| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 09 Dec 2024 | 05 Dec 2024 | 001-41250 | |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 20 Feb 2024 | 07 Feb 2024 | 001-41250 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 15 Jun 2023 | 14 Jun 2023 | 000-27598 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 16 Jun 2022 | 15 Jun 2022 | 000-27598 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 19 May 2022 | 17 May 2022 | 001-38943 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 21 Jun 2021 | 16 Jun 2021 | 000-27598 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 18 May 2021 | 14 May 2021 | 001-38943 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 18 Aug 2020 | 14 Aug 2020 | 001-38943 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 26 Jun 2020 | 24 Jun 2020 | 000-27598 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 19 May 2020 | 15 May 2020 | 001-38943 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 11 Feb 2020 | 07 Feb 2020 | 001-38943 |
| 4 | Open Document | Open Filing | FORM 4 | 02 Aug 2019 | 01 Aug 2019 | 000-33001 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 25 Jul 2019 | 23 Jul 2019 | 000-27598 |
| 4 | Open Document | Open Filing | FORM 4 | 02 Jul 2019 | 01 Jul 2019 | 000-33001 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 24 Jun 2019 | 24 Jun 2019 | 001-38943 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 19 Jun 2019 | 19 Jun 2019 | 001-38943 |
| 4 | Open Document | Open Filing | FORM 4 | 13 Jun 2019 | 11 Jun 2019 | 000-33001 |
| 4 | Open Document | Open Filing | FORM 4 | 04 Jun 2019 | 31 May 2019 | 000-33001 |
| 4 | Open Document | Open Filing | FORM 4 | 13 May 2019 | 10 May 2019 | 000-33001 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 04 Apr 2019 | 02 Apr 2019 | 000-27598 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 04 Apr 2019 | 02 Apr 2019 | 000-27598 |
| 4 | Open Document | Open Filing | FORM 4 | 03 Dec 2018 | 26 Oct 2018 | 000-33001 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Aug 2018 | 02 Aug 2018 | 000-33001 |
| 4 | Open Document | Open Filing | FORM 4 | 26 Jun 2018 | 22 Jun 2018 | 000-33001 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Mar 2018 | 02 Mar 2018 | 000-33001 |
| 4 | Open Document | Open Filing | FORM 4 | 23 Jun 2017 | 21 Jun 2017 | 000-33001 |
| 4 | Open Document | Open Filing | FORM 4 | 03 Jun 2016 | 02 Jun 2016 | 000-33001 |
| 4 | Open Document | Open Filing | FORM 4 | 18 Feb 2016 | 16 Feb 2016 | 000-33001 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 26 Jan 2016 | 22 Jan 2016 | 001-36536 |
| 4 | Open Document | Open Filing | FORM 4 | 12 Jun 2015 | 04 Jun 2015 | 000-33001 |
| 4 | Open Document | Open Filing | FORM 4 | 29 May 2015 | 27 May 2015 | 000-33001 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 10 Mar 2015 | 06 Mar 2015 | 001-36536 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 23 Jul 2014 | 22 Jul 2014 | 001-36536 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 16 Jul 2014 | 16 Jul 2014 | 001-36536 |
| 4 | Open Document | Open Filing | LUDLUM ANNUAL GRANT AND AWARD | 09 Jun 2014 | 05 Jun 2014 | 000-33001 |
| 4 | Open Document | Open Filing | LUDLUM MAY 2014 OPTION SALE | 03 Jun 2014 | 30 May 2014 | 000-33001 |