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
ABBOTT LABORATORIES COM 002824100 9,639 88,719 SH   SOLE 0 88,719 0 0
ABBVIE INC COM 00287Y109 5,970 38,982 SH   SOLE 0 38,982 0 0
ACCENTURE PLC SHS CLASS A G1151C101 7,295 26,275 SH   SOLE 0 26,275 0 0
ADOBE INC COM 00724F101 4,982 13,609 SH   SOLE 0 13,609 0 0
AIR PRODUCTS & CHEMICALS INC COM 009158106 4,727 19,656 SH   SOLE 0 19,656 0 0
ALCON INC ORD SHS H01301128 3,642 52,107 SH   SOLE 0 52,107 0 0
ALEXANDRIA REAL ESTATE EQUITIES COM 015271109 2,190 15,097 SH   SOLE 0 15,097 0 0
ALPHABET INC CL A CL A 02079K305 32,373 14,855 SH   SOLE 0 14,855 0 0
ALPHABET INC CL C CL C 02079K107 4,244 1,940 SH   SOLE 0 1,940 0 0
ALTRIA GROUP INC COM 02209S103 2,044 48,927 SH   SOLE 0 48,927 0 0
AMAZON.COM INC COM 023135106 23,309 219,460 SH   SOLE 0 219,460 0 0
AMERICAN EXPRESS CO COM 025816109 7,848 56,618 SH   SOLE 0 56,618 0 0
AMERICAN TOWER CORP COM 03027X100 5,943 23,254 SH   SOLE 0 23,254 0 0
AMPHENOL CORP CL A 032095101 5,584 86,732 SH   SOLE 0 86,732 0 0
APPLE INC COM 037833100 41,733 305,242 SH   SOLE 0 305,242 0 0
APTIV PLC SHS G6095L109 2,908 32,654 SH   SOLE 0 32,654 0 0
BANK OF AMERICA CORP COM 060505104 3,906 125,461 SH   SOLE 0 125,461 0 0
BERKSHIRE HATHAWAY INC - CL B CL B NEW 084670702 12,819 46,951 SH   SOLE 0 46,951 0 0
BJ S WHOLESALE CLUB HOLDINGS COM 05550J101 8,622 138,351 SH   SOLE 0 138,351 0 0
BLACKROCK INC COM 09247X101 4,777 7,844 SH   SOLE 0 7,844 0 0
BOSTON BEER COMPANY INC CL A 100557107 639 2,110 SH   SOLE 0 2,110 0 0
BRISTOL-MYERS SQUIBB COMPANY COM 110122108 2,119 27,514 SH   SOLE 0 27,514 0 0
BROADCOM INC COM 11135F101 4,411 9,080 SH   SOLE 0 9,080 0 0
BROADRIDGE FINANCIAL SOLUTIO COM 11133T103 6,396 44,868 SH   SOLE 0 44,868 0 0
CAMBRIDGE BANCORP COM 132152109 7,367 89,087 SH   SOLE 0 89,087 0 0
CHARLES RIVER LABORATORIES COM 159864107 6,247 29,197 SH   SOLE 0 29,197 0 0
CHARTER COMMUNICATIONS INC CL A 16119P108 9,892 21,112 SH   SOLE 0 21,112 0 0
CHEVRON CORPORATION COM 166764100 7,913 54,655 SH   SOLE 0 54,655 0 0
CMS ENERGY CORP COM 125896100 2,321 34,388 SH   SOLE 0 34,388 0 0
COCA-COLA CO COM 191216100 2,509 39,885 SH   SOLE 0 39,885 0 0
CONOCOPHILLIPS COM 20825C104 4,049 45,084 SH   SOLE 0 45,084 0 0
COSTCO WHOLESALE CORP COM 22160K105 6,588 13,745 SH   SOLE 0 13,745 0 0
DANAHER CORP COM 235851102 8,404 33,149 SH   SOLE 0 33,149 0 0
DISCOVER FINANCIAL SERVICES COM 254709108 5,966 63,078 SH   SOLE 0 63,078 0 0
DISNEY WALT CO COM 254687106 5,529 58,573 SH   SOLE 0 58,573 0 0
