Conestoga Capital Advisors 13F-HR Quarterly holdings report by institutional manager

The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

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

FORM 13F INFORMATION TABLE

OMB APPROVAL

OMB Number:		3235-0006
Expires:	Oct 31, 2018
Estimated average burden
hours per response:		23.8

COLUMN 1	COLUMN 2	COLUMN 3	COLUMN 4	COLUMN 5			COLUMN 6	COLUMN 7	COLUMN 8
			VALUE	SHRS OR	SH/	PUT/	INVESTMENT	OTHER	VOTING AUTHORITY
NAME OF ISSUER	TITLE OF CLASS	CUSIP	(x$1000)	PRN AMT	PRN	CALL	DISCRETION	MANAGER	SOLE	SHARED	NONE
3M CO	COM	88579Y101	351	1,820	SH		SOLE		1,320	0	500
AAON INC	COM PAR $0.004	000360206	123,851	1,769,046	SH		SOLE		1,765,825	0	3,221
ACI WORLDWIDE INC	COM	004498101	116,579	3,063,842	SH		SOLE		3,041,467	0	22,375
ADOBE SYSTEMS INCORPORATED	COM	00724F101	516	1,085	SH		SOLE		1,025	0	60
ALIGN TECHNOLOGY INC	COM	016255101	1,046	1,932	SH		SOLE		1,872	0	60
ALPHABET INC	CAP STK CL A	02079K305	402	195	SH		SOLE		145	0	50
ALPHABET INC	CAP STK CL C	02079K107	403	195	SH		SOLE		145	0	50
ALTAIR ENGR INC	COM CL A	021369103	144,614	2,311,234	SH		SOLE		2,288,569	0	22,665
AMGEN INC	COM	031162100	331	1,330	SH		SOLE		1,330	0	0
ANSYS INC	COM	03662Q105	11,469	33,776	SH		SOLE		30,576	0	3,200
APPLE INC	COM	037833100	1,002	8,200	SH		SOLE		5,740	0	2,460
APTARGROUP INC	COM	038336103	16,166	114,108	SH		SOLE		103,538	0	10,570
AVALARA INC	COM	05338G106	12,470	93,454	SH		SOLE		85,059	0	8,395
AXON ENTERPRISE INC	COM	05464C101	136,355	957,412	SH		SOLE		944,457	0	12,955
BALCHEM CORP	COM	057665200	119,305	951,316	SH		SOLE		942,205	0	9,111
BERKSHIRE HATHAWAY INC DEL	CL B NEW	084670702	281	1,100	SH		SOLE		1,100	0	0
BIODESIX INC	COM	09075X108	1,943	95,650	SH		SOLE		95,650	0	0
BIOLIFE SOLUTIONS INC	COM NEW	09062W204	1,778	49,385	SH		SOLE		49,385	0	0
BIO-TECHNE CORP	COM	09073M104	26,035	68,168	SH		SOLE		62,318	0	5,850
BLACKLINE INC	COM	09239B109	151,102	1,393,927	SH		SOLE		1,391,377	0	2,550
BOTTOMLINE TECH DEL INC	COM	101388106	88,966	1,966,096	SH		SOLE		1,948,886	0	17,210
BRIGHT HORIZONS FAM SOL IN D	COM	109194100	24,988	145,744	SH		SOLE		132,714	0	13,030
CANTEL MED CORP	COM	138098108	59,519	745,475	SH		SOLE		744,369	0	1,106
CASELLA WASTE SYS INC	CL A	147448104	217,694	3,424,482	SH		SOLE		3,376,502	0	47,980
CODEXIS INC	COM	192005106	2,314	101,085	SH		SOLE		101,085	0	0
COGNEX CORP	COM	192422103	18,790	226,417	SH		SOLE		205,887	0	20,530
CONSTRUCTION PARTNERS INC	COM CL A	21044C107	156,744	5,245,773	SH		SOLE		5,178,305	0	67,468
COPART INC	COM	217204106	9,242	85,092	SH		SOLE		77,687	0	7,405
COSTAR GROUP INC	COM	22160N109	1,225	1,490	SH		SOLE		1,490	0	0
