| Filed | Form | Filer | Stake | Shares | |
|---|---|---|---|---|---|
| 2024-02-20 | SC | 2006 Irrevocable Trust of Laura W. Van Loan for the Benefit of Mary M. Crawford | — | — | view → |
| 2022-11-28 | SC | Louis Berkman Investment CO | — | — | view → |
| 2022-03-01 | SC | Louis Berkman Investment CO | — | — | view → |
| 2022-02-11 | SC | Ancora Advisors, LLC | — | — | view → |
| 2021-07-01 | SC | 2006 Irrevocable Trust of Laura W. Van Loan for the Benefit of Mary M. Crawford | — | — | view → |
| 2021-04-09 | SC | 2006 Irrevocable Trust of Laura W. Van Loan for the Benefit of Mary M. Crawford | — | — | view → |
| 2021-03-19 | SC | GAMCO INVESTORS, INC. ET AL | — | — | view → |
| 2021-03-16 | SC | GAMCO INVESTORS, INC. ET AL | — | — | view → |
| 2021-02-01 | SC | 2006 Irrevocable Trust of Laura W. Van Loan for the Benefit of Mary M. Crawford | — | — | view → |
| 2020-10-01 | SC | 2006 Irrevocable Trust of Laura W. Van Loan for the Benefit of Mary M. Crawford | — | — | view → |
| 2020-08-25 | SC | GAMCO INVESTORS, INC. ET AL | — | — | view → |
| 2020-08-17 | SC | GAMCO INVESTORS, INC. ET AL | — | — | view → |
| 2020-08-12 | SC | Altor Holdings Ltd | — | — | view → |
| 2020-06-05 | SC | GAMCO INVESTORS, INC. ET AL | — | — | view → |
| 2020-04-28 | SC | GAMCO INVESTORS, INC. ET AL | — | — | view → |
| 2020-04-15 | SC | GAMCO INVESTORS, INC. ET AL | — | — | view → |
| 2019-08-29 | SC | GAMCO INVESTORS, INC. ET AL | — | — | view → |
| 2018-04-10 | SC | Louis Berkman Investment CO | — | — | view → |
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