Derek J. Maetzold serves as Executive at ENCYSIVE PHARMACEUTICALS INC, where they oversee executive responsibilities. Since joining the company, Derek J. Maetzold has executed 1319 insider transactions totaling $84.4M, demonstrating a bearish approach to their equity position. Their most recent transaction on Jan 20, 2026 involved selling 4,017 shares valued at $160.7K.
Derek J. Maetzold currently holds 87,715 shares of ENCYSIVE PHARMACEUTICALS INC (ENCY), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Derek J. Maetzold has been a net seller of ENCY stock. They have purchased $0 and sold $84.4M worth of shares.
Derek J. Maetzold's most recent insider trade was on Jan 20, 2026, when they sold 4,017 shares at $40.01 per share.
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| $N/A |
| Discretionary |
| Jan 12, 2026 | CSTL | $0 | Award | 62,219 | $N/A | Discretionary |
| Jan 6, 2026 | CSTL | $53.7K | Sale | 1,339 | $40.10 | Discretionary |
| Jan 5, 2026 | CSTL | $102.0K | Sale | 2,678 | $38.09 | Discretionary |
| Dec 22, 2025 | CSTL | $33.5K | Sale | 830 | $40.35 | Discretionary |
| Dec 17, 2025 | CSTL | $20.4K | Sale | 509 | $40.04 | Discretionary |
| Dec 16, 2025 | CSTL | $494.2K | Sale | 12,821 | $38.55 | Discretionary |
| Dec 15, 2025 | CSTL | $39.8K | Sale | 1,012 | $39.30 | Discretionary |
| Dec 15, 2025 | CSTL | $717.4K | Sale | 18,513 | $38.75 | Discretionary |
| Dec 10, 2025 | CSTL | $0 | Option Exercise | 15,424 | $N/A | Discretionary |
| Dec 10, 2025 | CSTL | $230.8K | Payment | 6,070 | $38.02 | Discretionary |
| Dec 9, 2025 | CSTL | $504.2K | Payment | 13,181 | $38.25 | Discretionary |
| Dec 9, 2025 | CSTL | $0 | Option Exercise | 33,495 | $N/A | Discretionary |
| Dec 4, 2025 | CSTL | $53.6K | Sale | 1,339 | $40.03 | Discretionary |
| Dec 2, 2025 | CSTL | $105.1K | Sale | 2,678 | $39.23 | Discretionary |
| Nov 26, 2025 | CSTL | $170.7K | Sale | 4,258 | $40.09 | Discretionary |
| Nov 25, 2025 | CSTL | $204.9K | Sale | 5,115 | $40.05 | Discretionary |
| Nov 18, 2025 | CSTL | $91.1K | Sale | 2,678 | $34.02 | Discretionary |
| Nov 5, 2025 | CSTL | $85.3K | Sale | 2,678 | $31.85 | Discretionary |
| Nov 4, 2025 | CSTL | $196.4K | Sale | 6,458 | $30.41 | Discretionary |
| Nov 4, 2025 | CSTL | $7.4K | Sale | 237 | $31.12 | Discretionary |
| Oct 20, 2025 | CSTL | $30.0K | Sale | 1,339 | $22.44 | Discretionary |
| Oct 2, 2025 | CSTL | $30.2K | Sale | 1,339 | $22.58 | Discretionary |
| Sep 17, 2025 | CSTL | $29.4K | Sale | 1,339 | $21.97 | Discretionary |
| Sep 2, 2025 | CSTL | $32.0K | Sale | 1,339 | $23.93 | Discretionary |
| Aug 15, 2025 | CSTL | $26.8K | Sale | 1,339 | $20.04 | Discretionary |
| Aug 13, 2025 | CSTL | $838.9K | Sale | 43,019 | $19.50 | Discretionary |
| Aug 8, 2025 | CSTL | $464.1K | Payment | 23,972 | $19.36 | Discretionary |
| Aug 8, 2025 | CSTL | $0 | Option Exercise | 66,991 | $N/A | Discretionary |