Walthausen & Co., LLC

13F filer, CIK 1483339, MALTA, NY

Walthausen & Co., LLC reported $366,553,000 across 137 holdings for the quarter ended 2020-12-31, in a 13F-HR filed 2021-02-12. Its ten largest share positions make up 16.06% of the portfolio.

Filed 2021-02-12 (acceptance time not in the bulk data set), ingested 2026-10-07 18:42:52 UTC13F-HR 0001483339-21-000002

Period: 2020-12-31
Reported value: $367M
Holdings: 137
Top 10 weight: 16.06%
New: 19
Sold out: 14

Largest buys vs the previous quarter

Security	Shares change	Approx. value
MNROnew	+103,130	$5.5M
ARAYnew	+1,048,970	$4.37M
ROGnew	+23,960	$3.72M
PRDOnew	+236,620	$2.99M
BIGGQnew	+65,200	$2.8M

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

Security	Shares change	Approx. value
DARreduced	-336,221	-$19.4M
TPRreduced	-344,650	-$10.7M
WSFSreduced	-204,200	-$9.16M
STERLING BANCORP DELreduced	-455,170	-$8.18M
ONTOreduced	-168,990	-$8.03M

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, Q4 2020

Share positions as resolved from 13F-HR 0001483339-21-000002, largest first. % of portfolio is the value over $366,553,000, the sum of the share positions whose value is usable for ratios (method).

