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
Amazon.com, Inc. Stock 023135106 65,737 20,011 SH   SOLE 0 20,011 0 0
Stericycle, Inc. Stock 858912108 315 4,635 SH   SOLE 0 4,635 0 0
Starbucks Corporation Stock 855244109 1,219 11,055 SH   SOLE 0 11,054 0 0
iShares Gold Trust ETF 464285204 1,176 35,187 SH   SOLE 0 35,187 0 0
Willis Towers Watson Plc Ltd Shs Stock G96629103 523 2,250 SH   SOLE 0 2,250 0 0
Johnson & Johnson Stock 478160104 8,044 49,811 SH   SOLE 0 49,810 0 0
Costco Wholesale Corporation Stock 22160K105 411 915 SH   SOLE 0 914 0 0
Cabot Corporation Stock 127055101 3,415 68,144 SH   SOLE 0 68,144 0 0
iShares MSCI Emerging Markets ETF ETF 464287234 2,427 48,175 SH   SOLE 0 48,175 0 0
Goldman Sachs Group, Inc. Stock 38141G104 268 709 SH   SOLE 0 709 0 0
Scotts Miracle-Gro Co. Stock 810186106 287 1,961 SH   SOLE 0 1,961 0 0
Boston Scientific Corporation Stock 101137107 429 9,896 SH   SOLE 0 9,896 0 0
Procter & Gamble Company Stock 742718109 5,402 38,637 SH   SOLE 0 38,637 0 0
Coca-Cola Company Stock 191216100 2,675 50,981 SH   SOLE 0 50,980 0 0
PowerShares DB Commodity Index Tracking Fund ETF 46138B103 1,633 80,900 SH   SOLE 0 80,900 0 0
Cabot Microelectronics Corporation Stock 12571T100 2,520 20,450 SH   SOLE 0 20,450 0 0
Intel Corporation Stock 458140100 212 3,981 SH   SOLE 0 3,981 0 0
Boston Beer Inc Cl A Stock 100557107 459 900 SH   SOLE 0 900 0 0
CME Group Inc. Class A Stock 12572Q105 27,377 141,569 SH   SOLE 0 141,569 0 0
State Street Corporation Stock 857477103 491 5,800 SH   SOLE 0 5,800 0 0
Medtronic Plc Stock G5960L103 671 5,357 SH   SOLE 0 5,357 0 0
Fortive Corp. Stock 34959J108 31,748 449,881 SH   SOLE 0 449,881 0 0
Netflix, Inc. Stock 64110L106 31,292 51,269 SH   SOLE 0 51,269 0 0
Paychex, Inc. Stock 704326107 1,618 14,390 SH   SOLE 0 14,390 0 0
Integer Holdings Corporation Stock 45826H109 28,839 322,800 SH   SOLE 0 322,800 0 0
Pool Corporation Com Stock 73278L105 733 1,687 SH   SOLE 0 1,687 0 0
Estee Lauder Companies Inc. Class A Stock 518439104 371 1,238 SH   SOLE 0 1,238 0 0
Merck & Co., Inc. Stock 58933Y105 810 10,782 SH   SOLE 0 10,782 0 0
SPDR S&P 500 ETF Trust ETF 78462F103 6,439 15,004 SH   SOLE 0 15,003 0 0
Nordson Corp Com Stock 655663102 247 1,037 SH   SOLE 0 1,037 0 0
Diageo plc Sponsored ADR ADR 25243Q205 278 1,440 SH   SOLE 0 1,440 0 0
Vertex Pharmaceuticals Incorporated Stock 92532F100 440 2,423 SH   SOLE 0 2,423 0 0
Verizon Communications Inc. Stock 92343V104 667 12,351 SH   SOLE 0 12,351 0 0
Chubb Limited Stock H1467J104 373 2,150 SH   SOLE 0 2,149 0 0
Penn Natl Gaming Inc Com Stock 707569109 267 3,690 SH   SOLE 0 3,690 0 0
