13F-HR 1 form13f_ms-research.sept2010.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 13F FORM 13F COVER PAGE Report for the Calendar Year or Quarter Ended: September 30, 2010 Check here if Amendment [ ]; Amendment Number: ______ This Amendment: [ ] is a restatement. [ ] adds new holdings entries. Institutional Investment Manager Filing this Report: Name: Main Street Research LLC Address: 30 Liberty Ship Way, Suite 3330 Sausalito, CA 94965 Form 13F File Number: 028-14411 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: Charito A. Mittelman Title: Chief Compliance Officer Phone: 415-289-1010 Signature, Place, and Date of Signing: Charito A. Mittelman Sausalito, CA May 06, 2011 Report Type: [x] 13F HOLDINGS REPORT. [ ] 13F NOTICE. [ ] 13F COMBINATION REPORT. FORM 13F SUMMARy: Report Summary: Number of Other Included Managers: 0 Form 13F Information Table Entry Total: 133 Form 13F Information Table Value Total: $197,789 List of Other Included Managers: NONE FORM 13F INFORMATION TABLE FORM 13F INFORMATION TABLE VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY NAME OF ISSUER TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE ------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- -------- 1/100 Berkshire Hathaway Cl A COM 084990175 871 700 SH Sole 700 3M Company COM 88579Y101 1413 16299 SH Sole 16299 AFLAC Inc COM 001055102 342 6623 SH Sole 6623 Abbott Laboratories COM 002824100 800 15313 SH Sole 15313 Advent Software Inc COM 007974108 3998 76607 SH Sole 76607 Agilent Technologies COM 00846u101 311 9312 SH Sole 9312 Alberto Culver COM 013078100 285 7575 SH Sole 7575 Altria Group Inc COM 02209S103 298 12407 SH Sole 12407 Aluminum Corp China COM 022276109 1526 64106 SH Sole 64106 American Electric Power COM 025537101 5345 147532 SH Sole 147532 American Express COM 025816109 763 18162 SH Sole 18162 Apple Computer COM 037833100 6017 21204 SH Sole 21204 Astrazeneca Plc Adr F COM 046353108 277 5454 SH Sole 5454 At&t Inc COM 00206R102 1715 59981 SH Sole 59981 Auto Data Processing COM 053015103 454 10793 SH Sole 10793 BASF AG Spons Adr COM 055262505 697 10980 SH Sole 10980 Bank America Corp New COM 060505104 246 18761 SH Sole 18761 Bard C R Inc COM 067383109 2892 35517 SH Sole 35517 Berkshire Hathaway CL B COM 084670702 390 4721 SH Sole 4721 Best Buy Inc COM 086516101 1861 45575 SH Sole 45575 Biogen IDEC Inc COM 09062X103 341 6075 SH Sole 6075 Borg Warner Automotive COM 099724106 743 14115 SH Sole 14115 Brasil Telecom S.A. COM 10553M101 623 31371 SH Sole 31371 Brazil Foods SA Adr COM 10552T107 609 39192 SH Sole 39192 Briggs & Stratton Corp COM 109043109 1560 82038 SH Sole 82038 Bristol-Myers Squibb Co. Com. COM 110122108 2666 98335 SH Sole 98335 C V S Caremark Corp COM 126650100 471 14959 SH Sole 14959 Canon Inc COM 138006309 1071 22920 SH Sole 22920 Cardinal Health COM 14149Y108 332 10040 SH Sole 10040 Caterpillar Inc COM 149123101 284 