# EDGAR Filing Document

**Accession Number:** 0001954929
**File Stem:** 0001214659-25-015365
**Filing Date:** 2025-10
**Character Count:** 11856
**Document Hash:** 079c80c2e7413de2a0e70bdc20f64f39
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001214659-25-015365.hdr.sgml**: 20251027

**ACCESSION NUMBER**: 0001214659-25-015365

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

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20250930

**FILED AS OF DATE**: 20251027

**DATE AS OF CHANGE**: 20251027

**EFFECTIVENESS DATE**: 20251027

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Summa Corp.
- **CENTRAL INDEX KEY:** 0001954929

**ORGANIZATION NAME:**
- **EIN:** 161231700
- **STATE OF INCORPORATION:** TX
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 13F-HR
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 028-23625
- **FILM NUMBER:** 251419715

**BUSINESS ADDRESS:**
- **STREET 1:** 25219 KUYKENDAHL RD
- **STREET 2:** SUITE 260
- **CITY:** TOMBALL
- **STATE:** TX
- **ZIP:** 77375
- **BUSINESS PHONE:** 281-362-9977

**MAIL ADDRESS:**
- **STREET 1:** 25219 KUYKENDAHL RD
- **STREET 2:** SUITE 260
- **CITY:** TOMBALL
- **STATE:** TX
- **ZIP:** 77375

### FORM 13F COVER PAGE

**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:** Summa Corp.<br>**Address:** 25219 KUYKENDAHL RD<br>SUITE 260<br>TOMBALL, TX 77375

**Form 13F File Number:** 028-23625

**CRD Number (if applicable):** 000106093

**SEC File Number (if applicable):** 801-15180

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:** Rodrigo De La Garza<br>**Title:** Director<br>**Phone:** 281-362-9977

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

/s/ Rodrigo De La Garza  Tomball, TX  10-27-2025<br>[Signature]  [City, State]  [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 are reported in this report, and all holdings are reported by other reporting manager(s).)

[x] **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:** 1

**Form 13F Information Table Entry Total:** 82

**Form 13F Information Table Value Total:** $227414771

      (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.]

|   No. | Name                         | Form 13F File Number   |   CRD Number | SEC File Number   |
|---:|:---|:---|---:|:---|
|     1 | POLEN CAPITAL MANAGEMENT LLC | 028-03687              |    000106093 | 801-15180         |

