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 162,375 1,787,480 SH   SOLE   1,645,035 0 142,445
ANSYS, Inc. COM 03662Q105 64,226 313,575 SH   SOLE   288,955 0 24,620
Advance Auto Parts, Inc. COM 00751Y106 140,866 913,885 SH   SOLE   842,010 0 71,875
Akamai Technologies, Inc. COM 00971T101 74,632 931,265 SH   SOLE   854,070 0 77,195
Altra Industrial Motion Corp. COM 02208R106 77,580 2,162,215 SH   SOLE   1,521,330 0 640,885
Aptargroup, Inc. COM 038336103 201,641 1,621,690 SH   SOLE   1,494,670 0 127,020
Arco Platform Ltd. Class A COM G04553106 589 13,455 SH   SOLE   13,455 0 0
Argo Group International Holdi COM G0464B107 103,667 1,399,953 SH   SOLE   984,913 0 415,040
Arthur J. Gallagher & Co. COM 363576109 206,673 2,359,550 SH   SOLE   2,172,695 0 186,855
Avanos Medical, Inc. COM 05350V106 107,086 2,455,532 SH   SOLE   1,730,067 0 725,465
B&G Foods, Inc. COM 05508R106 61,294 2,946,820 SH   SOLE   2,081,740 0 865,080
Barnes Group Inc. COM 067806109 76,901 1,364,950 SH   SOLE   962,115 0 402,835
Bio-Techne Corporation COM 09073M104 151,613 727,195 SH   SOLE   672,990 0 54,205
BlackLine, Inc. COM 09239B109 97,318 1,818,680 SH   SOLE   1,284,120 0 534,560
Blackbaud, Inc. COM 09227Q100 224,361 2,686,956 SH   SOLE   2,200,656 0 486,300
Boston Beer Company, Inc. Clas COM 100557107 53,878 142,625 SH   SOLE   101,020 0 41,605
Brown-Forman Corporation Class COM 115637209 116,415 2,100,220 SH   SOLE   1,943,285 0 156,935
Bryn Mawr Bank Corporation COM 117665109 35,403 948,625 SH   SOLE   672,705 0 275,920
CONMED Corporation COM 207410101 124,278 1,452,360 SH   SOLE   1,022,825 0 429,535
CSW Industrials, Inc. COM 126402106 7,549 110,770 SH   SOLE   78,830 0 31,940
CVB Financial Corp. COM 126600105 47,667 2,266,605 SH   SOLE   1,596,600 0 670,005
Campbell Soup Company COM 134429109 87,889 2,193,375 SH   SOLE   2,013,565 0 179,810
Cantel Medical Corp. COM 138098108 160,993 1,996,447 SH   SOLE   1,673,061 0 323,386
Cardiovascular Systems, Inc. COM 141619106 93,343 2,174,310 SH   SOLE   1,533,860 0 640,450
Catalent Inc COM 148806102 219,954 4,057,445 SH   SOLE   3,416,070 0 641,375
Chase Corporation COM 16150R104 23,475 218,090 SH   SOLE   153,155 0 64,935
Commerce Bancshares, Inc. COM 200525103 76,773 1,286,840 SH   SOLE   1,181,579 0 105,261
Community Bank System, Inc. COM 203607106 53,885 818,430 SH   SOLE   575,730 0 242,700
Cooper Companies, Inc. COM 216648402 139,407 413,805 SH   SOLE   383,365 0 30,440
Covetrus, Inc. COM 22304C100 1,613 65,926 SH   SOLE   60,168 0 5,758
Cullen/Frost Bankers, Inc. COM 229899109 102,184 1,091,005 SH   SOLE   1,003,105 0 87,900
DENTSPLY SIRONA, Inc. COM 24906P109 174,540 2,990,740 SH   SOLE   2,752,830 0 237,910
Edwards Lifesciences Corporati COM 28176E108 152,084 823,235 SH   SOLE   757,205 0 66,030
Envestnet, Inc. COM 29404K106 52,604 769,400 SH   SOLE   539,435 0 229,965
Everest Re Group, Ltd. COM G3223R108 240,726 973,890 SH   SOLE   897,245 0 76,645
Evoqua Water Technologies Corp COM 30057T105 18,297 1,284,910 SH   SOLE   900,415 0 384,495
Flowers Foods, Inc. COM 343498101 156,262 6,715,160 SH   SOLE   6,187,565 0 527,595
Fortive Corp. COM 34959J108 172,070 2,110,770 SH   SOLE   1,982,270 0 128,500
Freshpet Inc COM 358039105 32,764 719,925 SH   SOLE   508,615 0 211,310