DOLLAR GENERAL CORP COM 256677105 4,949 20,164 SH   SOLE 0 20,164 0 0
DOMINO S PIZZA INC COM 25754A201 4,157 10,667 SH   SOLE 0 10,667 0 0
EDWARDS LIFESCIENCES CORP COM 28176E108 3,105 32,649 SH   SOLE 0 32,649 0 0
ELI LILLY & CO COM 532457108 6,453 19,903 SH   SOLE 0 19,903 0 0
ENERGY SELECT SECTOR SPDR FUND ENERGY 81369Y506 1,783 24,929 SH   SOLE 0 24,929 0 0
EQUINIX INC COM 29444U700 3,640 5,540 SH   SOLE 0 5,540 0 0
ESTEE LAUDER COMPANIES CL A CL A 518439104 5,098 20,017 SH   SOLE 0 20,017 0 0
EVERGY INC COM 30034W106 2,966 45,451 SH   SOLE 0 45,451 0 0
EVOLUTION PETROLEUM CORP COM 30049A107 3,415 625,368 SH   SOLE 0 625,368 0 0
EXXON MOBIL CORPORATION COM 30231G102 9,748 113,821 SH   SOLE 0 113,821 0 0
FACEBOOK INC CL A 30303M102 8,258 51,214 SH   SOLE 0 51,214 0 0
FINANCIAL SELECT SECTOR SPDR FINANCIAL 81369Y605 2,070 65,820 SH   SOLE 0 65,820 0 0
GRACO INC COM 384109104 2,459 41,384 SH   SOLE 0 41,384 0 0
HILTON WORLDWIDE HOLDINGS COM 43300A203 2,301 20,650 SH   SOLE 0 20,650 0 0
HOME DEPOT INC COM 437076102 9,966 36,336 SH   SOLE 0 36,336 0 0
HONEYWELL INTERNATIONAL INC COM 438516106 2,838 16,331 SH   SOLE 0 16,331 0 0
ICON PLC SHS G4705A100 4,861 22,432 SH   SOLE 0 22,432 0 0
IDEX CORP COM 45167R104 3,926 21,616 SH   SOLE 0 21,616 0 0
INDUSTRIAL SELECT SECTOR SPDR SBI INT-INDS 81369Y704 17,852 204,401 SH   SOLE 0 204,401 0 0
INTUIT INC COM 461202103 3,825 9,925 SH   SOLE 0 9,925 0 0
INTUITIVE SURGICAL INC COM NEW 46120E602 1,941 9,671 SH   SOLE 0 9,671 0 0
INVITATION HOMES INC COM 46187W107 1,851 52,035 SH   SOLE 0 52,035 0 0
ISHARES CORE MSCI TOTAL INTL ETF CORE MSCI TOTAL 46432F834 71,493 1,253,605 SH   SOLE 0 1,253,605 0 0
JOHNSON & JOHNSON COM 478160104 11,103 62,551 SH   SOLE 0 62,551 0 0
JP MORGAN CHASE & CO COM 46625H100 13,503 119,913 SH   SOLE 0 119,913 0 0
LAM RESEARCH CORPORATION COM 512807108 9,986 23,432 SH   SOLE 0 23,432 0 0
MARKETAXESS HOLDINGS INC COM 57060D108 2,015 7,870 SH   SOLE 0 7,870 0 0
MARTIN MARIETTA MATERIALS COM 573284106 6,124 20,466 SH   SOLE 0 20,466 0 0
MASTERCARD INC CLASS A CL A 57636Q104 12,433 39,409 SH   SOLE 0 39,409 0 0
MATCH GROUP INC COM 57667L107 7,512 107,789 SH   SOLE 0 107,789 0 0
MATERIALS SELECT SECTOR SPDR SBI MATERIALS 81369Y100 1,952 26,525 SH   SOLE 0 26,525 0 0
MCDONALDS CORPORATION COM 580135101 1,811 7,337 SH   SOLE 0 7,337 0 0
MERCK & CO INC COM 58933Y105 6,559 71,946 SH   SOLE 0 71,946 0 0
MICROSOFT CORP COM 594918104 46,512 181,100 SH   SOLE 0 181,100 0 0
MONSTER BEVERAGE CORP COM 61174X109 1,553 16,750 SH   SOLE 0 16,750 0 0
