# EDGAR Filing Document

**Accession Number:** 0001513211
**File Stem:** 0001941040-23-000054
**Filing Date:** 2023-2
**Character Count:** 12885
**Document Hash:** 013edb53fac6177ac42a8a37518cd2f9
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001941040-23-000054.hdr.sgml**: 20230206

**ACCESSION NUMBER**: 0001941040-23-000054

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

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20221231

**FILED AS OF DATE**: 20230206

**DATE AS OF CHANGE**: 20230206

**EFFECTIVENESS DATE**: 20230206

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Main Street Research LLC
- **CENTRAL INDEX KEY:** 0001513211
- **IRS NUMBER:** 680313978
- **STATE OF INCORPORATION:** CA
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 13F-HR
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 028-14411
- **FILM NUMBER:** 23589927

**BUSINESS ADDRESS:**
- **STREET 1:** 30 LIBERTY SHIP WAY, SUITE 3330
- **CITY:** SAUSALITO
- **STATE:** CA
- **ZIP:** 94965
- **BUSINESS PHONE:** 1-415-289-1010

**MAIL ADDRESS:**
- **STREET 1:** 30 LIBERTY SHIP WAY, SUITE 3330
- **CITY:** SAUSALITO
- **STATE:** CA
- **ZIP:** 94965

### FORM 13F COVER PAGE

**Report for the Calendar Year or Quarter Ended:** 12-31-2022

**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:** Main Street Research LLC<br>**Address:** 30 Liberty Ship Way Suite 3330<br>Sausalito, CA 94965

**Form 13F File Number:** 028-14411

**CRD Number (if applicable):** 000114629

**SEC File Number (if applicable):** 801-57739

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:** Manoj Pombra<br>**Title:** Chief Compliance Officer<br>**Phone:** 415-289-1010

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

Manoj Pombra  Sausalito, CA  02-06-2023<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:** 98

