 7.1% | EDGAR |
| SC 13G/A | 2011-02-08 | STATE FARM MUTUAL AUTOMOBILE INSURANCE CO | DONALDSON CO INC | 3,027,000 | 3.9% | EDGAR |
| SC 13G/A | 2010-07-08 | BlackRock Inc. | DONALDSON CO INC | 3,786,752 | 4.9% | EDGAR |
| SC 13G/A | 2010-02-09 | COLUMBIA WANGER ASSET MANAGEMENT LP | DONALDSON CO INC | 5,497,200 | 7.1% | EDGAR |
| SC 13G | 2010-01-29 | BlackRock Inc. | DONALDSON CO INC | 4,287,762 | 5.6% | EDGAR |
| SC 13G/A | 2009-02-06 | COLUMBIA WANGER ASSET MANAGEMENT LP | DONALDSON CO INC | 5,731,300 | 7.4% | EDGAR |
| SC 13G/A | 2008-01-24 | COLUMBIA WANGER ASSET MANAGEMENT LP | DONALDSON CO INC | 5,547,600 | 7.0% | EDGAR |
| SC 13G/A | 2007-10-10 | NEUBERGER BERMAN INC | DONALDSON CO INC | 3,580,501 | 4.5% | EDGAR |
| SC 13G | 2007-01-12 | COLUMBIA WANGER ASSET MANAGEMENT LP | DONALDSON CO INC | 4,456,600 | 5.5% | EDGAR |