# EDGAR Filing Document

**Accession Number:** 0002029118
**File Stem:** 0001193125-26-114891
**Filing Date:** 2026-3
**Character Count:** 8986
**Document Hash:** 0f7b75d497248f7d9cc058ac8e4e6584
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-114891.hdr.sgml**: 20260318

**ACCESSION NUMBER**: 0001193125-26-114891

**CONFORMED SUBMISSION TYPE**: 3

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260223

**FILED AS OF DATE**: 20260318

**DATE AS OF CHANGE**: 20260318

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** VANLOH S WIL JR
- **CENTRAL INDEX KEY:** 0001098463

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42499
- **FILM NUMBER:** 26772190

**MAIL ADDRESS:**
- **STREET 1:** 1401 MCKINNEY STREET, SUITE 2700
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77010
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Quantum Capital Solutions II GP, LLC
- **CENTRAL INDEX KEY:** 0002121535

**ORGANIZATION NAME:**
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42499
- **FILM NUMBER:** 26772191

**BUSINESS ADDRESS:**
- **STREET 1:** 800 CAPITOL STREET, SUITE 3600
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77002
- **BUSINESS PHONE:** 713-452-2000

**MAIL ADDRESS:**
- **STREET 1:** 800 CAPITOL STREET, SUITE 3600
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77002
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** INR (II) Investments, LLC
- **CENTRAL INDEX KEY:** 0002117800

**ORGANIZATION NAME:**
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42499
- **FILM NUMBER:** 26772192

**BUSINESS ADDRESS:**
- **STREET 1:** 800 CAPITOL STREET, SUITE 3600
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77002
- **BUSINESS PHONE:** 713-452-2000

**MAIL ADDRESS:**
- **STREET 1:** 800 CAPITOL STREET, SUITE 3600
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77002
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** INFINITY NATURAL RESOURCES, INC.
- **CENTRAL INDEX KEY:** 0002029118
- **STANDARD INDUSTRIAL CLASSIFICATION:** CRUDE PETROLEUM & NATURAL GAS [1311]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 2605 CRANBERRY SQUARE
- **CITY:** MORGANTOWN
- **STATE:** WV
- **ZIP:** 26508
- **BUSINESS PHONE:** 304-212-2350

**MAIL ADDRESS:**
- **STREET 1:** 2605 CRANBERRY SQUARE
- **CITY:** MORGANTOWN
- **STATE:** WV
- **ZIP:** 26508

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

## FORM 3

### INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>INR (II) Investments, LLC<br><sub>(Last) (First) (Middle)</sub><br>800 CAPITOL STREET, SUITE 3600<br><sub>(Street)</sub><br>HOUSTON, TX 77002<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>INFINITY NATURAL RESOURCES, INC. [ INR ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2026-02-23 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director   [X] 10% Owner<br>[ ] Officer (give title below)   [ ] Other (specify below)<br>_ _ | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Quantum Capital Solutions II GP, LLC<br><sub>(Last) (First) (Middle)</sub><br>800 CAPITOL STREET, SUITE 3600<br><sub>(Street)</sub><br>HOUSTON, TX 77002<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>INFINITY NATURAL RESOURCES, INC. [ INR ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2026-02-23 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director   [X] 10% Owner<br>[ ] Officer (give title below)   [ ] Other (specify below)<br>_ _ | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>VANLOH S WIL JR<br><sub>(Last) (First) (Middle)</sub><br>800 CAPITOL STREET, SUITE 3600<br><sub>(Street)</sub><br>HOUSTON, TX 77002<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>INFINITY NATURAL RESOURCES, INC. [ INR ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2026-02-23 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director   [X] 10% Owner<br>[ ] Officer (give title below)   [ ] Other (specify below)<br>_ _ | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities Beneficially Owned

---

|  |  |  |  |
| --- | --- | --- | --- |
| 1. Title of Security | 2. Amount of Securities Beneficially Owned | 3. Ownership Form | 4. Nature of Indirect Beneficial Ownership |
| Class A Common Stock | 12856475 | I | See footnote<sup>(1)(2)(3)</sup> |

---

## Table II - Derivative Securities Beneficially Owned

---

|  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 3. Title and Amount of Underlying Securities | 3. Title and Amount of Underlying Securities | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| Series A Convertible Preferred Stock | <sup>(1)(2)(3)</sup> | <sup>(1)(2)(3)</sup> | Class A Common Stock | 275000 | $21.39 | D<sup>(1)(2)(3)</sup> |  |

---

### Footnotes:

(1) On February 23, 2026, INR (II) Investments, LLC completed its acquisition of 275,000 shares of Series A Convertible Preferred Stock of the Issuer. Shares of the Series A Preferred Stock are convertible into shares of Class A Common Stock of the Issuer at a conversion price equal to $21.39 per share subject to certain customary adjustments.

(2) As of the date of this Form 3, INR (II) Investments, LLC directly holds the 275,000 shares of Series A Convertible Preferred Stock reported hereby. Quantum Capital Solutions II GP, LLC ("QCS II GP") is the manager of INR (II) Investments, LLC and therefore may be deemed to share voting and dispositive power over the securities held by INR (II) Investments, LLC and may also be deemed to be the beneficial owner of such securities. Any decision taken by QCS II GP to vote, or to direct to vote, and to dispose, or to direct the disposition of, the securities held by INR (II) Investments, LLC must be approved by a majority of the members of QCS II GP's investment committee and such majority must include S. Wil VanLoh, Jr. Therefore, Mr. VanLoh may be deemed to share voting and dispositive power over the securities held by QCS II GP and may also be deemed to be the beneficial owner of such securities.

(3) (Continued from footnote 2) Each of QCS II GP and Mr. VanLoh disclaim beneficial ownership of the securities reported herein in excess of their respective pecuniary interests in such securities.

**Signature:** /s/ Rob Anderson, Authorized Person of INR (II) Investments, LLC  
**Date:** 2026-03-18

**Signature:** /s/ Roman Bejger, Authorized Person of Quantum Capital Solutions II GP, LLC  
**Date:** 2026-03-18

**Signature:** /s/ S. Wil VanLoh, Jr.  
**Date:** 2026-03-18

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**