MORGAN STANLEY COM NEW 617446448 8,757 115,134 SH   SOLE 0 115,134 0 0
NEXTERA ENERGY INC COM 65339F101 7,244 93,523 SH   SOLE 0 93,523 0 0
NIKE INC CL B 654106103 8,895 87,037 SH   SOLE 0 87,037 0 0
NISOURCE INC COM 65473P105 1,804 61,174 SH   SOLE 0 61,174 0 0
NVIDIA CORP COM 67066G104 9,969 65,762 SH   SOLE 0 65,762 0 0
O'REILLY AUTOMOTIVE INC COM 67103H107 3,730 5,904 SH   SOLE 0 5,904 0 0
OTIS WORLDWIDE CORP COM 68902V107 4,421 62,556 SH   SOLE 0 62,556 0 0
PAYPAL HOLDINGS INC COM 70450Y103 1,928 27,608 SH   SOLE 0 27,608 0 0
PHILIP MORRIS INTERNATIONAL INC COM 718172109 10,782 109,196 SH   SOLE 0 109,196 0 0
PROCTER & GAMBLE CO COM 742718109 10,597 73,700 SH   SOLE 0 73,700 0 0
PROLOGIS INC COM 74340W103 2,645 22,482 SH   SOLE 0 22,482 0 0
RAYTHEON TECHNOLOGIES CORP COM 75513E101 6,843 71,200 SH   SOLE 0 71,200 0 0
REAL ESTATE SELECT SECTOR SPDR RL EST SEL SEC 81369Y860 1,279 31,292 SH   SOLE 0 31,292 0 0
REGENERON PHARMACEUTICALS COM 75886F107 2,670 4,516 SH   SOLE 0 4,516 0 0
ROCKWELL AUTOMATION INC COM 773903109 2,932 14,710 SH   SOLE 0 14,710 0 0
ROPER TECHNOLOGIES INC COM 776696106 4,593 11,637 SH   SOLE 0 11,637 0 0
S&P GLOBAL INC COM 78409V104 6,305 18,705 SH   SOLE 0 18,705 0 0
SALESFORCE.COM INC COM 79466L302 10,639 64,463 SH   SOLE 0 64,463 0 0
SCHWAB (CHARLES) CORP COM 808513105 4,740 75,019 SH   SOLE 0 75,019 0 0
SEMPRA ENERGY COM 816851109 4,748 31,598 SH   SOLE 0 31,598 0 0
SHELL PLC SPON ADS 780259305 2,608 49,872 SH   SOLE 0 49,872 0 0
SHERWIN WILLIAMS COMPANY COM 824348106 4,336 19,364 SH   SOLE 0 19,364 0 0
STERIS PLC SHS USD G8473T100 6,233 30,236 SH   SOLE 0 30,236 0 0
SUN COMMUNITIES INC COM 866674104 3,660 22,964 SH   SOLE 0 22,964 0 0
TESLA INC COM 88160R101 10,373 15,403 SH   SOLE 0 15,403 0 0
TEXAS INSTRUMENTS INC COM 882508104 6,921 45,045 SH   SOLE 0 45,045 0 0
THERMO FISHER SCIENTIFIC INC COM 883556102 9,963 18,338 SH   SOLE 0 18,338 0 0
TJX COMPANIES INC COM 872540109 5,427 97,167 SH   SOLE 0 97,167 0 0
UNION PACIFIC CORP COM 907818108 3,338 15,650 SH   SOLE 0 15,650 0 0
UNITED PARCEL SERVICE INC CL B 911312106 7,536 41,285 SH   SOLE 0 41,285 0 0
UNITEDHEALTH GROUP INC COM 91324P102 14,981 29,166 SH   SOLE 0 29,166 0 0
VAIL RESORTS INC COM 91879Q109 3,692 16,933 SH   SOLE 0 16,933 0 0
VISA INC CLASS A SHARES COM CL A 92826C839 12,673 64,365 SH   SOLE 0 64,365 0 0
VULCAN MATERIALS CO COM 929160109 3,019 21,249 SH   SOLE 0 21,249 0 0
WASTE MANAGEMENT INC COM 94106L109 3,130 20,461 SH   SOLE 0 20,461 0 0