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
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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 FIGI (to the nearest dollar) PRN AMT PRN CALL DISCRETION MANAGER SOLE SHARED NONE
Amazon.Com, Inc. Stock 023135106   58,763,105 386,752 SH   SOLE 0 386,752 0 0
Rollins Inc Com Stock 775711104   204,507 4,683 SH   SOLE 0 4,683 0 0
Powershares Qqq Trust ETF 46090E103   219,970 537 SH   SOLE 0 537 0 0
Technology Select Sector Spdr Fund ETF 81369Y803   1,095,019 5,689 SH   SOLE 0 5,689 0 0
Starbucks Corporation Stock 855244109   336,323 3,503 SH   SOLE 0 3,503 0 0
Dollar General Corporation Stock 256677105   3,157,933 23,229 SH   SOLE 0 23,228 0 0
Johnson & Johnson Stock 478160104   4,933,085 31,473 SH   SOLE 0 31,473 0 0
Costco Wholesale Corporation Stock 22160K105   715,934 1,085 SH   SOLE 0 1,084 0 0
Cabot Corporation Stock 127055101   5,649,944 67,664 SH   SOLE 0 67,664 0 0
Ishares Msci Emerging Markets Etf ETF 464287234   1,480,733 36,825 SH   SOLE 0 36,825 0 0
Las Vegas Sands Corp. Stock 517834107   492,100 10,000 SH   SOLE 0 10,000 0 0
Watsco, Inc. Stock 942622200   236,087 551 SH   SOLE 0 551 0 0
Yum! Brands, Inc. Stock 988498101   217,680 1,666 SH   SOLE 0 1,666 0 0
Boston Scientific Corporation Stock 101137107   221,181 3,826 SH   SOLE 0 3,826 0 0
Procter & Gamble Company Stock 742718109   3,016,382 20,584 SH   SOLE 0 20,584 0 0
Coca-Cola Company Stock 191216100   4,233,434 71,838 SH   SOLE 0 71,838 0 0
Marriott International, Inc. Class A Stock 571903202   4,553,780 20,193 SH   SOLE 0 20,193 0 0
Powershares DB Commodity Index Tracking Fund ETF 46138B103   1,562,636 70,900 SH   SOLE 0 70,900 0 0
Cme Group Inc. Class A Stock 12572Q105   4,260,614 20,231 SH   SOLE 0 20,230 0 0
Fortive Corp. Stock 34959J108   29,566,964 401,561 SH   SOLE 0 401,561 0 0
Netflix, Inc. Stock 64110L106   973,760 2,000 SH   SOLE 0 2,000 0 0
Paychex, Inc. Stock 704326107   542,189 4,552 SH   SOLE 0 4,552 0 0
Integer Holdings Corporation Stock 45826H109   224,515 2,266 SH   SOLE 0 2,266 0 0
Tetra Tech Inc New Com Stock 88162G103   402,802 2,413 SH   SOLE 0 2,413 0 0
Pool Corporation Com Stock 73278L105   706,115 1,771 SH   SOLE 0 1,771 0 0
Merck & Co., Inc. Stock 58933Y105   1,268,993 11,640 SH   SOLE 0 11,640 0 0
Spdr S&P 500 Etf Trust ETF 78462F103   4,810,303 10,120 SH   SOLE 0 10,120 0 0
Mastercard Incorporated Class A Stock 57636Q104   502,002 1,177 SH   SOLE 0 1,177 0 0
Nordson Corp Com Stock 655663102   265,217 1,004 SH   SOLE 0 1,004 0 0
Allstate Corporation Stock 020002101   262,602 1,876 SH   SOLE 0 1,876 0 0
Vertex Pharmaceuticals Incorporated Stock 92532F100   922,013 2,266 SH   SOLE 0 2,266 0 0
