3m Co COM 88579Y101 839 4722 SH SOLE NONE 0 0 4722 AES Corp COM 00130H105 260 10700 SH SOLE NONE 0 0 10700 Abbott Labs COM 002824100 2780 19756 SH SOLE NONE 0 0 19756 Abbott Labs COM 002824100 366 2600 SH OTR NONE 0 0 2600 Abbvie Inc COM 00287Y109 1874 13844 SH SOLE NONE 0 0 13844 Alphabet Cl A CAP STK CL A 02079K305 5609 1936 SH SOLE NONE 365 0 1571 Alphabet Cl A CAP STK CL A 02079K305 391 135 SH OTR NONE 0 0 135 Alphabet Cl C CAP STK CL C 02079K107 7254 2506 SH SOLE NONE 918 0 1588 Alphabet Cl C CAP STK CL C 02079K107 391 135 SH OTR NONE 0 0 135 Amazon.Com COM 023135106 7999 2399 SH SOLE NONE 708 0 1691 American Tower Corp COM 03027X100 6133 20966 SH SOLE NONE 6810 0 14156 American Tower Corp COM 03027X100 453 1550 SH OTR NONE 0 0 1550 American Water Works COM 030420103 5405 28618 SH SOLE NONE 8162 0 20456 Ametek Inc COM 031100100 4373 29739 SH SOLE NONE 12270 0 17469 Amgen Inc COM 031162100 679 3020 SH SOLE NONE 0 0 3020 Apple Computer Inc COM 037833100 19879 111950 SH SOLE NONE 14801 0 97148 Apple Computer Inc COM 037833100 1445 8140 SH OTR NONE 0 0 8140 Applied Materials Inc COM 038222105 573 3644 SH SOLE NONE 0 0 3644 Azek Co. Inc. CL A 05478C105 1164 25171 SH SOLE NONE 9515 0 15656 Bank Of Amer Corp COM 060505104 396 8893 SH SOLE NONE 0 0 8893 Berkshire Hathaway Class A CL A 084670108 451 1 SH SOLE NONE 0 0 1 Berkshire Hathaway Class B New CL B NEW 084670702 2476 8282 SH SOLE NONE 1175 0 7107 Blackrock Inc. COM 09247X101 7427 8111 SH SOLE NONE 2505 0 5606 Blackstone Group Inc Cl A COM 09260D107 628 4849 SH SOLE NONE 160 0 4689 Booking Hldgs Inc COM 09857L108 360 150 SH SOLE NONE 0 0 150 Bright Horizons Family COM 109194100 2385 18950 SH SOLE NONE 5150 0 13800 Bristol Myers Squibb Co COM 110122108 459 7355 SH SOLE NONE 0 0 7355 CME Group COM 12572Q105 5768 25246 SH SOLE NONE 7852 0 17394 Chevron Texaco Corp COM 166764100 552 4706 SH OTR NONE 0 0 4706 Cisco Systems Inc COM 17275R102 585 9228 SH SOLE NONE 2496 0 6732 Copart Inc. COM 217204106 3555 23445 SH SOLE NONE 6800 0 16645 Danaher Corp COM 235851102 10934 33233 SH SOLE NONE 10111 0 23122 Disney Walt Co Holding Co COM 254687106 386 2491 SH SOLE NONE 0 0 2491 Dover Corp COM 260003108 5895 32463 SH SOLE NONE 8796 0 23666 Ecolab Inc. COM 278865100 4738 20196 SH SOLE NONE 6608 0 13588 Emerson Electric Co COM 291011104 276 2970 SH SOLE NONE 0 0 2970 Equinix Inc COM 29444U700 4346 5138 SH SOLE NONE 1695 0 3443 Exxon Mobil Corp COM 30231G102 257 4196 SH SOLE NONE 0 0 4196 Exxon Mobil Corp COM 30231G102 527 8616 SH OTR NONE 0 0 8616 Fair Isaac Corp. COM 303250104 3367 7765 SH SOLE NONE 2200 0 5565 First Republic Bank San Franci COM 33616C100 2372 11488 SH SOLE NONE 355 0 11133 Fiserv Inc Wis COM 337738108 2594 24995 SH SOLE NONE 6517 0 18478 Freshpet Inc. COM 358039105 868 9106 SH SOLE NONE 3240 0 5866 Genuine Parts Co COM 372460105 540 3854 SH SOLE NONE 0 0 3854 Goldman Sachs Group Inc COM 38141G104 327 856 SH SOLE NONE 36 0 820 Heico Corp. COM 422806109 2929 20306 SH SOLE NONE 7065 0 13241 Home Depot Inc COM 437076102 3046 7340 SH SOLE NONE 0 0 7340 Home Depot Inc COM 437076102 365 880 SH OTR NONE 0 0 880 Honeywell Inc COM 438516106 