DD's three largest insider shareholders as of September 09, 2026 are Lori Koch (Ceo, 117.28K shares), Erik T. Hoover (Svp General Counsel, 117.27K shares), Lori Koch (Ceo, 115.06K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Lori Koch | Ceo | 115,056 | 0 | 115,056 | 16.2% | 02 Jun, 2026 |
| 2 | Randy Lee Stone | President, Mobility Material | 93,954 | 0 | 93,954 | 13.2% | 04 Mar, 2022 |
| 3 | Edward D Breen | Executive Chair | 91,325 | 0 | 91,325 | 12.9% | 06 May, 2026 |
| 4 | Leland Weaver | President, Water Protection | 51,032 | 0 | 51,032 | 7.2% | 25 Feb, 2025 |
| 5 | Jon D. Kemp | President, Electronicsco. | 50,023 | 0 | 50,023 | 7.0% | 06 May, 2025 |
| 6 | Steven P. Larrabee | Svp Cio | 45,364 | 0 | 45,364 | 6.4% | 04 Nov, 2025 |
| 7 | Erik T. Hoover | Svp General Counsel | 38,657 | 0 | 38,657 | 5.4% | 06 May, 2026 |
| 8 | Christopher Raia | Senior Vice President Chro | 28,637 | 0 | 28,637 | 4.0% | 06 May, 2026 |
| 9 | Alexander M Cutler | Director | 27,265 | 0 | 27,265 | 3.8% | 02 Jun, 2026 |
| 10 | Antonella B Franzen | Svp Cfo | 22,936 | 0 | 22,936 | 3.2% | 02 Jun, 2026 |
| 11 | Deanna Mulligan | Director | 17,928 | 0 | 17,928 | 2.5% | 04 Mar, 2025 |
| 12 | Pont Eleuthere I Du | Director | 14,124 | 0 | 14,124 | 2.0% | 28 May, 2026 |
| 13 | Frederick M. Lowery | Director | 13,862 | 0 | 13,862 | 2.0% | 01 Sep, 2026 |
| 14 | Raj Ratnakar | Svp Chief Strategy Officer | 10,573 | 0 | 10,573 | 1.5% | 05 Sep, 2023 |
| 15 | Terrence R Curtin | Director | 10,322 | 0 | 10,322 | 1.5% | 03 Sep, 2025 |
| 16 | Luther C Iv Kissam | Director | 8,666 | 0 | 8,666 | 1.2% | 27 May, 2025 |
| 17 | Ruby R Chandy | Director | 8,481 | 0 | 8,481 | 1.2% | 28 May, 2026 |
| 18 | Jeroen Bloemhard | President, Hc And Water Tech | 8,257 | 0 | 8,257 | 1.2% | 24 Feb, 2026 |
| 19 | Amy G. Brady | Director | 7,927 | 0 | 7,927 | 1.1% | 28 May, 2026 |
| 20 | Steven Sterin | Director | 7,130 | 0 | 7,130 | 1.0% | 27 May, 2025 |
| 21 | Raymond J Milchovich | Director | 6,808 | 0 | 6,808 | 1.0% | 25 May, 2023 |
| 22 | Michael G. Goss | Controller | 6,759 | 0 | 6,759 | 1.0% | 06 May, 2025 |
| 23 | Beth Ferreira | President, Diversified Indstrl | 6,560 | 0 | 6,560 | 0.9% | 10 Aug, 2026 |
| 24 | Matthew S Abbott | Svp, Cio | 4,149 | 0 | 4,149 | 0.6% | 24 Feb, 2026 |
| 25 | James A Lico | Director | 3,613 | 0 | 3,613 | 0.5% | 28 May, 2026 |
| 26 | Kristina M Johnson | Director | 3,612 | 0 | 3,612 | 0.5% | 27 May, 2025 |
| 27 | Kurt B Mcmaken | Director | 2,753 | 0 | 2,753 | 0.4% | 28 May, 2026 |
| 28 | Donald G Macpherson | Director | 2,196 | 0 | 2,196 | 0.3% | 01 Sep, 2026 |
| 29 | Madeleine G Barber | Vp Chief Accounting Officer | 1,793 | 0 | 1,793 | 0.3% | 10 Aug, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 28 Aug, 2026 | Frederick M. Lowery | Director | Acquired A | 283 | $136.98 | $38.75K | 13,862 | Direct |
| 28 Aug, 2026 | Donald G Macpherson | Director | Acquired A | 237 | $136.98 | $32.50K | 2,196 | Direct |
| 28 Aug, 2026 | Alexander M Cutler | Director | Acquired A | 365 | $136.98 | $50.00K | 25,155 | Direct |
| 06 Aug, 2026 | Beth Ferreira | President, Diversified Indstrl | Disposed F | 374 | $146.38 | $54.71K | 6,560 | Direct |
| 06 Aug, 2026 | Madeleine G Barber | Vp Chief Accounting Officer | Disposed F | 101 | $146.38 | $14.76K | 1,793 | Direct |
| 06 Aug, 2026 | Beth Ferreira | President, Diversified Indstrl | Disposed F | 374 | $146.38 | $54.71K | 6,560 | Direct |
| 29 May, 2026 | Donald G Macpherson | Director | Acquired A | 671 | $145.26 | $97.50K | 1,956 | Direct |
| 29 May, 2026 | Alexander M Cutler | Director | Acquired A | 1,033 | $145.26 | $150.00K | 27,265 | Direct |
| 29 May, 2026 | Frederick M. Lowery | Director | Acquired A | 800 | $145.26 | $116.25K | 13,402 | Direct |
| 31 May, 2026 | Lori Koch | Ceo | Disposed F | 4,673 | $144.09 | $673.27K | 115,056 | Direct |
| 31 May, 2026 | Antonella B Franzen | Svp Cfo | Disposed F | 1,558 | $144.09 | $224.52K | 22,936 | Direct |
| 02 Jun, 2026 | Lori Koch | Ceo | Disposed S | 261 | $146.46 | $38.22K | 0 | Indirect |
| 21 May, 2026 | James A Lico | Director | Acquired A | 4,030 | $0.00 | $0 | 3,613 | Direct |
| 21 May, 2026 | Donald G Macpherson | Director | Acquired A | 4,030 | $0.00 | $0 | 1,732 | Direct |
| 21 May, 2026 | Amy G. Brady | Director | Acquired A | 4,030 | $0.00 | $0 | 7,927 | Direct |
| 21 May, 2026 | Ruby R Chandy | Director | Acquired A | 4,030 | $0.00 | $0 | 8,481 | Direct |
| 21 May, 2026 | Pont Eleuthere I Du | Director | Acquired A | 4,030 | $0.00 | $0 | 14,124 | Direct |
| 21 May, 2026 | Edward D Breen | Director | Acquired A | 4,030 | $0.00 | $0 | 92,668 | Direct |
| 21 May, 2026 | Frederick M. Lowery | Director | Acquired A | 4,030 | $0.00 | $0 | 13,135 | Direct |
| 21 May, 2026 | Kurt B Mcmaken | Director | Acquired A | 4,030 | $0.00 | $0 | 2,753 | Direct |