0001213900-23-014129.txt : 20230224 0001213900-23-014129.hdr.sgml : 20230224 20230224080008 ACCESSION NUMBER: 0001213900-23-014129 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20230222 FILED AS OF DATE: 20230224 DATE AS OF CHANGE: 20230224 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Brog Timothy CENTRAL INDEX KEY: 0001374187 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-33834 FILM NUMBER: 23662391 MAIL ADDRESS: STREET 1: C/O RUBICON TECHNOLOGY, INC. STREET 2: 900 EAST GREEN STREET, UNIT A CITY: BENSENVILLE STATE: IL ZIP: 60106 FORMER NAME: FORMER CONFORMED NAME: Brog Timothy E DATE OF NAME CHANGE: 20060829 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Rubicon Technology, Inc. CENTRAL INDEX KEY: 0001410172 STANDARD INDUSTRIAL CLASSIFICATION: SEMICONDUCTORS & RELATED DEVICES [3674] IRS NUMBER: 364419301 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 900 EAST GREEN STREET CITY: BENSENVILLE STATE: IL ZIP: 60106 BUSINESS PHONE: (847) 295-7000 MAIL ADDRESS: STREET 1: 900 EAST GREEN STREET CITY: BENSENVILLE STATE: IL ZIP: 60106 4 1 ownership.xml X0306 4 2023-02-22 0 0001410172 Rubicon Technology, Inc. RBCN 0001374187 Brog Timothy C/O RUBICON TECHNOLOGY, INC., 900 EAST GREEN ST. BENSENVILLE IL 60106 1 0 0 0 Common Stock 2023-02-22 4 S 0 52624 1.51 D 4969 D /s/ Timothy E. Brog 2023-02-24