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
AAON INC COM PAR $0.004 000360206 23,094 368,980 SH   SOLE   334,713 0 34,267
ACCENTURE PLC IRELAND SHS CLASS A G1151C101 54,508 184,906 SH   SOLE   30,444 0 154,462
ACI WORLDWIDE INC COM 004498101 46,766 1,259,174 SH   SOLE   1,136,284 0 122,890
ACUITY BRANDS INC COM 00508Y102 262,530 1,411,149 SH   SOLE   1,339,775 0 71,374
ADOBE SYSTEMS INCORPORATED COM 00724F101 173,606 296,438 SH   SOLE   70,333 0 226,105
ADVANCED DRAIN SYS INC DEL COM 00790R104 86,309 740,409 SH   SOLE   727,116 0 13,293
AFFILIATED MANAGERS GROUP IN COM 008252108 355,991 2,308,482 SH   SOLE   2,301,058 0 7,424
AIR PRODS & CHEMS INC COM 009158106 106,861 371,458 SH   SOLE   57,552 0 313,906
ALAMO GROUP INC COM 011311107 36,921 241,821 SH   SOLE   218,218 0 23,603
ALPHABET INC CAP STK CL C 02079K107 550,200 219,525 SH   SOLE   70,887 0 148,638
AMERICAN TOWER CORP NEW COM 03027X100 274,838 1,017,392 SH   SOLE   255,322 0 762,070
AMETEK INC COM 031100100 69,548 520,957 SH   SOLE   237,010 0 283,947
AMPHENOL CORP NEW CL A 032095101 196,923 2,878,565 SH   SOLE   773,022 0 2,105,543
AON PLC SHS CL A G0403H108 82,707 346,401 SH   SOLE   58,071 0 288,330
APTARGROUP INC COM 038336103 464,212 3,296,026 SH   SOLE   3,225,863 0 70,163
ARAMARK COM 03852U106 636,901 17,098,018 SH   SOLE   15,313,038 0 1,784,980
ARTISAN PARTNERS ASSET MGMT CL A 04316A108 46,549 915,965 SH   SOLE   818,103 0 97,862
AUTODESK INC COM 052769106 56,548 193,724 SH   SOLE   87,019 0 106,705
BALCHEM CORP COM 057665200 27,366 208,490 SH   SOLE   191,079 0 17,411
BALL CORP COM 058498106 124,455 1,536,106 SH   SOLE   437,883 0 1,098,223
BEACON ROOFING SUPPLY INC COM 073685109 67,152 1,261,062 SH   SOLE   1,120,563 0 140,499
BIO-TECHNE CORP COM 09073M104 256,954 570,680 SH   SOLE   556,940 0 13,740
BLACK KNIGHT INC COM 09215C105 185,043 2,372,951 SH   SOLE   2,347,567 0 25,384
BLACKBAUD INC COM 09227Q100 315,053 4,114,574 SH   SOLE   3,957,937 0 156,637
BOOZ ALLEN HAMILTON HLDG COR CL A 099502106 256,775 3,014,502 SH   SOLE   2,947,744 0 66,758
BROADRIDGE FINL SOLUTIONS IN COM 11133T103 204,310 1,264,841 SH   SOLE   1,235,988 0 28,853
BROWN & BROWN INC COM 115236101 368,178 6,928,447 SH   SOLE   6,794,174 0 134,273
BURLINGTON STORES INC COM 122017106 160,196 497,519 SH   SOLE   485,418 0 12,101
CACI INTL INC CL A 127190304 316,543 1,240,763 SH   SOLE   1,215,080 0 25,683
CARLISLE COS INC COM 142339100 671,063 3,506,443 SH   SOLE   3,433,863 0 72,580
CASEYS GEN STORES INC COM 147528103 153,747 789,905 SH   SOLE   774,304 0 15,601
CASS INFORMATION SYS INC COM 14808P109 22,981 563,951 SH   SOLE   509,378 0 54,573
CBIZ INC COM 124805102 42,512 1,297,282 SH   SOLE   1,154,438 0 142,844
