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
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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
Amazon.com, Inc. Stock 023135106 56,916 18,076 SH   SOLE 0 18,076 0 0
Stericycle, Inc. Stock 858912108 903 14,325 SH   SOLE 0 14,325 0 0
Starbucks Corporation Stock 855244109 841 9,783 SH   SOLE 0 9,782 0 0
iShares Gold Trust ETF 464285105 789 43,875 SH   SOLE 0 43,875 0 0
Willis Towers Watson Plc Ltd Shs Stock G96629103 958 4,590 SH   SOLE 0 4,590 0 0
Johnson & Johnson Stock 478160104 3,999 26,861 SH   SOLE 0 26,861 0 0
Costco Wholesale Corporation Stock 22160K105 398 1,121 SH   SOLE 0 1,121 0 0
Cabot Corporation Stock 127055101 2,770 76,884 SH   SOLE 0 76,884 0 0
iShares MSCI Emerging Markets ETF ETF 464287234 1,918 43,495 SH   SOLE 0 43,495 0 0
Scotts Miracle-Gro Co. Stock 810186106 300 1,961 SH   SOLE 0 1,961 0 0
Boston Scientific Corporation Stock 101137107 25,106 657,063 SH   SOLE 0 657,063 0 0
Procter & Gamble Company Stock 742718109 1,174 8,448 SH   SOLE 0 8,448 0 0
Coca-Cola Company Stock 191216100 1,406 28,470 SH   SOLE 0 28,470 0 0
United Parcel Service, Inc. Class B Stock 911312106 560 3,360 SH   SOLE 0 3,360 0 0
PowerShares DB Commodity Index Tracking Fund ETF 46138B103 1,057 80,900 SH   SOLE 0 80,900 0 0
Cabot Microelectronics Corporation Stock 12571T100 4,119 28,840 SH   SOLE 0 28,840 0 0
Intel Corporation Stock 458140100 666 12,853 SH   SOLE 0 12,853 0 0
CME Group Inc. Class A Stock 12572Q105 20,401 121,935 SH   SOLE 0 121,934 0 0
State Street Corporation Stock 857477103 522 8,800 SH   SOLE 0 8,800 0 0
Medtronic Plc Stock G5960L103 579 5,570 SH   SOLE 0 5,570 0 0
Fortive Corp. Stock 34959J108 23,237 304,905 SH   SOLE 0 304,905 0 0
Netflix, Inc. Stock 64110L106 1,389 2,777 SH   SOLE 0 2,777 0 0
Paychex, Inc. Stock 704326107 939 11,770 SH   SOLE 0 11,770 0 0
Pool Corporation Com Stock 73278L105 564 1,687 SH   SOLE 0 1,687 0 0
Estee Lauder Companies Inc. Class A Stock 518439104 289 1,323 SH   SOLE 0 1,323 0 0
Merck & Co., Inc. Stock 58933Y105 1,282 15,451 SH   SOLE 0 15,451 0 0
SPDR S&P 500 ETF Trust ETF 78462F103 5,470 16,332 SH   SOLE 0 16,332 0 0
MasterCard Incorporated Class A Stock 57636Q104 393 1,163 SH   SOLE 0 1,163 0 0
First Republic Bank Stock 33616C100 19,655 180,220 SH   SOLE 0 180,220 0 0
Diageo plc Sponsored ADR ADR 25243Q205 585 4,248 SH   SOLE 0 4,248 0 0
Vertex Pharmaceuticals Incorporated Stock 92532F100 1,253 4,603 SH   SOLE 0 4,603 0 0
Verizon Communications Inc. Stock 92343V104 1,737 29,191 SH   SOLE 0 29,191 0 0
Chubb Limited Stock H1467J104 217 1,871 SH   SOLE 0 1,871 0 0
FedEx Corporation Stock 31428X106 1,484 5,900 SH   SOLE 0 5,900 0 0
