0001213900-18-016936.txt : 20181204 0001213900-18-016936.hdr.sgml : 20181204 20181204173438 ACCESSION NUMBER: 0001213900-18-016936 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20181203 FILED AS OF DATE: 20181204 DATE AS OF CHANGE: 20181204 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: 181217956 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 2018-12-03 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 2018-12-03 4 A 0 15215 8.73 A 66275 D Common Stock 2018-12-04 4 A 0 5000 8.64 A 71275 D /s/ Inga A. Slavutsky, Attorney-in-Fact 2018-12-04