CDW CORP COM 12514G108 156,903 898,383 SH   SOLE   429,361 0 469,022
CENTRAL GARDEN & PET CO COM 153527106 36,308 685,963 SH   SOLE   618,826 0 67,137
SCHWAB CHARLES CORP COM 808513105 82,290 1,130,201 SH   SOLE   171,755 0 958,446
CHOICE HOTELS INTL INC COM 169905106 430,993 3,626,055 SH   SOLE   3,494,427 0 131,628
COLUMBIA SPORTSWEAR CO COM 198516106 296,611 3,015,562 SH   SOLE   2,910,082 0 105,480
COMMVAULT SYS INC COM 204166102 29,272 374,467 SH   SOLE   337,440 0 37,027
COOPER COS INC COM NEW 216648402 128,940 325,385 SH   SOLE   152,562 0 172,823
COSTCO WHSL CORP NEW COM 22160K105 68,244 172,477 SH   SOLE   28,719 0 143,758
CROWN CASTLE INTL CORP NEW COM 22822V101 91,974 471,420 SH   SOLE   77,896 0 393,524
DANAHER CORPORATION COM 235851102 436,403 1,626,186 SH   SOLE   495,704 0 1,130,482
DECKERS OUTDOOR CORP COM 243537107 163,540 425,807 SH   SOLE   415,904 0 9,903
DENTSPLY SIRONA INC COM 24906P109 479,834 7,585,111 SH   SOLE   6,724,654 0 860,457
DIAGEO PLC SPON ADR NEW 25243Q205 100,193 522,684 SH   SOLE   234,185 0 288,499
DOLBY LABORATORIES INC COM CL A 25659T107 322,010 3,276,117 SH   SOLE   3,203,633 0 72,484
DOLLAR GEN CORP NEW COM 256677105 268,775 1,242,087 SH   SOLE   292,665 0 949,422
DONALDSON INC COM 257651109 162,054 2,550,830 SH   SOLE   2,495,191 0 55,639
DORMAN PRODS INC COM 258278100 67,453 650,652 SH   SOLE   587,717 0 62,935
DRIL-QUIP INC COM 262037104 20,898 617,737 SH   SOLE   566,828 0 50,909
ECOLAB INC COM 278865100 233,112 1,131,776 SH   SOLE   273,520 0 858,256
ELECTRONIC ARTS INC COM 285512109 49,148 341,712 SH   SOLE   56,694 0 285,018
EMERGENT BIOSOLUTIONS INC COM 29089Q105 28,623 454,405 SH   SOLE   412,919 0 41,486
ENVESTNET INC COM 29404K106 53,206 701,374 SH   SOLE   637,632 0 63,742
ENVISTA HOLDINGS CORPORATION COM 29415F104 492,310 11,393,424 SH   SOLE   11,128,365 0 265,059
EPLUS INC COM 294268107 31,470 363,012 SH   SOLE   327,172 0 35,840
LAUDER ESTEE COS INC CL A 518439104 137,284 431,602 SH   SOLE   68,415 0 363,187
EXPONENT INC COM 30214U102 42,069 471,573 SH   SOLE   427,698 0 43,875
FACEBOOK INC CL A 30303M102 53,549 154,005 SH   SOLE   154,005 0 0
FACTSET RESH SYS INC COM 303075105 136,846 407,753 SH   SOLE   397,257 0 10,496
FAIR ISAAC CORP COM 303250104 114,159 227,101 SH   SOLE   221,386 0 5,715
FIDELITY NATL INFORMATION SV COM 31620M106 120,476 850,399 SH   SOLE   140,081 0 710,318
FISERV INC COM 337738108 366,090 3,424,924 SH   SOLE   1,243,599 0 2,181,325
FORWARD AIR CORP COM 349853101 57,758 643,545 SH   SOLE   573,475 0 70,070
FRONTDOOR INC COM 35905A109 205,409 4,123,016 SH   SOLE   3,975,552 0 147,464
FTI CONSULTING INC COM 302941109 56,565 414,063 SH   SOLE   368,208 0 45,855