### 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 |  | 226493 | 1691 | SH |  | DFND | 1 | 1691 | 0 | 0 |
| ABBVIE INC | COM | 00287Y109 |  | 578850 | 2500 | SH |  | SOLE |  | 2500 | 0 | 0 |
| ADOBE INC | COM | 00724F101 |  | 451520 | 1280 | SH |  | SOLE |  | 1280 | 0 | 0 |
| ADVANCED MICRO DEVICES INC | COM | 007903107 |  | 20979309 | 129670 | SH |  | SOLE |  | 129670 | 0 | 0 |
| ALIBABA GROUP HLDG LTD | SPONSORED ADS | 01609W102 |  | 5917750 | 33110 | SH |  | SOLE |  | 33110 | 0 | 0 |
| ALPHABET INC | CAP STK CL C | 02079K107 |  | 853643 | 3505 | SH |  | SOLE |  | 3505 | 0 | 0 |
| ALPHABET INC | CAP STK CL C | 02079K107 |  | 276916 | 1137 | SH |  | DFND | 1 | 1137 | 0 | 0 |
| ALPHABET INC | CAP STK CL A | 02079K305 |  | 2682122 | 11033 | SH |  | SOLE |  | 11033 | 0 | 0 |
| AMAZON COM INC | COM | 023135106 |  | 4147677 | 18890 | SH |  | SOLE |  | 18890 | 0 | 0 |
| AMAZON COM INC | COM | 023135106 |  | 558586 | 2544 | SH |  | DFND | 1 | 2544 | 0 | 0 |
| AMERICAN EXPRESS CO | COM | 025816109 |  | 269050 | 810 | SH |  | SOLE |  | 810 | 0 | 0 |
| APPLE INC | COM | 037833100 |  | 3246533 | 12750 | SH |  | SOLE |  | 12750 | 0 | 0 |
| AT INC | COM | 00206R102 |  | 451840 | 16000 | SH |  | SOLE |  | 16000 | 0 | 0 |
| BERKSHIRE HATHAWAY INC DEL | CL B NEW | 084670702 |  | 2313107 | 4601 | SH |  | SOLE |  | 4601 | 0 | 0 |
| BITMINE IMMERSION TECNOLOGIE | COM NEW | 09175A206 |  | 1090530 | 21000 | SH |  | SOLE |  | 21000 | 0 | 0 |
| BLACKSTONE MTG TR INC | COM CL A | 09257W100 |  | 209874 | 11400 | SH |  | SOLE |  | 11400 | 0 | 0 |
| BROADCOM INC | COM | 11135F101 |  | 524227 | 1589 | SH |  | SOLE |  | 1589 | 0 | 0 |
| BROADCOM INC | COM | 11135F101 |  | 354323 | 1074 | SH |  | DFND | 1 | 1074 | 0 | 0 |
| COSTCO WHSL CORP NEW | COM | 22160K105 |  | 503543 | 544 | SH |  | SOLE |  | 544 | 0 | 0 |
| DBX ETF TR | XTRACK MSCI EAFE | 233051200 |  | 2183504 | 47038 | SH |  | SOLE |  | 47038 | 0 | 0 |
| DEERE  CO | COM | 244199105 |  | 224057 | 490 | SH |  | SOLE |  | 490 | 0 | 0 |
| ELI LILLY  CO | COM | 532457108 |  | 288414 | 378 | SH |  | DFND | 1 | 378 | 0 | 0 |
| ENTERPRISE PRODS PARTNERS L | COM | 293792107 |  | 484685 | 15500 | SH |  | SOLE |  | 15500 | 0 | 0 |
| EXXON MOBIL CORP | COM | 30231G102 |  | 789250 | 7000 | SH |  | SOLE |  | 7000 | 0 | 0 |
| FIRST TR EXCHANGE-TRADED FD | SHS | 337345102 |  | 220885 | 962 | SH |  | SOLE |  | 962 | 0 | 0 |
| GOLDMAN SACHS ETF TR | INNOVAT EQ ETF | 38149W820 |  | 247357 | 3350 | SH |  | SOLE |  | 3350 | 0 | 0 |
| HONEYWELL INTL INC | COM | 438516106 |  | 254705 | 1210 | SH |  | SOLE |  | 1210 | 0 | 0 |
| INVESCO QQQ TR | UNIT SER 1 | 46090E103 |  | 1006220 | 1676 | SH |  | SOLE |  | 1676 | 0 | 0 |
