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
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
AMETEK, Inc. COM 031100100 209,400 2,907,520 SH   SOLE   2,686,665 0 220,855
Advance Auto Parts, Inc. COM 00751Y106 133,593 1,431,560 SH   SOLE   1,322,805 0 108,755
Albany International Corp. Cla COM 012348108 9,215 194,700 SH   SOLE   143,660 0 51,040
Align Technology, Inc. COM 016255101 89,335 513,565 SH   SOLE   473,860 0 39,705
Altra Industrial Motion Corp. COM 02208R106 51,384 2,937,905 SH   SOLE   2,161,775 0 776,130
Aptargroup, Inc. COM 038336103 186,511 1,873,730 SH   SOLE   1,729,760 0 143,970
Arco Platform Ltd. Class A COM G04553106 865 20,475 SH   SOLE   20,475 0 0
Argo Group International Holdi COM G0464B107 69,101 1,864,558 SH   SOLE   1,368,773 0 495,785
Arthur J. Gallagher & Co. COM 363576109 197,825 2,427,005 SH   SOLE   2,242,680 0 184,325
AtriCure, Inc. COM 04963C209 56,875 1,693,225 SH   SOLE   1,242,415 0 450,810
Avanos Medical, Inc. COM 05350V106 92,488 3,434,370 SH   SOLE   2,520,850 0 913,520
B&G Foods, Inc. COM 05508R106 59,734 3,302,030 SH   SOLE   2,429,865 0 872,165
Barnes Group Inc. COM 067806109 81,165 1,940,350 SH   SOLE   1,424,865 0 515,485
Bio-Rad Laboratories, Inc. Cla COM 090572207 36,011 102,725 SH   SOLE   94,775 0 7,950
Bio-Techne Corporation COM 09073M104 207,862 1,096,205 SH   SOLE   1,018,210 0 77,995
BlackLine, Inc. COM 09239B109 45,596 866,670 SH   SOLE   635,210 0 231,460
Blackbaud, Inc. COM 09227Q100 67,117 1,208,235 SH   SOLE   886,640 0 321,595
Boston Beer Company, Inc. Clas COM 100557107 54,013 146,950 SH   SOLE   107,080 0 39,870
Brown-Forman Corporation Class COM 115637209 70,753 1,274,595 SH   SOLE   1,182,925 0 91,670
Bryn Mawr Bank Corporation COM 117665109 30,734 1,082,955 SH   SOLE   801,430 0 281,525
CONMED Corporation COM 207410101 73,145 1,277,195 SH   SOLE   936,005 0 341,190
CSW Industrials, Inc. COM 126402106 31,101 479,590 SH   SOLE   356,620 0 122,970
CVB Financial Corp. COM 126600105 51,461 2,566,645 SH   SOLE   1,885,380 0 681,265
Campbell Soup Company COM 134429109 59,653 1,292,300 SH   SOLE   1,191,575 0 100,725
Cantel Medical Corp. COM 138098108 131,743 3,669,710 SH   SOLE   3,064,975 0 604,735
Cardiovascular Systems, Inc. COM 141619106 94,729 2,690,410 SH   SOLE   1,975,275 0 715,135
Catalent Inc COM 148806102 254,928 4,907,175 SH   SOLE   4,198,045 0 709,130
Chase Corporation COM 16150R104 22,869 277,910 SH   SOLE   204,930 0 72,980
Church & Dwight Co., Inc. COM 171340102 36,616 570,525 SH   SOLE   529,775 0 40,750
Clarivate Analytics Plc COM G21810109 156,143 7,524,955 SH   SOLE   6,954,270 0 570,685
Commerce Bancshares, Inc. COM 200525103 49,018 973,551 SH   SOLE   899,056 0 74,495
Community Bank System, Inc. COM 203607106 60,089 1,021,920 SH   SOLE   751,355 0 270,565
Cooper Companies, Inc. COM 216648402 133,102 482,830 SH   SOLE   448,365 0 34,465
Cullen/Frost Bankers, Inc. COM 229899109 91,474 1,639,615 SH   SOLE   1,514,385 0 125,230
DENTSPLY SIRONA, Inc. COM 24906P109 153,545 3,954,290 SH   SOLE   3,650,665 0 303,625
Dunkin' Brands Group, Inc. COM 265504100 79,706 1,501,060 SH   SOLE   1,387,525 0 113,535
Edwards Lifesciences Corporati COM 28176E108 176,653 936,554 SH   SOLE   864,014 0 72,540
Envestnet, Inc. COM 29404K106 58,667 1,090,865 SH   SOLE   800,845 0 290,020
Envista Holdings Corp. COM 29415F104 40,887 2,736,755 SH   SOLE   2,483,450 0 253,305