Verizon Communications Inc. Stock 92343V104   230,159 6,105 SH   SOLE 0 6,105 0 0
Sherwin-Williams Company Stock 824348106   32,734,954 104,953 SH   SOLE 0 104,953 0 0
Pepsico, Inc. Stock 713448108   925,979 5,452 SH   SOLE 0 5,452 0 0
Honeywell International Inc. Stock 438516106   5,298,811 25,267 SH   SOLE 0 25,267 0 0
Xcel Energy Inc. Stock 98389B100   234,887 3,794 SH   SOLE 0 3,794 0 0
Home Depot, Inc. Stock 437076102   33,822,997 97,599 SH   SOLE 0 97,599 0 0
Automatic Data Processing, Inc. Stock 053015103   1,842,793 7,910 SH   SOLE 0 7,910 0 0
Cooper Cos Inc Com New Stock 216648402   273,612 723 SH   SOLE 0 723 0 0
Icici Bank Limited Sponsored Adr ADR 45104G104   326,846 13,710 SH   SOLE 0 13,710 0 0
Broadridge Financial Solutions, Inc. Stock 11133T103   5,657,190 27,495 SH   SOLE 0 27,495 0 0
Ishares Russell 1000 Growth Etf ETF 464287614   444,332 1,466 SH   SOLE 0 1,465 0 0
Metropolitan Bk Hldg Corp Com Stock 591774104   3,947,708 71,284 SH   SOLE 0 71,284 0 0
Steris Plc Stock G8473T100   6,633,346 30,172 SH   SOLE 0 30,172 0 0
Banco Bilbao Vizcaya Argentaria, S.A. Sponsored Adr ADR 05946K101   96,147 10,554 SH   SOLE 0 10,554 0 0
United Therapeutics Corp Del Com Stock 91307C102   549,725 2,500 SH   SOLE 0 2,500 0 0
Waste Connections, Inc. Stock 94106B101   33,854,088 226,798 SH   SOLE 0 226,797 0 0
Berkshire Hathaway Inc. Class B Stock 084670702   2,194,172 6,152 SH   SOLE 0 6,152 0 0
Adobe Systems Incorporated Stock 00724F101   37,152,072 62,273 SH   SOLE 0 62,273 0 0
Alphabet Inc. Class A Stock 02079K305   55,290,951 395,812 SH   SOLE 0 395,811 0 0
O'Reilly Automotive, Inc. Stock 67103H107   17,321,859 18,232 SH   SOLE 0 18,232 0 0
Constellation Brands, Inc. Class A Stock 21036P108   3,525,668 14,584 SH   SOLE 0 14,583 0 0
Comcast Corporation Class A Stock 20030N101   6,948,718 158,466 SH   SOLE 0 158,465 0 0
Ase Technology Hldg Co Ltd Sponsored Ads ADR 00215W100   125,953 13,385 SH   SOLE 0 13,385 0 0
Generac Holdings Inc. Stock 368736104   413,568 3,200 SH   SOLE 0 3,200 0 0
Microsoft Corporation Stock 594918104   78,940,578 209,926 SH   SOLE 0 209,926 0 0
Cvs Health Corporation Stock 126650100   297,935 3,773 SH   SOLE 0 3,773 0 0
Merit Med Sys Inc Com Stock 589889104   364,912 4,804 SH   SOLE 0 4,804 0 0
Berkshire Hathaway Inc. Class A Stock 084670108   3,798,375 7 SH   SOLE 0 7 0 0
Boeing Company Stock 097023105   856,007 3,284 SH   SOLE 0 3,284 0 0
Vanguard Small-Cap Index Fund ETF 922908751   214,823 1,007 SH   SOLE 0 1,007 0 0
Vanguard Mid-Cap Index Fund ETF 922908629   2,548,339 10,954 SH   SOLE 0 10,954 0 0
