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 208,914 2,275,260 SH   SOLE   2,096,145 0 179,115
ANSYS, Inc. COM 03662Q105 60,507 273,340 SH   SOLE   251,840 0 21,500
Advance Auto Parts, Inc. COM 00751Y106 190,270 1,150,365 SH   SOLE   1,060,830 0 89,535
Akamai Technologies, Inc. COM 00971T101 87,903 961,955 SH   SOLE   883,610 0 78,345
Altra Industrial Motion Corp. COM 02208R106 68,847 2,485,895 SH   SOLE   1,838,175 0 647,720
Aptargroup, Inc. COM 038336103 158,217 1,335,725 SH   SOLE   1,231,675 0 104,050
Arco Platform Ltd. Class A COM G04553106 792 15,615 SH   SOLE   15,615 0 0
Argo Group International Holdi COM G0464B107 103,929 1,479,623 SH   SOLE   1,051,358 0 428,265
Arthur J. Gallagher & Co. COM 363576109 196,843 2,197,645 SH   SOLE   2,026,470 0 171,175
AtriCure, Inc. COM 04963C209 16,845 675,435 SH   SOLE   478,250 0 197,185
Avanos Medical, Inc. COM 05350V106 96,721 2,581,982 SH   SOLE   1,903,682 0 678,300
B&G Foods, Inc. COM 05508R106 53,461 2,827,110 SH   SOLE   2,137,030 0 690,080
Barnes Group Inc. COM 067806109 83,068 1,611,720 SH   SOLE   1,145,395 0 466,325
Bio-Techne Corporation COM 09073M104 162,770 831,860 SH   SOLE   771,675 0 60,185
BlackLine, Inc. COM 09239B109 88,901 1,859,465 SH   SOLE   1,324,905 0 534,560
Blackbaud, Inc. COM 09227Q100 235,053 2,601,870 SH   SOLE   2,164,385 0 437,485
Boston Beer Company, Inc. Clas COM 100557107 31,224 85,760 SH   SOLE   60,375 0 25,385
Brown-Forman Corporation Class COM 115637209 116,848 1,861,235 SH   SOLE   1,723,790 0 137,445
Bryn Mawr Bank Corporation COM 117665109 35,155 962,880 SH   SOLE   686,960 0 275,920
CONMED Corporation COM 207410101 125,999 1,310,440 SH   SOLE   927,790 0 382,650
CSW Industrials, Inc. COM 126402106 19,246 278,810 SH   SOLE   200,030 0 78,780
CVB Financial Corp. COM 126600105 48,202 2,309,635 SH   SOLE   1,639,630 0 670,005
Campbell Soup Company COM 134429109 104,961 2,237,030 SH   SOLE   2,054,630 0 182,400
Cantel Medical Corp. COM 138098108 183,649 2,455,202 SH   SOLE   2,070,612 0 384,590
Cardiovascular Systems, Inc. COM 141619106 91,599 1,927,580 SH   SOLE   1,369,205 0 558,375
Catalent Inc COM 148806102 196,925 4,131,880 SH   SOLE   3,487,595 0 644,285
Chase Corporation COM 16150R104 24,230 221,500 SH   SOLE   156,565 0 64,935
Commerce Bancshares, Inc. COM 200525103 80,636 1,329,534 SH   SOLE   1,221,453 0 108,081
Community Bank System, Inc. COM 203607106 56,933 922,890 SH   SOLE   654,830 0 268,060
Cooper Companies, Inc. COM 216648402 139,205 468,705 SH   SOLE   434,665 0 34,040
Cullen/Frost Bankers, Inc. COM 229899109 99,607 1,124,870 SH   SOLE   1,035,290 0 89,580
DENTSPLY SIRONA, Inc. COM 24906P109 179,188 3,361,245 SH   SOLE   3,098,935 0 262,310
Edwards Lifesciences Corporati COM 28176E108 198,814 904,070 SH   SOLE   834,060 0 70,010
Envestnet, Inc. COM 29404K106 55,916 986,175 SH   SOLE   702,485 0 283,690
Envista Holdings Corp. COM 29415F104 11,152 400,000 SH   SOLE   368,850 0 31,150
Everest Re Group, Ltd. COM G3223R108 265,837 999,050 SH   SOLE   921,015 0 78,035
Evoqua Water Technologies Corp COM 30057T105 25,534 1,500,260 SH   SOLE   1,065,065 0 435,195
Flowers Foods, Inc. COM 343498101 80,739 3,490,650 SH   SOLE   3,218,345 0 272,305
Fortive Corp. COM 34959J108 213,764 3,117,915 SH   SOLE   2,931,790 0 186,125
Freshpet Inc COM 358039105 61,165 1,228,960 SH   SOLE   871,370 0 357,590