GARTNER INC COM 366651107 630,093 2,601,541 SH   SOLE   1,752,866 0 848,675
GLOBAL PMTS INC COM 37940X102 142,245 758,476 SH   SOLE   344,078 0 414,398
GODADDY INC CL A 380237107 112,355 1,292,036 SH   SOLE   644,761 0 647,275
GRACO INC COM 384109104 167,496 2,212,623 SH   SOLE   2,160,692 0 51,931
HAMILTON LANE INC CL A 407497106 30,531 335,063 SH   SOLE   302,099 0 32,964
FULLER H B CO COM 359694106 26,542 417,262 SH   SOLE   376,177 0 41,085
HENRY SCHEIN INC COM 806407102 119,931 1,616,540 SH   SOLE   1,582,054 0 34,486
HEXCEL CORP NEW COM 428291108 304,329 4,877,063 SH   SOLE   4,757,160 0 119,903
HOULIHAN LOKEY INC CL A 441593100 70,851 866,254 SH   SOLE   781,935 0 84,319
HURON CONSULTING GROUP INC COM 447462102 34,462 701,164 SH   SOLE   637,213 0 63,951
IAA INC COM 449253103 307,668 5,641,146 SH   SOLE   5,524,364 0 116,782
ICU MED INC COM 44930G107 72,583 352,686 SH   SOLE   318,356 0 34,330
IDEX CORP COM 45167R104 351,672 1,598,147 SH   SOLE   1,165,395 0 432,752
IHS MARKIT LTD SHS G47567105 211,520 1,877,511 SH   SOLE   473,807 0 1,403,704
INTEGRA LIFESCIENCES HLDGS C COM NEW 457985208 66,846 979,570 SH   SOLE   875,036 0 104,534
INTER PARFUMS INC COM 458334109 74,350 1,032,644 SH   SOLE   920,872 0 111,772
INTERCONTINENTAL EXCHANGE IN COM 45866F104 242,497 2,042,937 SH   SOLE   468,261 0 1,574,676
INTUIT COM 461202103 225,366 459,772 SH   SOLE   124,946 0 334,826
INTUITIVE SURGICAL INC COM NEW 46120E602 39,202 42,628 SH   SOLE   7,085 0 35,543
ISHARES TR RUS 1000 ETF 464287622 3,350 13,839 SH   SOLE   0 0 13,839
ISHARES TR RUS 1000 GRW ETF 464287614 249 919 SH   SOLE   0 0 919
ISHARES TR RUSSELL 2000 ETF 464287655 502 2,188 SH   SOLE   0 0 2,188
J & J SNACK FOODS CORP COM 466032109 56,953 326,547 SH   SOLE   294,801 0 31,746
HENRY JACK & ASSOC INC COM 426281101 146,174 893,977 SH   SOLE   873,753 0 20,224
HUNT J B TRANS SVCS INC COM 445658107 452,641 2,777,789 SH   SOLE   2,709,578 0 68,211
JONES LANG LASALLE INC COM 48020Q107 273,422 1,398,862 SH   SOLE   1,366,209 0 32,653
KAR AUCTION SVCS INC COM 48238T109 28,377 1,616,906 SH   SOLE   1,457,647 0 159,259
KINSALE CAP GROUP INC COM 49714P108 66,548 403,885 SH   SOLE   371,153 0 32,732
KIRBY CORP COM 497266106 269,458 4,443,563 SH   SOLE   4,293,406 0 150,157
LABORATORY CORP AMER HLDGS COM NEW 50540R409 51,379 186,258 SH   SOLE   28,393 0 157,865
LANCASTER COLONY CORP COM 513847103 26,638 137,656 SH   SOLE   123,395 0 14,261
LANDSTAR SYS INC COM 515098101 336,684 2,130,641 SH   SOLE   2,056,673 0 73,968
LENNOX INTL INC COM 526107107 378,057 1,077,699 SH   SOLE   1,053,868 0 23,831
LINDE PLC SHS G5494J103 200,470 693,428 SH   SOLE   186,209 0 507,219
LKQ CORP COM 501889208 244,330 4,964,035 SH   SOLE   4,846,387 0 117,648