**Form 13F Information Table Value Total:** $410656889

      (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 |
| ABBOTT LABS | COM | 002824100 |  | 546408 | 4977 | SH |  | SOLE |  | 4977 | 0 | 0 |
| ABBVIE INC | COM | 00287Y109 |  | 1912063 | 11831 | SH |  | SOLE |  | 11831 | 0 | 0 |
| ACCENTURE PLC IRELAND | SHS CLASS A | G1151C101 |  | 997982 | 3740 | SH |  | SOLE |  | 3740 | 0 | 0 |
| ADOBE SYSTEMS INCORPORATED | COM | 00724F101 |  | 397778 | 1182 | SH |  | SOLE |  | 1182 | 0 | 0 |
| ALBEMARLE CORP | COM | 012653101 |  | 368711 | 1634 | SH |  | SOLE |  | 1634 | 0 | 0 |
| ALPHABET INC | CAP STK CL C | 02079K107 |  | 1068039 | 12037 | SH |  | SOLE |  | 12037 | 0 | 0 |
| ALPHABET INC | CAP STK CL A | 02079K305 |  | 1141784 | 12941 | SH |  | SOLE |  | 12941 | 0 | 0 |
| AMAZON COM INC | COM | 023135106 |  | 3027276 | 36039 | SH |  | SOLE |  | 36039 | 0 | 0 |
| AMERICAN ELEC PWR CO INC | COM | 025537101 |  | 11976993 | 126140 | SH |  | SOLE |  | 126140 | 0 | 0 |
| AMGEN INC | COM | 031162100 |  | 231648 | 882 | SH |  | SOLE |  | 882 | 0 | 0 |
| AON PLC | SHS CL A | G0403H108 |  | 213099 | 710 | SH |  | SOLE |  | 710 | 0 | 0 |
| APPLE INC | COM | 037833100 |  | 36843814 | 283567 | SH |  | SOLE |  | 283567 | 0 | 0 |
| ARISTA NETWORKS INC | COM | 040413106 |  | 1058293 | 8721 | SH |  | SOLE |  | 8721 | 0 | 0 |
| ASML HOLDING N V | N Y REGISTRY SHS | N07059210 |  | 309262 | 566 | SH |  | SOLE |  | 566 | 0 | 0 |
| AT INC | COM | 00206R102 |  | 252199 | 13699 | SH |  | SOLE |  | 13699 | 0 | 0 |
| AUTODESK INC | COM | 052769106 |  | 2859485 | 15302 | SH |  | SOLE |  | 15302 | 0 | 0 |
| AUTOMATIC DATA PROCESSING IN | COM | 053015103 |  | 800767 | 3335 | SH |  | SOLE |  | 3335 | 0 | 0 |
| BANCO SANTANDER S.A. | ADR | 05964H105 |  | 52330 | 17739 | SH |  | SOLE |  | 17739 | 0 | 0 |
| BANK AMERICA CORP | COM | 060505104 |  | 10998788 | 332089 | SH |  | SOLE |  | 332089 | 0 | 0 |
| BERKSHIRE HATHAWAY INC DEL | CL B NEW | 084670702 |  | 3566251 | 11545 | SH |  | SOLE |  | 11545 | 0 | 0 |
| BERKSHIRE HATHAWAY INC DEL | CL A | 084670108 |  | 2343555 | 5 | SH |  | SOLE |  | 500 | 0 | 0 |
| BOX INC | CL A | 10316T104 |  | 444599 | 14282 | SH |  | SOLE |  | 14282 | 0 | 0 |
| BRISTOL-MYERS SQUIBB CO | COM | 110122108 |  | 1607918 | 22348 | SH |  | SOLE |  | 22348 | 0 | 0 |
| BROADCOM INC | COM | 11135F101 |  | 310876 | 556 | SH |  | SOLE |  | 556 | 0 | 0 |
| CATERPILLAR INC | COM | 149123101 |  | 1656318 | 6914 | SH |  | SOLE |  | 6914 | 0 | 0 |
| CHEVRON CORP NEW | COM | 166764100 |  | 3482004 | 19399 | SH |  | SOLE |  | 19399 | 0 | 0 |
| CHUBB LIMITED | COM | H1467J104 |  | 11793465 | 53260 | SH |  | SOLE |  | 53260 | 0 | 0 |
| CISCO SYS INC | COM | 17275R102 |  | 1278350 | 26834 | SH |  | SOLE |  | 26834 | 0 | 0 |
| CLEAN ENERGY FUELS CORP | COM | 184499101 |  | 52000 | 10000 | SH |  | SOLE |  | 10000 | 0 | 0 |
| CLOROX CO DEL | COM | 189054109 |  | 1405405 | 10015 | SH |  | SOLE |  | 10015 | 0 | 0 |
| COCA COLA CO | COM | 191216100 |  | 26650002 | 418959 | SH |  | SOLE |  | 418959 | 0 | 0 |
| COINBASE GLOBAL INC | COM CL A | 19260Q107 |  | 216021 | 6104 | SH |  | SOLE |  | 6104 | 0 | 0 |
