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
OMNICELL INC	COM	68213N109	106,202	1,503,855	SH		SOLE		1,488,275	0	15,580
SPS COMMERCE INC	COM	78463M107	127,172	1,692,923	SH		SOLE		1,679,183	0	13,740
INTERNATIONAL BUSINESS MACHS	COM	459200101	270	2,235	SH		SOLE		2,235	0	0
CONSTRUCTION PARTNERS INC	COM CL A	21044C107	82,330	4,635,722	SH		SOLE		4,584,029	0	51,693
BIOLIFE SOLUTIONS INC	COM NEW	09062W204	866	52,985	SH		SOLE		52,985	0	0
U S PHYSICAL THERAPY INC	COM	90337L108	859	10,605	SH		SOLE		10,605	0	0
IDEXX LABS INC	COM	45168D104	454	1,375	SH		SOLE		1,375	0	0
GRAND CANYON ED INC	COM	38526M106	81,153	896,421	SH		SOLE		888,631	0	7,790
ROGERS CORP	COM	775133101	50,988	409,210	SH		SOLE		408,465	0	745
GUIDEWIRE SOFTWARE INC	COM	40171V100	15,050	135,772	SH		SOLE		124,222	0	11,550
TRANSUNION	COM	89400J107	239	2,750	SH		SOLE		2,750	0	0
COPART INC	COM	217204106	9,149	109,872	SH		SOLE		100,997	0	8,875
ALPHABET INC	CAP STK CL A	02079K305	291	205	SH		SOLE		145	0	60
VEEVA SYS INC	CL A COM	922475108	574	2,450	SH		SOLE		2,450	0	0
GARTNER INC	COM	366651107	6,461	53,253	SH		SOLE		48,505	0	4,748
PAYPAL HLDGS INC	COM	70450Y103	206	1,180	SH		SOLE		450	0	730
ABBOTT LABS	COM	002824100	822	8,990	SH		SOLE		8,990	0	0
ROPER TECHNOLOGIES INC	COM	776696106	538	1,385	SH		SOLE		1,115	0	270
NV5 GLOBAL INC	COM	62945V109	1,204	23,680	SH		SOLE		23,680	0	0
DANAHER CORPORATION	COM	235851102	300	1,695	SH		SOLE		1,255	0	440
WD-40 CO	COM	929236107	53,879	271,704	SH		SOLE		271,189	0	515
HELIOS TECHNOLOGIES INC	COM	42328H109	49,237	1,321,801	SH		SOLE		1,319,357	0	2,444
SITEONE LANDSCAPE SUPPLY INC	COM	82982L103	128,525	1,127,713	SH		SOLE		1,114,428	0	13,285
CODEXIS INC	COM	192005106	1,242	108,985	SH		SOLE		108,985	0	0
RBC BEARINGS INC	COM	75524B104	85,234	635,886	SH		SOLE		628,626	0	7,260
XYLEM INC	COM	98419M100	382	5,880	SH		SOLE		4,660	0	1,220
DORMAN PRODUCTS INC	COM	258278100	56,971	849,428	SH		SOLE		847,798	0	1,630
VERIZON COMMUNICATIONS INC	COM	92343V104	208	3,773	SH		SOLE		3,773	0	0
DOUGLAS DYNAMICS INC	COM	25960R105	91,084	2,593,495	SH		SOLE		2,563,225	0	30,270
MARKEL CORP	COM	570535104	784	849	SH		SOLE		699	0	150
LEMAITRE VASCULAR INC	COM	525558201	47,596	1,802,869	SH		SOLE		1,799,363	0	3,506
COGNEX CORP	COM	192422103	10,642	178,191	SH		SOLE		162,956	0	15,235
CHEVRON CORP NEW	COM	166764100	265	2,974	SH		SOLE		2,974	0	0
MODEL N INC	COM	607525102	45,498	1,308,920	SH		SOLE		1,306,570	0	2,350
ANSYS INC	COM	03662Q105	12,528	42,943	SH		SOLE		39,453	0	3,490
TYLER TECHNOLOGIES INC	COM	902252105	14,720	42,434	SH		SOLE		39,005	0	3,429
