Walthausen & Co., LLC

13F filer, CIK 1483339, MALTA, NY

Walthausen & Co., LLC reported $474,435,000 across 141 holdings for the quarter ended 2021-03-31, in a 13F-HR filed 2021-05-13. Its ten largest share positions make up 15.34% of the portfolio.

Filed 2021-05-13 (acceptance time not in the bulk data set), ingested 2026-10-07 18:39:37 UTC13F-HR 0001483339-21-000003

Period: 2021-03-31
Reported value: $474M
Holdings: 141
Top 10 weight: 15.34%
New: 12
Sold out: 8

Largest buys vs the previous quarter

Security	Shares change	Approx. value
CMCnew	+166,770	$5.14M
SIGnew	+70,480	$4.09M
TNCnew	+47,220	$3.77M
EPRnew	+77,880	$3.63M
CLFnew	+178,270	$3.58M

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
BRYN MAWR BANK CORPORATIONreduced	-74,463	-$3.39M
MLRreduced	-72,180	-$3.33M
CBUreduced	-42,460	-$3.26M
PNFPreduced	-33,110	-$2.94M
HNIreduced	-60,810	-$2.41M

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, Q1 2021

Share positions as resolved from 13F-HR 0001483339-21-000003, largest first. % of portfolio is the value over $474,433,000, 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	674,587	$9.84M	2.07%	-7,750	Timeline
TEXTAINER GROUP HOLDINGS LTDTEXTAINER GROUP HOLDINGS LTD	277,948	$7.96M	1.68%	+46,410
CACCAMDEN NATL CORP	159,061	$7.61M	1.6%	+13,390	Timeline
KEKIMBALL ELECTRONICS INC	284,636	$7.34M	1.55%	-47,920	Timeline
ARAYACCURAY INC DEL	1,404,130	$6.95M	1.46%	+355,160	Timeline
GSBCGREAT SOUTHN BANCORP INC	119,714	$6.78M	1.43%	-4,920	Timeline
MERCMERCER INTL INC	463,560	$6.67M	1.41%	+208,090	Timeline
ALNTALLIENT INC	129,907	$6.67M	1.41%	+16,000	Timeline
MGRCMCGRATH RENTCORP	80,572	$6.5M	1.37%	-10,260	Timeline
UMHUMH PPTYS INC	336,290	$6.45M	1.36%	+14,400	Timeline
MHOM/I HOMES INC	103,794	$6.13M	1.29%	+17,870	Timeline
MNROMONRO INC	92,210	$6.07M	1.28%	-10,920	Timeline
ORNORION GROUP HLDGS INC	915,410	$5.56M	1.17%	-41,250	Timeline
KLICKULICKE & SOFFA INDS INC	109,690	$5.39M	1.14%	+3,840	Timeline
AMRCAMERESCO INC	109,950	$5.35M	1.13%	+31,160	Timeline
KELYAKELLY SVCS INC	239,880	$5.34M	1.13%	+63,660	Timeline
FBNCFIRST BANCORP N C	121,290	$5.28M	1.11%	+4,300	Timeline
CMCCOMMERCIAL METALS CO	166,770	$5.14M	1.08%	new	Timeline
BIGGQBIG LOTS INC.	75,240	$5.14M	1.08%	+10,040	Timeline
DLXDELUXE CORP MEDIUM TERM NTS	121,820	$5.11M	1.08%	-16,530	Timeline
VSECVSE CORP	127,290	$5.03M	1.06%	+74,240	Timeline
CNXCNX RES CORP	322,140	$4.74M	1%	+118,380	Timeline
HEARTLAND FINL USA INCHEARTLAND FINL USA INC	94,140	$4.73M	1%	+3,340
MEIMETHODE ELECTRS INC	109,940	$4.62M	0.97%	+35,670	Timeline