Nextera Energy, Inc. Stock 65339F101   25,926,691 426,847 SH   SOLE 0 426,847 0 0
Tesla Motors, Inc. Stock 88160R101   586,413 2,360 SH   SOLE 0 2,360 0 0
Linde Plc Com Stock G54950103   287,086 699 SH   SOLE 0 699 0 0
Thor Industries, Inc. Stock 885160101   247,379 2,092 SH   SOLE 0 2,092 0 0
Moog Inc. Class A Stock 615394202   7,765,111 53,634 SH   SOLE 0 53,633 0 0
Arch Cap Group Ltd Ord Stock G0450A105   456,241 6,143 SH   SOLE 0 6,143 0 0
Vanguard S&P 500 Index Fund ETF 922908363   274,310 628 SH   SOLE 0 628 0 0
Astrazeneca Plc Sponsored Adr ADR 046353108   236,870 3,517 SH   SOLE 0 3,517 0 0
Oncternal Therapeutics Inc Com Stock 68236P206   16,199 30,211 SH   SOLE 0 30,211 0 0
Booz Allen Hamilton Holding Corporation Class A Stock 099502106   35,642,658 278,654 SH   SOLE 0 278,654 0 0
Teradyne, Inc. Stock 880770102   217,040 2,000 SH   SOLE 0 2,000 0 0
Anterix Inc Com Stock 03676C100   330,868 9,930 SH   SOLE 0 9,930 0 0
Ishares Russell Top 200 Etf ETF 464289446   690,540 6,000 SH   SOLE 0 6,000 0 0
Wabtec Corporation Stock 929740108   30,137,500 237,490 SH   SOLE 0 237,490 0 0
Eli Lilly And Company Stock 532457108   2,129,990 3,654 SH   SOLE 0 3,654 0 0
Vanguard Russell 1000 Value Index Fund ETF 92206C714   1,585,579 21,858 SH   SOLE 0 21,858 0 0
Ishares Russell 2000 Etf ETF 464287655   4,283,487 21,342 SH   SOLE 0 21,341 0 0
Aercap Holdings Nv Shs Stock N00985106   222,960 3,000 SH   SOLE 0 3,000 0 0
Carrier Global Corporation Stock 14448C104   1,812,835 31,555 SH   SOLE 0 31,555 0 0
Sysco Corporation Stock 871829107   403,312 5,515 SH   SOLE 0 5,515 0 0
Warner Music Group Corp Stock 934550203   5,780,646 161,516 SH   SOLE 0 161,515 0 0
Ii-Vi Incorporated Stock 19247G107   467,512 10,740 SH   SOLE 0 10,740 0 0
American Electric Power Company, Inc. Stock 025537101   334,464 4,118 SH   SOLE 0 4,118 0 0
Brown-Forman Corporation Class B Stock 115637209   2,449,076 42,891 SH   SOLE 0 42,891 0 0
Vanguard Small-Cap Value Index Fund ETF 922908611   255,557 1,420 SH   SOLE 0 1,420 0 0
Bentley Sys Inc Com Cl B Stock 08265T208   327,847 6,283 SH   SOLE 0 6,283 0 0
Chemed Corporation Stock 16359R103   539,140 922 SH   SOLE 0 922 0 0
Eastern Bankshares Inc Com Stock 27627N105   153,090 10,781 SH   SOLE 0 10,781 0 0
Regeneron Pharmaceuticals, Inc. Stock 75886F107   244,165 278 SH   SOLE 0 278 0 0
Atlassian Corporation Stock 049468101   317,781 1,336 SH   SOLE 0 1,336 0 0
Xylem Inc. Stock 98419M100   354,516 3,100 SH   SOLE 0 3,100 0 0
Cambridge Bancorp Com Stock 132152109   840,226 12,107 SH   SOLE 0 12,107 0 0
Visa Inc. Class A Stock 92826C839   53,418,797 205,181 SH   SOLE 0 205,180 0 0
Hershey Company Stock 427866108   941,522 5,050 SH   SOLE 0 5,050 0 0