3610 SH Sole 3610 Celgene Corp COM 151020104 463 8034 SH Sole 8034 Charles Schwab Corp COM 808513105 1243 89444 SH Sole 89444 Chevron Corp COM 166764100 5408 66728 SH Sole 66728 China Mobile Hong Kong Ltd COM 16941M109 2313 45241 SH Sole 45241 Cisco Systems, Inc. COM 17275r102 1756 80163 SH Sole 80163 Citigroup Inc. COM 172967101 81 20654 SH Sole 20654 Clorox Co. Calif. COM 189054109 884 13247 SH Sole 13247 Cnooc Ltd COM 126132109 3566 18351 SH Sole 18351 Coca Cola Co. COM 191216100 782 13358 SH Sole 13358 Colgate-Palmolive Co COM 194162103 1503 19551 SH Sole 19551 Comcast Corp Cl A COM 20030N101 228 12587 SH Sole 12587 Computer Sciences Corp COM 205363104 260 5650 SH Sole 5650 Conoco Phillips COM 20825c104 353 6143 SH Sole 6143 Corning Inc COM 219350105 2030 111077 SH Sole 111077 Costco Corp COM 22160K105 2199 34106 SH Sole 34106 Danaher Corp Del COM 235851102 3753 92425 SH Sole 92425 Diageo Plc New ADR COM 25243q205 2663 38583 SH Sole 38583 Dominion Resources COM 25746u109 248 5685 SH Sole 5685 DuPont COM 263534109 246 5518 SH Sole 5518 Emerson Electric Co COM 291011104 4951 94009 SH Sole 94009 Exxon Mobil Corp COM 30231G102 3003 48594 SH Sole 48594 Fastenal Company COM 311900104 387 7275 SH Sole 7275 FedEx Corp COM 31428X106 1390 16253 SH Sole 16253 Forest Laboratories COM 345838106 271 8765 SH Sole 8765 Franklin Resources Inc COM 354613101 304 2846 SH Sole 2846 Freeport McMoran Cp & Gold COM 35671d857 1775 20786 SH Sole 20786 Frontier Communications COM 35906a108 112 13732 SH Sole 13732 General Electric Co. COM 369604103 547 33655 SH Sole 33655 General Mills, Inc. COM 370334104 872 23861 SH Sole 23861 Gilead Sciences COM 375558103 2636 74030 SH Sole 74030 GlaxoSmithKline PLC COM 37733w105 258 6527 SH Sole 6527 Gold Corp Inc COM 380956409 404 9291 SH Sole 9291 Hewlett Packard COM 428236103 1319 31356 SH Sole 31356 Honda Motor Ltd COM 438128308 660 18553 SH Sole 18553 Int'l Business Machines COM 459200101 2803 20894 SH Sole 20894 Intel Corp COM 458140100 487 25383 SH Sole 25383 Intuitive Surgical Inc COM 46120e602 284 1001 SH Sole 1001 J P Morgan Chase & Co. COM 46625h100 849 22315 SH Sole 22315 Johnson & Johnson COM 478160104 3768 60806 SH Sole 60806 Johnson Controls Inc COM 478366107 3969 130147 SH Sole 130147 Kellogg Co. COM 487836108 455 9009 SH Sole 9009 Kons Philips Elec NV New COM 500472303 906 28921 SH Sole 28921 Korea Electric Power Corp. COM 500631106 1272 98361 SH Sole 98361 Kraft foods Inc COM 50075n104 452 14661 SH Sole 14661 Massmutual Corporate Investors COM 576292106 314 10575 SH Sole 10575 McDonald's Corp. COM 580135101 2980 39988 SH Sole 39988 Medco Health Solutions COM 58405U102 378 7258 SH Sole 7258 Merck & Co Inc COM 589331107 588 15978 SH Sole 15978 Microsoft Corp COM 594918104 229 9344 SH Sole 9344 Morgan Stanley COM 617446448 3019 122319 SH Sole 122319 Nestle SA ADR COM 641069406 294 5479 SH Sole 5479 Newmont Mining Corp. COM 