| COLGATE PALMOLIVE CO | COM | 194162103 |  | 666022 | 8453 | SH |  | SOLE |  | 8453 | 0 | 0 |
| COMCAST CORP NEW | CL A | 20030N101 |  | 431498 | 12339 | SH |  | SOLE |  | 12339 | 0 | 0 |
| COSTCO WHSL CORP NEW | COM | 22160K105 |  | 3491823 | 7649 | SH |  | SOLE |  | 7649 | 0 | 0 |
| DEERE  CO | COM | 244199105 |  | 295383 | 687 | SH |  | SOLE |  | 687 | 0 | 0 |
| DOMINION ENERGY INC | COM | 25746U109 |  | 324873 | 5298 | SH |  | SOLE |  | 5298 | 0 | 0 |
| ELEVANCE HEALTH INC | COM | 036752103 |  | 30495040 | 59448 | SH |  | SOLE |  | 59448 | 0 | 0 |
| ENBRIDGE INC | COM | 29250N105 |  | 10297454 | 263362 | SH |  | SOLE |  | 263362 | 0 | 0 |
| EXXON MOBIL CORP | COM | 30231G102 |  | 2009115 | 18215 | SH |  | SOLE |  | 18215 | 0 | 0 |
| FAIR ISAAC CORP | COM | 303250104 |  | 1287546 | 2151 | SH |  | SOLE |  | 2151 | 0 | 0 |
| FORTINET INC | COM | 34959E109 |  | 227583 | 4655 | SH |  | SOLE |  | 4655 | 0 | 0 |
| GARTNER INC | COM | 366651107 |  | 716987 | 2133 | SH |  | SOLE |  | 2133 | 0 | 0 |
| GENERAL DYNAMICS CORP | COM | 369550108 |  | 24366387 | 98208 | SH |  | SOLE |  | 98208 | 0 | 0 |
| GILEAD SCIENCES INC | COM | 375558103 |  | 230851 | 2689 | SH |  | SOLE |  | 2689 | 0 | 0 |
| GOLDMAN SACHS GROUP INC | COM | 38141G104 |  | 294407 | 857 | SH |  | SOLE |  | 857 | 0 | 0 |
| HOME DEPOT INC | COM | 437076102 |  | 340813 | 1079 | SH |  | SOLE |  | 1079 | 0 | 0 |
| INTEL CORP | COM | 458140100 |  | 247548 | 9366 | SH |  | SOLE |  | 9366 | 0 | 0 |
| INTUIT | COM | 461202103 |  | 835655 | 2147 | SH |  | SOLE |  | 2147 | 0 | 0 |
| INVESCO QQQ TR | UNIT SER 1 | 46090E103 |  | 217208 | 816 | SH |  | SOLE |  | 816 | 0 | 0 |
| ISHARES TR | CORE S ETF | 464287200 |  | 368457 | 959 | SH |  | SOLE |  | 959 | 0 | 0 |
| JOHNSON  JOHNSON | COM | 478160104 |  | 2996168 | 16961 | SH |  | SOLE |  | 16961 | 0 | 0 |
| LENSAR INC | COM | 52634L108 |  | 128727 | 43489 | SH |  | SOLE |  | 43489 | 0 | 0 |
| LILLY ELI  CO | COM | 532457108 |  | 1107420 | 3027 | SH |  | SOLE |  | 3027 | 0 | 0 |
| LOCAL BOUNTI CORP | COMMON STOCK | 53960E106 |  | 838356 | 603134 | SH |  | SOLE |  | 603134 | 0 | 0 |
| MASTERCARD INCORPORATED | CL A | 57636Q104 |  | 243063 | 699 | SH |  | SOLE |  | 699 | 0 | 0 |
| MCDONALDS CORP | COM | 580135101 |  | 5583016 | 21186 | SH |  | SOLE |  | 21186 | 0 | 0 |
| MCKESSON CORP | COM | 58155Q103 |  | 38616112 | 102795 | SH |  | SOLE |  | 102795 | 0 | 0 |
| MERCK  CO INC | COM | 58933Y105 |  | 753282 | 6745 | SH |  | SOLE |  | 6745 | 0 | 0 |
| META PLATFORMS INC | CL A | 30303M102 |  | 1094613 | 9096 | SH |  | SOLE |  | 9096 | 0 | 0 |
| MICROSOFT CORP | COM | 594918104 |  | 3764332 | 15696 | SH |  | SOLE |  | 15696 | 0 | 0 |
| NETEASE INC | SPONSORED ADS | 64110W102 |  | 296694 | 4085 | SH |  | SOLE |  | 4085 | 0 | 0 |
| NEXTERA ENERGY INC | COM | 65339F101 |  | 636614 | 7615 | SH |  | SOLE |  | 7615 | 0 | 0 |
| NIKE INC | CL B | 654106103 |  | 384571 | 3287 | SH |  | SOLE |  | 3287 | 0 | 0 |
| NORFOLK SOUTHN CORP | COM | 655844108 |  | 490622 | 1991 | SH |  | SOLE |  | 1991 | 0 | 0 |
