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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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 FIGI (to the nearest dollar) PRN AMT PRN CALL DISCRETION MANAGER SOLE SHARED NONE
ABBOTT LABS COM 002824100   202,014 1,853 SH   SOLE 0 1,786 0 67
ADOBE SYSTEMS INCORPORATED COM 00724F101   207,332 424 SH   SOLE 0 400 0 24
ALEXANDRIA REAL ESTATE EQ IN COM 015271109   10,362,772 91,310 SH   SOLE 0 90,900 0 410
ALPHABET INC CAP STK CL C 02079K107   391,580 3,237 SH   SOLE 0 3,015 0 222
ALPHABET INC CAP STK CL A 02079K305   17,440,410 145,701 SH   SOLE 0 144,824 0 877
AMAZON COM INC COM 023135106   643,467 4,936 SH   SOLE 0 4,690 0 246
AMGEN INC COM 031162100   293,253 1,321 SH   SOLE 0 1,282 0 39
APPLE INC COM 037833100   30,277,516 156,094 SH   SOLE 0 154,671 0 1,423
BANK AMERICA CORP COM 060505104   20,688,712 721,112 SH   SOLE 0 717,673 0 3,439
BANK NEW YORK MELLON CORP COM 064058100   238,048 5,347 SH   SOLE 0 5,292 0 55
BERKLEY W R CORP COM 084423102   9,772,307 164,075 SH   SOLE 0 163,326 0 749
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702   32,390,567 94,987 SH   SOLE 0 94,531 0 456
BOEING CO COM 097023105   2,088,161 9,889 SH   SOLE 0 9,739 0 150
BRISTOL-MYERS SQUIBB CO COM 110122108   273,802 4,281 SH   SOLE 0 4,139 0 142
BURKE HERBERT FINL SVCS CORP COM 12135Y108   16,376,136 255,080 SH   SOLE 0 255,080 0 0
CABLE ONE INC COM 12685J105   9,806,919 14,925 SH   SOLE 0 14,853 0 72
CALIFORNIA WTR SVC GROUP COM 130788102   341,171 6,608 SH   SOLE 0 6,600 0 8
CAPITAL ONE FINL CORP COM 14040H105   13,774,167 125,941 SH   SOLE 0 125,255 0 686
CARMAX INC COM 143130102   13,459,713 160,809 SH   SOLE 0 160,092 0 717
CATERPILLAR INC COM 149123101   295,998 1,203 SH   SOLE 0 1,168 0 35
CHARTER COMMUNICATIONS INC N CL A 16119P108   6,521,185 17,751 SH   SOLE 0 17,663 0 88
CHEVRON CORP NEW COM 166764100   62,940 400 SH   OTR 0 400 0 0
CHEVRON CORP NEW COM 166764100   2,971,712 18,886 SH   SOLE 0 18,886 0 0
COCA COLA CO COM 191216100   658,062 10,928 SH   SOLE 0 10,818 0 110
CORNING INC COM 219350105   363,610 10,377 SH   SOLE 0 10,300 0 77
COSTCO WHSL CORP NEW COM 22160K105   355,869 661 SH   SOLE 0 645 0 16
CVS HEALTH CORP COM 126650100   11,081,952 160,306 SH   SOLE 0 159,388 0 918
DIMENSIONAL ETF TRUST US CORE EQT MKT 25434V104   4,611,002 148,790 SH   SOLE 0 142,706 0 6,084
DIMENSIONAL ETF TRUST INTL CORE EQT MK 25434V203   3,318,096 121,453 SH   SOLE 0 121,453 0 0
DIMENSIONAL ETF TRUST EMGR CRE EQT MNG 25434V302   1,150,338 49,034 SH   SOLE 0 49,034 0 0
DIMENSIONAL ETF TRUST US CORE EQUITY 2 25434V708   6,108,288 224,983 SH   SOLE 0 224,983 0 0
DIMENSIONAL ETF TRUST US TARGETED VLU 25434V609   366,342 7,897 SH   SOLE 0 7,897 0 0
DIMENSIONAL ETF TRUST WORLD EX US CORE 25434V880   1,985,150 85,163 SH   SOLE 0 85,163 0 0
DIMENSIONAL ETF TRUST US HIGH PROFITAB 25434V831   3,359,221 126,572 SH   SOLE 0 126,572 0 0
DIMENSIONAL ETF TRUST US REAL ESTATE E 25434V823   1,168,170 54,283 SH   SOLE 0 54,283 0 0
DIMENSIONAL ETF TRUST INTL HIGH PROFIT 25434V765   1,344,980 54,942 SH   SOLE 0 54,942 0 0
DIMENSIONAL ETF TRUST INTERNATIONAL 25434V690   1,030,519 33,843 SH   SOLE 0 33,843 0 0
DIMENSIONAL ETF TRUST US SUSTAINABILTY 25434V716   222,492 7,751 SH   SOLE 0 7,751 0 0
DISNEY WALT CO COM 254687106   451,230 5,054 SH   SOLE 0 5,000 0 54
