# EDGAR Filing Document

**Accession Number:** 0001291424
**File Stem:** 0001172661-26-002034
**Filing Date:** 2026-5
**Character Count:** 11115
**Document Hash:** e9783af0f392abcd16852d37aabe6e4c
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001172661-26-002034.hdr.sgml**: 20260515

**ACCESSION NUMBER**: 0001172661-26-002034

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

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20260331

**FILED AS OF DATE**: 20260515

**DATE AS OF CHANGE**: 20260515

**EFFECTIVENESS DATE**: 20260515

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** American Trust Investment Advisors, LLC
- **CENTRAL INDEX KEY:** 0001291424

**ORGANIZATION NAME:**
- **EIN:** 020448023
- **STATE OF INCORPORATION:** NH

**FILING VALUES:**
- **FORM TYPE:** 13F-HR
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 028-11412
- **FILM NUMBER:** 26982676

**BUSINESS ADDRESS:**
- **STREET 1:** 67 ETNA ROAD
- **STREET 2:** SUITE 360
- **CITY:** LEBANON
- **STATE:** NH
- **ZIP:** 03766
- **BUSINESS PHONE:** 603-448-6415

**MAIL ADDRESS:**
- **STREET 1:** 67 ETNA ROAD
- **STREET 2:** SUITE 360
- **CITY:** LEBANON
- **STATE:** NH
- **ZIP:** 03766

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** American Trust CO
- **DATE OF NAME CHANGE:** 20040521

### FORM 13F COVER PAGE

**Report for the Calendar Year or Quarter Ended:** 03-31-2026

**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:** American Trust Investment Advisors LLC<br>**Address:** 67 Etna Road<br>Suite 360<br>Lebanon, NH 03766

**Form 13F File Number:** 028-11412

**CRD Number (if applicable):** 000114439

**SEC File Number (if applicable):** 801-60454

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:** Paul H. Collins<br>**Title:** President<br>**Phone:** 603-448-6415

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

/s/  Paul H. Collins  Lebanon, NH  05-15-2026<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:** 76

