Waste Connections's top three insider shareholders as of September 29, 2026 are Ronald J Mittelstaedt (President Ceo, 301.02K shares), Worthing Jackman (President And Ceo, 149.16K shares), Worthing Jackman (President And Ceo, 123.05K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Ronald J Mittelstaedt | President Ceo | 301,017 | 0 | 301,017 | 29.8% | 13 May, 2026 |
| 2 | Worthing Jackman | President And Ceo | 272,203 | 0 | 272,203 | 26.9% | 22 Feb, 2023 |
| 3 | Darrell W Chambliss | Evp Coo | 92,000 | 0 | 92,000 | 9.1% | 10 Jun, 2025 |
| 4 | Mary Anne Whitney | Executive Vice President Cfo | 62,435 | 0 | 62,435 | 6.2% | 20 Feb, 2026 |
| 5 | Matthew Stephen Black | Sr Vp Chief Tax Officer | 43,530 | 0 | 43,530 | 4.3% | 02 Jul, 2026 |
| 6 | James Little | Executive Vp Engineering | 34,395 | 0 | 34,395 | 3.4% | 29 Apr, 2026 |
| 7 | Jason Craft | Executive Vice President Coo | 32,915 | 0 | 32,915 | 3.3% | 02 Jul, 2026 |
| 8 | David Eddie | Sr Vp Performance Optimization | 30,647 | 0 | 30,647 | 3.0% | 21 Feb, 2024 |
| 9 | Patrick James Shea | Exec Vp, General Counsel Sec | 19,622 | 0 | 19,622 | 1.9% | 09 Jun, 2026 |
| 10 | Edward E Guillet | Director | 15,171 | 0 | 15,171 | 1.5% | 18 Feb, 2026 |
| 11 | Eric Hansen | Senior Vice President And Cio | 13,350 | 0 | 13,350 | 1.3% | 04 May, 2026 |
| 12 | Susan Netherton | Sr Vp People, Training Dev | 12,980 | 0 | 12,980 | 1.3% | 17 Aug, 2026 |
| 13 | Susan Lee | Director | 12,204 | 0 | 12,204 | 1.2% | 18 Feb, 2026 |
| 14 | Robert Michael Cloninger | Sr Vp, Deputy General Counsel | 11,666 | 0 | 11,666 | 1.2% | 30 Jul, 2026 |
| 15 | Larry Sanford Hughes | Director | 11,384 | 0 | 11,384 | 1.1% | 21 Feb, 2024 |
| 16 | Domenic Pio | Sr Vp Operations | 9,188 | 0 | 9,188 | 0.9% | 02 Jul, 2026 |
| 17 | Aaron Bradley | Sr Vp Performance Optimization | 8,624 | 0 | 8,624 | 0.9% | 02 Jul, 2026 |
| 18 | Michael W Harlan | Director | 8,575 | 0 | 8,575 | 0.8% | 18 Feb, 2026 |
| 19 | David M Hall | Sr. Vice President Sales | 5,099 | 0 | 5,099 | 0.5% | 23 Feb, 2022 |
| 20 | William J Razzouk | Director | 3,273 | 0 | 3,273 | 0.3% | 21 Feb, 2024 |
| 21 | Iii Robert Nielsen | Sr Vp Operations | 3,250 | 0 | 3,250 | 0.3% | 21 Aug, 2026 |
| 22 | Elise Lipman Jordan | Director | 3,224 | 0 | 3,224 | 0.3% | 18 Feb, 2026 |
| 23 | Derek Tan | Sr Vp Chief Accounting Officer | 1,404 | 0 | 1,404 | 0.1% | 06 Mar, 2026 |
| 24 | Philip Rivard | Sr Vp Business Development | 734 | 0 | 734 | 0.1% | 20 Aug, 2026 |
| 25 | Carl Sparks | Director | 728 | 0 | 728 | 0.1% | 18 Feb, 2026 |
| 26 | Cherylyn Harley Lebon | Director | 698 | 0 | 698 | 0.1% | 18 Feb, 2026 |