Security	Shares	Value	% of portfolio	Change	Timeline
GLDDGREAT LAKES DREDGE & DOCK CO	682,337	$8.99M	2.45%	-97,040	Timeline
MGRCMCGRATH RENTCORP	90,832	$6.09M	1.66%	-97,017	Timeline
GSBCGREAT SOUTHN BANCORP INC	124,634	$6.09M	1.66%	-21,230	Timeline
ALNTALLIENT INC	113,907	$5.82M	1.59%	-17,970	Timeline
MLRMILLER INDS INC TENN	152,083	$5.78M	1.58%	-29,070	Timeline
MNROMONRO INC	103,130	$5.5M	1.5%	new	Timeline
KEKIMBALL ELECTRONICS INC	332,556	$5.32M	1.45%	-46,629	Timeline
AZZAZZ INC	111,410	$5.29M	1.44%	-29,290	Timeline
CACCAMDEN NATL CORP	145,671	$5.21M	1.42%	-26,580	Timeline
UMHUMH PPTYS INC	321,890	$4.77M	1.3%	-86,840	Timeline
ORNORION GROUP HLDGS INC	956,660	$4.75M	1.29%	-97,000	Timeline
LFCRLIFECORE BIOMEDICAL INC	426,567	$4.63M	1.26%	-110,630	Timeline
TEXTAINER GROUP HOLDINGS LTDTEXTAINER GROUP HOLDINGS LTD	231,538	$4.44M	1.21%	+57,228
ARAYACCURAY INC DEL	1,048,970	$4.37M	1.19%	new	Timeline
CHCOCITY HLDG CO	59,227	$4.12M	1.12%	-15,440	Timeline
AMRCAMERESCO INC	78,790	$4.12M	1.12%	-88,060	Timeline
PNFPPINNACLE FINANCIAL PARTNERS	63,875	$4.11M	1.12%	-15,510	Timeline
DLXDELUXE CORP MEDIUM TERM NTS	138,350	$4.04M	1.1%	-17,660	Timeline
BRYN MAWR BANK CORPORATIONBRYN MAWR BANK CORPORATION	131,804	$4.03M	1.1%	-34,200
LKFNLAKELAND FINL CORP	73,926	$3.96M	1.08%	-18,950	Timeline
FBNCFIRST BANCORP N C	116,990	$3.96M	1.08%	-63,440	Timeline
CBUCOMMUNITY FINANCIAL SYSTEM I	62,018	$3.86M	1.05%	-15,760	Timeline
MHOM/I HOMES INC	85,924	$3.81M	1.04%	+5,550	Timeline
THE SHYFT GROUPTHE SHYFT GROUP	133,680	$3.79M	1.04%	-35,140
ROGROGERS CORP	23,960	$3.72M	1.02%	new	Timeline
HEARTLAND FINL USA INCHEARTLAND FINL USA INC	90,800	$3.67M	1%	-3,119
THFFFIRST FINANCIAL CORPORATION	93,989	$3.65M	1%	-23,950	Timeline
KELYAKELLY SVCS INC	176,220	$3.62M	0.99%	-106,450	Timeline
NBTBNBT BANCORP INC	111,320	$3.57M	0.97%	-26,880	Timeline
KNKNOWLES CORP	193,730	$3.57M	0.97%	+42,100	Timeline
ATLANTIC PWR CORPATLANTIC PWR CORP	1,613,310	$3.39M	0.92%	-348,180
KLICKULICKE & SOFFA INDS INC	105,850	$3.37M	0.92%	-90,190	Timeline
HERITAGE CRYSTAL CLEAN INCHERITAGE CRYSTAL CLEAN INC	159,776	$3.37M	0.92%	-40,000
OCFCOCEANFIRST FINL CORP	177,693	$3.31M	0.9%	-44,980	Timeline
TCBKTRICO BANCSHARES	93,794	$3.31M	0.9%	-23,810	Timeline
VSHVISHAY INTERTECHNOLOGY INC	153,948	$3.19M	0.87%	-11,370	Timeline
ABMABM INDS INC	82,853	$3.13M	0.86%	+7,330	Timeline
WSFSWSFS FINL CORP	69,453	$3.12M	0.85%	-204,200	Timeline
SBCFSEACOAST BKG CORP FLA	105,750	$3.11M	0.85%	-4,430	Timeline
STCSTEWART INFORMATION SVCS COR	63,640	$3.08M	0.84%	-45,230	Timeline
PRDOPERDOCEO ED CORP	236,620	$2.99M	0.82%	new	Timeline
STERLING BANCORP DELSTERLING BANCORP DEL	164,081	$2.95M	0.8%	-455,170
WLDNWILLDAN GROUP INC	70,360	$2.93M	0.8%	0	Timeline
SYBTSTOCK YDS BANCORP INC	71,203	$2.88M	0.79%	-52,935	Timeline
STRLSTERLING INFRASTRUCTURE INC	154,740	$2.88M	0.79%	-77,140	Timeline
AINALBANY INTL CORP	39,100	$2.87M	0.78%	-28,850	Timeline
SOUTHWESTERN ENERGY COSOUTHWESTERN ENERGY CO	961,800	$2.87M	0.78%	-40,140
MEIMETHODE ELECTRS INC	74,270	$2.84M	0.78%	-12,770	Timeline
COLBCOLUMBIA BKG SYS INC	78,392	$2.81M	0.77%	-214,440	Timeline
EMEEMCOR GROUP INC	30,628	$2.8M	0.76%	-79,317	Timeline
BIGGQBIG LOTS INC.	65,200	$2.8M	0.76%	new	Timeline
HNIHNI CORP	79,290	$2.73M	0.75%	-41,420	Timeline
IEC ELECTRS CORP NEWIEC ELECTRS CORP NEW	197,120	$2.67M	0.73%	0
WASHWASHINGTON TR BANCORP INC	59,550	$2.67M	0.73%	+22,850	Timeline
MERCMERCER INTL INC	255,470	$2.62M	0.71%	-21,809	Timeline
AXSAXIS CAP HLDGS LTD	51,849	$2.61M	0.71%	-120,640	Timeline
TRITON INTL LTDTRITON INTL LTD	53,221	$2.58M	0.7%	-98,110
PACWEST BANCORP DELPACWEST BANCORP DEL	101,008	$2.57M	0.7%	-254,660
EHCENCOMPASS HEALTH CORP	30,729	$2.54M	0.69%	-89,287	Timeline
ONTOONTO INNOVATION INC	52,226	$2.48M	0.68%	-168,990	Timeline
TPRTAPESTRY INC	79,875	$2.48M	0.68%	-344,650	Timeline
ITTITT INC	32,224	$2.48M	0.68%	-80,405	Timeline
ATENA10 NETWORKS INC	250,520	$2.47M	0.67%	new	Timeline
CTRNCITI TRENDS INC	49,520	$2.46M	0.67%	-17,310	Timeline
NMIHNMI HLDGS INC	107,975	$2.45M	0.67%	new	Timeline
HUBGHUB GROUP INC	42,530	$2.42M	0.66%	new	Timeline
HWCHANCOCK WHITNEY CORPORATION	70,970	$2.41M	0.66%	new	Timeline
