Form SC 13G - Statement of Beneficial Ownership by Certain Investors:
SEC Accession No. 0000912938-13-000530
Filing Date
2013-12-05
Accepted
2013-12-05 16:52:35
Documents
1

Document Format Files

Seq Description Document Type Size
1 RUBICON TECHNOLOGY, INC. rubicontechnology.htm SC 13G 50323
  Complete submission text file 0000912938-13-000530.txt   51892
Mailing Address 111 HUNTINGTON AVENUE 24TH FLOOR BOSTON MA 02199
Business Address 111 HUNTINGTON AVENUE 24TH FLOOR BOSTON MA 02199 18006372929
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ (Filed by) CIK: 0000912938 (see all company filings)

EIN.: 000000000 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13G
SIC: 0000

Mailing Address 9931 FRANKLIN AVENUE FRANKLIN PARK IL 60131
Business Address 9931 FRANKLIN AVENUE FRANKLIN PARK IL 60131 (847) 295-7000
Rubicon Technology, Inc. (Subject) CIK: 0001410172 (see all company filings)

EIN.: 364419301 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13G | Act: 34 | File No.: 005-83694 | Film No.: 131260328
SIC: 3674 Semiconductors & Related Devices