0001213900-22-049870.txt : 20220822 0001213900-22-049870.hdr.sgml : 20220822 20220822080112 ACCESSION NUMBER: 0001213900-22-049870 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20220819 FILED AS OF DATE: 20220822 DATE AS OF CHANGE: 20220822 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: MIKOLAJCZYK MICHAEL E CENTRAL INDEX KEY: 0001224360 STANDARD INDUSTRIAL CLASSIFICATION: SERVICES-MANAGEMENT CONSULTING SERVICES [8742] STATE OF INCORPORATION: DE FISCAL YEAR END: 0331 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-33834 FILM NUMBER: 221182238 BUSINESS ADDRESS: STREET 1: 875 NORTH MICHIGAN AVE SUITE 3000 CITY: CHICAGO STATE: IL ZIP: 60611 BUSINESS PHONE: 3122555000 MAIL ADDRESS: STREET 1: 875 N. MICHIGAN AVE. STREET 2: STE 3000 CITY: CHICAGO STATE: IL ZIP: 60611 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 2022-08-19 0 0001410172 Rubicon Technology, Inc. RBCN 0001224360 MIKOLAJCZYK MICHAEL E C/O RUBICON TECHNOLOGY, INC., 900 EAST GREEN ST., UNIT A BENSENVILLE IL 60106 1 0 0 0 Common Stock 2022-08-19 4 S 0 31851 20.00 D 31456 D /s/ Timothy Brog Attorney in Fact 2022-08-22