| 27 | Andrea E. Bertone | Director | 288 | 0 | 288 | 0.0% | 18 Feb, 2026 |
| 28 | Daniel L Florness | Director | 154 | 0 | 154 | 0.0% | 03 Apr, 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 |
|---|---|---|---|---|---|---|---|---|
| 19 Aug, 2026 | Iii Robert Nielsen | Sr Vp Operations | Disposed S | 700 | $170.00 | $119.00K | 3,250 | Direct |
| 18 Aug, 2026 | Philip Rivard | Sr Vp Business Development | Disposed S | 2,500 | $166.57 | $416.43K | 734 | Direct |
| 13 Aug, 2026 | Susan Netherton | Sr Vp People, Training Dev | Disposed S | 1,750 | $166.00 | $290.50K | 12,980 | Direct |
| 29 Jul, 2026 | Iii Robert Nielsen | Sr Vp Operations | Disposed S | 300 | $173.10 | $51.93K | 3,950 | Direct |
| 28 Jul, 2026 | Robert Michael Cloninger | Sr Vp, Deputy General Counsel | Disposed S | 2,573 | $171.00 | $439.97K | 11,904 | Direct |
| 28 Jul, 2026 | Robert Michael Cloninger | Sr Vp, Deputy General Counsel | Disposed S | 238 | $171.33 | $40.78K | 11,666 | Direct |
| 30 Jun, 2026 | Matthew Stephen Black | Sr Vp Chief Tax Officer | Acquired J | 16 | $158.36 | $2.53K | 43,530 | Direct |
| 30 Jun, 2026 | Domenic Pio | Sr Vp Operations | Acquired J | 95 | $158.36 | $15.04K | 9,188 | Direct |
| 30 Jun, 2026 | Jason Craft | Executive Vice President Coo | Acquired J | 54 | $158.36 | $8.55K | 32,915 | Direct |
| 30 Jun, 2026 | Aaron Bradley | Sr Vp Performance Optimization | Acquired J | 42 | $158.36 | $6.65K | 8,624 | Direct |
| 05 Jun, 2026 | Jason Craft | Executive Vice President Coo | Disposed S | 1,500 | $156.59 | $234.89K | 32,861 | Direct |
| 05 Jun, 2026 | Patrick James Shea | Exec Vp, General Counsel Sec | Disposed S | 7,500 | $156.26 | $1.17Mn | 19,737 | Direct |
| 08 Jun, 2026 | Patrick James Shea | Exec Vp, General Counsel Sec | Disposed G | 15 | $0.00 | $0 | 19,722 | Direct |
| 09 Jun, 2026 | Patrick James Shea | Exec Vp, General Counsel Sec | Disposed G | 100 | $0.00 | $0 | 19,622 | Direct |
| 14 May, 2026 | Iii Robert Nielsen | Sr Vp Operations | Disposed S | 500 | $155.56 | $77.78K | 4,250 | Direct |
| 12 May, 2026 | Iii Robert Nielsen | Sr Vp Operations | Disposed S | 337 | $153.00 | $51.56K | 5,040 | Direct |
| 13 May, 2026 | Iii Robert Nielsen | Sr Vp Operations | Disposed S | 290 | $151.00 | $43.79K | 4,750 | Direct |
| 12 May, 2026 | Ronald J Mittelstaedt | President Ceo | Acquired P | 50,000 | $152.24 | $7.61Mn | 301,017 | Direct |
| 30 Apr, 2026 | Eric Hansen | Senior Vice President And Cio | Disposed S | 6,000 | $164.82 | $988.92K | 13,350 | Direct |
| 27 Apr, 2026 | James Little | Executive Vp Engineering | Disposed S | 2,605 | $163.98 | $427.17K | 34,395 | Direct |