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
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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
AMETEK, Inc. COM 031100100 144,104 1,736,825 SH   SOLE   1,586,880 0 149,945
ANSYS, Inc. COM 03662Q105 74,684 408,755 SH   SOLE   373,535 0 35,220
Advance Auto Parts, Inc. COM 00751Y106 118,263 693,505 SH   SOLE   634,115 0 59,390
Akamai Technologies, Inc. COM 00971T101 58,764 819,465 SH   SOLE   750,195 0 69,270
Altra Industrial Motion Corp. COM 02208R106 66,279 2,134,575 SH   SOLE   1,484,760 0 649,815
Aptargroup, Inc. COM 038336103 175,529 1,649,865 SH   SOLE   1,508,885 0 140,980
Arco Platform Ltd. Class A COM G04553106 455 14,100 SH   SOLE   14,100 0 0
Argo Group International Holdi COM G0464B107 111,672 1,580,413 SH   SOLE   1,099,943 0 480,470
Arthur J. Gallagher & Co. COM 363576109 177,645 2,274,585 SH   SOLE   2,076,730 0 197,855
Avanos Medical, Inc. COM 05350V106 102,517 2,401,987 SH   SOLE   1,668,972 0 733,015
B&G Foods, Inc. COM 05508R106 70,683 2,894,480 SH   SOLE   2,015,775 0 878,705
Barnes Group Inc. COM 067806109 65,613 1,276,260 SH   SOLE   886,845 0 389,415
Bio-Techne Corporation COM 09073M104 142,974 720,090 SH   SOLE   662,425 0 57,665
BlackLine, Inc. COM 09239B109 75,730 1,634,940 SH   SOLE   1,138,490 0 496,450
Blackbaud, Inc. COM 09227Q100 196,745 2,467,640 SH   SOLE   1,982,015 0 485,625
Boston Beer Company, Inc. Clas COM 100557107 40,810 138,465 SH   SOLE   96,160 0 42,305
Brown-Forman Corporation Class COM 115637209 109,436 2,073,430 SH   SOLE   1,906,530 0 166,900
Bryn Mawr Bank Corporation COM 117665109 33,775 934,825 SH   SOLE   654,305 0 280,520
CONMED Corporation COM 207410101 119,225 1,433,335 SH   SOLE   996,275 0 437,060
CVB Financial Corp. COM 126600105 46,929 2,229,415 SH   SOLE   1,548,310 0 681,105
Campbell Soup Company COM 134429109 73,965 1,939,815 SH   SOLE   1,770,340 0 169,475
Cantel Medical Corp. COM 138098108 112,931 1,688,315 SH   SOLE   1,399,695 0 288,620
Cardiovascular Systems, Inc. COM 141619106 82,937 2,145,285 SH   SOLE   1,489,055 0 656,230
Catalent Inc COM 148806102 158,849 3,913,500 SH   SOLE   3,255,325 0 658,175
Chase Corporation COM 16150R104 17,678 191,030 SH   SOLE   132,585 0 58,445
Commerce Bancshares, Inc. COM 200525103 72,125 1,242,242 SH   SOLE   1,133,671 0 108,571
Community Bank System, Inc. COM 203607106 48,188 806,220 SH   SOLE   559,820 0 246,400
Cooper Companies, Inc. COM 216648402 115,720 390,720 SH   SOLE   358,780 0 31,940
Covetrus, Inc. COM 22304C100 2,100 65,926 SH   SOLE   60,168 0 5,758
Cullen/Frost Bankers, Inc. COM 229899109 94,100 969,405 SH   SOLE   884,170 0 85,235
DENTSPLY SIRONA, Inc. COM 24906P109 143,355 2,890,795 SH   SOLE   2,639,185 0 251,610
Edwards Lifesciences Corporati COM 28176E108 139,269 727,900 SH   SOLE   665,480 0 62,420
Envestnet, Inc. COM 29404K106 50,111 766,335 SH   SOLE   534,070 0 232,265
Everest Re Group, Ltd. COM G3223R108 192,042 889,250 SH   SOLE   812,300 0 76,950
Evoqua Water Technologies Corp COM 30057T105 15,678 1,246,225 SH   SOLE   869,630 0 376,595
Flowers Foods, Inc. COM 343498101 134,170 6,293,150 SH   SOLE   5,745,145 0 548,005
Fortive Corp. COM 34959J108 170,701 2,034,815 SH   SOLE   1,896,990 0 137,825
Freshpet Inc COM 358039105 21,016 496,940 SH   SOLE   343,790 0 153,150
Gates Industrial Corporation p COM G39108108 81,834 5,706,660 SH   SOLE   5,208,970 0 497,690