**Form 13F Information Table Value Total:** $181010169

      (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 |
| ACCENTURE PLC IRELAND | SHS CLASS A | G1151C101 |  | 3973732 | 20040 | SH |  | SOLE |  | 20040 | 0 | 0 |
| ALPHABET INC | CAP STK CL A | 02079K305 |  | 5103902 | 17749 | SH |  | SOLE |  | 17749 | 0 | 0 |
| AMAZON COM INC | COM | 023135106 |  | 4368672 | 20976 | SH |  | SOLE |  | 20976 | 0 | 0 |
| AMERICA MOVIL SAB DE CV | SPON ADS RP CL B | 02390A101 |  | 2663679 | 104540 | SH |  | SOLE |  | 104540 | 0 | 0 |
| APPLE INC | COM | 037833100 |  | 8487499 | 33443 | SH |  | SOLE |  | 33443 | 0 | 0 |
| ASML HLDG NV | N Y REGISTRY SHS | N07059210 |  | 739665 | 560 | SH |  | SOLE |  | 560 | 0 | 0 |
| AUTOLIV INC | COM | 052800109 |  | 4287478 | 40771 | SH |  | SOLE |  | 40771 | 0 | 0 |
| AUTOMATIC DATA PROCESSING IN | COM | 053015103 |  | 461828 | 2273 | SH |  | SOLE |  | 2273 | 0 | 0 |
| BANCO SANTANDER SA | ADR | 05964H105 |  | 2431742 | 215580 | SH |  | SOLE |  | 215580 | 0 | 0 |
| BERKSHIRE HATHAWAY INC DEL | CL B NEW | 084670702 |  | 13022739 | 27176 | SH |  | SOLE |  | 27176 | 0 | 0 |
| BHP BILLITON LIMITED | SPONSORED ADS | 088606108 |  | 701359 | 9642 | SH |  | SOLE |  | 9642 | 0 | 0 |
| BJS WHSL CLUB HLDGS INC | COM | 05550J101 |  | 572312 | 5815 | SH |  | SOLE |  | 5815 | 0 | 0 |
| BP PLC | SPONSORED ADR | 055622104 |  | 472115 | 10045 | SH |  | SOLE |  | 10045 | 0 | 0 |
| BRISTOL-MYERS SQUIBB CO | COM | 110122108 |  | 223980 | 3693 | SH |  | SOLE |  | 3693 | 0 | 0 |
| BROOKFIELD RENEWABLE ENERGY | PARTNERSHIP UNIT | G16258108 |  | 333744 | 10225 | SH |  | SOLE |  | 10225 | 0 | 0 |
| BUNGE GLOBAL SA | COM SHS | H11356104 |  | 8210251 | 64546 | SH |  | SOLE |  | 64546 | 0 | 0 |
| BWX TECHNOLOGIES INC | COM | 05605H100 |  | 3841345 | 18785 | SH |  | SOLE |  | 18785 | 0 | 0 |
| CAMECO CORP | COM | 13321L108 |  | 2433950 | 22410 | SH |  | SOLE |  | 22410 | 0 | 0 |
| CARRIER GLOBAL CORPORATION | COM | 14448C104 |  | 4908036 | 87161 | SH |  | SOLE |  | 87161 | 0 | 0 |
| CBRE GROUP INC | CL A | 12504L109 |  | 2264078 | 16714 | SH |  | SOLE |  | 16714 | 0 | 0 |
| CHENIERE ENERGY INC | COM NEW | 16411R208 |  | 3747618 | 13207 | SH |  | SOLE |  | 13207 | 0 | 0 |
| CHUBB LTD SWITZ | COM | H1467J104 |  | 1103599 | 3386 | SH |  | SOLE |  | 3386 | 0 | 0 |
| CITIGROUP INC | COM NEW | 172967424 |  | 5842883 | 51520 | SH |  | SOLE |  | 51520 | 0 | 0 |
| COLGATE PALMOLIVE CO | COM | 194162103 |  | 229269 | 2690 | SH |  | SOLE |  | 2690 | 0 | 0 |
| CONOCOPHILLIPS | COM | 20825C104 |  | 2855952 | 21636 | SH |  | SOLE |  | 21636 | 0 | 0 |
| CONSTELLATION ENERGY CORP | COM | 21037T109 |  | 5158027 | 18471 | SH |  | SOLE |  | 18471 | 0 | 0 |
| COTERRA ENERGY INC | COM | 127097103 |  | 3591238 | 102198 | SH |  | SOLE |  | 102198 | 0 | 0 |
| CUMMINS INC | COM | 231021106 |  | 271700 | 505 | SH |  | SOLE |  | 505 | 0 | 0 |
| ELI LILLY  CO | COM | 532457108 |  | 754211 | 820 | SH |  | SOLE |  | 820 | 0 | 0 |
| EMBRAER S.A. | SPONSORED ADS | 29082A107 |  | 2827076 | 47642 | SH |  | SOLE |  | 47642 | 0 | 0 |
| EMERA INC | COM | 290876101 |  | 242855 | 4685 | SH |  | SOLE |  | 4685 | 0 | 0 |
| FIRST SOLAR INC | COM | 336433107 |  | 297863 | 1510 | SH |  | SOLE |  | 1510 | 0 | 0 |
| FLUOR CORP | COM | 343412102 |  | 4056171 | 86949 | SH |  | SOLE |  | 86949 | 0 | 0 |
| GENERAC HLDGS INC | COM | 368736104 |  | 269555 | 1380 | SH |  | SOLE |  | 1380 | 0 | 0 |
| HA SUSTAINABLE INFRA CAP INC | COM | 41068X100 |  | 330383 | 8990 | SH |  | SOLE |  | 8990 | 0 | 0 |
| HEXCEL CORP NEW | COM | 428291108 |  | 278804 | 3445 | SH |  | SOLE |  | 3445 | 0 | 0 |
| HONDA MOTOR CO LTD | ADR ECH CNV IN 3 | 438128308 |  | 201773 | 8300 | SH |  | SOLE |  | 8300 | 0 | 0 |