Everest Re Group, Ltd. COM G3223R108 201,392 1,046,625 SH   SOLE   966,380 0 80,245
Evoqua Water Technologies Corp COM 30057T105 13,352 1,191,115 SH   SOLE   875,145 0 315,970
Fortive Corp. COM 34959J108 216,086 3,915,315 SH   SOLE   3,687,720 0 227,595
Freshpet Inc COM 358039105 92,259 1,444,485 SH   SOLE   1,058,550 0 385,935
German American Bancorp, Inc. COM 373865104 33,400 1,216,775 SH   SOLE   894,340 0 322,435
Globus Medical Inc Class A COM 379577208 27,489 646,350 SH   SOLE   477,490 0 168,860
Guidewire Software, Inc. COM 40171V100 63,184 796,670 SH   SOLE   736,240 0 60,430
H.B. Fuller Company COM 359694106 39,653 1,419,740 SH   SOLE   1,039,495 0 380,245
Hostess Brands, Inc. Class A COM 44109J106 104,883 9,838,905 SH   SOLE   7,229,065 0 2,609,840
IDEX Corporation COM 45167R104 173,131 1,253,570 SH   SOLE   1,156,965 0 96,605
Independent Bank Corp. COM 453836108 80,723 1,254,040 SH   SOLE   919,265 0 334,775
Innospec Inc. COM 45768S105 47,446 682,775 SH   SOLE   502,655 0 180,120
Inspire Medical Systems, Inc. COM 457730109 52,463 870,320 SH   SOLE   638,615 0 231,705
Integra LifeSciences Holdings COM 457985208 276,919 6,199,220 SH   SOLE   5,187,175 0 1,012,045
J & J Snack Foods Corp. COM 466032109 28,921 239,015 SH   SOLE   173,975 0 65,040
J.M. Smucker Company COM 832696405 216,030 1,946,215 SH   SOLE   1,797,505 0 148,710
James River Group Holdings Ltd COM G5005R107 44,607 1,230,875 SH   SOLE   906,530 0 324,345
John Bean Technologies Corpora COM 477839104 116,943 1,574,565 SH   SOLE   1,155,795 0 418,770
John Wiley & Sons, Inc. Class COM 968223206 164,517 4,388,290 SH   SOLE   3,605,365 0 782,925
Lamb Weston Holdings, Inc. COM 513272104 143,793 2,518,260 SH   SOLE   2,324,860 0 193,400
Lancaster Colony Corporation COM 513847103 139,071 961,495 SH   SOLE   704,285 0 257,210
Lydall, Inc. COM 550819106 3,922 607,165 SH   SOLE   441,205 0 165,960
MGP Ingredients, Inc. COM 55303J106 37,213 1,383,915 SH   SOLE   1,010,475 0 373,440
MSA Safety, Inc. COM 553498106 85,120 841,105 SH   SOLE   616,735 0 224,370
Masimo Corporation COM 574795100 136,976 773,350 SH   SOLE   663,735 0 109,615
McCormick & Company, Incorpora COM 579780206 75,151 532,195 SH   SOLE   491,295 0 40,900
Medallia, Inc. COM 584021109 149,403 7,455,235 SH   SOLE   6,484,020 0 971,215
Molson Coors Beverage Company COM 60871R209 79,031 2,025,905 SH   SOLE   1,877,915 0 147,990
Morningstar, Inc. COM 617700109 36,091 310,460 SH   SOLE   286,650 0 23,810
National Vision Holdings, Inc. COM 63845R107 33,522 1,726,160 SH   SOLE   1,268,595 0 457,565
New Relic, Inc. COM 64829B100 175,479 3,794,970 SH   SOLE   3,100,455 0 694,515
Nordson Corporation COM 655663102 173,293 1,282,985 SH   SOLE   1,184,050 0 98,935
Northern Trust Corporation COM 665859104 143,956 1,907,715 SH   SOLE   1,758,155 0 149,560
Novanta Inc COM 67000B104 12,359 154,725 SH   SOLE   106,345 0 48,380
Nutanix, Inc. Class A COM 67059N108 57,657 3,649,190 SH   SOLE   3,369,825 0 279,365
Okta, Inc. Class A COM 679295105 119,314 975,900 SH   SOLE   902,065 0 73,835
Palo Alto Networks, Inc. COM 697435105 145,640 888,265 SH   SOLE   820,490 0 67,775
Palomar Holdings, Inc. COM 69753M105 32,395 557,000 SH   SOLE   408,925 0 148,075
Penumbra, Inc. COM 70975L107 52,377 324,660 SH   SOLE   238,400 0 86,260
Prestige Consumer Healthcare I COM 74112D101 90,318 2,462,320 SH   SOLE   1,811,040 0 651,280