German American Bancorp, Inc. COM 373865104 31,381 1,067,370 SH   SOLE   740,345 0 327,025
Guidewire Software, Inc. COM 40171V100 95,956 987,605 SH   SOLE   902,495 0 85,110
H.B. Fuller Company COM 359694106 78,224 1,608,215 SH   SOLE   1,116,635 0 491,580
Helen of Troy Limited COM G4388N106 39,545 341,025 SH   SOLE   237,380 0 103,645
Henry Schein, Inc. COM 806407102 37,210 619,030 SH   SOLE   565,760 0 53,270
Hormel Foods Corporation COM 440452100 115,734 2,585,655 SH   SOLE   2,362,245 0 223,410
Hostess Brands, Inc. Class A COM 44109J106 98,559 7,884,750 SH   SOLE   5,481,535 0 2,403,215
IDEX Corporation COM 45167R104 131,530 866,810 SH   SOLE   792,120 0 74,690
Independent Bank Corp. COM 453836108 77,545 957,230 SH   SOLE   665,165 0 292,065
Innospec Inc. COM 45768S105 77,305 927,470 SH   SOLE   647,275 0 280,195
Insulet Corporation COM 45784P101 58,746 617,790 SH   SOLE   430,335 0 187,455
Integra LifeSciences Holdings COM 457985208 305,001 5,473,820 SH   SOLE   4,492,450 0 981,370
International Flavors & Fragra COM 459506101 111,840 868,390 SH   SOLE   790,340 0 78,050
J & J Snack Foods Corp. COM 466032109 25,448 160,210 SH   SOLE   113,615 0 46,595
J.M. Smucker Company COM 832696405 146,565 1,258,070 SH   SOLE   1,150,890 0 107,180
James River Group Holdings Ltd COM G5005R107 38,166 952,240 SH   SOLE   660,650 0 291,590
John Bean Technologies Corpora COM 477839104 91,699 997,920 SH   SOLE   697,265 0 300,655
John Wiley & Sons, Inc. Class COM 968223206 173,169 3,916,080 SH   SOLE   3,131,900 0 784,180
Laboratory Corporation of Amer COM 50540R409 111,480 728,725 SH   SOLE   665,745 0 62,980
LogMeIn, Inc. COM 54142L109 121,720 1,519,600 SH   SOLE   1,214,215 0 305,385
Lydall, Inc. COM 550819106 24,316 1,036,470 SH   SOLE   720,565 0 315,905
MGP Ingredients, Inc. COM 55303J106 71,381 925,220 SH   SOLE   640,040 0 285,180
MSA Safety, Inc. COM 553498106 86,965 841,055 SH   SOLE   584,350 0 256,705
Masimo Corporation COM 574795100 110,032 795,720 SH   SOLE   656,455 0 139,265
McCormick & Company, Incorpora COM 579780206 101,403 673,195 SH   SOLE   614,765 0 58,430
Medidata Solutions, Inc. COM 58471A105 175,055 2,390,155 SH   SOLE   1,941,220 0 448,935
Molson Coors Brewing Company C COM 60871R209 109,116 1,829,265 SH   SOLE   1,679,335 0 149,930
Morningstar, Inc. COM 617700109 36,507 289,765 SH   SOLE   265,745 0 24,020
Navigators Group, Inc. COM 638904102 59,430 850,585 SH   SOLE   473,145 0 377,440
New Relic, Inc. COM 64829B100 170,048 1,722,880 SH   SOLE   1,351,445 0 371,435
Nordson Corporation COM 655663102 175,985 1,327,985 SH   SOLE   1,213,815 0 114,170
Northern Trust Corporation COM 665859104 155,817 1,723,450 SH   SOLE   1,573,795 0 149,655
Novanta Inc COM 67000B104 11,336 133,785 SH   SOLE   92,525 0 41,260
NuVasive, Inc. COM 670704105 129,205 2,275,140 SH   SOLE   1,823,695 0 451,445
Nutanix, Inc. Class A COM 67059N108 132,677 3,515,550 SH   SOLE   3,220,130 0 295,420
Okta, Inc. Class A COM 679295105 123,196 1,489,130 SH   SOLE   1,245,315 0 243,815
Omnicell, Inc. COM 68213N109 20,518 253,805 SH   SOLE   175,890 0 77,915
Palo Alto Networks, Inc. COM 697435105 198,273 816,340 SH   SOLE   746,675 0 69,665
Penumbra, Inc. COM 70975L107 27,902 189,795 SH   SOLE   131,440 0 58,355
Prestige Consumer Healthcare I COM 74112D101 62,480 2,088,940 SH   SOLE   1,452,900 0 636,040
