Gary M. Pfeiffer serves as Executive at DUPONT E I DE NEMOURS & CO, where they oversee executive responsibilities. Since joining the company, Gary M. Pfeiffer has executed 98 insider transactions totaling $7.0M, demonstrating a bearish approach to their equity position. Their most recent transaction on Oct 22, 2025 involved selling 1,482 shares valued at $270.3K.
Gary M. Pfeiffer currently holds 29,431 shares of DUPONT E I DE NEMOURS & CO (DD), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Gary M. Pfeiffer has been a net seller of DD stock. They have purchased $65.6K and sold $7.0M worth of shares.
Gary M. Pfeiffer's most recent insider trade was on Oct 22, 2025, when they sold 1,482 shares at $182.40 per share.
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| $N/A |
| Discretionary |
| May 17, 2023 | DGX | $0 | Award | 1,369 | $N/A | Discretionary |
| May 18, 2022 | DGX | $0 | Award | 1,292 | $N/A | Discretionary |
| May 25, 2021 | DGX | $0 | Award | 1,363 | $N/A | Discretionary |
| May 19, 2020 | DGX | $0 | Award | 1,531 | $N/A | Discretionary |
| May 8, 2020 | INAPQ | $0 | Other | 80,695 | $N/A | Discretionary |
| Jun 6, 2019 | INAP | $0 | Award | 26,726 | $N/A | Discretionary |
| May 14, 2019 | DGX | $0 | Award | 1,722 | $N/A | Discretionary |
| Nov 12, 2018 | INAP | $65.6K | Purchase | 10,000 | $6.56 | Discretionary |
| Sep 30, 2018 | INAP | $0 | Award | 1,819 | $N/A | Discretionary |
| Jun 30, 2018 | INAP | $0 | Award | 1,316 | $N/A | Discretionary |
| Jun 7, 2018 | INAP | $0 | Award | 9,557 | $N/A | Discretionary |
| May 15, 2018 | DGX | $0 | Award | 1,644 | $N/A | Discretionary |
| Apr 5, 2018 | INAP | $731 | Payment | 66 | $11.07 | Discretionary |
| Mar 31, 2018 | INAP | $0 | Award | 802 | $N/A | Discretionary |
| Dec 31, 2017 | INAP | $0 | Award | 557 | $N/A | Discretionary |
| Sep 30, 2017 | INAP | $0 | Award | 2,011 | $N/A | Discretionary |
| Jun 21, 2017 | INAP | $0 | Award | 32,258 | $N/A | Discretionary |
| Jun 21, 2017 | INAP | $26.9K | Payment | 7,817 | $3.44 | Discretionary |
| Jun 21, 2017 | INAP | $0 | Award | 4,277 | $N/A | Discretionary |
| Jun 21, 2017 | INAP | $0 | Award | 32,258 | $N/A | Discretionary |
| May 16, 2017 | DGX | $0 | Award | 1,573 | $N/A | Discretionary |
| Apr 5, 2017 | INAP | $0 | Award | 784 | $N/A | Discretionary |
| Nov 15, 2016 | DGX | $412.4K | Option Exercise | 8,000 | $51.55 | Discretionary |
| Nov 15, 2016 | DGX | $680.1K | Sale | 8,000 | $85.01 | Discretionary |
| Nov 15, 2016 | DGX | $679.5K | Sale | 8,000 | $84.94 | Discretionary |
| Nov 15, 2016 | DGX | $446.1K | Option Exercise | 8,000 | $55.76 | Discretionary |
| Nov 15, 2016 | DGX | $352.4K | Option Exercise | 6,111 | $57.67 | Discretionary |
| Nov 15, 2016 | DGX | $519.9K | Sale | 6,111 | $85.07 | Discretionary |