Gates Industrial Corporation p COM G39108108 68,165 5,974,145 SH   SOLE   5,471,885 0 502,260
German American Bancorp, Inc. COM 373865104 32,739 1,086,940 SH   SOLE   765,215 0 321,725
Guidewire Software, Inc. COM 40171V100 103,832 1,024,190 SH   SOLE   942,330 0 81,860
H.B. Fuller Company COM 359694106 73,102 1,575,480 SH   SOLE   1,109,085 0 466,395
Helen of Troy Limited COM G4388N106 44,845 343,400 SH   SOLE   241,605 0 101,795
Hormel Foods Corporation COM 440452100 121,671 3,001,255 SH   SOLE   2,754,620 0 246,635
Hostess Brands, Inc. Class A COM 44109J106 120,416 8,339,035 SH   SOLE   5,875,240 0 2,463,795
IDEX Corporation COM 45167R104 150,576 874,730 SH   SOLE   805,015 0 69,715
Independent Bank Corp. COM 453836108 78,904 1,036,165 SH   SOLE   728,675 0 307,490
Innospec Inc. COM 45768S105 70,988 778,035 SH   SOLE   548,220 0 229,815
Insulet Corporation COM 45784P101 61,249 513,060 SH   SOLE   360,910 0 152,150
Integra LifeSciences Holdings COM 457985208 321,709 5,760,230 SH   SOLE   4,767,195 0 993,035
International Flavors & Fragra COM 459506101 130,794 901,465 SH   SOLE   826,755 0 74,710
J & J Snack Foods Corp. COM 466032109 25,728 159,850 SH   SOLE   114,100 0 45,750
J.M. Smucker Company COM 832696405 147,881 1,283,800 SH   SOLE   1,182,305 0 101,495
James River Group Holdings Ltd COM G5005R107 45,270 965,240 SH   SOLE   678,550 0 286,690
John Bean Technologies Corpora COM 477839104 122,068 1,007,740 SH   SOLE   712,635 0 295,105
John Wiley & Sons, Inc. Class COM 968223206 185,464 4,044,125 SH   SOLE   3,273,430 0 770,695
Laboratory Corporation of Amer COM 50540R409 130,388 754,125 SH   SOLE   693,920 0 60,205
Lancaster Colony Corporation COM 513847103 32,496 218,680 SH   SOLE   154,480 0 64,200
LogMeIn, Inc. COM 54142L109 116,150 1,576,415 SH   SOLE   1,277,405 0 299,010
Lydall, Inc. COM 550819106 21,348 1,056,810 SH   SOLE   746,305 0 310,505
MGP Ingredients, Inc. COM 55303J106 75,133 1,133,055 SH   SOLE   795,980 0 337,075
MSA Safety, Inc. COM 553498106 94,824 899,740 SH   SOLE   633,120 0 266,620
Masimo Corporation COM 574795100 122,512 823,225 SH   SOLE   687,855 0 135,370
McCormick & Company, Incorpora COM 579780206 89,622 578,170 SH   SOLE   533,470 0 44,700
Medidata Solutions, Inc. COM 58471A105 186,912 2,065,100 SH   SOLE   1,676,125 0 388,975
Molson Coors Brewing Company C COM 60871R209 106,093 1,894,525 SH   SOLE   1,753,395 0 141,130
Morningstar, Inc. COM 617700109 42,917 296,715 SH   SOLE   273,395 0 23,320
New Relic, Inc. COM 64829B100 169,266 1,956,605 SH   SOLE   1,568,535 0 388,070
Nordson Corporation COM 655663102 193,797 1,371,435 SH   SOLE   1,259,435 0 112,000
Northern Trust Corporation COM 665859104 160,807 1,786,745 SH   SOLE   1,642,465 0 144,280
NuVasive, Inc. COM 670704105 88,956 1,519,570 SH   SOLE   1,191,825 0 327,745
Nutanix, Inc. Class A COM 67059N108 118,299 4,560,470 SH   SOLE   4,203,375 0 357,095
Okta, Inc. Class A COM 679295105 122,434 991,285 SH   SOLE   874,825 0 116,460
Omnicell, Inc. COM 68213N109 8,697 101,095 SH   SOLE   69,495 0 31,600
Palo Alto Networks, Inc. COM 697435105 157,262 771,800 SH   SOLE   709,815 0 61,985
Penumbra, Inc. COM 70975L107 30,132 188,325 SH   SOLE   131,745 0 56,580
Prestige Consumer Healthcare I COM 74112D101 66,889 2,111,405 SH   SOLE   1,485,920 0 625,485