EXXON MOBIL CORP COM 30231G102   14,219,793 132,585 SH   SOLE 0 131,691 0 894
HOME DEPOT INC COM 437076102   369,753 1,190 SH   SOLE 0 1,151 0 39
INTERNATIONAL BUSINESS MACHS COM 459200101   13,381 100 SH   OTR 0 100 0 0
INTERNATIONAL BUSINESS MACHS COM 459200101   458,304 3,425 SH   SOLE 0 3,372 0 53
ISHARES TR FLTG RATE NT ETF 46429B655   462,919 9,109 SH   SOLE 0 9,109 0 0
J P MORGAN EXCHANGE TRADED F ULTRA SHT MUNCPL 46641Q654   412,747 8,149 SH   SOLE 0 8,149 0 0
JACOBS SOLUTIONS INC COM 46982L108   17,900,870 150,567 SH   SOLE 0 149,892 0 675
JOHNSON & JOHNSON COM 478160104   1,737,620 10,498 SH   SOLE 0 10,380 0 118
JPMORGAN CHASE & CO COM 46625H100   318,319 2,189 SH   SOLE 0 2,114 0 75
KELLOGG CO COM 487836108   455,017 6,751 SH   SOLE 0 6,700 0 51
LIBERTY BROADBAND CORP COM SER C 530307305   3,537,177 44,154 SH   SOLE 0 43,862 0 292
LILLY ELI & CO COM 532457108   46,898 100 SH   OTR 0 100 0 0
LILLY ELI & CO COM 532457108   221,828 473 SH   SOLE 0 424 0 49
MARKEL GROUP INC COM 570535104   12,108,358 8,754 SH   SOLE 0 8,716 0 38
MARSH & MCLENNAN COS INC COM 571748102   703,795 3,742 SH   SOLE 0 3,722 0 20
MCDONALDS CORP COM 580135101   348,550 1,168 SH   SOLE 0 1,155 0 13
MERCK & CO INC COM 58933Y105   324,361 2,811 SH   SOLE 0 2,662 0 149
MICROSOFT CORP COM 594918104   102,162 300 SH   OTR 0 300 0 0
MICROSOFT CORP COM 594918104   24,814,075 72,867 SH   SOLE 0 72,210 0 657
NOVO-NORDISK A S ADR 670100205   14,279,070 88,235 SH   SOLE 0 87,851 0 384
OCCIDENTAL PETE CORP COM 674599105   12,625,066 214,712 SH   SOLE 0 213,689 0 1,023
PEPSICO INC COM 713448108   697,327 3,765 SH   SOLE 0 3,695 0 70
PERFORMANCE FOOD GROUP CO COM 71377A103   1,081,248 17,949 SH   SOLE 0 17,949 0 0
PFIZER INC COM 717081103   1,377,709 37,560 SH   SOLE 0 37,261 0 299
PROCTER AND GAMBLE CO COM 742718109   60,696 400 SH   OTR 0 400 0 0
PROCTER AND GAMBLE CO COM 742718109   1,623,315 10,698 SH   SOLE 0 10,667 0 31
PROGRESSIVE CORP COM 743315103   18,954,604 143,194 SH   SOLE 0 142,541 0 653
ROBERT HALF INTL INC COM 770323103   22,566 300 SH   OTR 0 300 0 0
ROBERT HALF INTL INC COM 770323103   14,047,805 186,756 SH   SOLE 0 185,795 0 961
ROCKWELL AUTOMATION INC COM 773903109   65,890 200 SH   OTR 0 200 0 0
ROCKWELL AUTOMATION INC COM 773903109   447,064 1,357 SH   SOLE 0 1,347 0 10
SCHWAB STRATEGIC TR SHT TM US TRES 808524862   4,062,041 84,520 SH   SOLE 0 84,121 0 399
SCHWAB STRATEGIC TR INT-TRM U.S TRES 808524854   1,179,369 23,932 SH   SOLE 0 23,932 0 0
SCHWAB STRATEGIC TR US TIPS ETF 808524870   6,414,758 122,349 SH   SOLE 0 120,888 0 1,461
SELECT SECTOR SPDR TR TECHNOLOGY 81369Y803   269,831 1,552 SH   SOLE 0 1,552 0 0
SPDR DOW JONES INDL AVERAGE UT SER 1 78467X109   343,850 1,000 SH   SOLE 0 1,000 0 0
SPDR S&P 500 ETF TR TR UNIT 78462F103   1,506,709 3,399 SH   SOLE 0 3,399 0 0
UNION PAC CORP COM 907818108   1,159,786 5,668 SH   SOLE 0 5,624 0 44
VALERO ENERGY CORP COM 91913Y100   6,865,700 58,531 SH   SOLE 0 58,247 0 284
VEEVA SYS INC CL A COM 922475108   615,731 3,114 SH   SOLE 0 3,111 0 3
VERISIGN INC COM 92343E102   18,371,135 81,299 SH   SOLE 0 80,929 0 370
VISA INC COM CL A 92826C839   748,486 3,152 SH   SOLE 0 3,087 0 65
WATERS CORP COM 941848103   9,509,081 35,676 SH   SOLE 0 35,512 0 164
WELLS FARGO CO NEW COM 949746101   4,595,484 107,673 SH   SOLE 0 107,566 0 107
YUM BRANDS INC COM 988498101   272,389 1,966 SH   SOLE 0 1,950 0 16