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Form SC 13D/A DRIL-QUIP INC Filed by: GAMCO INVESTORS, INC. ET AL Mar 12, 2024 04:12PM
Form SC 13D/A DRIL-QUIP INC Filed by: GAMCO INVESTORS, INC. ET AL Oct 30, 2023 04:05PM
Form SC 13D/A DRIL-QUIP INC Filed by: GAMCO INVESTORS, INC. ET AL Oct 11, 2022 04:00PM
Form SC 13D DRIL-QUIP INC Filed by: GAMCO INVESTORS, INC. ET AL Jun 23, 2022 04:26PM