LOWES COS INC COM 548661107 85,797 442,320 SH   SOLE   72,932 0 369,388
MANHATTAN ASSOCIATES INC COM 562750109 301,670 2,082,783 SH   SOLE   2,032,909 0 49,874
MARKEL CORP COM 570535104 488,137 411,336 SH   SOLE   350,033 0 61,303
MARSH & MCLENNAN COS INC COM 571748102 179,395 1,275,198 SH   SOLE   336,197 0 939,001
MARTIN MARIETTA MATLS INC COM 573284106 84,148 239,187 SH   SOLE   113,875 0 125,312
MASTERCARD INCORPORATED CL A 57636Q104 245,289 671,859 SH   SOLE   164,327 0 507,532
MCGRATH RENTCORP COM 580589109 29,844 365,875 SH   SOLE   329,738 0 36,137
MESA LABS INC COM 59064R109 36,379 134,155 SH   SOLE   122,242 0 11,913
MICROSOFT CORP COM 594918104 369,722 1,364,792 SH   SOLE   358,718 0 1,006,074
MONDELEZ INTL INC CL A 609207105 65,515 1,049,245 SH   SOLE   164,758 0 884,487
MONRO INC COM 610236101 34,343 540,745 SH   SOLE   487,459 0 53,286
MOODYS CORP COM 615369105 40,968 113,056 SH   SOLE   18,973 0 94,083
MOOG INC CL A 615394202 60,314 717,516 SH   SOLE   639,454 0 78,062
MORNINGSTAR INC COM 617700109 284,819 1,107,771 SH   SOLE   1,079,905 0 27,866
NATIONAL INSTRS CORP COM 636518102 36,715 868,372 SH   SOLE   789,929 0 78,443
NATIONAL RESH CORP COM NEW 637372202 22,447 489,036 SH   SOLE   436,629 0 52,407
NIKE INC CL B 654106103 106,696 690,632 SH   SOLE   113,681 0 576,951
NORDSON CORP COM 655663102 262,856 1,197,469 SH   SOLE   1,168,388 0 29,081
OREILLY AUTOMOTIVE INC COM 67103H107 210,154 371,159 SH   SOLE   114,871 0 256,288
PATTERSON COS INC COM 703395103 22,183 729,931 SH   SOLE   663,097 0 66,834
PEPSICO INC COM 713448108 68,810 464,396 SH   SOLE   69,261 0 395,135
PERFICIENT INC COM 71375U101 34,082 423,799 SH   SOLE   381,676 0 42,123
PINNACLE FINL PARTNERS INC COM 72346Q104 45,969 520,661 SH   SOLE   462,686 0 57,975
POOL CORP COM 73278L105 166,286 362,547 SH   SOLE   352,777 0 9,770
POWER INTEGRATIONS INC COM 739276103 43,988 536,051 SH   SOLE   480,303 0 55,748
PROSPERITY BANCSHARES INC COM 743606105 189,942 2,645,429 SH   SOLE   2,587,584 0 57,845
QUALYS INC COM 74758T303 57,736 573,400 SH   SOLE   523,204 0 50,196
RAVEN INDS INC COM 754212108 46,360 801,384 SH   SOLE   718,085 0 83,299
RLI CORP COM 749607107 40,854 390,609 SH   SOLE   351,516 0 39,093
ROSS STORES INC COM 778296103 115,041 927,754 SH   SOLE   423,799 0 503,955
RPM INTL INC COM 749685103 387,118 4,365,334 SH   SOLE   4,269,249 0 96,085
S&P GLOBAL INC COM 78409V104 58,081 141,506 SH   SOLE   23,462 0 118,044
SALLY BEAUTY HLDGS INC COM 79546E104 34,688 1,571,728 SH   SOLE   1,411,598 0 160,130
SEI INVTS CO COM 784117103 425,255 6,862,271 SH   SOLE   6,718,891 0 143,380
SELECTIVE INS GROUP INC COM 816300107 62,727 772,971 SH   SOLE   696,297 0 76,674
SERVICE CORP INTL COM 817565104 137,569 2,567,071 SH   SOLE   2,516,256 0 50,815