| HONEYWELL INTL INC | COM | 438516106 |  | 298134 | 1319 | SH |  | SOLE |  | 1319 | 0 | 0 |
| HSBC HLDGS PLC | SPON ADR NEW | 404280406 |  | 722200 | 8755 | SH |  | SOLE |  | 8755 | 0 | 0 |
| INTERNATIONAL BUSINESS MACHS | COM | 459200101 |  | 5758459 | 23757 | SH |  | SOLE |  | 23757 | 0 | 0 |
| IRON MTN INC DEL | COM | 46284V101 |  | 3794092 | 37146 | SH |  | SOLE |  | 37146 | 0 | 0 |
| ISHARES INC | MSCI EMRG CHN | 46434G764 |  | 863687 | 10980 | SH |  | SOLE |  | 10980 | 0 | 0 |
| ITRON INC | COM | 465741106 |  | 320427 | 3575 | SH |  | SOLE |  | 3575 | 0 | 0 |
| JACOBS SOLUTIONS INC | COM | 46982L108 |  | 4682249 | 36787 | SH |  | SOLE |  | 36787 | 0 | 0 |
| JOHNSON  JOHNSON | COM | 478160104 |  | 254706 | 1042 | SH |  | SOLE |  | 1042 | 0 | 0 |
| KONTOOR BRANDS INC | COM | 50050N103 |  | 1391320 | 19794 | SH |  | SOLE |  | 19794 | 0 | 0 |
| LAM RESEARCH CORP | COM NEW | 512807306 |  | 6865537 | 32133 | SH |  | SOLE |  | 32133 | 0 | 0 |
| LENNAR CORP | CL A | 526057104 |  | 2683269 | 30899 | SH |  | SOLE |  | 30899 | 0 | 0 |
| LOCKHEED MARTIN CORP | COM | 539830109 |  | 1967289 | 3255 | SH |  | SOLE |  | 3255 | 0 | 0 |
| MCCORMICK  CO INC | COM NON VTG | 579780206 |  | 2179512 | 43210 | SH |  | SOLE |  | 43210 | 0 | 0 |
| MERCK  CO INC | COM | 58933Y105 |  | 298680 | 2483 | SH |  | SOLE |  | 2483 | 0 | 0 |
| META PLATFORMS INC | CL A | 30303M102 |  | 5324242 | 9306 | SH |  | SOLE |  | 9306 | 0 | 0 |
| MICROSOFT CORP | COM | 594918104 |  | 5791310 | 15645 | SH |  | SOLE |  | 15645 | 0 | 0 |
| MONDELEZ INTL INC | CL A | 609207105 |  | 3651609 | 63352 | SH |  | SOLE |  | 63352 | 0 | 0 |
| MP MATERIALS CORP | COM CL A | 553368101 |  | 3017215 | 62520 | SH |  | SOLE |  | 62520 | 0 | 0 |
| NATIONAL GRID PLC | SPONSORED ADR NE | 636274409 |  | 357604 | 4227 | SH |  | SOLE |  | 4227 | 0 | 0 |
| NETFLIX INC. | COM | 64110L106 |  | 341333 | 3550 | SH |  | SOLE |  | 3550 | 0 | 0 |
| NEXTERA ENERGY INC | COM | 65339F101 |  | 333439 | 3590 | SH |  | SOLE |  | 3590 | 0 | 0 |
| NEXTPOWER INC | CLASS A COM | 65290E101 |  | 322471 | 2675 | SH |  | SOLE |  | 2675 | 0 | 0 |
| NOVARTIS AG | SPONSORED ADR | 66987V109 |  | 205449 | 1345 | SH |  | SOLE |  | 1345 | 0 | 0 |
| NXP SEMICONDUCTORS N V | COM | N6596X109 |  | 3927357 | 19950 | SH |  | SOLE |  | 19950 | 0 | 0 |
| ORMAT TECHNOLOGIES INC | COM | 686688102 |  | 270287 | 2415 | SH |  | SOLE |  | 2415 | 0 | 0 |
| PFIZER INC | COM | 717081103 |  | 224050 | 7979 | SH |  | SOLE |  | 7979 | 0 | 0 |
| PROSHARES TR | SP500 EX HLTH | 74347B565 |  | 428913 | 6040 | SH |  | SOLE |  | 6040 | 0 | 0 |
| SAP SE | SPON ADR | 803054204 |  | 723362 | 4225 | SH |  | SOLE |  | 4225 | 0 | 0 |
| SCHWAB CHARLES CORP | COM | 808513105 |  | 4838842 | 51488 | SH |  | SOLE |  | 51488 | 0 | 0 |
| SCHWAB STRATEGIC TR | US TIPS ETF | 808524870 |  | 1834227 | 68930 | SH |  | SOLE |  | 68930 | 0 | 0 |
| SONY GROUP CORP | SPONSORED ADR | 835699307 |  | 4721711 | 228102 | SH |  | SOLE |  | 228102 | 0 | 0 |
| SOUTHERN CO | COM | 842587107 |  | 4933716 | 51116 | SH |  | SOLE |  | 51116 | 0 | 0 |
| STATE STR SPDR S 500 ETF T | TR UNIT | 78462F103 |  | 804471 | 1237 | SH |  | SOLE |  | 1237 | 0 | 0 |
| TESLA INC | COM | 88160R101 |  | 272865 | 734 | SH |  | SOLE |  | 734 | 0 | 0 |
| TOYOTA MOTOR CORP | ADS | 892331307 |  | 729559 | 3540 | SH |  | SOLE |  | 3540 | 0 | 0 |
| TREX INC | COM | 89531P105 |  | 2245293 | 61650 | SH |  | SOLE |  | 61650 | 0 | 0 |
| UBS GROUP AG | SHS | H42097107 |  | 635278 | 16260 | SH |  | SOLE |  | 16260 | 0 | 0 |
| V F CORP | COM | 918204108 |  | 1139757 | 67084 | SH |  | SOLE |  | 67084 | 0 | 0 |
| XYLEM INC | COM | 98419M100 |  | 295165 | 2470 | SH |  | SOLE |  | 2470 | 0 | 0 |

---