Sherwin-Williams Company Stock 824348106 33,448 48,007 SH   SOLE 0 48,006 0 0
PepsiCo, Inc. Stock 713448108 511 3,689 SH   SOLE 0 3,689 0 0
Honeywell International Inc. Stock 438516106 1,834 11,143 SH   SOLE 0 11,142 0 0
Ingersoll-Rand Plc Stock G8994E103 230 1,900 SH   SOLE 0 1,900 0 0
Home Depot, Inc. Stock 437076102 20,980 75,547 SH   SOLE 0 75,547 0 0
Baxter International Inc. Stock 071813109 765 9,510 SH   SOLE 0 9,510 0 0
Automatic Data Processing, Inc. Stock 053015103 1,121 8,035 SH   SOLE 0 8,035 0 0
Canntrust Hldgs Inc Shs Stock 137800207 11 40,000 SH   SOLE 0 40,000 0 0
Cooper Cos Inc Com New Stock 216648402 208 616 SH   SOLE 0 616 0 0
Infosys Ltd Sponsored Adr ADR 456788108 197 14,238 SH   SOLE 0 14,238 0 0
Becton, Dickinson and Company Stock 075887109 1,637 7,035 SH   SOLE 0 7,034 0 0
Broadridge Financial Solutions, Inc. Stock 11133T103 1,393 10,552 SH   SOLE 0 10,552 0 0
iShares Russell 1000 Growth ETF ETF 464287614 273 1,258 SH   SOLE 0 1,258 0 0
Steris Plc Stock G8473T100 1,263 7,168 SH   SOLE 0 7,168 0 0
Banco Bilbao Vizcaya Argentaria, S.A. Sponsored ADR ADR 05946K101 35 12,877 SH   SOLE 0 12,877 0 0
Waste Connections, Inc. Stock 94106B101 28,660 276,108 SH   SOLE 0 276,108 0 0
Berkshire Hathaway Inc. Class B Stock 084670702 2,097 9,846 SH   SOLE 0 9,846 0 0
Adobe Systems Incorporated Stock 00724F101 1,481 3,019 SH   SOLE 0 3,019 0 0
Alphabet Inc. Class A Stock 02079K305 36,624 24,989 SH   SOLE 0 24,989 0 0
Fiserv Inc Com Stock 337738108 830 8,050 SH   SOLE 0 8,050 0 0
O'Reilly Automotive, Inc. Stock 67103H107 638 1,383 SH   SOLE 0 1,383 0 0
Constellation Brands, Inc. Class A Stock 21036P108 441 2,327 SH   SOLE 0 2,326 0 0
Comcast Corporation Class A Stock 20030N101 2,377 51,392 SH   SOLE 0 51,392 0 0
Generac Holdings Inc. Stock 368736104 620 3,200 SH   SOLE 0 3,200 0 0
Microsoft Corporation Stock 594918104 37,580 178,670 SH   SOLE 0 178,669 0 0
Docusign Inc Com Stock 256163106 251 1,164 SH   SOLE 0 1,164 0 0
Schlumberger NV Stock 806857108 340 21,838 SH   SOLE 0 21,838 0 0
Ameriprise Financial, Inc. Stock 03076C106 266 1,728 SH   SOLE 0 1,728 0 0
Brown & Brown Inc Com Stock 115236101 610 13,475 SH   SOLE 0 13,475 0 0
Berkshire Hathaway Inc. Class A Stock 084670108 320 1 SH   SOLE 0 1 0 0
Boeing Company Stock 097023105 702 4,250 SH   SOLE 0 4,250 0 0
Vanguard Mid-Cap Index Fund ETF 922908629 1,144 6,488 SH   SOLE 0 6,488 0 0
NextEra Energy, Inc. Stock 65339F101 442 1,593 SH   SOLE 0 1,593 0 0
NIKE, Inc. Class B Stock 654106103 284 2,265 SH   SOLE 0 2,265 0 0
Msci Inc Com Stock 55354G100 241 675 SH   SOLE 0 675 0 0
Itau Unibanco Holding S.A. Sponsored ADR Pfd ADR 465562106 43 10,753 SH   SOLE 0 10,753 0 0