216 1033 SH SOLE NONE 0 0 1033 Idexx Laboratories Inc COM 45168D104 5864 8906 SH SOLE NONE 3605 0 5301 Illumina Inc COM 452327109 3328 8747 SH SOLE NONE 3525 0 5222 Intel Corp COM 458140100 235 4557 SH SOLE NONE 0 0 4557 JP Morgan Chase COM 46625H100 11593 73208 SH SOLE NONE 10326 0 62882 JP Morgan Chase COM 46625H100 269 1700 SH OTR NONE 0 0 1700 Johnson & Johnson Com COM 478160104 3834 22411 SH SOLE NONE 7785 0 14626 Johnson & Johnson Com COM 478160104 330 1930 SH OTR NONE 0 0 1930 MSCI COM 55354G100 4626 7550 SH SOLE NONE 2115 0 5435 Markel COM 570535104 3479 2819 SH SOLE NONE 752 0 2067 Marketaxess Holdings COM 57060D108 1129 2745 SH SOLE NONE 285 0 2460 Massimo Corporation COM 574795100 3994 13641 SH SOLE NONE 4050 0 9591 Mastercard Inc. CL A 57636Q104 7627 21227 SH SOLE NONE 5575 0 15652 Medtronic Inc SHS G5960L103 595 5748 SH SOLE NONE 0 0 5748 Merck & Co Inc New Com COM 58933Y105 900 11744 SH SOLE NONE 0 0 11744 Meta Platforms CL A 30303M102 690 2050 SH SOLE NONE 0 0 2050 Microsoft Corp Com COM 594918104 7308 21728 SH SOLE NONE 3357 0 18370 Microsoft Corp Com COM 594918104 336 1000 SH OTR NONE 0 0 1000 Netflix, Inc COM 64110L106 4791 7952 SH SOLE NONE 3195 0 4757 Novartis Ag Spon Adr SPONSORED ADR 66987V109 489 5594 SH SOLE NONE 0 0 5594 Paycom Software Inc COM 70432V102 4053 9763 SH SOLE NONE 2520 0 7243 Paypal Holdings Inc COM 70450Y103 321 1700 SH SOLE NONE 0 0 1700 Pepsico Inc COM 713448108 309 1781 SH SOLE NONE 0 0 1781 Pfizer Inc Com COM 717081103 1013 17150 SH SOLE NONE 0 0 17150 Philip Morris International COM 718172109 276 2904 SH SOLE NONE 0 0 2904 Price T Rowe Group Inc. COM 74144T108 332 1690 SH SOLE NONE 0 0 1690 Procter & Gamble Co COM 742718109 2456 15015 SH SOLE NONE 390 0 14625 Procter & Gamble Co COM 742718109 311 1900 SH OTR NONE 0 0 1900 Roper Technologies COM 776696106 7188 14613 SH SOLE NONE 4794 0 9819 Royal Dutch Shell Class A SPONS ADR A 780259206 1271 29291 SH SOLE NONE 0 0 29291 SBA Communications Corp. CL A 78410G104 374 962 SH SOLE NONE 15 0 947 Steris Plc SHS USD G8473T100 2927 12027 SH SOLE NONE 3155 0 8872 Target Corp COM 87612E106 1343 5801 SH SOLE NONE 0 0 5801 Teladoc Health Inc. COM 87918A105 753 8200 SH SOLE NONE 1275 0 6925 Teledyne Inc COM 879360105 2483 5684 SH SOLE NONE 1425 0 4259 Teleflex Incorporated COM 879369106 2440 7427 SH SOLE NONE 2700 0 4727 Teradyne COM 880770102 2755 16846 SH SOLE NONE 8620 0 8226 Trade Web Markets, Inc. CL A 892672106 2514 25107 SH SOLE NONE 8725 0 16381 Twilio Inc. CL A 90138F102 247 939 SH SOLE NONE 220 0 719 Tyler Technologies Inc COM 902252105 5268 9793 SH SOLE NONE 2470 0 7323 V. F. Corporation COM 918204108 237 3233 SH SOLE NONE 0 0 3233 Veeva Systems, Inc. CL A COM 922475108 1887 7385 SH SOLE NONE 2365 0 5020 Verizon Communications COM 92343V104 687 13227 SH SOLE NONE 0 0 13227 Visa Inc. COM CL A 92826C839 3861 17817 SH SOLE NONE 4032 0 13785 Visa Inc. COM CL A 92826C839 433 2000 SH OTR NONE 0 0 2000 Wells Fargo & Co New COM 949746101 317 6600 SH OTR NONE 0 0 6600 West Pharmaceuticals Services COM 955306105 6979 14881 SH SOLE NONE 5130 0 9751 Zoetis Inc. CL A 98978V103 6207 25433 SH SOLE NONE 8065 0 17368