WASTE CONNECTIONS INC	COM	94106B101	333	3,550	SH		SOLE		3,060	0	490
HEICO CORP NEW	CL A	422806208	13,250	163,103	SH		SOLE		149,918	0	13,185
NANOSTRING TECHNOLOGIES INC	COM	63009R109	816	27,795	SH		SOLE		27,795	0	0
ALBANY INTL CORP	CL A	012348108	50,300	856,750	SH		SOLE		855,088	0	1,662
PROS HOLDINGS INC	COM	74346Y103	87,150	1,961,503	SH		SOLE		1,957,778	0	3,725
FASTENAL CO	COM	311900104	1,188	27,727	SH		SOLE		23,627	0	4,100
TELEFLEX INCORPORATED	COM	879369106	13,181	36,214	SH		SOLE		33,219	0	2,995
VERISK ANALYTICS INC	COM	92345Y106	1,113	6,542	SH		SOLE		6,162	0	380
MERCK & CO. INC	COM	58933Y105	514	6,650	SH		SOLE		6,650	0	0
INTUIT	COM	461202103	535	1,805	SH		SOLE		1,585	0	220
EVI INDUSTRIES INC	COM	26929N102	21,000	967,300	SH		SOLE		945,440	0	21,860
MESA LABS INC	COM	59064R109	103,717	478,399	SH		SOLE		478,047	0	352
KIMBERLY CLARK CORP	COM	494368103	601	4,250	SH		SOLE		4,250	0	0
AAON INC	COM PAR $0.004	000360206	91,382	1,683,227	SH		SOLE		1,679,990	0	3,237
BLACKBAUD INC	COM	09227Q100	40,748	713,877	SH		SOLE		712,423	0	1,454
FORTINET INC	COM	34959E109	839	6,113	SH		SOLE		6,113	0	0
IHS MARKIT LTD	SHS	G47567105	1,540	20,396	SH		SOLE		17,958	0	2,438
WATSCO INC	COM	942622200	9,893	55,674	SH		SOLE		50,502	0	5,172
GRACO INC	COM	384109104	10,730	223,595	SH		SOLE		205,775	0	17,820
CANTEL MED CORP	COM	138098108	33,719	762,359	SH		SOLE		760,923	0	1,436
FIRSTSERVICE CORP NEW	COM	33767E202	112,885	1,120,444	SH		SOLE		1,109,439	0	11,005
CAREDX INC	COM	14167L103	1,612	45,505	SH		SOLE		45,505	0	0
DIGI INTL INC	COM	253798102	818	70,175	SH		SOLE		70,175	0	0
SHOTSPOTTER INC	COM	82536T107	1,182	46,905	SH		SOLE		46,905	0	0
ALTAIR ENGR INC	COM CL A	021369103	84,554	2,127,142	SH		SOLE		2,108,727	0	18,415
PAYLOCITY HLDG CORP	COM	70438V106	120,573	826,468	SH		SOLE		824,883	0	1,585
APTARGROUP INC	COM	038336103	5,848	52,220	SH		SOLE		47,830	0	4,390
TRIMBLE INC	COM	896239100	563	13,029	SH		SOLE		13,029	0	0
NEOGEN CORP	COM	640491106	134,864	1,737,934	SH		SOLE		1,719,640	0	18,294
JPMORGAN CHASE & CO	COM	46625H100	258	2,741	SH		SOLE		2,341	0	400
TRANSCAT INC	COM	893529107	965	37,300	SH		SOLE		37,300	0	0
DESCARTES SYS GROUP INC	COM	249906108	150,343	2,842,015	SH		SOLE		2,813,400	0	28,615
COSTAR GROUP INC	COM	22160N109	1,141	1,605	SH		SOLE		1,605	0	0
VOCERA COMMUNICATIONS INC	COM	92857F107	66,830	3,152,382	SH		SOLE		3,150,087	0	2,295
MERIT MED SYS INC	COM	589889104	89,709	1,965,137	SH		SOLE		1,949,560	0	15,577
HEALTH CATALYST INC	COM	42225T107	7,251	248,567	SH		SOLE		228,752	0	19,815
