13F-HR 1 d77602_13f-hr.txt HOLDING REPORT UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 13F Report for the Calendar Year or Quarter Ended: June 30, 2009 --------------- 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: Nierenberg Investment Management Company, Inc. Address: 19605 NE 8th Street Camas, WA 98607 13F File Number: 028-10859 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: David Nierenberg Title: President Phone: 360-604-8600 Signature, Place, and Date of Signing: DAVID NIERENBERG Camas, WA, August 14, 2009 Report Type (Check only one.): [X] 13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager are reported in this report.) [ ] 13F NOTICE. (Check here if no holdings reported are in this report, and all holdings are reported by other reporting manager(s).) [ ] 13F COMBINATION REPORT. (Check here if a portion of the holdings for This reporting manager are reported in this report and a portion are reported by other reporting manager(s). Report Summary: Number of Other Included Managers: -1- ---------------- Form 13F Information Table Entry Total: 10 ---------------- Form 13F Information Table Value Total: $317,995 ---------------- (thousands) List of Other Included Managers: 1 - Nierenberg Investment Management Offshore, Inc. Form 13F Information Table

COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN6 COLUMN 7 COLUMN 8 Title Value SHS OR PUT/ Invest. Other Voting Authority Name of Issuer of Class Cusip (x$1000) PRN AMT SH/PRN CALL Disc.(1) Managers Sole Shared None ASSET ACCEPTANCE CAPITAL CORP Common 04543P100 37,920 4,931,049 SH defined 1 4,083,208 847,841 BROOKS AUTOMATION INC Common 114340102 20,656 4,610,670 SH defined 1 3,893,720 716,950 ELECTRO SCIENTIFIC INDS INC Common 285229100 42,709 3,806,484 SH defined 1 3,216,390 590,094 MEDCATH CORPORATION Common 58404W109 34,583 2,940,711 SH defined 1 2,443,045 497,666 MEXICAN RESTAURANTS INC Common 59283R104 3,149 1,192,956 SH defined 1 922,965 269,991 MOVE, INC Common 62458M108 60,816 28,155,339 SH defined 1 23,650,193 4,505,146 NATUS MEDICAL INC Common 639050103 41,568 3,602,044 SH defined 1 3,020,217 581,827 RADISYS CORP Common 750459109 40,928 4,527,463 SH defined 1 3,726,287 801,176 SUPERIOR ENERGY SERVICES INC Common 868157108 33,725 1,952,809 SH defined 1 1,661,075 291,734 UNITED STATES NATL GAS FUND LP Unit 912318102 1,942 140,000 SH defined 1 118,015 21,985

(1) Nierenberg Investment Management Company, Inc. shares investment discretion with Nierenberg Investment Management Offshore, Inc. only with respect to those shares with which it shares voting authority, as set forth in Column 8.