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Nierenberg Investment Management Company, LLC

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13F filer, CIK 1282683, Camas, WA

Nierenberg Investment Management Company, LLC reported $201,445,405 across 35 holdings for the quarter ended 2026-06-30, in a 13F-HR filed 2026-08-11. Its ten largest share positions make up 86.13% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001941040-26-000552

Period
2026-06-30
Reported value
$201M
Holdings
35
Top 10 weight
86.13%
New
3
Sold out
14

Largest buys vs the previous quarter

SecurityShares changeApprox. value
FCNadded+64,107$9.55M
HAEnew+26,280$1.97M
REInew+1,399,555$1.51M
TNDMadded+79,400$1.2M
CNDTnew+17,555$25.6K

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Largest sells vs the previous quarter

SecurityShares changeApprox. value
SGOVreduced-89,550-$9.01M
CCRNexited-144,555-$1.36M
ADTNexited-93,110-$1.17M
OCFCexited-39,555-$714K
HOPEexited-63,555-$710K

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Holdings, Q2 2026

Share positions as resolved from 13F-HR 0001941040-26-000552, largest first. % of portfolio is the value over $201,445,405, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
SGOVISHARES TRQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 640,597 shares; 2026Q1: 550,597 shares; 2026Q2: 461,047 shares 461,047$46.4M23.04%-89,550Timeline
EQTEQT CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 536,693 shares; 2024Q4: 536,693 shares; 2025Q1: 536,693 shares; 2025Q2: 536,693 shares; 2025Q3: 536,693 shares; 2025Q4: 533,363 shares; 2026Q1: 533,363 shares; 2026Q2: 533,363 shares 533,363$28.4M14.08%0Timeline
CRTOCRITEO S AQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: 67,555 shares; 2025Q1: 266,498 shares; 2025Q2: 535,702 shares; 2025Q3: 424,959 shares; 2025Q4: 888,888 shares; 2026Q1: 1,052,787 shares; 2026Q2: 1,052,787 shares 1,052,787$19.2M9.55%0Timeline
LYFTLYFT INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 42,555 shares; 2025Q3: 813,555 shares; 2025Q4: 813,555 shares; 2026Q1: 1,295,623 shares; 2026Q2: 1,295,623 shares 1,295,623$18.9M9.4%0Timeline
CARTMAPLEBEAR INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 291,888 shares; 2026Q2: 291,888 shares 291,888$13.8M6.86%0Timeline
KBRKBR INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 50,710 shares; 2024Q4: 50,710 shares; 2025Q1: 53,710 shares; 2025Q2: 53,710 shares; 2025Q3: 53,710 shares; 2025Q4: 73,710 shares; 2026Q1: 386,443 shares; 2026Q2: 386,443 shares 386,443$13.3M6.62%0Timeline
RVSBRIVERVIEW BANCORP INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 1,060,600 shares; 2024Q4: 1,286,422 shares; 2025Q1: 1,633,034 shares; 2025Q2: 1,937,775 shares; 2025Q3: 2,032,775 shares; 2025Q4: 2,032,775 shares; 2026Q1: 2,032,775 shares; 2026Q2: 2,032,775 shares 2,032,775$11M5.48%0Timeline
FCNFTI CONSULTING INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 9,555 shares; 2026Q1: 9,780 shares; 2026Q2: 73,887 shares 73,887$11M5.47%+64,107Timeline
RKTROCKET COS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 1,336,631 shares; 2026Q1: 429,631 shares; 2026Q2: 429,631 shares 429,631$6.77M3.36%0Timeline
