# EDGAR Filing Document

**Accession Number:** 0001579254
**File Stem:** 0001085146-25-005068
**Filing Date:** 2025-8
**Character Count:** 11183
**Document Hash:** c81c3d4234562a64f99068213c567353
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001085146-25-005068.hdr.sgml**: 20250814

**ACCESSION NUMBER**: 0001085146-25-005068

**CONFORMED SUBMISSION TYPE**: 13F-HR

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20250630

**FILED AS OF DATE**: 20250814

**DATE AS OF CHANGE**: 20250814

**EFFECTIVENESS DATE**: 20250814

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** East Coast Asset Management, LLC.
- **CENTRAL INDEX KEY:** 0001579254

**ORGANIZATION NAME:**
- **EIN:** 453363191
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 13F-HR
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 028-15537
- **FILM NUMBER:** 251214793

**BUSINESS ADDRESS:**
- **STREET 1:** 16 MARTIN STREET
- **STREET 2:** PO BOX 566
- **CITY:** ESSEX
- **STATE:** MA
- **ZIP:** 01929
- **BUSINESS PHONE:** 978-801-0860

**MAIL ADDRESS:**
- **STREET 1:** 16 MARTIN STREET
- **STREET 2:** PO BOX 566
- **CITY:** ESSEX
- **STATE:** MA
- **ZIP:** 01929

### FORM 13F COVER PAGE

**Report for the Calendar Year or Quarter Ended:** 06-30-2025

**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.<br>**Address:** 16 Martin Street<br>Po Box 566<br>ESSEX, MA 01929

**Form 13F File Number:** 028-15537

**CRD Number (if applicable):** 000147910

**SEC File Number (if applicable):** 801-69456

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<br>**Title:** Chief Compliance Officer<br>**Phone:** 978-801-0860

**Signature, Place, and Date of Signing:**

/s/  Jane Bolger  Essex, MA  08-14-2025<br>[Signature]  [City, State]  [Date]

**Report Type (Check only one.):**

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

[ ] **13F NOTICE.** (Check here if no holdings are reported 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:** 69

**Form 13F Information Table Value Total:** $301408563

      (round to nearest dollar)