| ISHARES TR | TIPS BD ETF | 464287176 |  | 715016 | 6430 | SH |  | SOLE |  | 6430 | 0 | 0 |
| ISHARES TR | 3 7 YR TREAS BD | 464288661 |  | 1030654 | 8624 | SH |  | SOLE |  | 8624 | 0 | 0 |
| ISHARES TR | 7-10 YR TRSY BD | 464287440 |  | 1143147 | 11851 | SH |  | SOLE |  | 11851 | 0 | 0 |
| ISHARES TR | MSCI AC ASIA ETF | 464288182 |  | 501710 | 5500 | SH |  | SOLE |  | 5500 | 0 | 0 |
| ISHARES TR | RUS 1000 GRW ETF | 464287614 |  | 5412478 | 11555 | SH |  | SOLE |  | 11555 | 0 | 0 |
| ISHARES TR | SHORT TREAS BD | 464288679 |  | 381191 | 3450 | SH |  | SOLE |  | 3450 | 0 | 0 |
| ISHARES TR | 1 3 YR TREAS BD | 464287457 |  | 803882 | 9690 | SH |  | SOLE |  | 9690 | 0 | 0 |
| ISHARES TR | 0-5YR INVT GR CP | 46434V100 |  | 752284 | 14800 | SH |  | SOLE |  | 14800 | 0 | 0 |
| ISHARES TR | CORE 1 5 YR USD | 46432F859 |  | 205128 | 4200 | SH |  | SOLE |  | 4200 | 0 | 0 |
| ISHARES TR | CORE S ETF | 464287200 |  | 237602 | 355 | SH |  | SOLE |  | 355 | 0 | 0 |
| ISHARES TR | CORE US AGGBD ET | 464287226 |  | 706763 | 7050 | SH |  | SOLE |  | 7050 | 0 | 0 |
| ISHARES TR | IBOXX INV CP ETF | 464287242 |  | 716195 | 6425 | SH |  | SOLE |  | 6425 | 0 | 0 |
| ISHARES TR | JPMORGAN USD EMG | 464288281 |  | 532017 | 5589 | SH |  | SOLE |  | 5589 | 0 | 0 |
| ISHARES TR | RUS 2000 GRW ETF | 464287648 |  | 397810 | 1243 | SH |  | SOLE |  | 1243 | 0 | 0 |
| ISHARES TR | RUS 1000 VAL ETF | 464287598 |  | 2723831 | 13379 | SH |  | SOLE |  | 13379 | 0 | 0 |
| JOHNSON  JOHNSON | COM | 478160104 |  | 559968 | 3020 | SH |  | SOLE |  | 3020 | 0 | 0 |
| JPMORGAN CHASE  CO. | COM | 46625H100 |  | 1135548 | 3600 | SH |  | SOLE |  | 3600 | 0 | 0 |
| MARVELL TECHNOLOGY INC | COM | 573874104 |  | 3194660 | 38000 | SH |  | SOLE |  | 38000 | 0 | 0 |
| MASTERCARD INCORPORATED | CL A | 57636Q104 |  | 634223 | 1115 | SH |  | SOLE |  | 1115 | 0 | 0 |
| MASTERCARD INCORPORATED | CL A | 57636Q104 |  | 353231 | 621 | SH |  | DFND | 1 | 621 | 0 | 0 |
| MERCK  CO INC | COM | 58933Y105 |  | 409578 | 4880 | SH |  | SOLE |  | 4880 | 0 | 0 |
| MICROSOFT CORP | COM | 594918104 |  | 11249874 | 21720 | SH |  | SOLE |  | 21720 | 0 | 0 |
| MICROSOFT CORP | COM | 594918104 |  | 598750 | 1156 | SH |  | DFND | 1 | 1156 | 0 | 0 |
| MSCI INC | COM | 55354G100 |  | 216751 | 382 | SH |  | DFND | 1 | 382 | 0 | 0 |
| NUVEEN QUALITY MUNCP INCOME | COM | 67066V101 |  | 356124 | 30464 | SH |  | SOLE |  | 30464 | 0 | 0 |
| NVIDIA CORPORATION | COM | 67066G104 |  | 114396863 | 613125 | SH |  | SOLE |  | 613125 | 0 | 0 |
| NVIDIA CORPORATION | COM | 67066G104 |  | 280803 | 1505 | SH |  | DFND | 1 | 1505 | 0 | 0 |