ILPTINDUSTRIAL LOGISTICS PPTYS T	102,863	$2.4M	0.65%	-258,990	Timeline
INDBINDEPENDENT BK CORP MASS	32,190	$2.35M	0.64%	new	Timeline
WSBCWESBANCO INC	78,380	$2.35M	0.64%	new	Timeline
SYSTEMAX INCSYSTEMAX INC	64,980	$2.33M	0.64%	-35,150
COHUCOHU INC	61,040	$2.33M	0.64%	-18,850	Timeline
PRIPRIMERICA INC	17,117	$2.29M	0.63%	-43,035	Timeline
NWENORTHWESTERN ENERGY GROUP IN	39,279	$2.29M	0.62%	-67,840	Timeline
SANDERSON FARMSSANDERSON FARMS	17,303	$2.29M	0.62%	-41,675
ESNTESSENT GROUP LTD	52,880	$2.28M	0.62%	-144,840	Timeline
NWPXNWPX INFRASTRUCTURE INC	80,610	$2.28M	0.62%	0	Timeline
MLIMUELLER INDS INC	64,512	$2.27M	0.62%	-164,993	Timeline
CASYCASEYS GEN STORES INC	12,507	$2.23M	0.61%	-24,008	Timeline
MITKMITEK SYS INC	125,157	$2.23M	0.61%	0	Timeline
CNXCNX RES CORP	203,760	$2.2M	0.6%	new	Timeline
GLOBAL MED REIT INCGLOBAL MED REIT INC	167,422	$2.19M	0.6%	+24,962
NUVASIVE INCNUVASIVE INC	37,630	$2.12M	0.58%	new
QCRHQCR HLDGS INC	53,360	$2.11M	0.58%	+2,390	Timeline
MOG-AMOOG INC	26,409	$2.09M	0.57%	-73,213	Timeline
SLGNSILGAN HLDGS INC	56,330	$2.09M	0.57%	-57,580	Timeline
AGMFEDERAL AGRIC MTG CORP	27,890	$2.07M	0.56%	+1,970	Timeline
ANDEANDERSONS INC	83,820	$2.05M	0.56%	-19,990	Timeline
VSECVSE CORP	53,050	$2.04M	0.56%	new	Timeline
ACLSAXCELIS TECHNOLOGIES INC	69,800	$2.03M	0.55%	new	Timeline
ICHRICHOR HOLDINGS	66,920	$2.02M	0.55%	+3,880	Timeline
SCLSTEPAN CO	16,873	$2.01M	0.55%	-26,980	Timeline
CAI INTERNATIONAL INCCAI INTERNATIONAL INC	64,100	$2M	0.55%	+37,630
MMSIMERIT MED SYS INC	35,747	$1.98M	0.54%	-98,050	Timeline
MMSMAXIMUS INC	27,061	$1.98M	0.54%	-68,110	Timeline
FCCOFIRST CMNTY CORP S C	114,640	$1.95M	0.53%	0	Timeline
HCKTHACKETT GROUP INC	135,012	$1.94M	0.53%	-34,988	Timeline
LCIILCI INDS	14,825	$1.92M	0.52%	-38,480	Timeline
THGHANOVER INS GROUP INC	16,360	$1.91M	0.52%	new	Timeline
BSRRSIERRA BANCORP	79,146	$1.89M	0.52%	0	Timeline
CENTRAL VY CMNTY BANCORPCENTRAL VY CMNTY BANCORP	125,616	$1.87M	0.51%	+10,070
FAFFIRST AMERN FINL CORP	35,467	$1.83M	0.5%	-89,390	Timeline
OSISOSI SYSTEMS INC	19,520	$1.82M	0.5%	-2,950	Timeline
RLGTRADIANT LOGISTICS INC	313,440	$1.82M	0.5%	0	Timeline
SMBKSMARTFINANCIAL INC	100,002	$1.81M	0.49%	0	Timeline
CVCOCAVCO INDS INC DEL	10,256	$1.8M	0.49%	-25,410	Timeline
FMNBFARMERS NATIONAL BANC CORP	134,560	$1.79M	0.49%	+12,520	Timeline
CAMBRIDGE BANCORPCAMBRIDGE BANCORP	25,470	$1.78M	0.48%	new
FISIFINANCIAL INSTITUTIONS INC	78,300	$1.76M	0.48%	+43,820	Timeline
WKCWORLD KINECT CORPORATION	56,408	$1.76M	0.48%	-138,580	Timeline
MTRNMATERION CORP	27,548	$1.75M	0.48%	-73,840	Timeline
MACKINAC FINL CORPMACKINAC FINL CORP	136,410	$1.74M	0.47%	0
VVXV2X INC	34,950	$1.74M	0.47%	0	Timeline
ITICINVESTORS TITLE CO NC	11,202	$1.71M	0.47%	0	Timeline
BCMLBAYCOM CORP	112,800	$1.71M	0.47%	+28,970	Timeline
UTIUNIVERSAL TECHNICAL INST INC	264,250	$1.71M	0.47%	+41,410	Timeline
MCFTMASTERCRAFT BOAT HLDGS INC	68,680	$1.71M	0.47%	0	Timeline
PLABPHOTRONICS INC	151,897	$1.7M	0.46%	0	Timeline
SHOESHOE STA GROUP INC	43,140	$1.69M	0.46%	-7,410	Timeline
PLBCPLUMAS BANCORP	70,190	$1.65M	0.45%	0	Timeline
DLHCDLH HLDGS CORP	173,380	$1.62M	0.44%	+17,170	Timeline
AROWARROW FINL CORP	53,678	$1.61M	0.44%	-1	Timeline
NODKNI HLDGS INC	94,400	$1.55M	0.42%	-12,160	Timeline
CVBFCVB FINL CORP	77,614	$1.51M	0.41%	-193,201	Timeline
CATCHMARK TIMBER TR INC CL ACATCHMARK TIMBER TR INC CL A	154,380	$1.45M	0.39%	+23,480
HZOMARINEMAX INC	39,250	$1.38M	0.38%	-5,090	Timeline
GOODRICH PETE CORP COM PARGOODRICH PETE CORP COM PAR	110,770	$1.12M	0.31%	0
M.D.C. HOLDINGS INCM.D.C. HOLDINGS INC	22,330	$1.08M	0.3%	-121,242
OSKOSHKOSH CORP	12,332	$1.06M	0.29%	-63,609	Timeline
WILLIAMS INDUSTRIAL SERVICESWILLIAMS INDUSTRIAL SERVICES	401,105	$1.04M	0.28%	-129,200
PLPCPREFORMED LINE PRODS CO	13,960	$955K	0.26%	new	Timeline
TFINTRIUMPH FINANCIAL INC	18,900	$918K	0.25%	-33,740	Timeline
GATXGATX CORP	10,690	$889K	0.24%	-44,118	Timeline
VISTA OUTDOOR INCVISTA OUTDOOR INC	33,893	$805K	0.22%	-131,470
OSURORASURE TECHNOLOGIES INC	27,380	$290K	0.08%	0	Timeline
DARDARLING INGREDIENTS INC	3,970	$229K	0.06%	-336,221	Timeline
APAMPCO-PITTSBURG CORP	11,790	$65K	0.02%	new	Timeline