Vanguard Growth Index Fund ETF 922908736   2,512,359 8,081 SH   SOLE 0 8,081 0 0
Ads Tec Energy Plc Shs Stock G0085J117   107,250 15,000 SH   SOLE 0 15,000 0 0
American Tower Corporation REIT 03027X100   36,295,724 168,129 SH   SOLE 0 168,129 0 0
Ishares Core S&P Total U.S. Stock Market Etf ETF 464287150   419,131 3,983 SH   SOLE 0 3,983 0 0
Meta Platforms Inc. Stock 30303M102   41,720,557 117,868 SH   SOLE 0 117,868 0 0
Asml Holding Nv Adr ADR N07059210   250,541 331 SH   SOLE 0 331 0 0
Lpl Finl Hldgs Inc Com Stock 50212V100   1,014,047 4,455 SH   SOLE 0 4,455 0 0
Aspen Technology Inc Com Stock 29109X106   205,400 933 SH   SOLE 0 933 0 0
Palo Alto Networks, Inc. Stock 697435105   246,520 836 SH   SOLE 0 836 0 0
Epam Sys Inc Com Stock 29414B104   21,943,395 73,799 SH   SOLE 0 73,799 0 0
Haleon Plc Spon Ads ADR 405552100   103,558 12,583 SH   SOLE 0 12,583 0 0
Mondelez Intl Inc. Class A Stock 609207105   4,801,964 66,298 SH   SOLE 0 66,298 0 0
Broadcom Limited Stock 11135F101   11,111,787 9,955 SH   SOLE 0 9,954 0 0
Canadian Pacific Railway Limited Stock 13646K108   238,840 3,021 SH   SOLE 0 3,021 0 0
Ishares Core Msci Eafe Etf ETF 46432F842   243,974 3,468 SH   SOLE 0 3,468 0 0
Accenture Plc Stock G1151C101   802,531 2,287 SH   SOLE 0 2,287 0 0
Equifax Inc. Stock 294429105   321,477 1,300 SH   SOLE 0 1,300 0 0
Nice Systems Ltd. Sponsored Adr ADR 653656108   798,040 4,000 SH   SOLE 0 4,000 0 0
Nvidia Corporation Stock 67066G104   1,009,818 2,039 SH   SOLE 0 2,039 0 0
Abbvie, Inc. Stock 00287Y109   418,574 2,701 SH   SOLE 0 2,701 0 0
S&P Global Inc. Stock 78409V104   38,159,774 86,624 SH   SOLE 0 86,624 0 0
Cabot Oil & Gas Corporation Stock 127097103   545,720 21,384 SH   SOLE 0 21,384 0 0
Lennox Intl Inc Com Stock 526107107   283,728 634 SH   SOLE 0 634 0 0
Icon Plc Shs Stock G4705A100   214,284 757 SH   SOLE 0 757 0 0
Taiwan Semiconductor Manufacturing Co., Ltd. Sponsored Adr ADR 874039100   511,680 4,920 SH   SOLE 0 4,920 0 0
Blackstone Group L.P. Stock 09260D107   56,673,922 432,890 SH   SOLE 0 432,889 0 0
Ansys, Inc. Stock 03662Q105   254,379 701 SH   SOLE 0 701 0 0
Factset Resh Sys Inc Com Stock 303075105   512,829 1,075 SH   SOLE 0 1,075 0 0
Simpson Mfg Inc Com Stock 829073105   507,027 2,561 SH   SOLE 0 2,561 0 0
Stryker Corporation Stock 863667101   459,072 1,533 SH   SOLE 0 1,533 0 0
General Dynamics Corporation Stock 369550108   415,472 1,600 SH   SOLE 0 1,600 0 0
Mcdonald'S Corporation Stock 580135101   644,954 2,175 SH   SOLE 0 2,175 0 0
Cisco Systems, Inc. Stock 17275R102   841,668 16,660 SH   SOLE 0 16,660 0 0
Autodesk, Inc. Stock 052769106   18,770,117 77,091 SH   SOLE 0 77,091 0 0
