Michelle Leroux Williams serves as Executive at OSIRIS THERAPEUTICS, INC., where they oversee executive responsibilities. Since joining the company, Michelle Leroux Williams has executed 22 insider transactions totaling $1.3M, demonstrating a bearish approach to their equity position. Their most recent transaction on Dec 10, 2025 involved exercising options for 12,500 shares valued at $0.
Michelle Leroux Williams currently holds 105,885 shares of OSIRIS THERAPEUTICS, INC. (OSIR), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Michelle Leroux Williams has been a net seller of OSIR stock. They have purchased $208 and sold $1.3M worth of shares.
Michelle Leroux Williams's most recent insider trade was on Dec 10, 2025, when they sold 12,500 shares at $0.00 per share.
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| $0.70 |
| Discretionary |
| Sep 10, 2025 | ELUT | $0 | Option Exercise | 12,500 | $N/A | Discretionary |
| Sep 10, 2025 | ELUT | $5.4K | Payment | 3,950 | $1.36 | Discretionary |
| Sep 10, 2024 | ELUT | $16.4K | Payment | 3,951 | $4.14 | Discretionary |
| Sep 10, 2024 | ELUT | $0 | Option Exercise | 12,500 | $N/A | Discretionary |
| Aug 12, 2024 | ELUT | $44.9K | Payment | 15,800 | $2.84 | Discretionary |
| Aug 12, 2024 | ELUT | $0 | Option Exercise | 50,000 | $N/A | Discretionary |
| Jun 10, 2024 | ELUT | $27.4K | Payment | 7,900 | $3.47 | Discretionary |
| Jun 10, 2024 | ELUT | $0 | Option Exercise | 25,000 | $N/A | Discretionary |
| Mar 14, 2014 | OSIR | $166.0K | Sale | 11,934 | $13.91 | Discretionary |
| Mar 14, 2014 | OSIR | $143.3K | Option Exercise | 11,934 | $12.01 | Discretionary |
| Mar 13, 2014 | OSIR | $133.7K | Option Exercise | 18,750 | $7.13 | Discretionary |
| Mar 13, 2014 | OSIR | $707.0K | Sale | 50,000 | $14.14 | Discretionary |
| Mar 13, 2014 | OSIR | $31.8K | Option Exercise | 6,250 | $5.08 | Discretionary |
| Mar 13, 2014 | OSIR | $193.5K | Option Exercise | 25,000 | $7.74 | Discretionary |
| Nov 15, 2013 | OSIR | $3.0K | Option Exercise | 7,500 | $0.40 | Discretionary |
| Nov 15, 2013 | OSIR | $72.7K | Option Exercise | 11,250 | $6.46 | Discretionary |
| Nov 15, 2013 | OSIR | $2.3K | Option Exercise | 5,750 | $0.40 | Discretionary |
| Nov 15, 2013 | OSIR | $379.8K | Sale | 24,500 | $15.50 | Discretionary |
| Dec 11, 2012 | OSIR | $208 | Purchase | 520 | $0.40 | Discretionary |
| Dec 11, 2012 | OSIR | $4.8K | Sale | 520 | $9.31 | Discretionary |