TCBKTRICO BANCSHARES	97,084	$4.6M	0.97%	+3,290	Timeline
NBTBNBT BANCORP INC	115,230	$4.6M	0.97%	+3,910	Timeline
LKFNLAKELAND FINL CORP	66,256	$4.58M	0.97%	-7,670	Timeline
HERITAGE CRYSTAL CLEAN INCHERITAGE CRYSTAL CLEAN INC	167,296	$4.54M	0.96%	+7,520
ABMABM INDS INC	86,763	$4.43M	0.93%	+3,910	Timeline
PRDOPERDOCEO ED CORP	369,880	$4.42M	0.93%	+133,260	Timeline
LFCRLIFECORE BIOMEDICAL INC	416,687	$4.42M	0.93%	-9,880	Timeline
CHCOCITY HLDG CO	53,897	$4.41M	0.93%	-5,330	Timeline
THFFFIRST FINANCIAL CORPORATION	97,910	$4.41M	0.93%	+3,921	Timeline
KNKNOWLES CORP	200,750	$4.2M	0.89%	+7,020	Timeline
THE SHYFT GROUPTHE SHYFT GROUP	112,740	$4.19M	0.88%	-20,940
STCSTEWART INFORMATION SVCS COR	80,380	$4.18M	0.88%	+16,740	Timeline
SBCFSEACOAST BKG CORP FLA	114,240	$4.14M	0.87%	+8,490	Timeline
SIGSIGNET JEWELERS LTD	70,480	$4.09M	0.86%	new	Timeline
AZZAZZ INC	75,600	$3.81M	0.8%	-35,810	Timeline
SOUTHWESTERN ENERGY COSOUTHWESTERN ENERGY CO	817,270	$3.8M	0.8%	-144,530
TNCTENNANT CO	47,220	$3.77M	0.8%	new	Timeline
ANDEANDERSONS INC	136,460	$3.74M	0.79%	+52,640	Timeline
MLRMILLER INDS INC TENN	79,903	$3.69M	0.78%	-72,180	Timeline
AINALBANY INTL CORP	44,180	$3.69M	0.78%	+5,080	Timeline
HUBGHUB GROUP INC	54,800	$3.69M	0.78%	+12,270	Timeline
HWCHANCOCK WHITNEY CORPORATION	86,630	$3.64M	0.77%	+15,660	Timeline
EPREPR PPTYS	77,880	$3.63M	0.76%	new	Timeline
WSBCWESBANCO INC	100,590	$3.63M	0.76%	+22,210	Timeline
CLFCLEVELAND-CLIFFS INC NEW	178,270	$3.58M	0.76%	new	Timeline
STERLING BANCORP DELSTERLING BANCORP DEL	155,521	$3.58M	0.75%	-8,560
CNXCCONCENTRIX CORP	23,810	$3.56M	0.75%	new	Timeline
SKYCHAMPION HOMES INC	78,105	$3.54M	0.75%	new	Timeline
GLOBAL MED REIT INCGLOBAL MED REIT INC	267,992	$3.51M	0.74%	+100,570
NUVASIVE INCNUVASIVE INC	52,220	$3.42M	0.72%	+14,590
NMIHNMI HLDGS INC	143,395	$3.39M	0.71%	+35,420	Timeline
ITTITT INC	37,244	$3.39M	0.71%	+5,020	Timeline
ICHRICHOR HOLDINGS	62,170	$3.35M	0.71%	-4,750	Timeline
TRITON INTL LTDTRITON INTL LTD	60,391	$3.32M	0.7%	+7,170
NWPXNWPX INFRASTRUCTURE INC	98,170	$3.28M	0.69%	+17,560	Timeline
ATLANTIC PWR CORPATLANTIC PWR CORP	1,132,950	$3.27M	0.69%	-480,360
SANDERSON FARMSSANDERSON FARMS	20,923	$3.26M	0.69%	+3,620
WBSWEBSTER FINL CORP	58,770	$3.24M	0.68%	new	Timeline
WSFSWSFS FINL CORP	65,033	$3.24M	0.68%	-4,420	Timeline
PACWEST BANCORP DELPACWEST BANCORP DEL	83,708	$3.19M	0.67%	-17,300
CASYCASEYS GEN STORES INC	14,767	$3.19M	0.67%	+2,260	Timeline
COLBCOLUMBIA BKG SYS INC	74,032	$3.19M	0.67%	-4,360	Timeline
WASHWASHINGTON TR BANCORP INC	61,750	$3.19M	0.67%	+2,200	Timeline
