J. Matthew Singleton serves as Executive at CUBIST PHARMACEUTICALS INC, where they oversee executive responsibilities. Since joining the company, J. Matthew Singleton has executed 37 insider transactions totaling $5.7M, demonstrating a bearish approach to their equity position. Their most recent transaction on Jan 2, 2026 involved receiving (via award) 20,400 shares valued at $0.
J. Matthew Singleton currently holds 20,400 shares of CUBIST PHARMACEUTICALS INC (CBST), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, J. Matthew Singleton has been a net seller of CBST stock. They have purchased $93.3K and sold $5.6M worth of shares.
J. Matthew Singleton's most recent insider trade was on Jan 2, 2026, when they sold 20,400 shares at $0.00 per share.
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| $N/A |
| Discretionary |
| Sep 20, 2024 | VKTX | $715.9K | Sale | 10,300 | $69.50 | Planned |
| Sep 20, 2024 | VKTX | $12.3K | Option Exercise | 10,300 | $1.19 | Planned |
| Aug 21, 2024 | VKTX | $397.4K | Sale | 5,700 | $69.72 | Planned |
| Aug 21, 2024 | VKTX | $6.8K | Option Exercise | 5,700 | $1.19 | Planned |
| Aug 19, 2024 | VKTX | $150.0K | Sale | 2,500 | $60.01 | Planned |
| Aug 19, 2024 | VKTX | $186.3K | Sale | 3,047 | $61.13 | Planned |
| Aug 19, 2024 | VKTX | $278.9K | Sale | 4,509 | $61.86 | Planned |
| Aug 19, 2024 | VKTX | $129.8K | Sale | 2,055 | $63.15 | Planned |
| Aug 19, 2024 | VKTX | $153.1K | Sale | 2,388 | $64.10 | Planned |
| Aug 19, 2024 | VKTX | $97.4K | Sale | 1,501 | $64.88 | Planned |
| Aug 19, 2024 | VKTX | $53.3K | Option Exercise | 16,000 | $3.33 | Planned |
| Aug 14, 2024 | VKTX | $9.3K | Sale | 160 | $58.37 | Planned |
| Aug 14, 2024 | VKTX | $166.3K | Option Exercise | 20,786 | $8.00 | Planned |
| Aug 14, 2024 | VKTX | $1.2M | Sale | 20,626 | $57.52 | Planned |
| May 31, 2018 | VKTX | $93.3K | Purchase | 9,500 | $9.82 | Discretionary |
| Jun 6, 2013 | CBST | $0 | Option Exercise | 1,347 | $N/A | Discretionary |
| May 22, 2013 | CBST | $95.6K | Option Exercise | 10,000 | $9.56 | Discretionary |
| May 22, 2013 | CBST | $397.4K | Option Exercise | 17,500 | $22.71 | Discretionary |
| May 22, 2013 | CBST | $1.5M | Sale | 27,500 | $55.48 | Discretionary |
| Aug 24, 2012 | CBST | $113.8K | Sale | 2,500 | $45.52 | Discretionary |
| Aug 24, 2012 | CBST | $25.2K | Option Exercise | 2,500 | $10.09 | Discretionary |
| Mar 9, 2012 | CBST | $0 | Option Exercise | 10,000 | $N/A | Discretionary |
| Mar 9, 2012 | CBST | $430.6K | Sale | 10,000 | $43.06 | Discretionary |
| Feb 3, 2012 | CBST | $84.6K | Sale | 2,000 | $42.28 | Discretionary |
| Feb 3, 2012 | CBST | $23.8K | Option Exercise | 2,000 | $11.89 | Discretionary |
| Jun 2, 2011 | CBST | $0 | Award | 578 | $N/A | Discretionary |
| Jun 10, 2010 | CBST | $0 | Award | 1,047 | $N/A | Discretionary |
| Jan 14, 2009 | CBST | $45.5K | Sale | 2,000 | $22.76 | Discretionary |