Vanguard Information Technology Index Fund ETF 92204A702 1,729 5,550 SH   SOLE 0 5,550 0 0
Amphenol Corporation Class A Stock 032095101 352 3,247 SH   SOLE 0 3,247 0 0
Moog Inc. Class A Stock 615394202 858 13,500 SH   SOLE 0 13,500 0 0
Oncternal Therapeutics Inc Com Stock 68236P107 119 70,211 SH   SOLE 0 70,211 0 0
Western Union Company Stock 959802109 678 31,656 SH   SOLE 0 31,656 0 0
Booz Allen Hamilton Holding Corporation Class A Stock 099502106 18,367 221,337 SH   SOLE 0 221,336 0 0
Teradyne, Inc. Stock 880770102 230 2,898 SH   SOLE 0 2,898 0 0
Zogenix Inc Com New Stock 98978L204 291 16,250 SH   SOLE 0 16,250 0 0
Booking Holdings Inc. Stock 09857L108 16,532 9,664 SH   SOLE 0 9,664 0 0
Leidos Holdings, Inc. Stock 525327102 23,769 266,613 SH   SOLE 0 266,612 0 0
Vanguard Russell 1000 Value Index Fund ETF 92206C714 1,134 10,929 SH   SOLE 0 10,929 0 0
Vanguard Total International Stock ETF ETF 921909768 640 12,268 SH   SOLE 0 12,268 0 0
iShares Russell 2000 ETF ETF 464287655 616 4,115 SH   SOLE 0 4,115 0 0
Twilio Inc. Class A Stock 90138F102 13,413 54,284 SH   SOLE 0 54,284 0 0
Sysco Corporation Stock 871829107 975 15,675 SH   SOLE 0 15,675 0 0
Ishares Floating Rate Bond Etf ETF 46429B655 2,242 44,200 SH   SOLE 0 44,200 0 0
II-VI Incorporated Stock 902104108 436 10,740 SH   SOLE 0 10,740 0 0
Landstar Sys Inc Com Stock 515098101 251 2,000 SH   SOLE 0 2,000 0 0
Xylem Inc. Stock 98419M100 261 3,100 SH   SOLE 0 3,100 0 0
Cambridge Bancorp Com Stock 132152109 644 12,107 SH   SOLE 0 12,107 0 0
Neogen Corporation Stock 640491106 470 6,000 SH   SOLE 0 6,000 0 0
Visa Inc. Class A Stock 92826C839 43,168 215,873 SH   SOLE 0 215,873 0 0
Post Hldgs Inc Com Stock 737446104 297 3,450 SH   SOLE 0 3,450 0 0
SVB Financial Group Stock 78486Q101 279 1,160 SH   SOLE 0 1,160 0 0
Vanguard Growth Index Fund ETF 922908736 2,701 11,868 SH   SOLE 0 11,867 0 0
Phillips 66 Stock 718546104 2,443 47,118 SH   SOLE 0 47,118 0 0
American Tower Corporation REIT 03027X100 32,743 135,453 SH   SOLE 0 135,452 0 0
Facebook, Inc. Class A Stock 30303M102 18,077 69,021 SH   SOLE 0 69,021 0 0
Lpl Finl Hldgs Inc Com Stock 50212V100 449 5,850 SH   SOLE 0 5,850 0 0
Mondelez Intl Inc. Class A Stock 609207105 1,375 23,929 SH   SOLE 0 23,928 0 0
Broadcom Limited Stock 11135F101 2,214 6,078 SH   SOLE 0 6,078 0 0
UniFirst Corporation Stock 904708104 410 2,167 SH   SOLE 0 2,167 0 0
Novartis AG Sponsored ADR ADR 66987V109 314 3,615 SH   SOLE 0 3,615 0 0
Accenture Plc Stock G1151C101 554 2,450 SH   SOLE 0 2,450 0 0
Equifax Inc. Stock 294429105 204 1,300 SH   SOLE 0 1,300 0 0
NICE Systems Ltd. Sponsored ADR ADR 653656108 1,635 7,200 SH   SOLE 0 7,200 0 0
S&P Global Inc. Stock 78409V104 20,961 58,128 SH   SOLE 0 58,127 0 0
