0001193125-12-318896.txt : 20120727 0001193125-12-318896.hdr.sgml : 20120727 20120727123954 ACCESSION NUMBER: 0001193125-12-318896 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20120630 FILED AS OF DATE: 20120727 DATE AS OF CHANGE: 20120727 EFFECTIVENESS DATE: 20120727 FILER: COMPANY DATA: COMPANY CONFORMED NAME: FRONTIER CAPITAL MANAGEMENT CO LLC CENTRAL INDEX KEY: 0000351173 IRS NUMBER: 042715137 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 13F-HR SEC ACT: 1934 Act SEC FILE NUMBER: 028-01185 FILM NUMBER: 12989709 BUSINESS ADDRESS: STREET 1: 99 SUMMER ST CITY: BOSTON STATE: MA ZIP: 02110 BUSINESS PHONE: 6172610777 MAIL ADDRESS: STREET 1: 99 SUMMER ST CITY: BOSTON STATE: MA ZIP: 02110 FORMER COMPANY: FORMER CONFORMED NAME: FRONTIER CAPITAL MANAGEMENT CO INC DATE OF NAME CHANGE: 19990326 FORMER COMPANY: FORMER CONFORMED NAME: FRONTIER CAPITAL MANAGEMENT CORP DATE OF NAME CHANGE: 19810306 13F-HR 1 d386380d13fhr.txt 13F-HR UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 13F FORM 13F COVER PAGE Report for the Calendar Year or Quarter Ended: June 30, 2012 Check here if Amendment [_]; Amendment Number: ---------- This Amendment (check only one.): [_] is a restatement. [_] adds new holdings entries. Institutional Investment Manager Filing this Report: Name: Frontier Capital Management Co., LLC Address: 99 Summer Street, 19th Floor Boston, MA 02110 13F File Number: 28-01185 The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists and tables, are considered integral parts of this form. Person Signing this Report on Behalf of Reporting Manager: Name: Mr. William J. Ballou Title: Chief Operating Officer & General Counsel Phone: (617) 261-0777 Signature, Place and Date of Signing: /S/ William J. Ballou Boston, MA July 27, 2012 ------------------------- ------------------------ ------------------------- [Signature] [City, State] [Date] Report Type [X] 13 F HOLDINGS REPORT [_] 13 F NOTICE [_] 13 F COMBINATION REPORT I am signing this report as required by the Securities Exchange Act of 1934. SEC13F.LNS FRONTIER CAPITAL MANAGEMENT FORM 13F SUMMARY PAGE AS OF DATE: 06/30/12 RUN DATE: 07/02/12 4:21 P.M. REPORT SUMMARY: NUMBER OF OTHER INCLUDED MANAGERS: 0 FORM 13F INFORMATION TABLE ENTRY TOTAL: 318 FORM 13F INFORMATION TABLE VALUE TOTAL: $8,966,324.00 LIST OF OTHER INCLUDED MANAGERS: NO. 13F FILE NUMBER NAME

VOTING AUTHORITY TITLE OF VALUE SHARES/ SH/ PUT/ INVESTMENT OTHER ---------------------- NAME OF ISSUER CLASS CUSIP (x$1000) PRN AMT PRN CALL DISCRETION MANAGER SOLE SHARED NONE -------------------------------------- -------- --------- -------- -------- --- ---- ---------- ------- ------- ------ ------- A.O. Smith Corp. COM 831865209 32135 657302 SH SOLE 395483 0 261819 Abraxas Petroleum Corp. COM 003830106 15379 4828620 SH SOLE 3051530 0 1777090 Accuride Corp. COM 00439T206 2393 398822 SH SOLE 340422 0 58400 ACE Ltd. COM H0023R105 4528 61080 SH SOLE 61080 0 0 Acme Packet Inc. COM 004764106 2129 114160 SH SOLE 114160 0 0 Actuant Corp. Cl A COM 00508X203 5290 194784 SH SOLE 166293 0 28491 Adtran Inc. COM 00738A106 7994 264799 SH SOLE 175309 0 89490 Advanced Energy Industries Inc. COM 007973100 3218 239823 SH SOLE 204693 0 35130 Advent Software Inc. COM 007974108 14354 529479 SH SOLE 336720 0 192759 Advisory Board Co. 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