Prosperity Bancshares, Inc.(R) COM 743606105 140,351 2,032,300 SH   SOLE   1,669,045 0 363,255
Pure Storage, Inc. Class A COM 74624M102 214,737 9,854,855 SH   SOLE   7,890,120 0 1,964,735
Q2 Holdings, Inc. COM 74736L109 88,007 1,270,670 SH   SOLE   881,045 0 389,625
Qualys, Inc. COM 74758T303 75,867 916,935 SH   SOLE   637,730 0 279,205
Red Hat, Inc. COM 756577102 73,803 403,955 SH   SOLE   369,275 0 34,680
Ritchie Bros. Auctioneers Inco COM 767744105 191,937 5,645,210 SH   SOLE   4,534,505 0 1,110,705
Rockwell Automation, Inc. COM 773903109 132,065 752,680 SH   SOLE   687,330 0 65,350
SVB Financial Group COM 78486Q101 56,363 253,475 SH   SOLE   232,035 0 21,440
Sally Beauty Holdings, Inc. COM 79546E104 155,466 8,444,630 SH   SOLE   6,825,610 0 1,619,020
Sensient Technologies Corporat COM 81725T100 122,843 1,812,105 SH   SOLE   1,259,835 0 552,270
ServiceNow, Inc. COM 81762P102 84,375 342,305 SH   SOLE   313,100 0 29,205
Simply Good Foods Co COM 82900L102 53,244 2,585,895 SH   SOLE   1,795,530 0 790,365
Splunk Inc. COM 848637104 195,136 1,566,100 SH   SOLE   1,432,495 0 133,605
Standex International Corporat COM 854231107 51,963 707,945 SH   SOLE   492,805 0 215,140
Stericycle, Inc. COM 858912108 83,142 1,527,793 SH   SOLE   1,395,298 0 132,495
Stock Yards Bancorp, Inc. COM 861025104 29,933 885,321 SH   SOLE   613,146 0 272,175
Supernus Pharmaceuticals, Inc. COM 868459108 54,680 1,560,515 SH   SOLE   1,085,830 0 474,685
Synopsys, Inc. COM 871607107 83,578 725,822 SH   SOLE   663,557 0 62,265
Tableau Software, Inc. Class A COM 87336U105 49,315 387,455 SH   SOLE   354,105 0 33,350
Teladoc Health, Inc. COM 87918A105 45,765 823,120 SH   SOLE   570,275 0 252,845
Tractor Supply Company COM 892356106 158,946 1,625,875 SH   SOLE   1,486,345 0 139,530
TreeHouse Foods, Inc. COM 89469A104 207,645 3,216,815 SH   SOLE   2,615,565 0 601,250
TriMas Corporation COM 896215209 32,240 1,066,495 SH   SOLE   741,725 0 324,770
UMB Financial Corporation COM 902788108 96,324 1,504,115 SH   SOLE   1,043,485 0 460,630
Ulta Beauty Inc COM 90384S303 173,845 498,510 SH   SOLE   455,985 0 42,525
Valvoline Inc. COM 92047W101 76,052 4,097,605 SH   SOLE   3,733,515 0 364,090
Veeva Systems Inc Class A COM 922475108 150,625 1,187,335 SH   SOLE   1,084,215 0 103,120
Verisk Analytics Inc COM 92345Y106 155,966 1,172,675 SH   SOLE   1,071,375 0 101,300
Washington Trust Bancorp, Inc. COM 940610108 36,091 749,545 SH   SOLE   519,005 0 230,540
Waters Corporation COM 941848103 211,090 838,625 SH   SOLE   764,305 0 74,320
Welbilt Inc COM 949090104 103,934 6,345,165 SH   SOLE   4,398,550 0 1,946,615
West Pharmaceutical Services, COM 955306105 65,528 594,625 SH   SOLE   543,835 0 50,790
Wolverine World Wide, Inc. COM 978097103 68,755 1,924,285 SH   SOLE   1,339,110 0 585,175
Woodward, Inc. COM 980745103 39,659 417,950 SH   SOLE   288,710 0 129,240
Workday, Inc. Class A COM 98138H101 145,257 753,210 SH   SOLE   689,055 0 64,155
Yext, Inc. COM 98585N106 81,938 3,748,305 SH   SOLE   2,601,350 0 1,146,955
e.l.f. Beauty, Inc. COM 26856L103 37,158 3,505,480 SH   SOLE   2,429,590 0 1,075,890
Alibaba Group Holding Ltd. Spo ADR 01609W102 266 1,460 SH   SOLE   1,460 0 0
Ambev SA Sponsored ADR ADR 02319V103 58 13,600 SH   SOLE   13,600 0 0
Noah Holdings Ltd. Sponsored A ADR 65487X102 607 12,520 SH   SOLE   12,520 0 0
Talend SA Sponsored ADR ADR 874224207 36,416 720,105 SH   SOLE   515,080 0 205,025