| NOVO-NORDISK A S | ADR | 670100205 |  | 32658219 | 241305 | SH |  | SOLE |  | 241305 | 0 | 0 |
| NVIDIA CORPORATION | COM | 67066G104 |  | 1059111 | 7247 | SH |  | SOLE |  | 7247 | 0 | 0 |
| ON SEMICONDUCTOR CORP | COM | 682189105 |  | 9874107 | 158315 | SH |  | SOLE |  | 158315 | 0 | 0 |
| PALANTIR TECHNOLOGIES INC | CL A | 69608A108 |  | 147140 | 22919 | SH |  | SOLE |  | 22919 | 0 | 0 |
| PALO ALTO NETWORKS INC | COM | 697435105 |  | 2016493 | 14451 | SH |  | SOLE |  | 14451 | 0 | 0 |
| PEPSICO INC | COM | 713448108 |  | 371074 | 2041 | SH |  | SOLE |  | 2041 | 0 | 0 |
| PFIZER INC | COM | 717081103 |  | 429126 | 8375 | SH |  | SOLE |  | 8375 | 0 | 0 |
| PROCTER AND GAMBLE CO | COM | 742718109 |  | 39117642 | 258100 | SH |  | SOLE |  | 258100 | 0 | 0 |
| RAYTHEON TECHNOLOGIES CORP | COM | 75513E101 |  | 294283 | 2916 | SH |  | SOLE |  | 2916 | 0 | 0 |
| RESMED INC | COM | 761152107 |  | 249756 | 1200 | SH |  | SOLE |  | 1200 | 0 | 0 |
| ROBINHOOD MKTS INC | COM CL A | 770700102 |  | 326259 | 40081 | SH |  | SOLE |  | 40081 | 0 | 0 |
| SALESFORCE INC | COM | 79466L302 |  | 238927 | 1802 | SH |  | SOLE |  | 1802 | 0 | 0 |
| SCHWAB CHARLES CORP | COM | 808513105 |  | 3492096 | 41942 | SH |  | SOLE |  | 41942 | 0 | 0 |
| SKILLZ INC | COM | 83067L109 |  | 7095 | 14008 | SH |  | SOLE |  | 14008 | 0 | 0 |
| SMUCKER J M CO | COM NEW | 832696405 |  | 560790 | 3539 | SH |  | SOLE |  | 3539 | 0 | 0 |
| SNAP INC | CL A | 83304A106 |  | 819149 | 91525 | SH |  | SOLE |  | 91525 | 0 | 0 |
| SPDR DOW JONES INDL AVERAGE | UT SER 1 | 78467X109 |  | 282268 | 850 | SH |  | SOLE |  | 850 | 0 | 0 |
| SPDR S 500 ETF TR | TR UNIT | 78462F103 |  | 610230 | 1587 | SH |  | SOLE |  | 1587 | 0 | 0 |
| STARBUCKS CORP | COM | 855244109 |  | 579148 | 5838 | SH |  | SOLE |  | 5838 | 0 | 0 |
| T-MOBILE US INC | COM | 872590104 |  | 21832160 | 155944 | SH |  | SOLE |  | 155944 | 0 | 0 |
| TESLA INC | COM | 88160R101 |  | 1778719 | 14440 | SH |  | SOLE |  | 14440 | 0 | 0 |
| TEXAS INSTRS INC | COM | 882508104 |  | 538617 | 3260 | SH |  | SOLE |  | 3260 | 0 | 0 |
| THERMO FISHER SCIENTIFIC INC | COM | 883556102 |  | 730623 | 1326 | SH |  | SOLE |  | 1326 | 0 | 0 |
| TMC THE METALS COMPANY INC | COM | 87261Y106 |  | 11550 | 15000 | SH |  | SOLE |  | 15000 | 0 | 0 |
| ULTA BEAUTY INC | COM | 90384S303 |  | 381354 | 813 | SH |  | SOLE |  | 813 | 0 | 0 |
| UNITEDHEALTH GROUP INC | COM | 91324P102 |  | 372605 | 703 | SH |  | SOLE |  | 703 | 0 | 0 |
| VEEVA SYS INC | CL A COM | 922475108 |  | 278058 | 1723 | SH |  | SOLE |  | 1723 | 0 | 0 |
| VISA INC | COM CL A | 92826C839 |  | 24995046 | 120307 | SH |  | SOLE |  | 120307 | 0 | 0 |
| WALMART INC | COM | 931142103 |  | 602537 | 4233 | SH |  | SOLE |  | 4233 | 0 | 0 |
| WELLS FARGO CO NEW | COM | 949746101 |  | 1089497 | 26386 | SH |  | SOLE |  | 26386 | 0 | 0 |
| XENON PHARMACEUTICALS INC | COM | 98420N105 |  | 394300 | 10000 | SH |  | SOLE |  | 10000 | 0 | 0 |
| XYLEM INC | COM | 98419M100 |  | 359353 | 3250 | SH |  | SOLE |  | 3250 | 0 | 0 |
| YUM BRANDS INC | COM | 988498101 |  | 217834 | 1701 | SH |  | SOLE |  | 1701 | 0 | 0 |

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