**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**

### FORM 13F INFORMATION TABLE

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| NAME OF ISSUER | TITLE OF CLASS | CUSIP | FIGI | VALUE (x$1000) | SHRS OR PRN AMT | SH/PRN | PUT/CALL | INVESTMENT DISCRETION | OTHER MANAGER | VOTING AUTHORITY | VOTING AUTHORITY | VOTING AUTHORITY |
| NAME OF ISSUER | TITLE OF CLASS | CUSIP | FIGI | VALUE (x$1000) | SHRS OR PRN AMT | SH/PRN | PUT/CALL | INVESTMENT DISCRETION | OTHER MANAGER | SOLE | SHARED | NONE |
| 3M CO | COM | 88579Y101 | BBG001S5T7X2 | 393469 | 2585 | SH |  | SOLE |  | 2585 | 0 | 0 |
| ACCENTURE PLC IRELAND | SHS CLASS A | G1151C101 | BBG001SCXK90 | 220282 | 737 | SH |  | SOLE |  | 737 | 0 | 0 |
| ADOBE INC | COM | 00724F101 | BBG001S5NCQ5 | 407385 | 1053 | SH |  | SOLE |  | 1053 | 0 | 0 |
| ALPHABET INC | CAP STK CL A | 02079K305 | BBG009S39JY5 | 960454 | 5450 | SH |  | SOLE |  | 5450 | 0 | 0 |
| ALPHABET INC | CAP STK CL C | 02079K107 | BBG009S3NB21 | 37841209 | 213322 | SH |  | SOLE |  | 213322 | 0 | 0 |
| AMAZON COM INC | COM | 023135106 | BBG001S5PQL7 | 13798593 | 62895 | SH |  | SOLE |  | 62895 | 0 | 0 |
| AMERICAN EXPRESS CO | COM | 025816109 | BBG001S5P034 | 459969 | 1442 | SH |  | SOLE |  | 1442 | 0 | 0 |
| AMERICAN TOWER CORP NEW | COM | 03027X100 | BBG001S5NPQ6 | 277009 | 1253 | SH |  | SOLE |  | 1253 | 0 | 0 |
| AMGEN INC | COM | 031162100 | BBG001S5NNL6 | 454554 | 1628 | SH |  | SOLE |  | 1628 | 0 | 0 |
| APPLE INC | COM | 037833100 | BBG001S5N8V8 | 8172452 | 39833 | SH |  | SOLE |  | 39833 | 0 | 0 |
| AUTOMATIC DATA PROCESSING IN | COM | 053015103 | BBG001S82KF6 | 2045694 | 6633 | SH |  | SOLE |  | 6633 | 0 | 0 |
| BERKSHIRE HATHAWAY INC DEL | CL A | 084670108 | BBG001S902J2 | 2186400 | 3 | SH |  | SOLE |  | 3 | 0 | 0 |
| BERKSHIRE HATHAWAY INC DEL | CL B NEW | 084670702 | BBG001S90346 | 15839654 | 32607 | SH |  | SOLE |  | 32607 | 0 | 0 |
| BOSTON SCIENTIFIC CORP | COM | 101137107 | BBG001S63L94 | 354883 | 3304 | SH |  | SOLE |  | 3304 | 0 | 0 |
| BROADRIDGE FINL SOLUTIONS IN | COM | 11133T103 | BBG001SR7MB9 | 847730 | 3488 | SH |  | SOLE |  | 3488 | 0 | 0 |
| BROOKFIELD CORP | CL A LTD VT SH | 11271J107 | BBG001SF86D7 | 5278058 | 85336 | SH |  | SOLE |  | 85336 | 0 | 0 |
| CARRIER GLOBAL CORPORATION | COM | 14448C104 | BBG00RP5HZM1 | 215153 | 2940 | SH |  | SOLE |  | 2940 | 0 | 0 |
| CHARTER COMMUNICATIONS INC N | CL A | 16119P108 | BBG001T3TDG2 | 4177602 | 10219 | SH |  | SOLE |  | 10219 | 0 | 0 |
| COLGATE PALMOLIVE CO | COM | 194162103 | BBG001S5PVM5 | 1873997 | 20616 | SH |  | SOLE |  | 20616 | 0 | 0 |
| COMCAST CORP NEW | CL A | 20030N101 | BBG001S5PXL2 | 662509 | 18563 | SH |  | SOLE |  | 18563 | 0 | 0 |