SPDR S&P Biotech ETF ETF 78464A870 203 1,820 SH   SOLE 0 1,820 0 0
iShares Core MSCI Emerging Markets ETF ETF 46434G103 396 7,500 SH   SOLE 0 7,500 0 0
Cabot Oil & Gas Corporation Stock 127097103 371 21,384 SH   SOLE 0 21,384 0 0
PTC Inc. Stock 69370C100 342 4,131 SH   SOLE 0 4,131 0 0
Zoetis, Inc. Class A Stock 98978V103 22,744 137,535 SH   SOLE 0 137,534 0 0
Taiwan Semiconductor Manufacturing Co., Ltd. Sponsored ADR ADR 874039100 504 6,221 SH   SOLE 0 6,221 0 0
Artisan Partners Asset Mgmt In Cl A Stock 04316A108 345 8,850 SH   SOLE 0 8,850 0 0
Blackstone Group L.P. Stock 09260D107 36,019 690,022 SH   SOLE 0 690,022 0 0
ANSYS, Inc. Stock 03662Q105 651 1,990 SH   SOLE 0 1,990 0 0
Church & Dwight Co., Inc. Stock 171340102 469 5,000 SH   SOLE 0 5,000 0 0
Stryker Corporation Stock 863667101 914 4,385 SH   SOLE 0 4,385 0 0
General Dynamics Corporation Stock 369550108 221 1,600 SH   SOLE 0 1,600 0 0
McDonald's Corporation Stock 580135101 472 2,150 SH   SOLE 0 2,150 0 0
Dover Corporation Stock 260003108 233 2,151 SH   SOLE 0 2,151 0 0
Cisco Systems, Inc. Stock 17275R102 1,093 27,750 SH   SOLE 0 27,750 0 0
Vanguard Intermediate Term Bond Index Fund ETF 921937819 2,926 31,305 SH   SOLE 0 31,305 0 0
Science Applications International Corp. Stock 808625107 970 12,372 SH   SOLE 0 12,371 0 0
RE/MAX Holdings, Inc. Stock 75524W108 17,962 548,789 SH   SOLE 0 548,788 0 0
Charter Communications, Inc. Class A Stock 16119P108 33,829 54,184 SH   SOLE 0 54,184 0 0
Gaming and Leisure Properties, Inc. REIT 36467J108 1,438 38,946 SH   SOLE 0 38,946 0 0
Ambev SA Sponsored ADR ADR 02319V103 31 13,745 SH   SOLE 0 13,745 0 0
iShares Core S&P 500 ETF ETF 464287200 5,570 16,574 SH   SOLE 0 16,574 0 0
Mettler-Toledo International Inc. Stock 592688105 21,175 21,926 SH   SOLE 0 21,926 0 0
Siteone Landscape Supply Inc Com Stock 82982L103 604 4,949 SH   SOLE 0 4,949 0 0
Union Pacific Corporation Stock 907818108 213 1,081 SH   SOLE 0 1,081 0 0
Ecolab Inc. Stock 278865100 249 1,245 SH   SOLE 0 1,245 0 0
Charles Riv Labs Intl Inc Com Stock 159864107 226 997 SH   SOLE 0 997 0 0
salesforce.com, inc. Stock 79466L302 29,931 119,095 SH   SOLE 0 119,095 0 0
Northrop Grumman Corporation Stock 666807102 655 2,075 SH   SOLE 0 2,075 0 0
IDEXX Laboratories, Inc. Stock 45168D104 1,906 4,848 SH   SOLE 0 4,848 0 0
Thermo Fisher Scientific Inc. Stock 883556102 28,086 63,611 SH   SOLE 0 63,611 0 0
JPMorgan Chase & Co. Stock 46625H100 2,568 26,679 SH   SOLE 0 26,678 0 0
Markel Corp Com Stock 570535104 234 240 SH   SOLE 0 240 0 0
Vanguard FTSE Developed Markets ETF ETF 921943858 2,550 62,356 SH   SOLE 0 62,356 0 0
Danaher Corporation Stock 235851102 5,724 26,580 SH   SOLE 0 26,580 0 0