COSTCO WHSL CORP NEW	COM	22160K105	828	2,350	SH		SOLE		1,875	0	475
COUPA SOFTWARE INC	COM	22266L106	272	1,070	SH		SOLE		1,070	0	0
CRYOPORT INC	COM PAR $0.001	229050307	1,628	31,300	SH		SOLE		31,300	0	0
DANAHER CORPORATION	COM	235851102	340	1,510	SH		SOLE		1,230	0	280
DESCARTES SYS GROUP INC	COM	249906108	185,262	3,041,567	SH		SOLE		3,004,382	0	37,185
DIGI INTL INC	COM	253798102	1,832	96,450	SH		SOLE		96,450	0	0
DISNEY WALT CO	COM	254687106	203	1,100	SH		SOLE		810	0	290
DOLBY LABORATORIES INC	COM CL A	25659T107	904	9,153	SH		SOLE		7,663	0	1,490
DORMAN PRODS INC	COM	258278100	92,519	901,389	SH		SOLE		899,759	0	1,630
DOUGLAS DYNAMICS INC	COM	25960R105	130,053	2,818,040	SH		SOLE		2,778,015	0	40,025
ECOLAB INC	COM	278865100	256	1,195	SH		SOLE		735	0	460
ESCO TECHNOLOGIES INC	COM	296315104	105,147	965,621	SH		SOLE		963,838	0	1,783
ESSENTIAL UTILS INC	COM	29670G102	272	6,087	SH		SOLE		5,387	0	700
EVI INDS INC	COM	26929N102	30,944	1,075,562	SH		SOLE		1,045,112	0	30,450
EXPONENT INC	COM	30214U102	194,629	1,997,219	SH		SOLE		1,969,832	0	27,387
EXXON MOBIL CORP	COM	30231G102	422	7,554	SH		SOLE		7,404	0	150
FACTSET RESH SYS INC	COM	303075105	638	2,066	SH		SOLE		2,066	0	0
FAIR ISAAC CORP	COM	303250104	19,697	40,524	SH		SOLE		36,769	0	3,755
FASTENAL CO	COM	311900104	1,366	27,162	SH		SOLE		23,862	0	3,300
FIRSTSERVICE CORP NEW	COM	33767E202	183,628	1,239,139	SH		SOLE		1,223,372	0	15,767
FIVE9 INC	COM	338307101	74,686	477,747	SH		SOLE		473,387	0	4,360
FORTINET INC	COM	34959E109	947	5,133	SH		SOLE		5,133	0	0
FOX FACTORY HLDG CORP	COM	35138V102	225,486	1,774,640	SH		SOLE		1,771,390	0	3,250
GARMIN LTD	SHS	H2906T109	603	4,570	SH		SOLE		3,870	0	700
GARTNER INC	COM	366651107	11,874	65,045	SH		SOLE		59,245	0	5,800
GENERAC HLDGS INC	COM	368736104	18,504	56,509	SH		SOLE		51,234	0	5,275
GRACO INC	COM	384109104	20,242	282,628	SH		SOLE		257,078	0	25,550
GRAND CANYON ED INC	COM	38526M106	103,795	969,139	SH		SOLE		958,514	0	10,625
GUIDEWIRE SOFTWARE INC	COM	40171V100	16,713	164,447	SH		SOLE		149,412	0	15,035
HEALTH CATALYST INC	COM	42225T107	13,762	294,244	SH		SOLE		271,094	0	23,150
HEICO CORP NEW	CL A	422806208	23,281	204,940	SH		SOLE		186,675	0	18,265
HELIOS TECHNOLOGIES INC	COM	42328H109	101,968	1,399,309	SH		SOLE		1,396,759	0	2,550
HENRY JACK & ASSOC INC	COM	426281101	20,519	135,242	SH		SOLE		122,957	0	12,285
HOME DEPOT INC	COM	437076102	366	1,200	SH		SOLE		1,200	0	0
I3 VERTICALS INC	COM CL A	46571Y107	1,796	57,700	SH		SOLE		57,700	0	0
IAA INC	COM	449253103	16,874	306,029	SH		SOLE		277,844	0	28,185
IDEXX LABS INC	COM	45168D104	636	1,300	SH		SOLE		1,300	0	0