Proofpoint, Inc. COM 743424103 78,086 761,150 SH   SOLE   703,315 0 57,835
Prosperity Bancshares, Inc.(R) COM 743606105 125,304 2,596,975 SH   SOLE   2,192,080 0 404,895
Pure Storage, Inc. Class A COM 74624M102 226,261 18,395,170 SH   SOLE   15,300,515 0 3,094,655
Q2 Holdings, Inc. COM 74736L109 110,977 1,879,060 SH   SOLE   1,377,600 0 501,460
Qualys, Inc. COM 74758T303 27,270 313,480 SH   SOLE   229,905 0 83,575
Ritchie Bros. Auctioneers Inco COM 767744105 70,265 2,055,730 SH   SOLE   1,509,700 0 546,030
Rockwell Automation, Inc. COM 773903109 183,907 1,218,655 SH   SOLE   1,126,085 0 92,570
SVB Financial Group COM 78486Q101 65,196 431,535 SH   SOLE   398,815 0 32,720
SailPoint Technologies Holding COM 78781P105 60,745 3,991,155 SH   SOLE   2,929,305 0 1,061,850
Sally Beauty Holdings, Inc. COM 79546E104 39,860 4,933,205 SH   SOLE   3,633,625 0 1,299,580
Selective Insurance Group, Inc COM 816300107 19,501 392,370 SH   SOLE   289,025 0 103,345
Sensient Technologies Corporat COM 81725T100 93,426 2,147,235 SH   SOLE   1,579,480 0 567,755
ServiceNow, Inc. COM 81762P102 211,874 739,320 SH   SOLE   682,955 0 56,365
Simply Good Foods Co COM 82900L102 87,207 4,527,875 SH   SOLE   3,323,875 0 1,204,000
Splunk Inc. COM 848637104 183,574 1,454,285 SH   SOLE   1,344,115 0 110,170
Standex International Corporat COM 854231107 39,838 812,695 SH   SOLE   599,175 0 213,520
Stock Yards Bancorp, Inc. COM 861025104 29,229 1,010,352 SH   SOLE   740,422 0 269,930
Synopsys, Inc. COM 871607107 94,798 736,070 SH   SOLE   680,345 0 55,725
Tactile Systems Technology, In COM 87357P100 7,890 196,460 SH   SOLE   143,335 0 53,125
Teladoc Health, Inc. COM 87918A105 32,909 212,305 SH   SOLE   136,105 0 76,200
Tenable Holdings, Inc. COM 88025T102 90,773 4,152,475 SH   SOLE   3,050,600 0 1,101,875
Texas Roadhouse, Inc. COM 882681109 44,826 1,085,365 SH   SOLE   795,415 0 289,950
Toro Company COM 891092108 58,759 902,740 SH   SOLE   833,030 0 69,710
Tractor Supply Company COM 892356106 177,599 2,100,520 SH   SOLE   1,940,870 0 159,650
Tradeweb Markets, Inc. Class A COM 892672106 79,216 1,884,295 SH   SOLE   1,737,615 0 146,680
TreeHouse Foods, Inc. COM 89469A104 175,908 3,984,335 SH   SOLE   3,294,755 0 689,580
TriMas Corporation COM 896215209 48,375 2,094,140 SH   SOLE   1,537,275 0 556,865
UMB Financial Corporation COM 902788108 83,487 1,800,055 SH   SOLE   1,322,700 0 477,355
Ulta Beauty Inc COM 90384S303 142,104 808,785 SH   SOLE   747,055 0 61,730
Veeva Systems Inc Class A COM 922475108 170,339 1,089,335 SH   SOLE   1,005,920 0 83,415
Washington Trust Bancorp, Inc. COM 940610108 31,492 861,385 SH   SOLE   632,940 0 228,445
Waters Corporation COM 941848103 184,924 1,015,785 SH   SOLE   936,535 0 79,250
Welbilt Inc COM 949090104 40,544 7,903,386 SH   SOLE   5,802,256 0 2,101,130
West Pharmaceutical Services, COM 955306105 97,399 639,730 SH   SOLE   590,050 0 49,680
Wolverine World Wide, Inc. COM 978097103 51,633 3,396,895 SH   SOLE   2,494,450 0 902,445
Workday, Inc. Class A COM 98138H101 194,087 1,490,455 SH   SOLE   1,376,800 0 113,655
Yext, Inc. COM 98585N106 85,222 8,363,320 SH   SOLE   6,137,240 0 2,226,080
Zscaler, Inc. COM 98980G102 103,601 1,702,290 SH   SOLE   1,573,040 0 129,250
e.l.f. Beauty, Inc. COM 26856L103 35,847 3,643,000 SH   SOLE   2,676,735 0 966,265
Alibaba Group Holding Ltd. Spo ADR 01609W102 321 1,650 SH   SOLE   1,650 0 0