FedEx Corporation Stock 31428X106 423 1,930 SH   SOLE 0 1,930 0 0
Sherwin-Williams Company Stock 824348106 37,783 135,070 SH   SOLE 0 135,069 0 0
Honeywell International Inc. Stock 438516106 2,720 12,813 SH   SOLE 0 12,813 0 0
Ingersoll-Rand Plc Stock G8994E103 233 1,350 SH   SOLE 0 1,350 0 0
U.S. Bancorp Stock 902973304 244 4,100 SH   SOLE 0 4,100 0 0
Xcel Energy Inc. Stock 98389B100 243 3,885 SH   SOLE 0 3,885 0 0
Home Depot, Inc. Stock 437076102 36,251 110,433 SH   SOLE 0 110,432 0 0
Baxter International Inc. Stock 071813109 397 4,930 SH   SOLE 0 4,930 0 0
Automatic Data Processing, Inc. Stock 053015103 2,760 13,804 SH   SOLE 0 13,804 0 0
Canntrust Hldgs Inc Shs Stock 137800207 6 40,000 SH   SOLE 0 40,000 0 0
Cooper Cos Inc Com New Stock 216648402 255 616 SH   SOLE 0 616 0 0
Broadridge Financial Solutions, Inc. Stock 11133T103 2,947 17,684 SH   SOLE 0 17,683 0 0
iShares Russell 1000 Growth ETF ETF 464287614 210 766 SH   SOLE 0 765 0 0
Laboratory Corporation of America Holdings Stock 50540R409 288 1,025 SH   SOLE 0 1,025 0 0
Steris Plc Stock G8473T100 2,644 12,943 SH   SOLE 0 12,943 0 0
Waste Connections, Inc. Stock 94106B101 39,118 310,631 SH   SOLE 0 310,630 0 0
Berkshire Hathaway Inc. Class B Stock 084670702 1,691 6,196 SH   SOLE 0 6,196 0 0
Adobe Systems Incorporated Stock 00724F101 1,413 2,454 SH   SOLE 0 2,454 0 0
Alphabet Inc. Class A Stock 02079K305 70,856 26,503 SH   SOLE 0 26,503 0 0
Fiserv Inc Com Stock 337738108 741 6,830 SH   SOLE 0 6,830 0 0
O'Reilly Automotive, Inc. Stock 67103H107 34,436 56,354 SH   SOLE 0 56,354 0 0
Constellation Brands, Inc. Class A Stock 21036P108 490 2,327 SH   SOLE 0 2,327 0 0
Comcast Corporation Class A Stock 20030N101 4,147 74,145 SH   SOLE 0 74,145 0 0
Ase Technology Hldg Co Ltd Sponsored Ads ADR 00215W100 130 16,618 SH   SOLE 0 16,618 0 0
Generac Holdings Inc. Stock 368736104 1,308 3,200 SH   SOLE 0 3,200 0 0
Microsoft Corporation Stock 594918104 56,079 198,917 SH   SOLE 0 198,916 0 0
CVS Health Corporation Stock 126650100 542 6,390 SH   SOLE 0 6,390 0 0
Ameriprise Financial, Inc. Stock 03076C106 328 1,243 SH   SOLE 0 1,243 0 0
Avery Dennison Corporation Stock 053611109 311 1,500 SH   SOLE 0 1,500 0 0
Berkshire Hathaway Inc. Class A Stock 084670108 4,525 11 SH   SOLE 0 11 0 0
Copart Inc Com Stock 217204106 236 1,698 SH   SOLE 0 1,698 0 0
Vanguard Small-Cap Index Fund ETF 922908751 984 4,500 SH   SOLE 0 4,500 0 0
Vanguard Mid-Cap Index Fund ETF 922908629 2,243 9,475 SH   SOLE 0 9,475 0 0
NextEra Energy, Inc. Stock 65339F101 663 8,439 SH   SOLE 0 8,438 0 0