IHS MARKIT LTD	SHS	G47567105	958	9,896	SH		SOLE		8,651	0	1,245
ILLINOIS TOOL WKS INC	COM	452308109	297	1,340	SH		SOLE		1,070	0	270
INTEGRA LIFESCIENCES HLDGS C	COM NEW	457985208	345	5,000	SH		SOLE		5,000	0	0
INTEL CORP	COM	458140100	266	4,150	SH		SOLE		3,650	0	500
INTRICON CORP	COM	46121H109	1,820	70,975	SH		SOLE		70,975	0	0
INTUIT	COM	461202103	615	1,605	SH		SOLE		1,510	0	95
INVESCO EXCH TRADED FD TR II	PFD ETF	46138E511	170	11,350	SH		SOLE		11,350	0	0
ISHARES TR	PFD AND INCM SEC	464288687	212	5,531	SH		SOLE		5,531	0	0
JOHN BEAN TECHNOLOGIES CORP	COM	477839104	119,120	893,352	SH		SOLE		882,341	0	11,011
JOHNSON & JOHNSON	COM	478160104	565	3,440	SH		SOLE		2,730	0	710
JPMORGAN CHASE & CO	COM	46625H100	315	2,066	SH		SOLE		1,666	0	400
LAIRD SUPERFOOD INC	COM STK	50736T102	1,829	48,800	SH		SOLE		48,800	0	0
LCI INDS	COM	50189K103	11,849	89,574	SH		SOLE		81,319	0	8,255
LEMAITRE VASCULAR INC	COM	525558201	92,524	1,896,761	SH		SOLE		1,893,194	0	3,567
LIGAND PHARMACEUTICALS INC	COM NEW	53220K504	75,597	495,881	SH		SOLE		490,961	0	4,920
LIGHTSPEED POS INC	SUB VTG SHS	53227R106	7,625	121,390	SH		SOLE		109,810	0	11,580
LINDE PLC	SHS	G5494J103	747	2,665	SH		SOLE		2,165	0	500
MARKEL CORP	COM	570535104	646	567	SH		SOLE		417	0	150
MASIMO CORP	COM	574795100	251	1,095	SH		SOLE		1,095	0	0
MASTERCARD INCORPORATED	CL A	57636Q104	402	1,130	SH		SOLE		1,040	0	90
MERCURY SYS INC	COM	589378108	177,753	2,515,973	SH		SOLE		2,482,863	0	33,110
MERIT MED SYS INC	COM	589889104	139,606	2,331,437	SH		SOLE		2,311,355	0	20,082
MESA LABS INC	COM	59064R109	125,267	514,443	SH		SOLE		514,090	0	353
MICROSOFT CORP	COM	594918104	910	3,859	SH		SOLE		3,619	0	240
MODEL N INC	COM	607525102	147,648	4,190,977	SH		SOLE		4,188,147	0	2,830
NANOSTRING TECHNOLOGIES INC	COM	63009R109	1,386	21,100	SH		SOLE		21,100	0	0
NATIONAL RESH CORP	COM NEW	637372202	32,708	698,447	SH		SOLE		697,125	0	1,322
NEOGEN CORP	COM	640491106	166,978	1,878,477	SH		SOLE		1,857,278	0	21,199
NIKE INC	CL B	654106103	310	2,335	SH		SOLE		2,075	0	260
NOVANTA INC	COM	67000B104	146,359	1,109,706	SH		SOLE		1,103,361	0	6,345
NV5 GLOBAL INC	COM	62945V109	1,954	20,232	SH		SOLE		20,232	0	0
OMEGA FLEX INC	COM	682095104	86,085	545,258	SH		SOLE		544,339	0	919
OMNICELL COM	COM	68213N109	187,443	1,443,315	SH		SOLE		1,423,030	0	20,285
ORTHOPEDIATRICS CORP	COM	68752L100	2,044	41,920	SH		SOLE		41,920	0	0
PALOMAR HLDGS INC	COM	69753M105	1,597	23,825	SH		SOLE		23,825	0	0
PAYLOCITY HLDG CORP	COM	70438V106	125,047	695,365	SH		SOLE		694,100	0	1,265
PEPSICO INC	COM	713448108	205	1,450	SH		SOLE		1,050	0	400
POOL CORP	COM	73278L105	29,668	85,934	SH		SOLE		78,159	0	7,775