651639106 830 13217 SH Sole 13217 Noble Energy Inc COM 655044105 1164 15497 SH Sole 15497 Novartis A G COM 66987V109 309 5357 SH Sole 5357 Nucor Corp COM 670346105 1567 41033 SH Sole 41033 Oracle COM 68389X105 1140 42449 SH Sole 42449 Pac Mercantile Bancorp COM 694552100 38 12650 SH Sole 12650 Pacific Gas & Electric COM 69331C108 3398 74812 SH Sole 74812 Parker-Hannifin Corp COM 701094104 2452 34993 SH Sole 34993 Pepsico COM 713448108 2069 31147 SH Sole 31147 Perrigo Company COM 714290103 630 9815 SH Sole 9815 PetroChina Co. Ltd. COM 71646e100 236 2029 SH Sole 2029 Petroleo Brasileiro COM 71654v408 785 21651 SH Sole 21651 Pfizer, Inc. COM 717081103 343 20002 SH Sole 20002 Philip Morris International COM 718172109 603 10768 SH Sole 10768 Procter & Gamble Co. COM 742718109 19181 319842 SH Sole 319842 Qualcomm Inc COM 747525103 983 21783 SH Sole 21783 Ross Stores Inc COM 778296103 239 4365 SH Sole 4365 S A P Aktiengesell ADR COM 803054204 1219 24725 SH Sole 24725 Salesforce.com COM 79466l302 1743 15590 SH Sole 15590 Sanofi Aventis Adr COM 80105n105 282 8488 SH Sole 8488 Sempra Energy COM 816851109 371 6896 SH Sole 6896 Siemens AG Adr COM 826197501 1627 15432 SH Sole 15432 Sirius XM Radio COM 82967N108 61 51130 SH Sole 51130 Smith & Nephew Adr COM 83175M205 2557 56328 SH Sole 56328 Smucker JM Company COM 832696405 244 4037 SH Sole 4037 Snap-on Inc. COM 833034101 964 20732 SH Sole 20732 St. Jude Medical COM 790849103 203 5160 SH Sole 5160 Stanley Black & Decker COM 854502101 696 11352 SH Sole 11352 Sysco Corp. COM 871829107 242 8498 SH Sole 8498 Target Corp COM 87612E106 3326 62244 SH Sole 62244 Tata Motors Ltd COM 876568502 3115 122110 SH Sole 122110 Teva Pharm Inds Ltd COM 881624209 298 5644 SH Sole 5644 The Southern Company COM 842587107 277 7432 SH Sole 7432 Total Fina Elf COM 89151e109 491 9518 SH Sole 9518 Unilever PLC Amer Shs F COM 904767704 670 23030 SH Sole 23030 United Technologies COM 913017109 1406 19744 SH Sole 19744 VMware Inc COM 928563402 5728 67431 SH Sole 67431 Verizon Communications COM 92343v104 538 16500 SH Sole 16500 Wal-Mart Stores Inc. COM 931142103 236 4415 SH Sole 4415 Walgreen Co. COM 931422109 233 6949 SH Sole 6949 Watson Pharmaceuticals COM 942683103 5385 127272 SH Sole 127272 Wells Fargo COM 949746101 465 18529 SH Sole 18529 Wesco Financial Corp COM 950817106 646 1805 SH Sole 1805 Westamerica Bancorp COM 957090103 2786 51121 SH Sole 51121 Whole Foods Market Inc COM 966837106 3231 87076 SH Sole 87076 Yum Brands Inc COM 988498101 3276 71120 SH Sole 71120 Zimmer Holdings Inc COM 98956P102 203 3878 SH Sole 3878 Buckeye Partners LP ETF 118230101 3787 59636 SH Sole 59636 IShares Trust MSCI EAFE Index ETF 464287465 254 4634 SH Sole 4634 Kinder Morgan Energy LP ETF 494550106 3568 52086 SH Sole 52086 PowerShares QQQ Trust ETF 73935a104 241 4907 SH Sole 4907 Vanguard Total Stock Market VI ETF 922908769 336 5749 SH Sole 5749 Total $197,789