Vanguard Intermediate Term Bond Index Fund ETF 921937819   2,234,475 29,255 SH   SOLE 0 29,254 0 0
Charter Communications, Inc. Class A Stock 16119P108   34,726,226 89,344 SH   SOLE 0 89,344 0 0
Gaming And Leisure Properties, Inc. REIT 36467J108   4,375,755 88,668 SH   SOLE 0 88,667 0 0
Ambev Sa Sponsored Adr ADR 02319V103   45,976 16,420 SH   SOLE 0 16,420 0 0
Ishares Core S&P 500 Etf ETF 464287200   9,511,605 19,914 SH   SOLE 0 19,914 0 0
Mettler-Toledo International Inc. Stock 592688105   715,646 590 SH   SOLE 0 590 0 0
Siteone Landscape Supply Inc Com Stock 82982L103   703,300 4,328 SH   SOLE 0 4,328 0 0
Union Pacific Corporation Stock 907818108   1,655,233 6,739 SH   SOLE 0 6,739 0 0
Carmax Inc Com Stock 143130102   19,560,796 254,897 SH   SOLE 0 254,897 0 0
Charles Riv Labs Intl Inc Com Stock 159864107   227,417 962 SH   SOLE 0 962 0 0
Salesforce.Com, Inc. Stock 79466L302   36,305,689 137,971 SH   SOLE 0 137,971 0 0
Idexx Laboratories, Inc. Stock 45168D104   603,894 1,088 SH   SOLE 0 1,088 0 0
Thermo Fisher Scientific Inc. Stock 883556102   31,489,197 59,325 SH   SOLE 0 59,325 0 0
Lockheed Martin Corporation Stock 539830109   2,829,318 6,242 SH   SOLE 0 6,242 0 0
Jpmorgan Chase & Co. Stock 46625H100   3,279,015 19,277 SH   SOLE 0 19,276 0 0
Pros Holdings Inc Com Stock 74346Y103   464,433 11,973 SH   SOLE 0 11,973 0 0
Chevron Corporation Stock 166764100   1,068,692 7,165 SH   SOLE 0 7,164 0 0
Conocophillips Stock 20825C104   294,237 2,535 SH   SOLE 0 2,535 0 0
Vanguard Ftse Developed Markets Etf ETF 921943858   1,907,905 39,831 SH   SOLE 0 39,831 0 0
Danaher Corporation Stock 235851102   2,960,495 12,797 SH   SOLE 0 12,797 0 0
Wal-Mart Stores, Inc. Stock 931142103   853,925 5,417 SH   SOLE 0 5,416 0 0
Oracle Corporation Stock 68389X105   6,314,028 59,888 SH   SOLE 0 59,888 0 0
Raytheon Technologies Corporation Stock 75513E101   1,260,081 14,976 SH   SOLE 0 14,976 0 0
Vanguard Ftse Emerging Markets Etf ETF 922042858   3,407,683 82,912 SH   SOLE 0 82,912 0 0
Texas Instruments Incorporated Stock 882508104   367,512 2,156 SH   SOLE 0 2,156 0 0
Pfizer Inc. Stock 717081103   286,672 9,957 SH   SOLE 0 9,957 0 0
Morgan Stanley Stock 617446448   4,906,360 52,615 SH   SOLE 0 52,615 0 0
Caterpillar Inc. Stock 149123101   1,302,917 4,407 SH   SOLE 0 4,406 0 0
Alphabet Inc. Class C Stock 02079K107   6,969,834 49,456 SH   SOLE 0 49,456 0 0
American Express Company Stock 025816109   34,119,283 182,125 SH   SOLE 0 182,124 0 0
Amgen Inc. Stock 031162100   484,450 1,682 SH   SOLE 0 1,682 0 0
Applied Materials, Inc. Stock 038222105   5,700,209 35,171 SH   SOLE 0 35,171 0 0