| OPORTUN FINL CORP | COM | 68376D104 |  | 2776290 | 449966 | SH |  | SOLE |  | 449966 | 0 | 0 |
| ORACLE CORP | COM | 68389X105 |  | 585542 | 2082 | SH |  | DFND | 1 | 2082 | 0 | 0 |
| PIMCO ETF TR | ENHAN SHRT MA AC | 72201R833 |  | 684692 | 6800 | SH |  | SOLE |  | 6800 | 0 | 0 |
| PROCTER AND GAMBLE CO | COM | 742718109 |  | 479388 | 3120 | SH |  | SOLE |  | 3120 | 0 | 0 |
| QUALCOMM INC | COM | 747525103 |  | 5822600 | 35000 | SH |  | SOLE |  | 35000 | 0 | 0 |
| REALTY INCOME CORP | COM | 756109104 |  | 638295 | 10500 | SH |  | SOLE |  | 10500 | 0 | 0 |
| SALESFORCE INC | COM | 79466L302 |  | 421860 | 1780 | SH |  | SOLE |  | 1780 | 0 | 0 |
| SERVICENOW INC | COM | 81762P102 |  | 235592 | 256 | SH |  | DFND | 1 | 256 | 0 | 0 |
| SPDR GOLD TR | GOLD SHS | 78463V107 |  | 1709455 | 4809 | SH |  | SOLE |  | 4809 | 0 | 0 |
| SPDR S 500 ETF TR | TR UNIT | 78462F103 |  | 1170478 | 1757 | SH |  | SOLE |  | 1757 | 0 | 0 |
| SPDR S MIDCAP 400 ETF TR | UTSER1 S | 78467Y107 |  | 357618 | 600 | SH |  | SOLE |  | 600 | 0 | 0 |
| SPDR SERIES TRUST | BLOOMBERG 1-3 MO | 78468R663 |  | 480862 | 5241 | SH |  | SOLE |  | 5241 | 0 | 0 |
| TAIWAN SEMICONDUCTOR MFG LTD | SPONSORED ADS | 874039100 |  | 951820 | 3408 | SH |  | SOLE |  | 3408 | 0 | 0 |
| THERMO FISHER SCIENTIFIC INC | COM | 883556102 |  | 485020 | 1000 | SH |  | SOLE |  | 1000 | 0 | 0 |
| UBER TECHNOLOGIES INC | COM | 90353T100 |  | 2469530 | 25207 | SH |  | SOLE |  | 25207 | 0 | 0 |
| UNITEDHEALTH GROUP INC | COM | 91324P102 |  | 431625 | 1250 | SH |  | SOLE |  | 1250 | 0 | 0 |
| VALERO ENERGY CORP | COM | 91913Y100 |  | 919404 | 5400 | SH |  | SOLE |  | 5400 | 0 | 0 |
| VANGUARD ADMIRAL FDS INC | 500 GRTH IDX F | 921932505 |  | 403671 | 927 | SH |  | SOLE |  | 927 | 0 | 0 |
| VANGUARD SCOTTSDALE FDS | SHRT TRM CORP BD | 92206C409 |  | 759335 | 9500 | SH |  | SOLE |  | 9500 | 0 | 0 |
| VANGUARD WHITEHALL FDS | EM MK GOV BD ETF | 921946885 |  | 669000 | 10000 | SH |  | SOLE |  | 10000 | 0 | 0 |
| VANGUARD WHITEHALL FDS | HIGH DIV YLD | 921946406 |  | 563800 | 4000 | SH |  | SOLE |  | 4000 | 0 | 0 |
| VANGUARD WORLD FD | INF TECH ETF | 92204A702 |  | 332250 | 445 | SH |  | SOLE |  | 445 | 0 | 0 |
| VISA INC | COM CL A | 92826C839 |  | 328749 | 963 | SH |  | DFND | 1 | 963 | 0 | 0 |
| WALMART INC | COM | 931142103 |  | 1604747 | 15571 | SH |  | SOLE |  | 15571 | 0 | 0 |
| WELLS FARGO CO NEW | COM | 949746101 |  | 572407 | 6829 | SH |  | SOLE |  | 6829 | 0 | 0 |
| WISDOMTREE TR | FLOATNG RAT TREA | 97717Y527 |  | 321728 | 6400 | SH |  | SOLE |  | 6400 | 0 | 0 |
| ZOETIS INC | CL A | 98978V103 |  | 257962 | 1763 | SH |  | DFND | 1 | 1763 | 0 | 0 |

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