PROS HOLDINGS INC	COM	74346Y103	102,934	2,421,970	SH		SOLE		2,417,595	0	4,375
Q2 HLDGS INC	COM	74736L109	62,493	623,680	SH		SOLE		622,550	0	1,130
RBC BEARINGS INC	COM	75524B104	153,120	778,166	SH		SOLE		768,576	0	9,590
REALPAGE INC	COM	75606N109	95,343	1,093,378	SH		SOLE		1,091,293	0	2,085
REPLIGEN CORP	COM	759916109	199,731	1,027,370	SH		SOLE		1,014,910	0	12,460
ROGERS CORP	COM	775133101	81,362	432,293	SH		SOLE		431,548	0	745
ROLLINS INC	COM	775711104	25,677	745,987	SH		SOLE		680,400	0	65,587
ROPER TECHNOLOGIES INC	COM	776696106	625	1,550	SH		SOLE		1,320	0	230
SHOTSPOTTER INC	COM	82536T107	1,718	48,980	SH		SOLE		48,980	0	0
SIMPSON MFG INC	COM	829073105	142,391	1,372,711	SH		SOLE		1,359,964	0	12,747
SIMULATIONS PLUS INC	COM	829214105	45,722	722,985	SH		SOLE		721,705	0	1,280
SITEONE LANDSCAPE SUPPLY INC	COM	82982L103	207,813	1,217,134	SH		SOLE		1,202,074	0	15,060
SMUCKER J M CO	COM NEW	832696405	454	3,585	SH		SOLE		2,945	0	640
SPS COMM INC	COM	78463M107	178,693	1,799,344	SH		SOLE		1,781,584	0	17,760
STERIS PLC	SHS USD	G8473T100	228	1,195	SH		SOLE		1,195	0	0
TELEFLEX INCORPORATED	COM	879369106	19,161	46,121	SH		SOLE		41,911	0	4,210
TRACTOR SUPPLY CO	COM	892356106	1,143	6,455	SH		SOLE		5,805	0	650
TRANSCAT INC	COM	893529107	2,120	43,200	SH		SOLE		43,200	0	0
TRANSUNION	COM	89400J107	362	4,025	SH		SOLE		4,025	0	0
TREX CO INC	COM	89531P105	177,565	1,939,752	SH		SOLE		1,912,927	0	26,825
TYLER TECHNOLOGIES INC	COM	902252105	21,673	51,051	SH		SOLE		46,616	0	4,435
U S PHYSICAL THERAPY INC	COM	90337L108	1,424	13,675	SH		SOLE		13,675	0	0
VAIL RESORTS INC	COM	91879Q109	21,244	72,838	SH		SOLE		66,298	0	6,540
VEEVA SYS INC	CL A COM	922475108	614	2,350	SH		SOLE		2,350	0	0
VERICEL CORP	COM	92346J108	2,500	45,000	SH		SOLE		45,000	0	0
VERISK ANALYTICS INC	COM	92345Y106	1,113	6,297	SH		SOLE		6,057	0	240
VERIZON COMMUNICATIONS INC	COM	92343V104	211	3,622	SH		SOLE		3,622	0	0
VERTEX INC	CL A	92538J106	70,160	3,191,995	SH		SOLE		3,186,195	0	5,800
VOCERA COMMUNICATIONS INC	COM	92857F107	113,529	2,951,883	SH		SOLE		2,946,578	0	5,305
WASTE CONNECTIONS INC	COM	94106B101	585	5,415	SH		SOLE		4,965	0	450
WATSCO INC	COM	942622200	17,691	67,845	SH		SOLE		61,620	0	6,225
WD-40 CO	COM	929236107	73,237	239,195	SH		SOLE		238,758	0	437
WEST PHARMACEUTICAL SVSC INC	COM	955306105	27,561	97,811	SH		SOLE		89,136	0	8,675
WILLDAN GROUP INC	COM	96924N100	1,755	42,755	SH		SOLE		42,755	0	0
WORKIVA INC	COM CL A	98139A105	46,396	525,675	SH		SOLE		518,975	0	6,700
WP CAREY INC	COM	92936U109	202	2,850	SH		SOLE		2,850	0	0
XYLEM INC	COM	98419M100	488	4,640	SH		SOLE		4,280	0	360