| COSTCO WHSL CORP NEW | COM | 22160K105 | BBG001S9KRQ7 | 239565 | 242 | SH |  | SOLE |  | 242 | 0 | 0 |
| CRANE COMPANY | COMMON STOCK | 224408104 | BBG016G0L0V9 | 1852757 | 9757 | SH |  | SOLE |  | 9757 | 0 | 0 |
| DANAHER CORPORATION | COM | 235851102 | BBG001S5QGT0 | 728818 | 3689 | SH |  | SOLE |  | 3689 | 0 | 0 |
| DEERE  CO | COM | 244199105 | BBG001S5QFF7 | 5206477 | 10239 | SH |  | SOLE |  | 10239 | 0 | 0 |
| DISNEY WALT CO | COM | 254687106 | BBG001S5QHF3 | 302336 | 2438 | SH |  | SOLE |  | 2438 | 0 | 0 |
| EATON CORP PLC | SHS | G29183103 | BBG001S5QZ45 | 220263 | 617 | SH |  | SOLE |  | 617 | 0 | 0 |
| ELEVANCE HEALTH INC | COM | 036752103 | BBG001S6KBQ8 | 283941 | 730 | SH |  | SOLE |  | 730 | 0 | 0 |
| FERRARI N V | COM | N3167Y103 | BBG009PH3Q95 | 365601 | 745 | SH |  | SOLE |  | 745 | 0 | 0 |
| HOME DEPOT INC | COM | 437076102 | BBG001S5RTW7 | 381324 | 1040 | SH |  | SOLE |  | 1040 | 0 | 0 |
| INTERNATIONAL BUSINESS MACHS | COM | 459200101 | BBG001S5S399 | 527082 | 1788 | SH |  | SOLE |  | 1788 | 0 | 0 |
| INTUIT | COM | 461202103 | BBG001S6TWR2 | 472578 | 600 | SH |  | SOLE |  | 600 | 0 | 0 |
| INVESCO EXCH TRADED FD TR II | S LOW VOL | 46138E354 | BBG001V18CG8 | 523669 | 7191 | SH |  | SOLE |  | 7191 | 0 | 0 |
| ISHARES INC | MSCI SWITZERLAND | 464286749 | BBG001S8SYW9 | 389224 | 7101 | SH |  | SOLE |  | 7101 | 0 | 0 |
| ISHARES TR | GLOB HLTHCRE ETF | 464287325 | BBG001SJX8Q3 | 384937 | 4471 | SH |  | SOLE |  | 4471 | 0 | 0 |
| ISHARES TR | RUS 1000 GRW ETF | 464287614 | BBG001S56320 | 218234 | 514 | SH |  | SOLE |  | 514 | 0 | 0 |
| ISHARES TR | RUSSELL 2000 ETF | 464287655 | BBG001SFC7Y7 | 535506 | 2482 | SH |  | SOLE |  | 2482 | 0 | 0 |
| ISHARES TR | S 100 ETF | 464287101 | BBG001SGB026 | 835745 | 2746 | SH |  | SOLE |  | 2746 | 0 | 0 |
| JOHNSON  JOHNSON | COM | 478160104 | BBG001S5SHQ9 | 855935 | 5604 | SH |  | SOLE |  | 5604 | 0 | 0 |
| JPMORGAN CHASE  CO. | COM | 46625H100 | BBG001S8CRC3 | 318901 | 1100 | SH |  | SOLE |  | 1100 | 0 | 0 |
| LABCORP HOLDINGS INC | COM SHS | 504922105 | BBG01MMT6PQ2 | 1133115 | 4316 | SH |  | SOLE |  | 4316 | 0 | 0 |
| LIBERTY BROADBAND CORP | COM SER C | 530307305 | BBG006GNSZX4 | 564406 | 5737 | SH |  | SOLE |  | 5737 | 0 | 0 |
| LOCKHEED MARTIN CORP | COM | 539830109 | BBG001S7PS57 | 454803 | 982 | SH |  | SOLE |  | 982 | 0 | 0 |
| LOUISIANA PAC CORP | COM | 546347105 | BBG001S5SW04 | 2891283 | 33623 | SH |  | SOLE |  | 33623 | 0 | 0 |
| MARKEL GROUP INC | COM | 570535104 | BBG001S9ZK95 | 4334271 | 2170 | SH |  | SOLE |  | 2170 | 0 | 0 |
| MASTERCARD INCORPORATED | CL A | 57636Q104 | BBG001SKNNS6 | 13173785 | 23443 | SH |  | SOLE |  | 23443 | 0 | 0 |
