| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 144 | Open Document | Open Filing | 29 Aug 2024 | |||
| 4 | Open Document | Open Filing | 24 Jun 2024 | 20 Jun 2024 | 000-30941 | |
| 4 | Open Document | Open Filing | 20 May 2024 | 17 May 2024 | 000-30941 | |
| 4 | Open Document | Open Filing | 17 May 2024 | 15 May 2024 | 000-30941 | |
| 4 | Open Document | Open Filing | 01 Mar 2024 | 28 Feb 2024 | 000-30941 | |
| 4 | Open Document | Open Filing | 26 Feb 2024 | 23 Feb 2024 | 000-30941 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 07 Aug 2023 | 07 Aug 2023 | 000-30941 |
| 144 | Open Document | Open Filing | 07 Aug 2023 | |||
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 12 Jun 2023 | 09 Jun 2023 | 000-30941 |
| 144 | Open Document | Open Filing | 09 Jun 2023 | |||
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 30 May 2023 | 26 May 2023 | 000-30941 |
| 144 | Open Document | Open Filing | 26 May 2023 | |||
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 19 May 2023 | 19 May 2023 | 000-30941 |
| 144 | Open Document | Open Filing | 19 May 2023 | |||
| 144 | Open Document | Open Filing | 18 May 2023 | |||
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 18 May 2023 | 16 May 2023 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 16 May 2023 | 15 May 2023 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 10 May 2023 | 10 May 2023 | 000-30941 |
| 144 | Open Document | Open Filing | 10 May 2023 | |||
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 01 Mar 2023 | 28 Feb 2023 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 Feb 2023 | 13 Feb 2023 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 28 Nov 2022 | 28 Nov 2022 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 08 Aug 2022 | 08 Aug 2022 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 18 May 2022 | 15 May 2022 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Mar 2022 | 02 Mar 2022 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 Mar 2022 | 28 Feb 2022 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 08 Nov 2021 | 08 Nov 2021 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 31 Aug 2021 | 31 Aug 2021 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 24 May 2021 | 24 May 2021 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 21 May 2021 | 21 May 2021 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 18 May 2021 | 15 May 2021 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Mar 2021 | 28 Feb 2021 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 28 May 2020 | 27 May 2020 | 000-30941 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | 28 May 2020 | 15 May 2020 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 19 May 2020 | 15 May 2020 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 08 May 2020 | 08 May 2020 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 04 Mar 2020 | 04 Mar 2020 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Mar 2020 | 28 Feb 2020 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 21 Aug 2019 | 21 Aug 2019 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 17 May 2019 | 15 May 2019 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 01 Mar 2019 | 28 Feb 2019 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 15 Feb 2019 | 15 Feb 2019 | 000-30941 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | 12 Feb 2019 | 01 Jun 2018 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 01 Jun 2018 | 01 Jun 2018 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 18 May 2018 | 16 May 2018 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 14 Mar 2018 | 14 Mar 2018 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 Mar 2018 | 28 Feb 2018 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 09 Nov 2017 | 07 Nov 2017 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 15 Aug 2017 | 15 Aug 2017 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 18 May 2017 | 18 May 2017 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 17 May 2017 | 16 May 2017 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 17 Feb 2017 | 15 Feb 2017 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 08 Feb 2017 | 06 Feb 2017 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 17 May 2016 | 16 May 2016 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 09 May 2016 | 09 May 2016 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 12 Aug 2015 | 10 Aug 2015 | 000-30941 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 16 Jul 2015 | 15 Jul 2015 | 000-30941 |
| 4 | Open Document | Open Filing | LAWSON FEB 2015 OPTION EXERCISE | 19 Feb 2015 | 17 Feb 2015 | 000-30941 |
| 4 | Open Document | Open Filing | LAWSON NOVEMBER 2014 SALE | 19 Nov 2014 | 18 Nov 2014 | 000-30941 |
| 4 | Open Document | Open Filing | LAWSON 2014 OPTION GRANT | 17 Jul 2014 | 15 Jul 2014 | 000-30941 |
| 4/A | Open Document | Open Filing | LAWSON STOCK PURCHASE MAY 2014 AMEND | 12 May 2014 | 09 May 2014 | 000-30941 |
| 4 | Open Document | Open Filing | LAWSON STOCK PURCHASE MAY 2014 | 12 May 2014 | 09 May 2014 | 000-30941 |
| 3 | Open Document | Open Filing | LAWSON FORM 3 | 14 Nov 2013 | 13 Nov 2013 | 000-30941 |