PFIZER INC	COM	717081103	559	17,108	SH		SOLE		17,108	0	0
FACTSET RESH SYS INC	COM	303075105	687	2,091	SH		SOLE		2,091	0	0
PALOMAR HLDGS INC	COM	69753M105	1,342	15,650	SH		SOLE		15,650	0	0
FAIR ISAAC CORP	COM	303250104	13,860	33,155	SH		SOLE		30,260	0	2,895
COSTCO WHSL CORP NEW	COM	22160K105	713	2,350	SH		SOLE		1,815	0	535
IPG PHOTONICS CORP	COM	44980X109	445	2,775	SH		SOLE		2,775	0	0
3M CO	COM	88579Y101	683	4,380	SH		SOLE		3,860	0	520
TWIST BIOSCIENCE CORP	COM	90184D100	1,606	35,450	SH		SOLE		35,450	0	0
IAA INC	COM	449253103	7,054	182,893	SH		SOLE		167,913	0	14,980
ESCO TECHNOLOGIES INC	COM	296315104	77,449	916,234	SH		SOLE		914,452	0	1,782
BOTTOMLINE TECH DEL INC	COM	101388106	93,025	1,832,284	SH		SOLE		1,817,624	0	14,660
NOVANTA INC	COM	67000B104	107,020	1,002,339	SH		SOLE		1,000,394	0	1,945
APPLE INC	COM	037833100	905	2,480	SH		SOLE		1,560	0	920
INARI MED INC	COM	45332Y109	782	16,150	SH		SOLE		16,150	0	0
LCI INDS	COM	50189K103	8,440	73,408	SH		SOLE		66,671	0	6,737
ESSENTIAL UTILS INC	COM	29670G102	257	6,087	SH		SOLE		5,387	0	700
LIGAND PHARMACEUTICALS INC	COM NEW	53220K504	75,249	672,768	SH		SOLE		666,101	0	6,667
ROLLINS INC	COM	775711104	19,056	449,548	SH		SOLE		413,841	0	35,707
VAIL RESORTS INC	COM	91879Q109	10,587	58,122	SH		SOLE		53,427	0	4,695
PROCTER AND GAMBLE CO	COM	742718109	471	3,940	SH		SOLE		3,740	0	200
VERICEL CORP	COM	92346J108	1,394	100,850	SH		SOLE		100,850	0	0
MASTERCARD INCORPORATED	CL A	57636Q104	359	1,215	SH		SOLE		1,065	0	150
TREX CO INC	COM	89531P105	142,581	1,096,185	SH		SOLE		1,084,730	0	11,455
SMUCKER J M CO	COM NEW	832696405	434	4,105	SH		SOLE		3,325	0	780
AMGEN INC	COM	031162100	314	1,330	SH		SOLE		1,330	0	0
CRYOPORT INC	COM PAR $0.001	229050307	1,410	46,600	SH		SOLE		46,600	0	0
REPLIGEN CORP	COM	759916109	137,070	1,108,894	SH		SOLE		1,098,049	0	10,845
ACI WORLDWIDE INC	COM	004498101	77,427	2,868,721	SH		SOLE		2,849,121	0	19,600
NATIONAL RESH CORP	COM NEW	637372202	37,613	646,164	SH		SOLE		644,842	0	1,322
HOME DEPOT INC	COM	437076102	301	1,200	SH		SOLE		1,200	0	0
JOHN BEAN TECHNOLOGIES CORP	COM	477839104	71,529	831,536	SH		SOLE		822,811	0	8,725
GENERAC HLDGS INC	COM	368736104	5,633	46,195	SH		SOLE		42,275	0	3,920
ABBVIE INC	COM	00287Y109	779	7,935	SH		SOLE		7,935	0	0
NIKE INC	CL B	654106103	282	2,875	SH		SOLE		2,255	0	620
OMEGA FLEX INC	COM	682095104	44,229	418,046	SH		SOLE		417,239	0	807
GARMIN LTD	SHS	H2906T109	446	4,570	SH		SOLE		3,870	0	700
EXXON MOBIL CORP	COM	30231G102	834	18,654	SH		SOLE		18,504	0	150
WEST PHARMACEUTICAL SVSC INC	COM	955306105	17,767	78,210	SH		SOLE		71,982	0	6,228
