| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Aug 17, 2022 | Aug 17, 2022 | 001-33503 |
| 4 | Open Document | Open Filing | LIGON 2021 GRANT | Dec 16, 2021 | Dec 15, 2021 | 001-33503 |
| 4 | Open Document | Open Filing | LIGON 2020 DIRECTOR GRANT | Dec 30, 2020 | Dec 29, 2020 | 001-33503 |
| 4 | Open Document | Open Filing | LIGON 2019 DIRECTOR GRANT | Dec 17, 2019 | Dec 16, 2019 | 001-33503 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 21, 2018 | Dec 21, 2018 | 001-33503 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 16, 2018 | Nov 15, 2017 | 001-33503 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 18, 2017 | Dec 18, 2017 | 001-33503 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 16, 2016 | Dec 15, 2016 | 001-33503 |
| 4 | Open Document | Open Filing | FORM 4 | May 23, 2016 | May 19, 2016 | 001-33503 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 8, 2016 | Jan 6, 2016 | 001-34635 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 18, 2015 | Dec 17, 2015 | 001-33503 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Oct 14, 2015 | Oct 12, 2015 | 001-34635 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | Oct 14, 2015 | Jul 2, 2015 | 001-34635 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jul 6, 2015 | Jul 2, 2015 | 001-34635 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 25, 2015 | May 18, 2015 | 001-34635 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 14, 2015 | May 5, 2015 | 001-34635 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Apr 6, 2015 | Apr 2, 2015 | 001-34635 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | Apr 6, 2015 | Jan 6, 2015 | 001-34635 |
| 4 | Open Document | Open Filing | Feb 17, 2015 | Feb 13, 2015 | 001-35097 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 21, 2015 | Jan 19, 2015 | 001-34094 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 8, 2015 | Jan 6, 2015 | 001-34635 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 16, 2014 | Dec 12, 2014 | 001-31759 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 15, 2014 | Dec 12, 2014 | 001-33503 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | Oct 7, 2014 | Oct 1, 2014 | 001-34635 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Oct 3, 2014 | Sep 1, 2014 | 001-34635 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Aug 28, 2014 | Aug 26, 2014 | 001-31759 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Aug 28, 2014 | Aug 26, 2014 | 001-31759 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jul 7, 2014 | Jul 2, 2014 | 001-34635 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 2, 2014 | May 29, 2014 | 001-31759 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 22, 2014 | May 21, 2014 | 001-34635 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Apr 3, 2014 | Apr 1, 2014 | 001-34635 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 13, 2014 | Feb 13, 2014 | 001-31759 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 13, 2014 | Feb 12, 2014 | 001-31759 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 12, 2014 | Feb 11, 2014 | 001-31759 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 12, 2014 | Feb 10, 2014 | 001-31759 |
| 4 | Open Document | Open Filing | Jan 14, 2014 | Jan 10, 2014 | 001-35097 | |
| 4 | Open Document | Open Filing | JANUARY 2014 STOCK GRANT | Jan 14, 2014 | Jan 13, 2014 | 001-34094 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 6, 2014 | Jan 2, 2014 | 001-34635 |