William P. Donnelly serves as Executive at METTLER TOLEDO INTERNATIONAL INC/, where they oversee executive responsibilities. Since joining the company, William P. Donnelly has executed 423 insider transactions totaling $144.0M, demonstrating a bearish approach to their equity position. Their most recent transaction on Jan 2, 2026 involved receiving (via award) 2,377 shares valued at $0.
William P. Donnelly currently holds 150,751 shares of METTLER TOLEDO INTERNATIONAL INC/ (MTD), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, William P. Donnelly has been a net seller of MTD stock. They have purchased $1.5M and sold $142.5M worth of shares.
William P. Donnelly's most recent insider trade was on Jan 2, 2026, when they sold 2,377 shares at $0.00 per share.
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| $5.54 |
| Discretionary |
| Sep 29, 2025 | TROW | $12.1K | Award | 117.26 | $103.52 | Discretionary |
| Jul 1, 2025 | QTRX | $28.1K | Award | 4,204 | $6.69 | Discretionary |
| Jun 30, 2025 | TROW | $0 | Award | 670 | $N/A | Discretionary |
| Jun 27, 2025 | TROW | $11.1K | Award | 115.93 | $96.10 | Discretionary |
| Sep 27, 2024 | TROW | $7.3K | Award | 66.29 | $109.51 | Discretionary |
| Jul 1, 2024 | QTRX | $12.5K | Award | 985 | $12.68 | Discretionary |
| May 8, 2024 | TROW | $0 | Award | 1,794 | $N/A | Discretionary |
| Apr 1, 2024 | QTRX | $12.5K | Award | 525 | $23.78 | Discretionary |
| Mar 28, 2024 | TROW | $4.2K | Award | 34.67 | $121.92 | Discretionary |
| Feb 23, 2024 | IR | $0 | Option Exercise | 4,059 | $N/A | Discretionary |
| Jan 2, 2024 | QTRX | $12.5K | Award | 460 | $27.15 | Discretionary |
| Jan 2, 2024 | QTRX | $0 | Award | 2,947 | $N/A | Discretionary |
| Dec 29, 2023 | TROW | $3.9K | Award | 36.05 | $107.69 | Discretionary |
| Dec 29, 2023 | TROW | $20.6K | Award | 191 | $107.69 | Discretionary |
| Nov 2, 2023 | TROW | $0 | Award | 3,182 | $N/A | Discretionary |
| Oct 2, 2023 | QTRX | $6.1K | Award | 228 | $26.71 | Discretionary |
| Sep 8, 2023 | QTRX | $502.0K | Purchase | 20,200 | $24.85 | Discretionary |
| Aug 17, 2023 | QTRX | $0 | Award | 8,238 | $N/A | Discretionary |
| Feb 22, 2023 | IR | $0 | Option Exercise | 4,426 | $N/A | Discretionary |
| Feb 23, 2022 | IR | $0 | Option Exercise | 3,839 | $N/A | Discretionary |
| Mar 6, 2021 | IR | $0 | Option Exercise | 6,297 | $N/A | Discretionary |
| Feb 21, 2020 | GDI | $0 | Option Exercise | 4,621 | $N/A | Discretionary |
| Dec 24, 2018 | MTD | $0 | Gift | 1,560 | $N/A | Discretionary |
| Dec 24, 2018 | MTD | $0 | Gift | 1,560 | $N/A | Discretionary |
| Nov 28, 2018 | MTD | $608.3K | Sale | 1,000 | $608.25 | Discretionary |
| Nov 28, 2018 | MTD | $392.3K | Option Exercise | 2,316 | $169.37 | Discretionary |
| Nov 28, 2018 | MTD | $798.8K | Sale | 1,316 | $607.02 | Discretionary |
| Nov 27, 2018 | MTD | $301.5K | Sale | 500 | $603.05 | Discretionary |