Otis Worldwide Corporation Stock 68902V107   3,922,995 43,847 SH   SOLE 0 43,847 0 0
Analog Devices, Inc. Stock 032654105   482,275 2,429 SH   SOLE 0 2,428 0 0
Williams Companies, Inc. Stock 969457100   4,885,287 140,261 SH   SOLE 0 140,260 0 0
Mercadolibre Inc Com Stock 58733R102   201,157 128 SH   SOLE 0 128 0 0
Vanguard Dividend Appreciation Index Fund ETF 921908844   774,770 4,547 SH   SOLE 0 4,546 0 0
Healthequity Inc Stock 42226A107   27,618,657 416,571 SH   SOLE 0 416,571 0 0
Trimble Inc. Stock 896239100   266,266 5,005 SH   SOLE 0 5,005 0 0
Badger Meter Inc Com Stock 056525108   432,699 2,803 SH   SOLE 0 2,803 0 0
Vanguard Short-Term Bond Index Fund ETF 921937827   885,961 11,503 SH   SOLE 0 11,503 0 0
Littelfuse, Inc. Stock 537008104   301,808 1,128 SH   SOLE 0 1,128 0 0
Philip Morris International Inc. Stock 718172109   1,215,805 12,923 SH   SOLE 0 12,923 0 0
Pnc Financial Services Group, Inc. Stock 693475105   355,690 2,297 SH   SOLE 0 2,297 0 0
Bristol-Myers Squibb Company Stock 110122108   418,997 8,166 SH   SOLE 0 8,166 0 0
W R Berkley Corporation Com Stock 084423102   218,949 3,096 SH   SOLE 0 3,096 0 0
Altria Group, Inc. Stock 02209S103   534,938 13,261 SH   SOLE 0 13,260 0 0
Loews Corp Com Stock 540424108   723,249 10,393 SH   SOLE 0 10,393 0 0
Cadence Design System Inc Com Stock 127387108   215,717 792 SH   SOLE 0 792 0 0
Agilent Technologies, Inc. Stock 00846U101   305,171 2,195 SH   SOLE 0 2,195 0 0
Exxon Mobil Corporation Stock 30231G102   328,719 3,288 SH   SOLE 0 3,287 0 0
Unitedhealth Group Incorporated Stock 91324P102   43,721,334 83,046 SH   SOLE 0 83,046 0 0
Travelers Companies, Inc. Stock 89417E109   1,015,312 5,330 SH   SOLE 0 5,330 0 0
Deere & Company Stock 244199105   337,090 843 SH   SOLE 0 843 0 0
Novo Nordisk A/S Sponsored Adr Class B ADR 670100205   256,039 2,475 SH   SOLE 0 2,475 0 0
Paypal Holdings Inc. Stock 70450Y103   16,443,449 267,765 SH   SOLE 0 267,765 0 0
Charles Schwab Corporation Stock 808513105   47,013,136 683,330 SH   SOLE 0 683,330 0 0
Toronto-Dominion Bank Stock 891160509   516,960 8,000 SH   SOLE 0 8,000 0 0
Blackrock, Inc. Stock 09247X101   677,041 834 SH   SOLE 0 834 0 0
Apple Inc. Stock 037833100   53,488,308 277,818 SH   SOLE 0 277,818 0 0
Abbott Laboratories Stock 002824100   7,050,050 64,051 SH   SOLE 0 64,050 0 0
Walt Disney Company Stock 254687106   490,313 5,430 SH   SOLE 0 5,430 0 0
Booking Holdings Inc Stock 09857L108   30,720,699 8,661 SH   SOLE 0 8,660 0 0
Ishares Russell 1000 Etf ETF 464287622   223,501 852 SH   SOLE 0 852 0 0
Ishares Russell 1000 Value Etf ETF 464287598   4,512,723 27,308 SH   SOLE 0 27,308 0 0
Ferrari N V Com Stock N3167Y103   210,503 622 SH   SOLE 0 622 0 0