Prosperity Bancshares, Inc.(R) COM 743606105 156,895 2,375,400 SH   SOLE   1,977,665 0 397,735
Pure Storage, Inc. Class A COM 74624M102 190,603 12,482,210 SH   SOLE   10,124,675 0 2,357,535
Q2 Holdings, Inc. COM 74736L109 107,934 1,413,490 SH   SOLE   998,355 0 415,135
Qualys, Inc. COM 74758T303 54,354 624,185 SH   SOLE   439,010 0 185,175
Ritchie Bros. Auctioneers Inco COM 767744105 191,485 5,764,155 SH   SOLE   4,675,240 0 1,088,915
Rockwell Automation, Inc. COM 773903109 149,707 913,795 SH   SOLE   842,395 0 71,400
SVB Financial Group COM 78486Q101 83,654 372,475 SH   SOLE   342,715 0 29,760
Sally Beauty Holdings, Inc. COM 79546E104 118,421 8,877,105 SH   SOLE   7,218,065 0 1,659,040
Sensient Technologies Corporat COM 81725T100 135,145 1,839,205 SH   SOLE   1,296,455 0 542,750
ServiceNow, Inc. COM 81762P102 97,199 354,005 SH   SOLE   326,300 0 27,705
Simply Good Foods Co COM 82900L102 63,145 2,622,310 SH   SOLE   1,847,170 0 775,140
Splunk Inc. COM 848637104 193,065 1,535,305 SH   SOLE   1,413,380 0 121,925
Standex International Corporat COM 854231107 52,785 721,695 SH   SOLE   510,175 0 211,520
Stericycle, Inc. COM 858912108 75,872 1,588,943 SH   SOLE   1,460,548 0 128,395
Stock Yards Bancorp, Inc. COM 861025104 32,624 902,456 SH   SOLE   632,281 0 270,175
Supernus Pharmaceuticals, Inc. COM 868459108 52,485 1,586,125 SH   SOLE   1,119,340 0 466,785
Synopsys, Inc. COM 871607107 85,656 665,597 SH   SOLE   613,102 0 52,495
Tableau Software, Inc. Class A COM 87336U105 57,439 345,975 SH   SOLE   318,125 0 27,850
Teladoc Health, Inc. COM 87918A105 60,627 912,915 SH   SOLE   644,510 0 268,405
Tractor Supply Company COM 892356106 166,749 1,532,620 SH   SOLE   1,411,420 0 121,200
TreeHouse Foods, Inc. COM 89469A104 180,448 3,335,450 SH   SOLE   2,730,895 0 604,555
TriMas Corporation COM 896215209 33,429 1,079,385 SH   SOLE   759,915 0 319,470
UMB Financial Corporation COM 902788108 100,551 1,527,670 SH   SOLE   1,074,865 0 452,805
Ulta Beauty Inc COM 90384S303 154,631 445,765 SH   SOLE   410,330 0 35,435
Valvoline Inc. COM 92047W101 83,139 4,256,990 SH   SOLE   3,904,800 0 352,190
Veeva Systems Inc Class A COM 922475108 155,115 956,850 SH   SOLE   880,280 0 76,570
Verisk Analytics Inc COM 92345Y106 140,046 956,205 SH   SOLE   879,885 0 76,320
Washington Trust Bancorp, Inc. COM 940610108 39,810 762,940 SH   SOLE   536,200 0 226,740
Waters Corporation COM 941848103 191,987 891,965 SH   SOLE   820,130 0 71,835
Welbilt Inc COM 949090104 107,933 6,463,080 SH   SOLE   4,544,455 0 1,918,625
West Pharmaceutical Services, COM 955306105 75,378 602,300 SH   SOLE   552,410 0 49,890
Wolverine World Wide, Inc. COM 978097103 66,343 2,408,955 SH   SOLE   1,696,720 0 712,235
Workday, Inc. Class A COM 98138H101 158,352 770,270 SH   SOLE   709,665 0 60,605
Yext, Inc. COM 98585N106 91,519 4,555,440 SH   SOLE   3,219,850 0 1,335,590
e.l.f. Beauty, Inc. COM 26856L103 48,455 3,436,560 SH   SOLE   2,422,955 0 1,013,605
Alibaba Group Holding Ltd. Spo ADR 01609W102 247 1,460 SH   SOLE   1,460 0 0
Ambev SA Sponsored ADR ADR 02319V103 64 13,600 SH   SOLE   13,600 0 0
Noah Holdings Ltd. Sponsored A ADR 65487X102 787 18,485 SH   SOLE   18,485 0 0
Talend SA Sponsored ADR ADR 874224207 25,229 653,770 SH   SOLE   475,675 0 178,095