UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F COVER PAGE
OMB APPROVAL
OMB Number:3235-0006
Expires:July 31, 2015
Estimated average burden
hours per response:23.8
Report for the Calendar Year or Quarter Ended:
09-30-2025
Check here if Amendment: ☐ Amendment Number:
This Amendment (Check only one.):☐ is a restatement.
☐ adds new holdings entries.

Institutional Investment Manager Filing this Report:

Name:
East Coast Asset Management, LLC.
Address:
16 Martin Street
Po Box 566
ESSEX, MA 01929
Form 13F File Number:
028-15537

The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables, are considered integral parts of this form.


Person Signing this Report on Behalf of Reporting Manager:
Name:
Jane Bolger
Title:
Chief Compliance Officer
Phone:
978-801-0860


Signature, Place, and Date of Signing:

/s/ Jane Bolger
                         [Signature]
Essex, MASSACHUSETTS
                 [City, State]
11-14-2025
                           [Date]
                          

Report Type (Check only one.):

☒ 13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager are reported in this report.) 

☐ 13F NOTICE. (Check here if no holdings reported are in this report, and all holdings are reported by other reporting manager(s).) 

☐ 13F COMBINATION REPORT. (Check here if a portion of the holdings for this reporting manager are reported in this report and a portion are reported by other reporting manager(s).)


Form 13F Summary Page

Report Summary:

Number of Other Included Managers:
0
Form 13F Information table Entry Total:
68
Form 13F Information table Value Total:
319179094
          (thousands)

List of Other Included Managers:

Provide a numbered list of the name(s) and Form 13F file number(s) of all institutional investment managers with respect to which this report is filed, other than the manager filing this report.
[If there are no entries in this list, state "NONE" and omit the column headings and list entries.]