GDOTGREEN DOT CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 77,555 shares; 2025Q2: 339,110 shares; 2025Q3: 339,110 shares; 2025Q4: 339,110 shares; 2026Q1: 339,110 shares; 2026Q2: 339,110 shares 339,110$4.58M2.27%0Timeline
DHCDIVERSIFIED HEALTHCARE TRQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 456,110 shares; 2024Q4: 456,110 shares; 2025Q1: 456,110 shares; 2025Q2: 456,110 shares; 2025Q3: 456,110 shares; 2025Q4: 456,110 shares; 2026Q1: 456,110 shares; 2026Q2: 456,110 shares 456,110$4.24M2.11%0Timeline
BKDBROOKDALE SR LIVING INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 160,110 shares; 2024Q4: 160,110 shares; 2025Q1: 410,110 shares; 2025Q2: 410,110 shares; 2025Q3: 410,110 shares; 2025Q4: 410,110 shares; 2026Q1: 255,110 shares; 2026Q2: 255,110 shares 255,110$4.1M2.04%0Timeline
FIVNFIVE9 INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 135,810 shares; 2026Q2: 135,810 shares 135,810$2.9M1.44%0Timeline
TNDMTANDEM DIABETES CARE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 44,555 shares; 2026Q1: 79,510 shares; 2026Q2: 158,910 shares 158,910$2.4M1.19%+79,400Timeline
HAEHAEMONETICS CORP MASSQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: not reported; 2026Q2: 26,280 shares 26,280$1.97M0.98%newTimeline
GLREGREENLIGHT CAP RE LTDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 55,555 shares; 2026Q1: 102,510 shares; 2026Q2: 102,510 shares 102,510$1.66M0.82%0Timeline
REIRING ENERGY INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: not reported; 2026Q2: 1,399,555 shares 1,399,555$1.51M0.75%newTimeline
CNXCCONCENTRIX CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 34,310 shares; 2024Q4: 64,480 shares; 2025Q1: 64,480 shares; 2025Q2: 50,480 shares; 2025Q3: 50,480 shares; 2025Q4: 64,480 shares; 2026Q1: 64,480 shares; 2026Q2: 64,480 shares 64,480$1.44M0.72%0Timeline
EXEEXPAND ENERGY CORPORATIONQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 255 shares; 2024Q4: 19,555 shares; 2025Q1: 19,555 shares; 2025Q2: 15,555 shares; 2025Q3: 15,555 shares; 2025Q4: 15,555 shares; 2026Q1: 15,555 shares; 2026Q2: 15,555 shares 15,555$1.42M0.7%0Timeline
FORRFORRESTER RESH INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 11,555 shares; 2025Q4: 11,555 shares; 2026Q1: 131,110 shares; 2026Q2: 131,110 shares 131,110$1.1M0.55%0Timeline
HOSHORNBECK OFFSHORE SERVICES IQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 113,450 shares; 2024Q4: 124,450 shares; 2025Q1: 124,450 shares; 2025Q2: 124,450 shares; 2025Q3: 124,450 shares; 2025Q4: 124,450 shares; 2026Q1: 124,450 shares; 2026Q2: 124,450 shares 124,450$1.09M0.54%0Timeline
DXCDXC TECHNOLOGY COQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 13,555 shares; 2024Q4: 13,555 shares; 2025Q1: 13,555 shares; 2025Q2: 13,555 shares; 2025Q3: 99,555 shares; 2025Q4: 102,510 shares; 2026Q1: 102,510 shares; 2026Q2: 102,510 shares 102,510$907K0.45%0Timeline
OSKOSHKOSH CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 5,555 shares; 2024Q4: 5,750 shares; 2025Q1: 5,750 shares; 2025Q2: 5,750 shares; 2025Q3: 5,750 shares; 2025Q4: 5,750 shares; 2026Q1: 5,750 shares; 2026Q2: 5,750 shares 5,750$883K0.44%0Timeline
TTECTTEC HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 55,555 shares; 2026Q1: 255,555 shares; 2026Q2: 255,555 shares 255,555$496K0.25%0Timeline
