Jonathan I. Lieber serves as Executive at Altus Pharmaceuticals Inc., where they oversee executive responsibilities. Since joining the company, Jonathan I. Lieber has executed 26 insider transactions totaling $394.7K, demonstrating a bearish approach to their equity position. Their most recent transaction on Feb 23, 2026 involved selling 789 shares valued at $4.0K.
Jonathan I. Lieber currently holds 4,115 shares of Altus Pharmaceuticals Inc. (ALTU), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Jonathan I. Lieber has been a net seller of ALTU stock. They have purchased $42.9K and sold $351.8K worth of shares.
Jonathan I. Lieber's most recent insider trade was on Feb 23, 2026, when they sold 789 shares at $5.06 per share.
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| $N/A |
| Discretionary |
| Mar 14, 2023 | RLYB | $26.1K | Purchase | 5,000 | $5.21 | Discretionary |
| Jan 3, 2023 | SLRX | $0 | Award | 1,440 | $N/A | Discretionary |
| Jun 7, 2022 | SLRX | $7.1K | Purchase | 37,500 | $0.19 | Discretionary |
| Dec 2, 2016 | HSGX | $9.8K | Purchase | 5,000 | $1.95 | Discretionary |
| Dec 17, 2007 | ALTU | $7.1K | Option Exercise | 1,800 | $3.92 | Discretionary |
| Dec 17, 2007 | ALTU | $18.1K | Sale | 1,800 | $10.03 | Discretionary |
| Nov 15, 2007 | ALTU | $7.1K | Option Exercise | 1,800 | $3.92 | Discretionary |
| Nov 15, 2007 | ALTU | $20.4K | Sale | 1,800 | $11.35 | Discretionary |
| Oct 15, 2007 | ALTU | $20.6K | Sale | 1,800 | $11.46 | Discretionary |
| Oct 15, 2007 | ALTU | $7.1K | Option Exercise | 1,800 | $3.92 | Discretionary |
| Sep 17, 2007 | ALTU | $7.1K | Option Exercise | 1,800 | $3.92 | Discretionary |
| Sep 17, 2007 | ALTU | $18.5K | Sale | 1,800 | $10.27 | Discretionary |
| Aug 15, 2007 | ALTU | $35.3K | Option Exercise | 9,000 | $3.92 | Discretionary |
| Aug 15, 2007 | ALTU | $93.8K | Sale | 9,000 | $10.42 | Discretionary |
| Mar 15, 2007 | ALTU | $25.6K | Sale | 1,800 | $14.23 | Discretionary |
| Mar 15, 2007 | ALTU | $7.1K | Option Exercise | 1,800 | $3.92 | Discretionary |
| Feb 15, 2007 | ALTU | $7.8K | Option Exercise | 2,000 | $3.92 | Discretionary |
| Feb 15, 2007 | ALTU | $35.6K | Sale | 2,000 | $17.81 | Discretionary |
| Jan 16, 2007 | ALTU | $7.8K | Option Exercise | 2,000 | $3.92 | Discretionary |
| Jan 16, 2007 | ALTU | $38.5K | Sale | 2,000 | $19.24 | Discretionary |
| Dec 15, 2006 | ALTU | $39.5K | Sale | 2,000 | $19.74 | Discretionary |
| Dec 15, 2006 | ALTU | $7.8K | Option Exercise | 2,000 | $3.92 | Discretionary |
| Nov 15, 2006 | ALTU | $7.8K | Option Exercise | 2,000 | $3.92 | Discretionary |
| Nov 15, 2006 | ALTU | $37.2K | Sale | 2,000 | $18.61 | Discretionary |