| META PLATFORMS INC | CL A | 30303M102 | BBG001SQCQC5 | 31568599 | 42771 | SH |  | SOLE |  | 42771 | 0 | 0 |
| MICROSOFT CORP | COM | 594918104 | BBG001S5TD05 | 3790155 | 7620 | SH |  | SOLE |  | 7620 | 0 | 0 |
| MOODYS CORP | COM | 615369105 | BBG001S5VP87 | 7491523 | 14936 | SH |  | SOLE |  | 14936 | 0 | 0 |
| PAYCHEX INC | COM | 704326107 | BBG001S5V135 | 1267248 | 8712 | SH |  | SOLE |  | 8712 | 0 | 0 |
| PERIMETER SOLUTIONS INC | COMMON STOCK | 71385M107 | BBG01QXPR8M8 | 28839734 | 2071820 | SH |  | SOLE |  | 2071820 | 0 | 0 |
| PROCTER AND GAMBLE CO | COM | 742718109 | BBG001S5V4L9 | 495118 | 3108 | SH |  | SOLE |  | 3108 | 0 | 0 |
| REPUBLIC SVCS INC | COM | 760759100 | BBG001S9DL33 | 385451 | 1563 | SH |  | SOLE |  | 1563 | 0 | 0 |
| RTX CORPORATION | COM | 75513E101 | BBG001S5X5Q9 | 478201 | 3275 | SH |  | SOLE |  | 3275 | 0 | 0 |
| SCHWAB CHARLES CORP | COM | 808513105 | BBG001S5VXD4 | 4098112 | 44916 | SH |  | SOLE |  | 44916 | 0 | 0 |
| SHERWIN WILLIAMS CO | COM | 824348106 | BBG001S5W2F9 | 3634225 | 10584 | SH |  | SOLE |  | 10584 | 0 | 0 |
| SPDR S 500 ETF TR | TR UNIT | 78462F103 | BBG001S72SM3 | 3216527 | 5206 | SH |  | SOLE |  | 5206 | 0 | 0 |
| SYSCO CORP | COM | 871829107 | BBG001S5WJS8 | 1183389 | 15624 | SH |  | SOLE |  | 15624 | 0 | 0 |
| TESLA INC | COM | 88160R101 | BBG001SQKGD7 | 18862333 | 59379 | SH |  | SOLE |  | 59379 | 0 | 0 |
| TJX COS INC NEW | COM | 872540109 | BBG001S5WQ93 | 5816303 | 47099 | SH |  | SOLE |  | 47099 | 0 | 0 |
| TRANSDIGM GROUP INC | COM | 893641100 | BBG001SPV1C1 | 35930071 | 23628 | SH |  | SOLE |  | 23628 | 0 | 0 |
| UNION PAC CORP | COM | 907818108 | BBG001S5X2M0 | 1951322 | 8481 | SH |  | SOLE |  | 8481 | 0 | 0 |
| VANGUARD INDEX FDS | GROWTH ETF | 922908736 | BBG001SHTTS4 | 259971 | 593 | SH |  | SOLE |  | 593 | 0 | 0 |
| VANGUARD INDEX FDS | MCAP VL IDXVIP | 922908512 | BBG001SRN7W1 | 1372786 | 8347 | SH |  | SOLE |  | 8347 | 0 | 0 |
| VANGUARD INDEX FDS | S 500 ETF SHS | 922908363 | BBG001TC6MC1 | 284015 | 500 | SH |  | SOLE |  | 500 | 0 | 0 |
| VANGUARD INTL EQUITY INDEX F | FTSE EMR MKT ETF | 922042858 | BBG001SHTTZ6 | 214508 | 4337 | SH |  | SOLE |  | 4337 | 0 | 0 |
| VISA INC | COM CL A | 92826C839 | BBG001SRCFY3 | 5922453 | 16681 | SH |  | SOLE |  | 16681 | 0 | 0 |
| WALMART INC | COM | 931142103 | BBG001S5XH92 | 326364 | 3338 | SH |  | SOLE |  | 3338 | 0 | 0 |
| WASTE MGMT INC DEL | COM | 94106L109 | BBG001S5XH47 | 3136076 | 13705 | SH |  | SOLE |  | 13705 | 0 | 0 |
| WOODWARD INC | COM | 980745103 | BBG001S6YZC5 | 7222467 | 29469 | SH |  | SOLE |  | 29469 | 0 | 0 |

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