German American Bancorp, Inc. COM 373865104 35,424 1,105,270 SH   SOLE   783,545 0 321,725
Guidewire Software, Inc. COM 40171V100 146,638 1,391,515 SH   SOLE   1,282,855 0 108,660
H.B. Fuller Company COM 359694106 68,480 1,470,780 SH   SOLE   1,043,145 0 427,635
Helen of Troy Limited COM G4388N106 38,610 244,895 SH   SOLE   174,315 0 70,580
Hormel Foods Corporation COM 440452100 134,841 3,083,495 SH   SOLE   2,832,730 0 250,765
Hostess Brands, Inc. Class A COM 44109J106 121,301 8,673,630 SH   SOLE   6,163,465 0 2,510,165
IDEX Corporation COM 45167R104 159,418 972,770 SH   SOLE   896,995 0 75,775
Independent Bank Corp. COM 453836108 82,892 1,110,405 SH   SOLE   790,730 0 319,675
Innospec Inc. COM 45768S105 58,868 660,395 SH   SOLE   468,770 0 191,625
Inspire Medical Systems, Inc. COM 457730109 18,086 296,390 SH   SOLE   209,430 0 86,960
Integra LifeSciences Holdings COM 457985208 341,123 5,678,760 SH   SOLE   4,722,040 0 956,720
International Flavors & Fragra COM 459506101 114,170 930,555 SH   SOLE   854,845 0 75,710
J & J Snack Foods Corp. COM 466032109 24,036 125,190 SH   SOLE   87,345 0 37,845
J.M. Smucker Company COM 832696405 170,823 1,552,655 SH   SOLE   1,431,790 0 120,865
James River Group Holdings Ltd COM G5005R107 50,074 977,245 SH   SOLE   690,555 0 286,690
John Bean Technologies Corpora COM 477839104 121,161 1,218,555 SH   SOLE   867,135 0 351,420
John Wiley & Sons, Inc. Class COM 968223206 181,773 4,136,840 SH   SOLE   3,360,780 0 776,060
Laboratory Corporation of Amer COM 50540R409 130,260 775,360 SH   SOLE   714,325 0 61,035
Lamb Weston Holdings, Inc. COM 513272104 165,019 2,269,235 SH   SOLE   2,092,350 0 176,885
Lancaster Colony Corporation COM 513847103 70,689 509,835 SH   SOLE   362,950 0 146,885
LogMeIn, Inc. COM 54142L109 45,313 638,575 SH   SOLE   453,075 0 185,500
Lydall, Inc. COM 550819106 16,254 652,510 SH   SOLE   461,640 0 190,870
MGP Ingredients, Inc. COM 55303J106 63,032 1,268,765 SH   SOLE   898,535 0 370,230
MSA Safety, Inc. COM 553498106 112,276 1,029,020 SH   SOLE   731,630 0 297,390
Masimo Corporation COM 574795100 137,018 920,880 SH   SOLE   779,050 0 141,830
McCormick & Company, Incorpora COM 579780206 80,063 512,240 SH   SOLE   472,220 0 40,020
Medidata Solutions, Inc. COM 58471A105 188,102 2,055,760 SH   SOLE   1,667,165 0 388,595
Molson Coors Brewing Company C COM 60871R209 111,796 1,944,285 SH   SOLE   1,800,285 0 144,000
Morningstar, Inc. COM 617700109 44,741 306,150 SH   SOLE   282,460 0 23,690
National Vision Holdings, Inc. COM 63845R107 35,043 1,455,875 SH   SOLE   1,034,565 0 421,310
New Relic, Inc. COM 64829B100 147,016 2,392,445 SH   SOLE   1,957,120 0 435,325
Nordson Corporation COM 655663102 219,797 1,502,785 SH   SOLE   1,384,030 0 118,755
Northern Trust Corporation COM 665859104 172,030 1,843,445 SH   SOLE   1,695,145 0 148,300
Novanta Inc COM 67000B104 12,877 157,570 SH   SOLE   112,680 0 44,890
NuVasive, Inc. COM 670704105 59,709 942,080 SH   SOLE   667,615 0 274,465
Nutanix, Inc. Class A COM 67059N108 109,666 4,177,740 SH   SOLE   3,852,175 0 325,565
Okta, Inc. Class A COM 679295105 77,615 788,290 SH   SOLE   690,120 0 98,170
Palo Alto Networks, Inc. COM 697435105 173,013 848,810 SH   SOLE   782,735 0 66,075
Palomar Holdings, Inc. COM 69753M105 11,290 286,405 SH   SOLE   204,930 0 81,475