INDBINDEPENDENT BK CORP MASS	37,320	$3.14M	0.66%	+5,130	Timeline
CAI INTERNATIONAL INCCAI INTERNATIONAL INC	68,380	$3.11M	0.66%	+4,280
EHCENCOMPASS HEALTH CORP	37,709	$3.09M	0.65%	+6,980	Timeline
STRLSTERLING INFRASTRUCTURE INC	131,970	$3.06M	0.65%	-22,770	Timeline
ONTOONTO INNOVATION INC	46,146	$3.03M	0.64%	-6,080	Timeline
ATENA10 NETWORKS INC	314,390	$3.02M	0.64%	+63,870	Timeline
MMSMAXIMUS INC	33,891	$3.02M	0.64%	+6,830	Timeline
MLIMUELLER INDS INC	72,612	$3M	0.63%	+8,100	Timeline
AGMFEDERAL AGRIC MTG CORP	29,750	$3M	0.63%	+1,860	Timeline
HCKTHACKETT GROUP INC	182,242	$2.99M	0.63%	+47,230	Timeline
NWENORTHWESTERN ENERGY GROUP IN	44,789	$2.92M	0.62%	+5,510	Timeline
CVCOCAVCO INDS INC DEL	12,726	$2.87M	0.61%	+2,470	Timeline
SHOESHOE STA GROUP INC	46,040	$2.85M	0.6%	+2,900	Timeline
OCFCOCEANFIRST FINL CORP	118,800	$2.84M	0.6%	-58,893	Timeline
WLDNWILLDAN GROUP INC	69,251	$2.84M	0.6%	-1,109	Timeline
ACLSAXCELIS TECHNOLOGIES INC	68,130	$2.8M	0.59%	-1,670	Timeline
AXSAXIS CAP HLDGS LTD	55,559	$2.75M	0.58%	+3,710	Timeline
PNFPPINNACLE FINANCIAL PARTNERS	30,765	$2.73M	0.58%	-33,110	Timeline
ILPTINDUSTRIAL LOGISTICS PPTYS T	116,313	$2.69M	0.57%	+13,450	Timeline
QCRHQCR HLDGS INC	56,930	$2.69M	0.57%	+3,570	Timeline
MCSMARCUS CORP DEL	132,970	$2.66M	0.56%	new	Timeline
BRYN MAWR BANK CORPORATIONBRYN MAWR BANK CORPORATION	57,341	$2.61M	0.55%	-74,463
MOG-AMOOG INC	30,889	$2.57M	0.54%	+4,480	Timeline
FISIFINANCIAL INSTITUTIONS INC	83,550	$2.53M	0.53%	+5,250	Timeline
OSISOSI SYSTEMS INC	26,310	$2.53M	0.53%	+6,790	Timeline
ROGROGERS CORP	13,210	$2.49M	0.52%	-10,750	Timeline
EMEEMCOR GROUP INC	22,158	$2.48M	0.52%	-8,470	Timeline
CENTRAL VY CMNTY BANCORPCENTRAL VY CMNTY BANCORP	133,996	$2.47M	0.52%	+8,380
VSHVISHAY INTERTECHNOLOGY INC	101,778	$2.45M	0.52%	-52,170	Timeline
BSRRSIERRA BANCORP	91,206	$2.44M	0.52%	+12,060	Timeline
FCCOFIRST CMNTY CORP S C	122,340	$2.44M	0.51%	+7,700	Timeline
FMNBFARMERS NATIONAL BANC CORP	143,530	$2.4M	0.51%	+8,970	Timeline
MMSIMERIT MED SYS INC	40,007	$2.4M	0.51%	+4,260	Timeline
LCIILCI INDS	18,115	$2.4M	0.51%	+3,290	Timeline
WKCWORLD KINECT CORPORATION	67,748	$2.38M	0.5%	+11,340	Timeline
BCMLBAYCOM CORP	131,390	$2.37M	0.5%	+18,590	Timeline
PLPCPREFORMED LINE PRODS CO	34,360	$2.36M	0.5%	+20,400	Timeline
RLGTRADIANT LOGISTICS INC	335,100	$2.33M	0.49%	+21,660	Timeline
SMBKSMARTFINANCIAL INC	106,732	$2.31M	0.49%	+6,730	Timeline
THGHANOVER INS GROUP INC	17,790	$2.3M	0.49%	+1,430	Timeline
IEC ELECTRS CORP NEWIEC ELECTRS CORP NEW	191,240	$2.3M	0.49%	-5,880
PLBCPLUMAS BANCORP	78,310	$2.29M	0.48%	+8,120	Timeline