  
NONE


UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE
OMB APPROVAL
OMB Number:3235-0006
Expires:July 31, 2015
Estimated average burden
hours per response:23.8
COLUMN 1COLUMN 2COLUMN 3COLUMN 4COLUMN 5COLUMN 6COLUMN 7COLUMN 8
VALUESHRS ORSH/PUT/INVESTMENTOTHERVOTING AUTHORITY
NAME OF ISSUERTITLE OF CLASSCUSIP(x$1000)PRN AMTPRNCALLDISCRETIONMANAGERSOLESHAREDNONE
3M COCOM88579Y101401,0682,585SHSOLE2,585 0 0
ADOBE INCCOM00724F101371,4461,053SHSOLE1,053 0 0
ALPHABET INCCAP STK CL A02079K3051,309,0945,385SHSOLE5,385 0 0
ALPHABET INCCAP STK CL C02079K10748,763,181200,218SHSOLE200,218 0 0
AMAZON COM INCCOM02313510613,475,50961,372SHSOLE61,372 0 0
AMERICAN EXPRESS COCOM025816109478,9751,442SHSOLE1,442 0 0
AMERICAN TOWER CORP NEWCOM03027X100241,0391,253SHSOLE1,253 0 0
AMGEN INCCOM031162100459,4221,628SHSOLE1,628 0 0
APPLE INCCOM03783310010,018,95939,347SHSOLE39,347 0 0
AUTOMATIC DATA PROCESSING INCOM0530151031,933,8686,589SHSOLE6,589 0 0
BERKSHIRE HATHAWAY INC DELCL A0846701082,262,6003SHSOLE3 0 0
BERKSHIRE HATHAWAY INC DELCL B NEW08467070215,934,50131,695SHSOLE31,695 0 0
BOSTON SCIENTIFIC CORPCOM101137107322,5703,304SHSOLE3,304 0 0
BROADRIDGE FINL SOLUTIONS INCOM11133T103830,7773,488SHSOLE3,488 0 0
CHARTER COMMUNICATIONS INC NCL A16119P1082,652,8199,643SHSOLE9,643 0 0
COLGATE PALMOLIVE COCOM1941621031,651,05120,654SHSOLE20,654 0 0
COMCAST CORP NEWCL A20030N101583,56018,573SHSOLE18,573 0 0
COSTCO WHSL CORP NEWCOM22160K105224,002242SHSOLE242 0 0
CRANE COMPANYCOMMON STOCK2244081041,833,4829,957SHSOLE9,957 0 0
DANAHER CORPORATIONCOM235851102731,5843,690SHSOLE3,690 0 0
DEERE & COCOM2441991054,691,34310,260SHSOLE10,260 0 0
DISNEY WALT COCOM254687106279,1512,438SHSOLE2,438 0 0
EATON CORP PLCSHSG29183103230,912617SHSOLE617 0 0
ELEVANCE HEALTH INC FORMERLYCOM036752103235,878730SHSOLE730 0 0
FERRARI N VCOMN3167Y103361,489745SHSOLE745 0 0
FIDELITY WISE ORIGIN BITCOINSHS315948109234,0542,345SHSOLE2,345 0 0
HOME DEPOT INCCOM437076102421,4181,040SHSOLE1,040 0 0
INTERNATIONAL BUSINESS MACHSCOM459200101505,2921,791SHSOLE1,791 0 0
INTUITCOM461202103409,746600SHSOLE600 0 0
INVESCO EXCH TRADED FD TR IIS&P500 LOW VOL46138E354528,4157,191SHSOLE7,191 0 0
ISHARES INCMSCI SWITZERLAND464286749392,2787,101SHSOLE7,101 0 0
ISHARES TRGLOB HLTHCRE ETF464287325371,6134,193SHSOLE4,193 0 0
ISHARES TRRUS 1000 GRW ETF464287614240,763514SHSOLE514 0 0
ISHARES TRRUSSELL 2000 ETF464287655594,8842,459SHSOLE2,459 0 0
ISHARES TRS&P 100 ETF464287101913,9792,746SHSOLE2,746 0 0
JOHNSON & JOHNSONCOM4781601041,036,2205,589SHSOLE5,589 0 0
JPMORGAN CHASE & CO.COM46625H100265,907843SHSOLE843 0 0
LABCORP HOLDINGS INCCOM SHS5049221051,237,7194,312SHSOLE4,312 0 0
LIBERTY BROADBAND CORPCOM SER C530307305309,2494,867SHSOLE4,867 0 0
LOCKHEED MARTIN CORPCOM539830109490,224982SHSOLE982 0 0
LOUISIANA PAC CORPCOM5463471052,917,87832,844SHSOLE32,844 0 0
MARKEL GROUP INCCOM5705351044,032,9702,110SHSOLE2,110 0 0
MASTERCARD INCORPORATEDCL A57636Q10413,254,82423,303SHSOLE23,303 0 0
META PLATFORMS INCCL A30303M10230,746,14741,867SHSOLE41,867 0 0
MICROSOFT CORPCOM5949181043,900,5687,531SHSOLE7,531 0 0
MOODYS CORPCOM6153691056,846,54514,369SHSOLE14,369 0 0
PAYCHEX INCCOM7043261071,104,3338,712SHSOLE8,712 0 0
PERIMETER SOLUTIONS INCCOMMON STOCK71385M10735,241,2551,573,973SHSOLE1,573,973 0 0
PFIZER INCCOM717081103207,4338,141SHSOLE8,141 0 0
PROCTER AND GAMBLE COCOM742718109477,4973,108SHSOLE3,108 0 0
REPUBLIC SVCS INCCOM760759100358,6771,563SHSOLE1,563 0 0
RTX CORPORATIONCOM75513E101548,5363,278SHSOLE3,278 0 0
SCHWAB CHARLES CORPCOM8085131054,285,87144,892SHSOLE44,892 0 0
SHERWIN WILLIAMS COCOM8243481063,661,57910,575SHSOLE10,575 0 0
SPDR S&P 500 ETF TRTR UNIT78462F1033,468,1335,206SHSOLE5,206 0 0
SYSCO CORPCOM8718291071,281,71015,566SHSOLE15,566 0 0
TESLA INCCOM88160R10130,428,63268,422SHSOLE68,422 0 0
TJX COS INC NEWCOM8725401096,755,53846,738SHSOLE46,738 0 0
TRANSDIGM GROUP INCCOM89364110030,825,14123,387SHSOLE23,387 0 0
UNION PAC CORPCOM9078181081,997,9798,453SHSOLE8,453 0 0
VANGUARD INDEX FDSGROWTH ETF922908736284,409593SHSOLE593 0 0
VANGUARD INDEX FDSMCAP VL IDXVIP9229085121,457,5678,349SHSOLE8,349 0 0
VANGUARD INDEX FDSS&P 500 ETF SHS922908363306,190500SHSOLE500 0 0
VANGUARD INTL EQUITY INDEX FFTSE EMR MKT ETF922042858234,9794,337SHSOLE4,337 0 0
VISA INCCOM CL A92826C8395,629,38516,490SHSOLE16,490 0 0
WALMART INCCOM931142103281,4302,731SHSOLE2,731 0 0
WASTE MGMT INC DELCOM94106L1093,013,47113,646SHSOLE13,646 0 0
WOODWARD INCCOM9807451037,400,37629,284SHSOLE29,284 0 0