Tesla Motors, Inc. Stock 88160R101 326 420 SH   SOLE 0 420 0 0
Msci Inc Com Stock 55354G100 313 515 SH   SOLE 0 515 0 0
Itau Unibanco Holding S.A. Sponsored ADR Pfd ADR 465562106 57 10,753 SH   SOLE 0 10,753 0 0
Thor Industries, Inc. Stock 885160101 258 2,099 SH   SOLE 0 2,099 0 0
Amphenol Corporation Class A Stock 032095101 476 6,494 SH   SOLE 0 6,494 0 0
Alcon Inc Stock H01301128 208 2,557 SH   SOLE 0 2,557 0 0
Oncternal Therapeutics Inc Com Stock 68236P107 126 30,211 SH   SOLE 0 30,211 0 0
Booz Allen Hamilton Holding Corporation Class A Stock 099502106 29,652 373,686 SH   SOLE 0 373,685 0 0
Teradyne, Inc. Stock 880770102 226 2,069 SH   SOLE 0 2,069 0 0
Zogenix Inc Com New Stock 98978L204 247 16,250 SH   SOLE 0 16,250 0 0
Anterix Inc Com Stock 03676C100 603 9,930 SH   SOLE 0 9,930 0 0
Booking Holdings Inc. Stock 09857L108 25,709 10,830 SH   SOLE 0 10,829 0 0
Wabtec Corporation Stock 929740108 26,040 302,051 SH   SOLE 0 302,050 0 0
Peloton Interactive Inc. Stock 70614W100 26,392 303,184 SH   SOLE 0 303,184 0 0
Leidos Holdings, Inc. Stock 525327102 32,683 339,988 SH   SOLE 0 339,987 0 0
Vanguard Russell 1000 Value Index Fund ETF 92206C714 1,502 21,858 SH   SOLE 0 21,858 0 0
Vanguard Total International Stock ETF ETF 921909768 706 11,159 SH   SOLE 0 11,159 0 0
Lear Corporation Stock 521865204 203 1,300 SH   SOLE 0 1,300 0 0
iShares Russell 2000 ETF ETF 464287655 1,113 5,090 SH   SOLE 0 5,090 0 0
Twilio Inc. Class A Stock 90138F102 18,042 56,548 SH   SOLE 0 56,547 0 0
Fidelity National Information Services, Inc. Stock 31620M106 479 3,936 SH   SOLE 0 3,936 0 0
Carrier Global Corporation Stock 14448C104 1,073 20,725 SH   SOLE 0 20,725 0 0
Sysco Corporation Stock 871829107 645 8,215 SH   SOLE 0 8,215 0 0
Warner Music Group Corp Stock 934550203 2,864 67,012 SH   SOLE 0 67,012 0 0
Ishares Floating Rate Bond Etf ETF 46429B655 5,099 100,300 SH   SOLE 0 100,300 0 0
II-VI Incorporated Stock 902104108 638 10,740 SH   SOLE 0 10,740 0 0
American Electric Power Company, Inc. Stock 025537101 325 4,001 SH   SOLE 0 4,000 0 0
Brown-Forman Corporation Class B Stock 115637209 3,227 48,153 SH   SOLE 0 48,153 0 0
Bentley Sys Inc Com Cl B Stock 08265T208 254 4,188 SH   SOLE 0 4,188 0 0
Eastern Bankshares Inc Com Stock 27627N105 914 45,000 SH   SOLE 0 45,000 0 0
TechTeam Global Inc. Stock G06242104 308 787 SH   SOLE 0 787 0 0
Xylem Inc. Stock 98419M100 383 3,100 SH   SOLE 0 3,100 0 0
Marriott Vacations Worldwide Corp. Stock 57164Y107 2,396 15,231 SH   SOLE 0 15,231 0 0
Cambridge Bancorp Com Stock 132152109 1,065 12,107 SH   SOLE 0 12,107 0 0
