| Filed | Form | Filer | Stake | Shares | |
|---|---|---|---|---|---|
| 2021-03-18 | SC | GAMCO INVESTORS, INC. ET AL | — | — | view → |
| 2020-08-14 | SC | Raging Capital Management, LLC | — | — | view → |
| 2019-01-24 | SC | GAMCO INVESTORS, INC. ET AL | — | — | view → |
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