U.S. SILICA HOLDINGS, INC. On January 20, 2023, Mr. Michael Winkler, Executive Vice President and Chief Operating Officer of U.S. Silica Holdings, Inc., notified the Company of his plan to retire from the Company. Mr. Winkler is expected to remain in his position until mid to late 2023 to assist with the transition of his responsibilities.
U.S. Silica Holdings, Inc. Announces the Retirement of Michael Winkler as Executive Vice President and Chief Operating Officer
January 20, 2023 at 05:21 pm EST
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