Henry R. Slack serves as Executive at ENGELHARD CORP, where they oversee executive responsibilities. Since joining the company, Henry R. Slack has executed 54 insider transactions totaling $5.2M, demonstrating a bearish approach to their equity position. Their most recent transaction on Aug 26, 2025 involved selling 3,548 shares valued at $121.7K.
Henry R. Slack currently holds 35,188 shares of ENGELHARD CORP (EC), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Henry R. Slack has been a net seller of EC stock. They have purchased $193.5K and sold $5.0M worth of shares.
Henry R. Slack's most recent insider trade was on Aug 26, 2025, when they sold 3,548 shares at $34.29 per share.
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| $34.56 |
| Discretionary |
| Aug 15, 2025 | ALCO | $813.8K | Sale | 24,789 | $32.83 | Discretionary |
| Oct 2, 2023 | ALCO | $0 | Award | 755 | $N/A | Discretionary |
| Jul 3, 2023 | ALCO | $0 | Award | 731 | $N/A | Discretionary |
| Apr 3, 2023 | ALCO | $0 | Award | 778 | $N/A | Discretionary |
| Jan 3, 2023 | ALCO | $18.8K | Award | 787 | $23.83 | Discretionary |
| Oct 3, 2022 | ALCO | $18.8K | Award | 637 | $29.48 | Discretionary |
| Jul 1, 2022 | ALCO | $18.8K | Award | 526 | $35.69 | Discretionary |
| Apr 1, 2022 | ALCO | $18.8K | Award | 494 | $37.98 | Discretionary |
| Jan 3, 2022 | ALCO | $18.8K | Award | 498 | $37.69 | Discretionary |
| Oct 1, 2021 | ALCO | $18.8K | Award | 546 | $34.37 | Discretionary |
| Sep 22, 2021 | GRA | $0 | Disposition | 5,495 | $N/A | Discretionary |
| Jul 1, 2021 | ALCO | $18.8K | Award | 535 | $35.05 | Discretionary |
| May 11, 2021 | GRA | $0 | Award | 1,683 | $N/A | Discretionary |
| Apr 1, 2021 | ALCO | $23.5K | Award | 795 | $29.51 | Discretionary |
| Jan 4, 2021 | ALCO | $23.4K | Award | 766 | $30.60 | Discretionary |
| Oct 1, 2020 | ALCO | $23.5K | Award | 819 | $28.65 | Discretionary |
| Jul 1, 2020 | ALCO | $23.4K | Award | 741 | $31.64 | Discretionary |
| May 12, 2020 | GRA | $0 | Award | 2,280 | $N/A | Discretionary |
| Apr 1, 2020 | ALCO | $23.4K | Award | 862 | $27.20 | Discretionary |
| Jan 2, 2020 | ALCO | $23.4K | Award | 651 | $36.01 | Discretionary |
| Nov 12, 2019 | ALCO | $0 | Other | 128,571 | $N/A | Discretionary |
| Oct 2, 2019 | ALCO | $28.1K | Award | 828 | $33.97 | Discretionary |
| Jul 2, 2019 | ALCO | $28.1K | Award | 944 | $29.81 | Discretionary |
| May 8, 2019 | GRA | $0 | Award | 1,532 | $N/A | Discretionary |
| Apr 2, 2019 | ALCO | $46.9K | Award | 1,689 | $27.76 | Discretionary |
| Jan 15, 2019 | ALCO | $46.9K | Disposition | 1,576 | $29.75 | Discretionary |
| Oct 4, 2018 | ALCO | $46.9K | Award | 1,392 | $33.67 | Discretionary |
| Jul 3, 2018 | ALCO | $46.9K | Award | 1,488 | $31.50 | Discretionary |