| Date | Filer | Title | Filing | Type | Shares Traded | Price | Total Held |
|---|---|---|---|---|---|---|---|
| June 20, 2014 | Director | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 40,000 | -- | 109,162 | |
| February 19, 2019 | Director | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 12,000 | -- | 109,689 | |
| February 2, 2016 | Director | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 25,000 | -- | 109,998 | |
| March 17, 2015 | Director | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 25,000 | -- | 110,551 | |
| February 19, 2010 | Director | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 25,000 | $2.94 | 110,676 | |
| March 15, 2024 | Chief Scientific Officer | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 25,000 | -- | 110,688 | |
| February 12, 2016 | Director, CEO | Form 4 | Open market or private purchase of non-derivative or derivative security | 6,500 | $1.12 | 111,021 | |
| June 15, 2020 | Director | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 4,000 | -- | 111,357 | |
| June 15, 2020 | Director | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 50,000 | -- | 111,357 | |
| June 15, 2020 | Director | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 4,000 | -- | 111,357 | |
| June 15, 2020 | Director | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 50,000 | -- | 111,357 | |
| January 19, 2009 | Director | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 11,667 | $2.72 | 111,579 | |
| March 17, 2015 | Chief Scientific Officer | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 37,500 | -- | 112,500 | |
| February 2, 2016 | Director | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 25,000 | -- | 113,331 | |
| January 19, 2009 | Chief Financial Officer | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 6,667 | $2.72 | 113,334 | |
| May 18, 2007 | Director | Form 4 | Open market or private purchase of non-derivative or derivative security | 10,000 | $4.84 | 113,362 | |
| November 17, 2008 | Director | Form 4 | Open market or private purchase of non-derivative or derivative security | 100 | $2.60 | 113,462 | |
| January 19, 2010 | Chief Executive Officer | Form 4 | Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | 16,667 | -- | 114,329 | |
| May 14, 2019 | Controller | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 7,500 | -- | 114,557 | |
| February 16, 2016 | Director, CEO | Form 4 | Open market or private purchase of non-derivative or derivative security | 4,500 | $1.20 | 115,521 | |
| September 6, 2016 | Controller | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 13,816 | -- | 115,573 | |
| May 14, 2019 | Director | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 10,000 | -- | 115,880 | |
| May 14, 2019 | Director | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 10,000 | -- | 116,118 | |
| May 14, 2019 | Director | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 10,000 | -- | 116,118 | |
| September 6, 2016 | Director | Form 4 | Grant, award or other acquisition pursuant to Rule 16b-3(d) | 7,332 | -- | 117,330 |
For recent transactions, including derivative transactions, see our Section 16 SEC filings page.
* Represents the number of non-derivative securities directly held. (I) Indicates that some (or all) of these shares are held indirectly.
