| Activist ownership stake (update) | SC 13D/A | 2021-12-22 | - |
| Insider trade | 4 | 2021-12-08 | 2021-12-06 |
| Activist ownership stake (update) | SC 13D/A | 2021-12-07 | - |
| Quarterly report | 10-Q | 2021-11-09 | 2021-09-30 |
| Quarterly report | 10-Q | 2021-08-03 | 2021-06-30 |
| Passive ownership stake (update) | SC 13G/A | 2021-07-09 | - |
| Insider trade | 4 | 2021-07-06 | 2021-07-01 |
| Insider trade | 4 | 2021-07-06 | 2021-07-01 |
| Insider trade | 4 | 2021-07-06 | 2021-07-01 |
| Insider trade | 4 | 2021-07-06 | 2021-07-01 |
| Insider trade | 4 | 2021-07-06 | 2021-07-01 |
| New insider ownership | 3 | 2021-06-17 | 2021-06-09 |
| Insider trade | 4 | 2021-06-11 | 2021-06-09 |
| Passive ownership stake (update) | SC 13G/A | 2021-06-10 | - |
| Activist ownership stake (update) | SC 13D/A | 2021-06-10 | - |
| Insider trade | 4 | 2021-06-03 | 2021-06-01 |
| Insider trade | 4 | 2021-06-03 | 2021-06-01 |
| Activist ownership stake (update) | SC 13D/A | 2021-06-02 | - |
| SD | - | 2021-05-27 | - |
| Insider trade | 4 | 2021-05-24 | 2021-05-20 |
| Activist ownership stake (update) | SC 13D/A | 2021-05-21 | - |
| New insider ownership | 3 | 2021-05-07 | 2021-04-29 |
| Quarterly report | 10-Q | 2021-05-06 | 2021-03-31 |
| Major company event | 8-K | 2021-04-30 | 2021-04-29 |
| Insider trade | 4 | 2021-03-22 | 2021-03-18 |
| Activist ownership stake (update) | SC 13D/A | 2021-03-19 | - |
| Proxy materials | DEFA14A | 2021-03-17 | - |
| Proxy statement | DEF 14A | 2021-03-17 | 2020-12-31 |
| New insider ownership | 3 | 2021-03-08 | 2021-03-02 |
| Insider trade | 4 | 2021-03-01 | 2021-02-25 |
| Annual report | 10-K | 2021-02-23 | 2020-12-31 |
| Passive ownership stake (update) | SC 13G/A | 2021-02-12 | - |
| Passive ownership stake (update) | SC 13G/A | 2021-02-11 | - |
| Passive ownership stake (update) | SC 13G/A | 2021-02-10 | - |
| New insider ownership | 3 | 2020-12-29 | 2020-12-21 |
| Insider trade | 4 | 2020-12-23 | 2020-12-21 |
| Activist ownership stake (update) | SC 13D/A | 2020-12-22 | - |
| Insider trade | 4 | 2020-12-09 | 2020-12-07 |
| Insider trade | 4 | 2020-12-09 | 2020-12-07 |
| Activist ownership stake (update) | SC 13D/A | 2020-12-08 | - |
| Insider trade | 4 | 2020-12-02 | 2020-11-30 |
| Insider trade | 4 | 2020-12-02 | 2020-11-30 |
| Activist ownership stake (update) | SC 13D/A | 2020-12-01 | - |
| Quarterly report | 10-Q | 2020-11-05 | 2020-09-30 |
| Quarterly report | 10-Q | 2020-08-06 | 2020-06-30 |
| Insider trade | 4 | 2020-07-06 | 2020-07-01 |
| Insider trade | 4 | 2020-07-06 | 2020-07-01 |
| Insider trade | 4 | 2020-07-06 | 2020-07-01 |
| Insider trade | 4 | 2020-07-06 | 2020-07-01 |
| Insider trade | 4 | 2020-07-06 | 2020-07-01 |