SHERWIN WILLIAMS CO COM 824348106 106,752 391,821 SH   SOLE   174,880 0 216,941
SILGAN HOLDINGS INC COM 827048109 40,344 972,149 SH   SOLE   870,130 0 102,019
SIMPSON MFG INC COM 829073105 43,698 395,675 SH   SOLE   358,803 0 36,872
SOUTH ST CORP COM 840441109 44,543 544,807 SH   SOLE   488,795 0 56,012
SPROUTS FMRS MKT INC COM 85208M102 19,025 765,603 SH   SOLE   690,226 0 75,377
STARBUCKS CORP COM 855244109 112,438 1,005,619 SH   SOLE   162,998 0 842,621
STEPAN CO COM 858586100 24,696 205,341 SH   SOLE   183,996 0 21,345
STERIS PLC SHS USD G8473T100 101,676 492,857 SH   SOLE   223,327 0 269,530
TE CONNECTIVITY LTD REG SHS H84989104 66,539 492,118 SH   SOLE   81,316 0 410,802
TECHTARGET INC COM 87874R100 30,971 399,682 SH   SOLE   360,266 0 39,416
TELEFLEX INCORPORATED COM 879369106 218,653 544,197 SH   SOLE   353,700 0 190,497
TERMINIX GLOBAL HOLDINGS INC COM 88087E100 423,525 8,877,061 SH   SOLE   8,676,844 0 200,217
TEXAS INSTRS INC COM 882508104 75,471 392,466 SH   SOLE   68,622 0 323,844
THERMO FISHER SCIENTIFIC INC COM 883556102 465,523 922,796 SH   SOLE   267,722 0 655,074
TJX COS INC NEW COM 872540109 428,205 6,351,309 SH   SOLE   2,168,973 0 4,182,336
TRANSUNION COM 89400J107 85,658 780,058 SH   SOLE   365,178 0 414,880
TRIMBLE INC COM 896239100 169,471 2,071,009 SH   SOLE   2,023,650 0 47,359
ULTA BEAUTY INC COM 90384S303 296,431 857,308 SH   SOLE   837,012 0 20,296
UMPQUA HLDGS CORP COM 904214103 193,543 10,490,139 SH   SOLE   10,091,380 0 398,759
UNIFIRST CORP MASS COM 904708104 55,077 234,728 SH   SOLE   212,843 0 21,885
UNIVERSAL HEALTH RLTY INCOME SH BEN INT 91359E105 22,777 370,049 SH   SOLE   345,915 0 24,134
US BANCORP DEL COM NEW 902973304 126,905 2,227,570 SH   SOLE   1,002,476 0 1,225,094
US ECOLOGY INC COM 91734M103 23,401 623,683 SH   SOLE   566,431 0 57,252
VERISK ANALYTICS INC COM 92345Y106 324,262 1,855,896 SH   SOLE   519,301 0 1,336,595
VISA INC COM CL A 92826C839 469,573 2,008,268 SH   SOLE   630,171 0 1,378,097
WESTAMERICA BANCORPORATION COM 957090103 27,970 481,991 SH   SOLE   438,608 0 43,383
WEX INC COM 96208T104 489,186 2,522,880 SH   SOLE   2,464,374 0 58,506
WHITE MTNS INS GROUP LTD COM G9618E107 223,834 194,972 SH   SOLE   92,839 0 102,133
WOLVERINE WORLD WIDE INC COM 978097103 51,072 1,518,205 SH   SOLE   1,354,027 0 164,178
WOODWARD INC COM 980745103 175,473 1,428,002 SH   SOLE   1,401,467 0 26,535
BERKLEY W R CORP COM 084423102 700,802 9,415,581 SH   SOLE   9,207,317 0 208,264
XYLEM INC COM 98419M100 178,826 1,490,716 SH   SOLE   389,679 0 1,101,037
YETI HLDGS INC COM 98585X104 29,397 320,155 SH   SOLE   286,221 0 33,934
ZOETIS INC CL A 98978V103 272,598 1,462,747 SH   SOLE   369,602 0 1,093,145