Raytheon Technologies Corporation Stock 75513E101 783 13,611 SH   SOLE 0 13,611 0 0
Vanguard FTSE Emerging Markets ETF ETF 922042858 2,686 62,108 SH   SOLE 0 62,107 0 0
Texas Instruments Incorporated Stock 882508104 257 1,800 SH   SOLE 0 1,800 0 0
Vanguard High Dividend Yield Index Fund ETF 921946406 537 6,641 SH   SOLE 0 6,641 0 0
3M Company Stock 88579Y101 825 5,151 SH   SOLE 0 5,151 0 0
2U Inc Com Stock 90214J101 203 6,000 SH   SOLE 0 6,000 0 0
Alphabet Inc. Class C Stock 02079K107 3,461 2,355 SH   SOLE 0 2,355 0 0
American Express Company Stock 025816109 718 7,158 SH   SOLE 0 7,158 0 0
Amgen Inc. Stock 031162100 4,161 16,370 SH   SOLE 0 16,370 0 0
Applied Materials, Inc. Stock 038222105 2,282 38,383 SH   SOLE 0 38,383 0 0
Analog Devices, Inc. Stock 032654105 230 1,972 SH   SOLE 0 1,971 0 0
Williams Companies, Inc. Stock 969457100 426 21,682 SH   SOLE 0 21,681 0 0
IHS Markit Ltd. Stock G47567105 1,176 14,980 SH   SOLE 0 14,980 0 0
Vanguard Dividend Appreciation Index Fund ETF 921908844 419 3,260 SH   SOLE 0 3,260 0 0
HealthEquity Inc Stock 42226A107 14,495 282,168 SH   SOLE 0 282,168 0 0
IPG Photonics Corporation Stock 44980X109 680 4,000 SH   SOLE 0 4,000 0 0
Alibaba Group Holding Ltd. Sponsored ADR ADR 01609W102 33,432 113,721 SH   SOLE 0 113,721 0 0
C.H. Robinson Worldwide, Inc. Stock 12541W209 720 7,050 SH   SOLE 0 7,050 0 0
Vanguard Short-Term Bond Index Fund ETF 921937827 1,044 12,565 SH   SOLE 0 12,565 0 0
Hillenbrand Inc Com Stock 431571108 605 21,350 SH   SOLE 0 21,350 0 0
Roper Technologies, Inc. Stock 776696106 241 609 SH   SOLE 0 609 0 0
Bristol-Myers Squibb Company Stock 110122108 311 5,160 SH   SOLE 0 5,160 0 0
American Water Works Company, Inc. Stock 030420103 27,773 191,696 SH   SOLE 0 191,696 0 0
Exxon Mobil Corporation Stock 30231G102 2,259 65,814 SH   SOLE 0 65,814 0 0
UnitedHealth Group Incorporated Stock 91324P102 24,364 78,149 SH   SOLE 0 78,148 0 0
Lowe's Companies, Inc. Stock 548661107 608 3,668 SH   SOLE 0 3,668 0 0
Glaukos Corp Com Stock 377322102 271 5,465 SH   SOLE 0 5,465 0 0
PayPal Holdings Inc. Stock 70450Y103 44,097 223,810 SH   SOLE 0 223,810 0 0
Charles Schwab Corporation Stock 808513105 14,878 410,662 SH   SOLE 0 410,661 0 0
Apple Inc. Stock 037833100 47,248 407,975 SH   SOLE 0 407,974 0 0
Abbott Laboratories Stock 002824100 4,300 39,507 SH   SOLE 0 39,506 0 0
Walt Disney Company Stock 254687106 1,035 8,343 SH   SOLE 0 8,342 0 0
iShares Russell 1000 ETF ETF 464287622 266 1,419 SH   SOLE 0 1,419 0 0
Marsh & McLennan Companies, Inc. Stock 571748102 20,358 177,488 SH   SOLE 0 177,488 0 0
iShares Russell 1000 Value ETF ETF 464287598 2,219 18,784 SH   SOLE 0 18,784 0 0