Bruce Booth serves as Executive at ZAFGEN, INC., where they oversee executive responsibilities. Since joining the company, Bruce Booth has executed 161 insider transactions totaling $177.9M, demonstrating a bearish approach to their equity position. Their most recent transaction on Dec 12, 2025 involved selling 108 shares valued at $9.8K.
Bruce Booth currently holds 685,393 shares of ZAFGEN, INC. (ZFGN), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Bruce Booth has been a net seller of ZFGN stock. They have purchased $36.6M and sold $141.3M worth of shares.
Bruce Booth's most recent insider trade was on Dec 12, 2025, when they sold 108 shares at $91.04 per share.
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| $91.04 |
| Discretionary |
| Dec 11, 2025 | KYMR | $89.0K | Sale | 976 | $91.23 | Discretionary |
| Dec 11, 2025 | KYMR | $467.6K | Sale | 5,125 | $91.23 | Discretionary |
| Dec 10, 2025 | KYMR | $950.5K | Sale | 10,545 | $90.14 | Discretionary |
| Dec 10, 2025 | KYMR | $837.2K | Sale | 9,060 | $92.41 | Discretionary |
| Dec 10, 2025 | KYMR | $180.4K | Sale | 2,001 | $90.14 | Discretionary |
| Dec 10, 2025 | KYMR | $302.6K | Sale | 3,391 | $89.25 | Discretionary |
| Dec 10, 2025 | KYMR | $530.0K | Sale | 5,979 | $88.64 | Discretionary |
| Dec 10, 2025 | KYMR | $8.0M | Sale | 85,862 | $93.20 | Discretionary |
| Dec 10, 2025 | KYMR | $4.4M | Sale | 47,349 | $92.41 | Discretionary |
| Dec 10, 2025 | KYMR | $1.5M | Sale | 16,338 | $93.20 | Discretionary |
| Dec 10, 2025 | KYMR | $1.6M | Sale | 17,825 | $89.25 | Discretionary |
| Dec 10, 2025 | KYMR | $2.8M | Sale | 31,459 | $88.64 | Discretionary |
| Oct 21, 2025 | SION | $730.3K | Sale | 22,339 | $32.69 | Discretionary |
| Oct 21, 2025 | SION | $153.3K | Sale | 4,688 | $32.69 | Discretionary |
| Oct 21, 2025 | SION | $675.6K | Sale | 19,948 | $33.87 | Discretionary |
| Oct 21, 2025 | SION | $141.8K | Sale | 4,187 | $33.87 | Discretionary |
| Oct 21, 2025 | SION | $201.2K | Sale | 5,763 | $34.91 | Discretionary |
| Oct 21, 2025 | SION | $42.2K | Sale | 1,210 | $34.91 | Discretionary |
| Oct 21, 2025 | SION | $903.9K | Sale | 25,327 | $35.69 | Discretionary |
| Oct 21, 2025 | SION | $189.7K | Sale | 5,316 | $35.69 | Discretionary |
| Oct 21, 2025 | SION | $619 | Sale | 17 | $36.42 | Discretionary |
| Oct 21, 2025 | SION | $3.0K | Sale | 83 | $36.42 | Discretionary |
| Oct 20, 2025 | SION | $651.2K | Sale | 20,485 | $31.79 | Discretionary |
| Oct 20, 2025 | SION | $136.7K | Sale | 4,300 | $31.79 | Discretionary |
| Oct 20, 2025 | SION | $833.7K | Sale | 25,788 | $32.33 | Discretionary |
| Oct 20, 2025 | SION | $175.0K | Sale | 5,412 | $32.33 | Discretionary |
| Oct 17, 2025 | SION | $8.3K | Sale | 248 | $33.47 | Discretionary |
| Oct 17, 2025 | SION | $147.3K | Sale | 4,503 | $32.71 | Discretionary |