Neogen Corporation Stock 640491106 521 12,000 SH   SOLE 0 12,000 0 0
Visa Inc. Class A Stock 92826C839 55,143 247,557 SH   SOLE 0 247,556 0 0
Hershey Company Stock 427866108 2,162 12,775 SH   SOLE 0 12,775 0 0
iShares MSCI USA Minimum Volatility ETF ETF 46429B697 210 2,852 SH   SOLE 0 2,852 0 0
SVB Financial Group Stock 78486Q101 485 750 SH   SOLE 0 750 0 0
Vanguard Growth Index Fund ETF 922908736 2,842 9,795 SH   SOLE 0 9,794 0 0
American Tower Corporation REIT 03027X100 40,922 154,185 SH   SOLE 0 154,184 0 0
Zebra Technologies Corp Cl A Stock 989207105 373 723 SH   SOLE 0 723 0 0
Facebook, Inc. Class A Stock 30303M102 34,878 102,766 SH   SOLE 0 102,766 0 0
ASML Holding NV ADR ADR N07059210 253 340 SH   SOLE 0 340 0 0
Lpl Finl Hldgs Inc Com Stock 50212V100 926 5,905 SH   SOLE 0 5,905 0 0
Mondelez Intl Inc. Class A Stock 609207105 3,758 64,595 SH   SOLE 0 64,595 0 0
Broadcom Limited Stock 11135F101 4,101 8,457 SH   SOLE 0 8,456 0 0
UniFirst Corporation Stock 904708104 461 2,167 SH   SOLE 0 2,167 0 0
Martin Marietta Materials, Inc. Stock 573284106 248 725 SH   SOLE 0 725 0 0
iShares Core MSCI EAFE ETF ETF 46432F842 220 2,968 SH   SOLE 0 2,968 0 0
SL Green Realty Corp. REIT 78440X804 29,499 416,412 SH   SOLE 0 416,412 0 0
Accenture Plc Stock G1151C101 229 715 SH   SOLE 0 715 0 0
Equifax Inc. Stock 294429105 329 1,300 SH   SOLE 0 1,300 0 0
NICE Systems Ltd. Sponsored ADR ADR 653656108 2,045 7,200 SH   SOLE 0 7,200 0 0
NVIDIA Corporation Stock 67066G104 313 1,510 SH   SOLE 0 1,510 0 0
EOG Resources, Inc. Stock 26875P101 226 2,816 SH   SOLE 0 2,816 0 0
S&P Global Inc. Stock 78409V104 38,837 91,404 SH   SOLE 0 91,404 0 0
SPDR S&P Biotech ETF ETF 78464A870 229 1,820 SH   SOLE 0 1,820 0 0
iShares Core MSCI Emerging Markets ETF ETF 46434G103 422 6,825 SH   SOLE 0 6,825 0 0
Cabot Oil & Gas Corporation Stock 127097103 465 21,384 SH   SOLE 0 21,384 0 0
PTC Inc. Stock 69370C100 240 2,001 SH   SOLE 0 2,001 0 0
Taiwan Semiconductor Manufacturing Co., Ltd. Sponsored ADR ADR 874039100 499 4,468 SH   SOLE 0 4,468 0 0
Casella Waste Sys Inc Cl A Stock 147448104 290 3,815 SH   SOLE 0 3,815 0 0
Blackstone Group L.P. Stock 09260D107 57,439 493,715 SH   SOLE 0 493,715 0 0
ANSYS, Inc. Stock 03662Q105 538 1,580 SH   SOLE 0 1,580 0 0
Church & Dwight Co., Inc. Stock 171340102 4,079 49,405 SH   SOLE 0 49,405 0 0
Stryker Corporation Stock 863667101 508 1,925 SH   SOLE 0 1,925 0 0
General Dynamics Corporation Stock 369550108 314 1,600 SH   SOLE 0 1,600 0 0
Cullen/Frost Bankers, Inc. Stock 229899109 202 1,700 SH   SOLE 0 1,700 0 0
McDonald's Corporation Stock 580135101 448 1,858 SH   SOLE 0 1,858 0 0