CAMBRIDGE BANCORPCAMBRIDGE BANCORP	27,170	$2.29M	0.48%	+1,700
PLABPHOTRONICS INC	174,427	$2.24M	0.47%	+22,530	Timeline
HZOMARINEMAX INC	44,110	$2.18M	0.46%	+4,860	Timeline
MACKINAC FINL CORPMACKINAC FINL CORP	153,940	$2.16M	0.45%	+17,530
MCFTMASTERCRAFT BOAT HLDGS INC	80,480	$2.14M	0.45%	+11,800	Timeline
GIIIG III APPAREL GROUP LTD	68,850	$2.08M	0.44%	new	Timeline
AROWARROW FINL CORP	61,958	$2.06M	0.44%	+8,280	Timeline
CATCHMARK TIMBER TR INC CL ACATCHMARK TIMBER TR INC CL A	201,330	$2.05M	0.43%	+46,950
PRIPRIMERICA INC	13,682	$2.02M	0.43%	-3,435	Timeline
APRIA INCAPRIA INC	72,140	$2.02M	0.42%	new
VVXV2X INC	37,300	$1.99M	0.42%	+2,350	Timeline
MITKMITEK SYS INC	133,567	$1.95M	0.41%	+8,410	Timeline
SYBTSTOCK YDS BANCORP INC	37,483	$1.91M	0.4%	-33,720	Timeline
HWKNHAWKINS INC	56,900	$1.91M	0.4%	new	Timeline
GOODRICH PETE CORP COM PARGOODRICH PETE CORP COM PAR	201,540	$1.91M	0.4%	+90,770
TPRTAPESTRY INC	45,655	$1.88M	0.4%	-34,220	Timeline
CTRNCITI TRENDS INC	22,340	$1.87M	0.39%	-27,180	Timeline
UTIUNIVERSAL TECHNICAL INST INC	318,970	$1.86M	0.39%	+54,720	Timeline
NODKNI HLDGS INC	100,740	$1.86M	0.39%	+6,340	Timeline
DLHCDLH HLDGS CORP	184,940	$1.83M	0.39%	+11,560	Timeline
ESNTESSENT GROUP LTD	37,420	$1.78M	0.37%	-15,460	Timeline
ITICINVESTORS TITLE CO NC	10,632	$1.76M	0.37%	-570	Timeline
FAFFIRST AMERN FINL CORP	29,337	$1.66M	0.35%	-6,130	Timeline
CBUCOMMUNITY FINANCIAL SYSTEM I	19,558	$1.5M	0.32%	-42,460	Timeline
WILLIAMS INDUSTRIAL SERVICESWILLIAMS INDUSTRIAL SERVICES	383,305	$1.33M	0.28%	-17,800
M.D.C. HOLDINGS INCM.D.C. HOLDINGS INC	20,787	$1.24M	0.26%	-1,543
OSKOSHKOSH CORP	9,792	$1.16M	0.24%	-2,540	Timeline
MTRNMATERION CORP	15,890	$1.05M	0.22%	-11,658	Timeline
SYSTEMAX INCSYSTEMAX INC	25,033	$1.03M	0.22%	-39,947
HNIHNI CORP	18,480	$731K	0.15%	-60,810	Timeline
APAMPCO-PITTSBURG CORP	53,290	$360K	0.08%	+41,500	Timeline
DARDARLING INGREDIENTS INC	3,970	$292K	0.06%	0	Timeline

Sold out in Q1 2021

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

Security	Shares before	Value before	Type
COHUCOHU INC	61,040	$2.33M	shares
SLGNSILGAN HLDGS INC	56,330	$2.09M	shares
SCLSTEPAN CO	16,873	$2.01M	shares
CVBFCVB FINL CORP	77,614	$1.51M	shares
TFINTRIUMPH FINANCIAL INC	18,900	$918K	shares
GATXGATX CORP	10,690	$889K	shares
VISTA OUTDOOR INCVISTA OUTDOOR INC	33,893	$805K	shares
OSURORASURE TECHNOLOGIES INC	27,380	$290K	shares

How Q1 2021 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 0001483339-21-000003	base		2021-05-13	acceptance time not in the bulk data set	2026-10-07 18:39:37 UTC