Penumbra, Inc. COM 70975L107 33,000 245,370 SH   SOLE   174,830 0 70,540
Prestige Consumer Healthcare I COM 74112D101 74,754 2,154,925 SH   SOLE   1,529,440 0 625,485
Prosperity Bancshares, Inc.(R) COM 743606105 172,163 2,437,530 SH   SOLE   2,036,315 0 401,215
Pure Storage, Inc. Class A COM 74624M102 256,695 15,153,205 SH   SOLE   12,471,905 0 2,681,300
Q2 Holdings, Inc. COM 74736L109 100,869 1,278,930 SH   SOLE   908,155 0 370,775
Qualys, Inc. COM 74758T303 43,443 574,870 SH   SOLE   408,610 0 166,260
Ritchie Bros. Auctioneers Inco COM 767744105 95,418 2,391,430 SH   SOLE   1,695,825 0 695,605
Rockwell Automation, Inc. COM 773903109 207,238 1,257,510 SH   SOLE   1,157,610 0 99,900
SVB Financial Group COM 78486Q101 80,356 384,570 SH   SOLE   353,830 0 30,740
SailPoint Technologies Holding COM 78781P105 37,636 2,013,720 SH   SOLE   1,431,965 0 581,755
Sally Beauty Holdings, Inc. COM 79546E104 134,286 9,018,555 SH   SOLE   7,354,655 0 1,663,900
Sensient Technologies Corporat COM 81725T100 128,937 1,878,180 SH   SOLE   1,335,430 0 542,750
ServiceNow, Inc. COM 81762P102 93,092 366,720 SH   SOLE   337,205 0 29,515
Simply Good Foods Co COM 82900L102 76,764 2,647,945 SH   SOLE   1,879,305 0 768,640
Splunk Inc. COM 848637104 197,091 1,672,245 SH   SOLE   1,541,940 0 130,305
Standex International Corporat COM 854231107 53,522 733,780 SH   SOLE   522,260 0 211,520
Stericycle, Inc. COM 858912108 83,173 1,633,085 SH   SOLE   1,502,840 0 130,245
Stock Yards Bancorp, Inc. COM 861025104 33,815 921,636 SH   SOLE   651,461 0 270,175
Supernus Pharmaceuticals, Inc. COM 868459108 17,204 626,040 SH   SOLE   443,230 0 182,810
Synopsys, Inc. COM 871607107 82,526 601,280 SH   SOLE   554,365 0 46,915
Teladoc Health, Inc. COM 87918A105 77,677 1,147,025 SH   SOLE   814,980 0 332,045
Tenable Holdings, Inc. COM 88025T102 51,869 2,317,645 SH   SOLE   1,649,125 0 668,520
Tractor Supply Company COM 892356106 135,727 1,500,745 SH   SOLE   1,382,475 0 118,270
TreeHouse Foods, Inc. COM 89469A104 187,313 3,378,055 SH   SOLE   2,811,390 0 566,665
TriMas Corporation COM 896215209 33,732 1,100,545 SH   SOLE   781,075 0 319,470
UMB Financial Corporation COM 902788108 100,544 1,556,885 SH   SOLE   1,103,880 0 453,005
Ulta Beauty Inc COM 90384S303 133,779 533,730 SH   SOLE   492,020 0 41,710
Veeva Systems Inc Class A COM 922475108 132,762 869,485 SH   SOLE   801,985 0 67,500
Verisk Analytics Inc COM 92345Y106 107,385 679,050 SH   SOLE   626,360 0 52,690
Washington Trust Bancorp, Inc. COM 940610108 37,475 775,715 SH   SOLE   548,975 0 226,740
Waters Corporation COM 941848103 219,484 983,220 SH   SOLE   906,375 0 76,845
Welbilt Inc COM 949090104 120,237 7,131,475 SH   SOLE   5,068,290 0 2,063,185
West Pharmaceutical Services, COM 955306105 87,371 616,070 SH   SOLE   565,480 0 50,590
Wolverine World Wide, Inc. COM 978097103 69,413 2,456,245 SH   SOLE   1,744,010 0 712,235
Workday, Inc. Class A COM 98138H101 175,340 1,031,655 SH   SOLE   951,375 0 80,280
Yext, Inc. COM 98585N106 91,252 5,742,715 SH   SOLE   4,081,415 0 1,661,300
e.l.f. Beauty, Inc. COM 26856L103 57,841 3,303,330 SH   SOLE   2,345,985 0 957,345
Alibaba Group Holding Ltd. Spo ADR 01609W102 244 1,460 SH   SOLE   1,460 0 0
Ambev SA Sponsored ADR ADR 02319V103 63 13,600 SH   SOLE   13,600 0 0
Talend SA Sponsored ADR ADR 874224207 22,616 665,575 SH   SOLE   487,480 0 178,095