DOLBY LABORATORIES INC	COM CL A	25659T107	419	6,368	SH		SOLE		5,868	0	500
HENRY JACK & ASSOC INC	COM	426281101	15,536	84,421	SH		SOLE		77,276	0	7,145
SIMULATIONS PLUS INC	COM	829214105	1,396	23,330	SH		SOLE		23,330	0	0
BLACKLINE INC	COM	09239B109	109,729	1,323,477	SH		SOLE		1,321,052	0	2,425
PLURALSIGHT INC	COM CL A	72941B106	7,654	424,068	SH		SOLE		390,873	0	33,195
AXON ENTERPRISE INC	COM	05464C101	112,339	1,144,801	SH		SOLE		1,131,116	0	13,685
Q2 HLDGS INC	COM	74736L109	24,196	282,040	SH		SOLE		281,370	0	670
BRIGHT HORIZONS FAM SOL IN D	COM	109194100	13,506	115,239	SH		SOLE		105,834	0	9,405
JOHNSON & JOHNSON	COM	478160104	562	3,996	SH		SOLE		3,126	0	870
WP CAREY INC	COM	92936U109	308	4,550	SH		SOLE		3,550	0	1,000
ALIGN TECHNOLOGY INC	COM	016255101	604	2,202	SH		SOLE		2,092	0	110
FIVE9 INC	COM	338307101	57,386	518,535	SH		SOLE		517,500	0	1,035
FOX FACTORY HLDG CORP	COM	35138V102	137,454	1,663,891	SH		SOLE		1,660,641	0	3,250
PROTO LABS INC	COM	743713109	50,262	446,896	SH		SOLE		446,046	0	850
CASELLA WASTE SYS INC	CL A	147448104	106,663	2,046,495	SH		SOLE		2,024,515	0	21,980
ORTHOPEDIATRICS CORP	COM	68752L100	1,209	27,620	SH		SOLE		27,620	0	0
MERCURY SYS INC	COM	589378108	127,801	1,624,728	SH		SOLE		1,606,408	0	18,320
INTEGRA LIFESCIENCES HLDGS C	COM NEW	457985208	235	5,000	SH		SOLE		5,000	0	0
ALPHABET INC	CAP STK CL C	02079K107	290	205	SH		SOLE		145	0	60
INTRICON CORP	COM	46121H109	765	56,550	SH		SOLE		56,550	0	0
REALPAGE INC	COM	75606N109	46,203	710,705	SH		SOLE		704,625	0	6,080
ECOLAB INC	COM	278865100	262	1,315	SH		SOLE		735	0	580
LINDE PLC	SHS	G5494J103	591	2,785	SH		SOLE		2,165	0	620
SIMPSON MANUFACTURING CO INC	COM	829073105	119,209	1,413,100	SH		SOLE		1,401,889	0	11,211
BALCHEM CORP	COM	057665200	84,297	888,650	SH		SOLE		880,862	0	7,788
TRACTOR SUPPLY CO	COM	892356106	884	6,705	SH		SOLE		5,855	0	850
COLLECTORS UNIVERSE INC	COM NEW	19421R200	989	28,850	SH		SOLE		28,850	0	0
HEXCEL CORP NEW	COM	428291108	217	4,793	SH		SOLE		4,793	0	0
UNION PAC CORP	COM	907818108	901	5,332	SH		SOLE		5,332	0	0
WILLDAN GROUP INC	COM	96924N100	1,175	46,980	SH		SOLE		46,980	0	0
EXPONENT INC	COM	30214U102	146,259	1,807,230	SH		SOLE		1,789,397	0	17,833
ADOBE INC	COM	00724F101	544	1,250	SH		SOLE		1,080	0	170
MICROSOFT CORP	COM	594918104	946	4,649	SH		SOLE		4,039	0	610
INTEL CORP	COM	458140100	413	6,900	SH		SOLE		6,400	0	500
BIO-TECHNE CORP	COM	09073M104	95,885	363,104	SH		SOLE		358,591	0	4,513
POOL CORPORATION	COM	73278L105	19,142	70,408	SH		SOLE		64,328	0	6,080