| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 17 Aug 2022 | 17 Aug 2022 | 001-33503 |
| 4 | Open Document | Open Filing | LIGON 2021 GRANT | 16 Dec 2021 | 15 Dec 2021 | 001-33503 |
| 4 | Open Document | Open Filing | LIGON 2020 DIRECTOR GRANT | 30 Dec 2020 | 29 Dec 2020 | 001-33503 |
| 4 | Open Document | Open Filing | LIGON 2019 DIRECTOR GRANT | 17 Dec 2019 | 16 Dec 2019 | 001-33503 |
| 4 | Open Document | Open Filing | FORM 4 | 21 Dec 2018 | 21 Dec 2018 | 001-33503 |
| 4 | Open Document | Open Filing | FORM 4 | 16 Feb 2018 | 15 Nov 2017 | 001-33503 |
| 4 | Open Document | Open Filing | FORM 4 | 18 Dec 2017 | 18 Dec 2017 | 001-33503 |
| 4 | Open Document | Open Filing | FORM 4 | 16 Dec 2016 | 15 Dec 2016 | 001-33503 |
| 4 | Open Document | Open Filing | FORM 4 | 23 May 2016 | 19 May 2016 | 001-33503 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 08 Jan 2016 | 06 Jan 2016 | 001-34635 |
| 4 | Open Document | Open Filing | FORM 4 | 18 Dec 2015 | 17 Dec 2015 | 001-33503 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 14 Oct 2015 | 12 Oct 2015 | 001-34635 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | 14 Oct 2015 | 02 Jul 2015 | 001-34635 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Jul 2015 | 02 Jul 2015 | 001-34635 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 25 Jun 2015 | 18 May 2015 | 001-34635 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 14 May 2015 | 05 May 2015 | 001-34635 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Apr 2015 | 02 Apr 2015 | 001-34635 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | 06 Apr 2015 | 06 Jan 2015 | 001-34635 |
| 4 | Open Document | Open Filing | 17 Feb 2015 | 13 Feb 2015 | 001-35097 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 21 Jan 2015 | 19 Jan 2015 | 001-34094 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 08 Jan 2015 | 06 Jan 2015 | 001-34635 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 16 Dec 2014 | 12 Dec 2014 | 001-31759 |
| 4 | Open Document | Open Filing | FORM 4 | 15 Dec 2014 | 12 Dec 2014 | 001-33503 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | 07 Oct 2014 | 01 Oct 2014 | 001-34635 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Oct 2014 | 01 Sep 2014 | 001-34635 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 28 Aug 2014 | 26 Aug 2014 | 001-31759 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 28 Aug 2014 | 26 Aug 2014 | 001-31759 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 07 Jul 2014 | 02 Jul 2014 | 001-34635 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 Jun 2014 | 29 May 2014 | 001-31759 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 22 May 2014 | 21 May 2014 | 001-34635 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Apr 2014 | 01 Apr 2014 | 001-34635 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 Feb 2014 | 13 Feb 2014 | 001-31759 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 Feb 2014 | 12 Feb 2014 | 001-31759 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 12 Feb 2014 | 11 Feb 2014 | 001-31759 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 12 Feb 2014 | 10 Feb 2014 | 001-31759 |
| 4 | Open Document | Open Filing | 14 Jan 2014 | 10 Jan 2014 | 001-35097 | |
| 4 | Open Document | Open Filing | JANUARY 2014 STOCK GRANT | 14 Jan 2014 | 13 Jan 2014 | 001-34094 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Jan 2014 | 02 Jan 2014 | 001-34635 |