Donaldson Co., Inc. engages in the manufacture of filtration systems and replacement parts. It operates through the following segments: Mobile Solutions, Industrial Solutions, and Life Sciences. The Mobile Solutions segment is involved deals with replacement filters for both air and liquid filtration applications and filtration housings for new equipment production and systems related to exhaust and emissions. The Industrial Solutions segment focuses on industrial air filtration, industrial gases, industrial hydraulics, power generation and aerospace, and defense business units. The Life Sciences segment consists of bioprocessing, food and beverage, medical device, vehicle electrification, microelectronics and disk drive business units. The company was founded by Frank Donaldson Sr. in 1915 and is headquartered in Minneapolis, MN. |  |
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| Insider Trading |
Relationship |
Date |
Transaction |
Cost |
#Shares |
Value ($) |
#Shares Total |
SEC Form 4 |
| WILLARD OBERTON | Former Affiliate | Jan 29 '26 | Proposed Sale | 101.83 | 1,380 | 140,527 | | Jan 29 04:09 PM | | WILLARD OBERTON | Former Affiliate | Jan 22 '26 | Proposed Sale | 103.19 | 820 | 84,619 | | Jan 22 04:12 PM | | WILLARD OBERTON | Former director | Jan 02 '26 | Proposed Sale | 89.82 | 11,000 | 988,050 | | Jan 02 04:21 PM | | Pogalz Bradley J. | Chief Financial Officer | Dec 09 '25 | Option Exercise | 28.00 | 1,000 | 28,000 | 1,000 | Dec 10 05:04 PM | | Pogalz Bradley J. | Chief Financial Officer | Dec 09 '25 | Sale | 91.57 | 566 | 51,829 | 434 | Dec 10 05:04 PM | | BRADLEY J POGALZ | Officer | Dec 09 '25 | Proposed Sale | 91.57 | 566 | 51,829 | | Dec 09 04:43 PM | | Rajendra Ajita G | Director | Dec 05 '25 | Option Exercise | 44.49 | 19,800 | 880,968 | 57,193 | Dec 08 01:22 PM | | Rajendra Ajita G | Director | Dec 05 '25 | Sale | 92.04 | 19,800 | 1,822,392 | 43,993 | Dec 08 01:22 PM | | AJITA G RAJENDRA | Director | Dec 05 '25 | Proposed Sale | 92.04 | 19,800 | 1,822,372 | | Dec 05 04:13 PM | | ANDREW DAHLGREN | Former officer | Oct 15 '25 | Proposed Sale | 82.24 | 7,852 | 645,776 | | Oct 15 04:04 PM | | Lewis Richard Brent | President | Oct 02 '25 | Option Exercise | 28.00 | 13,500 | 378,000 | 53,279 | Oct 03 12:01 PM | | Briseno Guillermo | President | Sep 03 '25 | Option Exercise | 28.00 | 13,500 | 378,000 | 38,809 | Sep 04 12:26 PM | | Briseno Guillermo | President | Sep 03 '25 | Sale | 79.03 | 13,500 | 1,066,905 | 25,309 | Sep 04 12:26 PM | | GUILLERMO BRISENO DEIBERT | Officer | Sep 03 '25 | Proposed Sale | 79.03 | 13,500 | 1,066,871 | | Sep 03 04:17 PM | | Rautio Trudy A. | Director | Aug 28 '25 | Option Exercise | 34.15 | 31,900 | 1,089,473 | 48,030 | Sep 02 12:28 PM | | Rautio Trudy A. | Director | Aug 28 '25 | Sale | 79.96 | 31,900 | 2,550,724 | 29,330 | Sep 02 12:28 PM | | Dahlgren Andrew C | President | Aug 28 '25 | Option Exercise | 28.00 | 3,000 | 84,000 | 10,504 | Sep 02 12:26 PM | | Dahlgren Andrew C | President | Aug 28 '25 | Sale | 81.96 | 3,000 | 245,880 | 7,504 | Sep 02 12:26 PM | | Carpenter Tod E. | Chairman, President and CEO | Aug 28 '25 | Option Exercise | 28.00 | 100,500 | 2,814,000 | 380,761 | Sep 02 12:25 PM | | Carpenter Tod E. | Chairman, President and CEO | Aug 28 '25 | Sale | 80.62 | 100,500 | 8,102,310 | 280,261 | Sep 02 12:25 PM | | Becker Amy C | Chief Legal Officer | Aug 28 '25 | Option Exercise | 28.00 | 18,500 | 518,000 | 63,145 | Sep 02 12:23 PM | | Becker Amy C | Chief Legal Officer | Aug 28 '25 | Sale | 81.71 | 18,500 | 1,511,635 | 44,645 | Sep 02 12:23 PM | | ANDREW DAHLGREN | Officer | Aug 28 '25 | Proposed Sale | 81.96 | 3,000 | 245,879 | | Aug 28 04:14 PM | | AMY BECKER | Officer | Aug 28 '25 | Proposed Sale | 81.71 | 18,500 | 1,511,666 | | Aug 28 04:12 PM | | TRUDY A RAUTIO | Director | Aug 28 '25 | Proposed Sale | 79.96 | 31,900 | 2,550,593 | | Aug 28 04:09 PM | | TOD E CARPENTER | Officer | Aug 28 '25 | Proposed Sale | 80.62 | 100,500 | 8,101,998 | | Aug 28 04:06 PM | | Carpenter Tod E. | Chairman, President and CEO | Jul 10 '25 | Sale | 71.71 | 45,808 | 3,284,892 | 280,261 | Jul 10 05:02 PM | | Carpenter Tod E. | Chairman, President and CEO | Jul 08 '25 | Sale | 71.07 | 12,033 | 855,185 | 280,261 | Jul 10 05:02 PM | | Carpenter Tod E. | Chairman, President and CEO | Jul 09 '25 | Sale | 71.00 | 2,159 | 153,289 | 280,261 | Jul 10 05:02 PM | | TOD CARPENTER | Officer | Jul 10 '25 | Proposed Sale | 71.71 | 45,808 | 3,285,006 | | Jul 10 04:09 PM | | TOD CARPENTER | Officer | Jul 09 '25 | Proposed Sale | 71.00 | 2,159 | 153,289 | | Jul 09 04:15 PM | | TOD CARPENTER | Officer | Jul 08 '25 | Proposed Sale | 71.07 | 12,033 | 855,154 | | Jul 08 04:12 PM | | Lewis Richard Brent | President | Jun 04 '25 | Option Exercise | 35.80 | 10,000 | 358,000 | 41,201 | Jun 05 02:57 PM | | OBERTON WILLARD D | Director | Jun 04 '25 | Option Exercise | 28.43 | 7,000 | 199,010 | 36,661 | Jun 05 02:50 PM | | OBERTON WILLARD D | Director | Jun 04 '25 | Sale | 69.51 | 7,000 | 486,570 | 29,661 | Jun 05 02:50 PM | | WILLARD OBERTON | Officer | Jun 04 '25 | Proposed Sale | 69.51 | 7,000 | 486,589 | | Jun 04 04:14 PM | | Owens James | Director | Apr 10 '25 | Option Exercise | 28.43 | 18,700 | 531,641 | 38,946 | Apr 11 10:19 AM | | Owens James | Director | Apr 10 '25 | Sale | 62.02 | 18,700 | 1,159,774 | 20,246 | Apr 11 10:19 AM | | JAMES J OWENS | Director | Apr 10 '25 | Proposed Sale | 62.02 | 18,700 | 1,159,836 | | Apr 10 05:11 PM |
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