AMETEK, Inc. Stock 031100100 414 3,340 SH   SOLE 0 3,340 0 0
Cisco Systems, Inc. Stock 17275R102 1,409 25,884 SH   SOLE 0 25,884 0 0
CDW Corp. Stock 12514G108 262 1,438 SH   SOLE 0 1,438 0 0
AT&T Inc. Stock 00206R102 386 14,303 SH   SOLE 0 14,303 0 0
Vanguard Intermediate Term Bond Index Fund ETF 921937819 2,778 31,057 SH   SOLE 0 31,057 0 0
RE/MAX Holdings, Inc. Stock 75524W108 19,373 621,722 SH   SOLE 0 621,721 0 0
Charter Communications, Inc. Class A Stock 16119P108 43,156 59,316 SH   SOLE 0 59,316 0 0
Gaming and Leisure Properties, Inc. REIT 36467J108 2,702 58,332 SH   SOLE 0 58,331 0 0
Ambev SA Sponsored ADR ADR 02319V103 38 13,745 SH   SOLE 0 13,745 0 0
iShares Core S&P 500 ETF ETF 464287200 7,868 18,263 SH   SOLE 0 18,262 0 0
Mettler-Toledo International Inc. Stock 592688105 1,599 1,161 SH   SOLE 0 1,161 0 0
Siteone Landscape Supply Inc Com Stock 82982L103 947 4,750 SH   SOLE 0 4,750 0 0
Union Pacific Corporation Stock 907818108 446 2,276 SH   SOLE 0 2,276 0 0
Ecolab Inc. Stock 278865100 247 1,185 SH   SOLE 0 1,185 0 0
Charles Riv Labs Intl Inc Com Stock 159864107 411 997 SH   SOLE 0 997 0 0
salesforce.com, inc. Stock 79466L302 38,288 141,171 SH   SOLE 0 141,171 0 0
IDEXX Laboratories, Inc. Stock 45168D104 1,279 2,057 SH   SOLE 0 2,057 0 0
Thermo Fisher Scientific Inc. Stock 883556102 40,478 70,849 SH   SOLE 0 70,849 0 0
Lockheed Martin Corporation Stock 539830109 2,522 7,308 SH   SOLE 0 7,308 0 0
JPMorgan Chase & Co. Stock 46625H100 5,087 31,076 SH   SOLE 0 31,076 0 0
Chevron Corporation Stock 166764100 1,009 9,946 SH   SOLE 0 9,946 0 0
Brunswick Corp Com Stock 117043109 407 4,275 SH   SOLE 0 4,275 0 0
Vanguard FTSE Developed Markets ETF ETF 921943858 2,666 52,809 SH   SOLE 0 52,809 0 0
Danaher Corporation Stock 235851102 3,830 12,581 SH   SOLE 0 12,581 0 0
TJX Companies, Inc. Stock 872540109 237 3,593 SH   SOLE 0 3,593 0 0
Wal-Mart Stores, Inc. Stock 931142103 997 7,154 SH   SOLE 0 7,154 0 0
Raytheon Technologies Corporation Stock 75513E101 1,787 20,783 SH   SOLE 0 20,783 0 0
Vanguard FTSE Emerging Markets ETF ETF 922042858 3,446 68,898 SH   SOLE 0 68,898 0 0
Texas Instruments Incorporated Stock 882508104 750 3,903 SH   SOLE 0 3,903 0 0
Target Corporation Stock 87612E106 588 2,569 SH   SOLE 0 2,569 0 0
Morgan Stanley Stock 617446448 2,398 24,641 SH   SOLE 0 24,640 0 0
3M Company Stock 88579Y101 435 2,482 SH   SOLE 0 2,482 0 0
Caterpillar Inc. Stock 149123101 1,858 9,680 SH   SOLE 0 9,679 0 0
Alphabet Inc. Class C Stock 02079K107 6,381 2,394 SH   SOLE 0 2,394 0 0
American Express Company Stock 025816109 33,829 201,928 SH   SOLE 0 201,927 0 0
