UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F COVER PAGE
OMB APPROVAL
OMB Number:3235-0006
Expires:July 31, 2015
Estimated average burden
hours per response:23.8
Report for the Calendar Year or Quarter Ended:
06-30-2025
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 St
Camas, WA 98607
Form 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:
Hanna Kuehl
Title:
Chief Compliance Officer
Phone:
360-604-8600


Signature, Place, and Date of Signing:

Hanna Kuehl
                         [Signature]
Camas, WASHINGTON
                 [City, State]
08-11-2025
                           [Date]
                          

Report Type (Check only one.):

☒ 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).)


Form 13F Summary Page

Report Summary:

Number of Other Included Managers:
0
Form 13F Information table Entry Total:
49
Form 13F Information table Value Total:
188225815
          (thousands)

List of Other Included Managers:

Provide a numbered list of the name(s) and Form 13F file number(s) of all institutional investment managers with respect to which this report is filed, other than the manager filing this report.
[If there are no entries in this list, state "NONE" and omit the column headings and list entries.]

  
NONE


UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE
OMB APPROVAL
OMB Number:3235-0006
Expires:July 31, 2015
Estimated average burden
hours per response:23.8
COLUMN 1COLUMN 2COLUMN 3COLUMN 4COLUMN 5COLUMN 6COLUMN 7COLUMN 8
VALUESHRS ORSH/PUT/INVESTMENTOTHERVOTING AUTHORITY
NAME OF ISSUERTITLE OF CLASSCUSIP(x$1000)PRN AMTPRNCALLDISCRETIONMANAGERSOLESHAREDNONE
ADTRAN HOLDINGS INCCOM00486H1053,077,697343,110SHSOLE 0 343,110 0
ARHAUS INCCOM CL A04035M102514,21859,310SHSOLE 0 59,310 0
ARISTA NETWORKS INCCOM SHS040413205572,9365,600SHPutSOLE5,600 0 0
BERRY CORPCOM08579X10115,3875,555SHSOLE5,555 0 0
BERRY CORPCOM08579X101443,200160,000SHCallSOLE160,000 0 0
BREAD FINANCIAL HOLDINGS INCCOM018581108878,50615,380SHSOLE 0 15,380 0
BROADCOM INCCOM11135F101882,0803,200SHPutSOLE3,200 0 0
BROOKDALE SR LIVING INCCOM1124631042,854,366410,110SHSOLE 0 410,110 0
CLEARFIELD INCCOM18482P1031,498,07934,510SHSOLE 0 34,510 0
CONCENTRIX CORPCOM20602D1012,668,12050,480SHSOLE 0 50,480 0
CONSTELLATION ENERGY CORPCOM21037T1091,646,0765,100SHPutSOLE5,100 0 0
CRITEO S ASPONS ADS22671810412,835,420535,702SHSOLE 0 535,702 0
CYTOMX THERAPEUTICS INCCOM23284F10528,50012,555SHSOLE12,555 0 0
DHI GROUP INCCOM23331S100132,32844,555SHSOLE44,555 0 0
DIVERSIFIED HEALTHCARE TRCOM SH BEN INT25525P1071,632,874456,110SHSOLE 0 456,110 0
DXC TECHNOLOGY COCOM23355L106207,25613,555SHSOLE13,555 0 0
EATON CORP PLCSHSG29183103571,1841,600SHPutSOLE1,600 0 0
ECOVYST INCCOM27923Q1091,883,106228,810SHSOLE 0 228,810 0
EQT CORPCOM26884L10931,299,936536,693SHSOLE 0 536,693 0
EXPAND ENERGY CORPORATIONCOM1651677351,819,00215,555SHSOLE15,555 0 0
EXPAND ENERGY CORPORATIONCOM1651677351,637,16014,000SHCallSOLE14,000 0 0
FLUOR CORP NEWCOM343412102336,0756,555SHSOLE6,555 0 0
GE VERNOVA INCCOM36828A1014,868,1809,200SHPutSOLE9,200 0 0
GREEN DOT CORPCL A39304D1023,655,606339,110SHSOLE 0 339,110 0
GULF IS FABRICATION INCCOM402307102116,74117,555SHSOLE17,555 0 0
HELIX ENERGY SOLUTIONS GRP ICOM42330P107776,568124,450SHSOLE 0 124,450 0
HOPE BANCORP INCCOM43940T1091,068,22599,555SHSOLE99,555 0 0
INVESCO QQQ TRUNIT SER 146090E1033,365,0046,100SHPutSOLE6,100 0 0
KBR INCCOM48242W1062,574,85753,710SHSOLE 0 53,710 0
LYFT INCCL A COM55087P104670,66742,555SHSOLE42,555 0 0
MATCH GROUP INC NEWCOM57667L1071,750,84556,680SHSOLE 0 56,680 0
MR COOPER GROUP INCCOM62482R10744,174,217296,054SHSOLE 0 296,054 0
NN INCCOM62933710628,46613,555SHSOLE13,555 0 0
NVIDIA CORPORATIONCOM67066G1041,706,29210,800SHPutSOLE10,800 0 0
OIL STS INTL INCCOM678026105597,935111,555SHSOLE111,555 0 0
OLAPLEX HLDGS INCCOM67936910817,57712,555SHSOLE12,555 0 0
ORASURE TECHNOLOGIES INCCOM68554V10834,66511,555SHSOLE11,555 0 0
OSHKOSH CORPCOM688239201652,8555,750SHSOLE 0 5,750 0
PHOTRONICS INCCOM719405102646,43434,330SHSOLE 0 34,330 0
POTBELLY CORPCOM73754Y10036,511,9092,980,564SHSOLE 0 2,980,564 0
PREFORMED LINE PRODS COCOM740444104727,9354,555SHSOLE4,555 0 0
RANGE RES CORPCOM75281A1091,202,00229,555SHSOLE29,555 0 0
RIVERVIEW BANCORP INCCOM76939710010,657,7631,937,775SHSOLE 0 1,937,775 0
SCYNEXIS INCCOM NEW81129220050,98575,555SHSOLE75,555 0 0
SEABOARD CORP DELCOM811543107818,303286SHSOLE 0 286 0
TUTOR PERINI CORPCOM9011091082,090,13044,680SHSOLE 0 44,680 0
VERTIV HOLDINGS COCOM CL A92537N1081,181,3729,200SHPutSOLE9,200 0 0
W & T OFFSHORE INCCOM92922P10622,36613,555SHSOLE13,555 0 0
WABASH NATL CORPCOM929566107824,41077,555SHSOLE77,555 0 0