Sold out in Q4 2020

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

Security	Shares before	Value before	Type
AMSFAMERISAFE INC	119,176	$6.84M	shares
AWRAMER STATES WTR CO	56,713	$4.25M	shares
CNXNPC CONNECTION INC	97,580	$4.01M	shares
BIOTELEMETRY INCBIOTELEMETRY INC	82,560	$3.76M	shares
FLWS1 800 FLOWERS COM INC	150,730	$3.76M	shares
NATIONAL INSTRS CORPNATIONAL INSTRS CORP	99,108	$3.54M	shares
SEACOR HOLDINGS INCSEACOR HOLDINGS INC	70,190	$2.04M	shares
KIMBALL INTL INCKIMBALL INTL INC	185,633	$1.96M	shares
ATKRATKORE INC	75,477	$1.72M	shares
HIBBETT INCHIBBETT INC	39,390	$1.54M	shares
DXPEDXP ENTERPRISES INC	68,720	$1.11M	shares
DHXDHI GROUP INC	489,120	$1.1M	shares
GBLIGLOBAL INDEMNITY GROUP LLC	51,170	$1.06M	shares
RAILFREIGHTCAR AMER INC	353,230	$805K	shares

How Q4 2020 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).

Filing	Role	Amendment	Filed	Accepted	Ingested
13F-HR 0001483339-21-000002	base		2021-02-12	acceptance time not in the bulk data set	2026-10-07 18:42:52 UTC