0001209191-21-009109.txt : 20210209 0001209191-21-009109.hdr.sgml : 20210209 20210209210042 ACCESSION NUMBER: 0001209191-21-009109 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20210206 FILED AS OF DATE: 20210209 DATE AS OF CHANGE: 20210209 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: WINKLER MICHAEL L CENTRAL INDEX KEY: 0001529850 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-35416 FILM NUMBER: 21608812 MAIL ADDRESS: STREET 1: 8490 PROGRESS DRIVE STREET 2: SUITE 300 CITY: FREDERICK STATE: MD ZIP: 21701 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: U.S. SILICA HOLDINGS, INC. CENTRAL INDEX KEY: 0001524741 STANDARD INDUSTRIAL CLASSIFICATION: MINING, QUARRYING OF NONMETALLIC MINERALS (NO FUELS) [1400] IRS NUMBER: 263718801 STATE OF INCORPORATION: TX FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 24275 KATY FREEWAY STREET 2: SUITE 600 CITY: KATY STATE: TX ZIP: 77494 BUSINESS PHONE: (281) 258-2170 MAIL ADDRESS: STREET 1: 24275 KATY FREEWAY STREET 2: SUITE 600 CITY: KATY STATE: TX ZIP: 77494 FORMER COMPANY: FORMER CONFORMED NAME: GGC USS HOLDINGS, INC. DATE OF NAME CHANGE: 20110630 4 1 doc4.xml FORM 4 SUBMISSION X0306 4 2021-02-06 0 0001524741 U.S. SILICA HOLDINGS, INC. SLCA 0001529850 WINKLER MICHAEL L C/O US SILICA HOLDINGS INC. 24275 KATY FREEWAY SUITE 600 KATY TX 77494 0 1 0 0 EVP & Chief Operating Officer Common Stock 2021-02-06 4 F 0 9097 9.04 D 265658 D Represents tax withholding on vested restricted stock units. Includes (i) 30,210 restricted stock units granted on February 12, 2019 which will vest in equal installments on February 12, 2021 and 2022 and (ii) 69,893 restricted stock units granted on February 6, 2020 which will vest in equal installments on February 6, 2022 and 2023. /s/ Matthew Rinegar, as Attorney-In-Fact 2021-02-09