Amgen Inc. Stock 031162100 216 1,018 SH   SOLE 0 1,018 0 0
Applied Materials, Inc. Stock 038222105 3,182 24,720 SH   SOLE 0 24,720 0 0
Otis Worldwide Corporation Stock 68902V107 2,335 28,383 SH   SOLE 0 28,382 0 0
Analog Devices, Inc. Stock 032654105 415 2,477 SH   SOLE 0 2,477 0 0
Williams Companies, Inc. Stock 969457100 1,617 62,318 SH   SOLE 0 62,318 0 0
IHS Markit Ltd. Stock G47567105 1,859 15,942 SH   SOLE 0 15,941 0 0
Mercadolibre Inc Com Stock 58733R102 222 132 SH   SOLE 0 132 0 0
Nexstar Media Group Inc Cl A Stock 65336K103 554 3,645 SH   SOLE 0 3,645 0 0
Vanguard Dividend Appreciation Index Fund ETF 921908844 828 5,388 SH   SOLE 0 5,388 0 0
Fidelity National Financial, Inc. Stock 31620R303 445 9,820 SH   SOLE 0 9,820 0 0
HealthEquity Inc Stock 42226A107 20,889 322,555 SH   SOLE 0 322,555 0 0
IPG Photonics Corporation Stock 44980X109 634 4,000 SH   SOLE 0 4,000 0 0
C.H. Robinson Worldwide, Inc. Stock 12541W209 278 3,200 SH   SOLE 0 3,200 0 0
Vanguard Short-Term Bond Index Fund ETF 921937827 653 7,965 SH   SOLE 0 7,965 0 0
Murphy USA, Inc. Stock 626755102 677 4,045 SH   SOLE 0 4,045 0 0
Mks Instrs Inc Com Stock 55306N104 260 1,725 SH   SOLE 0 1,725 0 0
Philip Morris International Inc. Stock 718172109 2,130 22,466 SH   SOLE 0 22,466 0 0
PNC Financial Services Group, Inc. Stock 693475105 2,926 14,958 SH   SOLE 0 14,958 0 0
Bristol-Myers Squibb Company Stock 110122108 2,160 36,506 SH   SOLE 0 36,506 0 0
W R Berkley Corporation Com Stock 084423102 205 2,797 SH   SOLE 0 2,797 0 0
Altria Group, Inc. Stock 02209S103 2,809 61,713 SH   SOLE 0 61,713 0 0
American Water Works Company, Inc. Stock 030420103 36,976 218,742 SH   SOLE 0 218,741 0 0
Agilent Technologies, Inc. Stock 00846U101 346 2,195 SH   SOLE 0 2,195 0 0
Exxon Mobil Corporation Stock 30231G102 1,372 23,318 SH   SOLE 0 23,317 0 0
UnitedHealth Group Incorporated Stock 91324P102 35,116 89,871 SH   SOLE 0 89,870 0 0
Travelers Companies, Inc. Stock 89417E109 2,148 14,130 SH   SOLE 0 14,130 0 0
Lowe's Companies, Inc. Stock 548661107 237 1,170 SH   SOLE 0 1,170 0 0
PayPal Holdings Inc. Stock 70450Y103 58,581 225,131 SH   SOLE 0 225,131 0 0
Charles Schwab Corporation Stock 808513105 33,237 456,295 SH   SOLE 0 456,294 0 0
BlackRock, Inc. Stock 09247X101 579 691 SH   SOLE 0 690 0 0
Apple Inc. Stock 037833100 58,348 412,351 SH   SOLE 0 412,351 0 0
Abbott Laboratories Stock 002824100 5,537 46,871 SH   SOLE 0 46,870 0 0
Walt Disney Company Stock 254687106 1,488 8,797 SH   SOLE 0 8,796 0 0
iShares Russell 1000 Value ETF ETF 464287598 4,043 25,831 SH   SOLE 0 25,831 0 0