# EDGAR Filing Document

**Accession Number:** 0001565146
**File Stem:** 0002137750-26-000002
**Filing Date:** 2026-6
**Character Count:** 8204
**Document Hash:** 85c7aa0da33daf746cc178ca26458abb
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0002137750-26-000002.hdr.sgml**: 20260602

**ACCESSION NUMBER**: 0002137750-26-000002

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13G

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260602

**DATE AS OF CHANGE**: 20260602

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Gulf Coast Ultra Deep Royalty Trust
- **CENTRAL INDEX KEY:** 0001565146
- **STANDARD INDUSTRIAL CLASSIFICATION:** CRUDE PETROLEUM & NATURAL GAS [1311]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 000000000

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-87492
- **FILM NUMBER:** 261058447

**BUSINESS ADDRESS:**
- **STREET 1:** 601 TRAVIS STREET
- **STREET 2:** 16TH FLOOR
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77002
- **BUSINESS PHONE:** 512-236-6599

**MAIL ADDRESS:**
- **STREET 1:** 601 TRAVIS STREET
- **STREET 2:** 16TH FLOOR
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77002
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Galluccio Thomas Gregory
- **CENTRAL INDEX KEY:** 0002137750

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G

**MAIL ADDRESS:**
- **STREET 1:** 402 MONTPELIER DR.
- **CITY:** SOUTHLAKE
- **STATE:** TX
- **ZIP:** 76092

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## SCHEDULE 13G

### Under the Securities Exchange Act of 1934

**Issuer:** Gulf Coast Ultra Deep Royalty Trust

**Title of Class of Securities:** Royalty Trust Units

**CUSIP Number:** —

**Date of Event Which Requires Filing of this Statement:** 05/28/2026

**Check the appropriate box to designate the rule pursuant to which this Schedule is filed:**

- [ ] Rule 13d-1(b)

- [x] Rule 13d-1(c)

- [ ] Rule 13d-1(d)

---

| 1. | Names of Reporting Persons<br>Galluccio Thomas Gregory | Names of Reporting Persons<br>Galluccio Thomas Gregory |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>X1 | Citizenship or Place of Organization<br>X1 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>10397661.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>2533230.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>10397661.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>2533230.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>12930891.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>12930891.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>5.6% | Percent of Class Represented by Amount in Row (9)<br>5.6% |
| 12. | Type of Reporting Person (See Instructions)<br>IN | Type of Reporting Person (See Instructions)<br>IN |

---

**Item 1(a). Name of Issuer:**
Gulf Coast Ultra Deep Royalty Trust

**Item 1(b). Address of Issuer's Principal Executive Offices:**
601 TRAVIS STREET, 16TH FLOOR, HOUSTON, TEXAS, 77002.

**Item 2(a). Name of Person Filing:**
Thomas Gregory Galluccio

**Item 2(b). Address of Principal Business Office:**
402 Montpelier Drive
Southlake, Texas 76092

**Item 2(c). Citizenship:**
United States

**Item 2(d). Title of Class of Securities:**
Royalty Trust Units

**Item 2(e). CUSIP Number:**
—

**Item 3. If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:**

(a) [ ] Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).

(b) [ ] Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).

(c) [ ] Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).

(d) [ ] Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).

(e) [ ] An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);

(f) [ ] An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);

(g) [ ] A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);

(h) [ ] A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i) [ ] A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j) [ ] A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), if filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:

(k) [ ] Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).

**Item 4. Ownership:**

**(a) Amount beneficially owned:**

12,930,891 Royalty Trust Units

**(b) Percent of class:**

5.6% (calculated based on 230,172,696 Royalty Trust Units outstanding as reported in the Issuer's Form 10-Q for the quarter ended March 31, 2026)

**(c) Number of shares as to which the person has:**

**(i) Sole power to vote or to direct the vote:**

10,397,661

**(ii) Shared power to vote or to direct the vote:**

2,533,230

**(iii) Sole power to dispose or to direct the disposition of:**

10,397,661

**(iv) Shared power to dispose or to direct the disposition of:**

2,533,230

**Item 5. Ownership of Five Percent or Less of a Class.**

[x] If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following.

**Item 6. Ownership of More than 5 Percent on Behalf of Another Person.**

The Royalty Trust Units reported in this Schedule include 2,533,230 Units held by the Teresa Galluccio 2013 Family Trust (the "Trust"). The Reporting Person serves as co-trustee of the Trust together with Nicola F. Galluccio and accordingly shares voting and dispositive power over the Trust's Units. The beneficiaries of the Trust are entitled to the economic interest in the Units held by the Trust in accordance with the terms of the Trust instrument. The Reporting Person is one of three beneficiaries of the Trust. The Reporting Person disclaims beneficial ownership of the Royalty Trust Units held by the Trust pursuant to Rule 13d-4 under the Securities Exchange Act of 1934, except to the extent of his pecuniary interest therein, if any. The inclusion of the Trust's Royalty Trust Units in this Schedule shall not be deemed an admission that the Reporting Person is the beneficial owner of such Royalty Trust Units for purposes of Section 13(d) of the Securities Exchange Act of 1934 or for any other purpose.

**Item 7. Identification and Classification of the Subsidiary**

Not Applicable

**Item 8. Identification and Classification of Members of the Group**

Not Applicable

**Item 9. Notice of Dissolution of Group**

Not Applicable

**Item 10. Certification:**

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Galluccio Thomas Gregory**

**Date:** 06/02/2026

**By:** Thomas Gregory Galluccio

**Name & Title:** Individual