TTGTTECHTARGET INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 111,555 shares; 2025Q4: 136,910 shares; 2026Q1: 202,910 shares; 2026Q2: 136,910 shares 136,910$493K0.24%-66,000Timeline
FLRFLUOR CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 432,058 shares; 2024Q4: 122,555 shares; 2025Q1: 6,555 shares; 2025Q2: 6,555 shares; 2025Q3: 6,555 shares; 2025Q4: 6,555 shares; 2026Q1: 6,555 shares; 2026Q2: 6,555 shares 6,555$343K0.17%0Timeline
DHXDHI GROUP INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 44,555 shares; 2025Q2: 44,555 shares; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 84,555 shares; 2026Q2: 84,555 shares 84,555$314K0.16%0Timeline
OSURORASURE TECHNOLOGIES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 11,555 shares; 2025Q3: 44,555 shares; 2025Q4: 44,555 shares; 2026Q1: 55,555 shares; 2026Q2: 55,555 shares 55,555$248K0.12%0Timeline
ARHSARHAUS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 59,310 shares; 2024Q4: 59,310 shares; 2025Q1: 59,310 shares; 2025Q2: 59,310 shares; 2025Q3: 59,310 shares; 2025Q4: 15,310 shares; 2026Q1: 12,310 shares; 2026Q2: 12,310 shares 12,310$104K0.05%0Timeline
OISOIL STS INTL INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: 23,555 shares; 2025Q1: 111,555 shares; 2025Q2: 111,555 shares; 2025Q3: 111,555 shares; 2025Q4: 111,555 shares; 2026Q1: 11,555 shares; 2026Q2: 11,555 shares 11,555$92.6K0.05%0Timeline
TALKTALKSPACE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 11,555 shares; 2025Q4: 11,555 shares; 2026Q1: 11,555 shares; 2026Q2: 11,555 shares 11,555$60.1K0.03%0Timeline
NNBRNN INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 222,555 shares; 2025Q2: 13,555 shares; 2025Q3: 13,555 shares; 2025Q4: 13,555 shares; 2026Q1: 13,555 shares; 2026Q2: 13,555 shares 13,555$48.7K0.02%0Timeline
CTMXCYTOMX THERAPEUTICS INC.Quarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 12,555 shares; 2024Q4: 12,555 shares; 2025Q1: 12,555 shares; 2025Q2: 12,555 shares; 2025Q3: 12,555 shares; 2025Q4: 12,555 shares; 2026Q1: 12,555 shares; 2026Q2: 12,555 shares 12,555$47.1K0.02%0Timeline
WTIW & T OFFSHORE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 13,555 shares; 2024Q4: 13,555 shares; 2025Q1: 13,555 shares; 2025Q2: 13,555 shares; 2025Q3: 13,555 shares; 2025Q4: 13,555 shares; 2026Q1: 13,555 shares; 2026Q2: 13,555 shares 13,555$42.7K0.02%0Timeline
CNDTCONDUENT INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: not reported; 2026Q2: 17,555 shares 17,555$25.6K0.01%newTimeline

Sold out in Q2 2026

Positions in the previous quarter's report that this quarter's report no longer lists.

SecurityShares beforeValue beforeType
CCRNCROSS CTRY HEALTHCARE INC144,555$1.36Mshares
ADTNADTRAN HOLDINGS INC93,110$1.17Mshares
OCFCOCEANFIRST FINL CORP39,555$714Kshares
HOPEHOPE BANCORP INC63,555$710Kshares
CNXCCONCENTRIX CORP20,000$547Kcall
CLFDCLEARFIELD INC16,510$437Kshares
PLABPHOTRONICS INC6,330$256Kshares
BFHBREAD FINANCIAL HOLDINGS INC3,380$253Kshares
PTLOPORTILLOS INC33,555$178Kshares
ACHACCENDRA HEALTH INC50,000$114Kcall
WNCWABASH NATL CORP12,555$108Kshares
SCYXSCYNEXIS INC75,555$69.3Kshares
ACHACCENDRA HEALTH INC27,555$62.8Kshares
OLPXOLAPLEX HLDGS INC12,555$25.5Kshares

How Q2 2026 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0001941040-26-000552 base2026-08-11acceptance time not in the bulk data set