# EDGAR Filing Document

**Accession Number:** 0002047890
**File Stem:** 0001213900-26-067332
**Filing Date:** 2026-6
**Character Count:** 7395
**Document Hash:** 37750864f6f0f00f8034e733f84a84a3
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001213900-26-067332.hdr.sgml**: 20260610

**ACCESSION NUMBER**: 0001213900-26-067332

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260601

**FILED AS OF DATE**: 20260610

**DATE AS OF CHANGE**: 20260610

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Mountain Lake Acquisition Sponsor LLC
- **CENTRAL INDEX KEY:** 0002047890

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42436
- **FILM NUMBER:** 261079852

**BUSINESS ADDRESS:**
- **STREET 1:** 930 TAHOE BLVD STE 802 PMB 45
- **CITY:** INCLINE VILLAGE
- **STATE:** NV
- **ZIP:** 89451
- **BUSINESS PHONE:** 775-204-1489

**MAIL ADDRESS:**
- **STREET 1:** 930 TAHOE BLVD STE 802 PMB 45
- **CITY:** INCLINE VILLAGE
- **STATE:** NV
- **ZIP:** 89451
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Mountain Lake Acquisition Corp.
- **CENTRAL INDEX KEY:** 0002029492
- **STANDARD INDUSTRIAL CLASSIFICATION:** BLANK CHECKS [6770]
- **ORGANIZATION NAME:** 05 Real Estate & Construction
- **EIN:** 981796213
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 930 TAHOE BLVD
- **STREET 2:** STE 802 PMB 45
- **CITY:** INCLINE VILLAGE
- **STATE:** NV
- **ZIP:** 89451
- **BUSINESS PHONE:** (775) 204-1489

**MAIL ADDRESS:**
- **STREET 1:** 930 TAHOE BLVD
- **STREET 2:** STE 802 PMB 45
- **CITY:** INCLINE VILLAGE
- **STATE:** NV
- **ZIP:** 89451

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

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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

[ ] Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Mountain Lake Acquisition Sponsor LLC<br><sub>(Last) (First) (Middle)</sub><br>C/O MOUNTAIN LAKE ACQUISITION CORP.<br>930 TAHOE BLVD STE 802 PMB 45<br><sub>(Street)</sub><br>INCLINE VILLAGE, NV 89451<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-06-01 | **5. 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>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Mountain Lake Acquisition Corp. [ MLAC ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |  |  |  |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Class B ordinary shares, par value $0.0001 per share | <sup>(1)(2)</sup> | 2026-06-01 |  | J<sup>(3)</sup> |  |  | 2781776 | <sup>(2)</sup> | <sup>(2)</sup> | Class A ordinary shares | 2781776 | <sup>(2)</sup> | 4355724 | D |  |

---

### Footnotes:

(1) Following the transactions reported herein, Mountain Lake Acquisition Sponsor LLC (the "Sponsor") is the record holder of 4,355,724 Class B Ordinary Shares of the Issuer (the "Founder Shares"). Each of Paul Grinberg, Douglas Horlick and Jaime W. Vieser are members of the Sponsor. Messrs. Grinberg and Horlick are managing members of the Sponsor and hold voting and investment discretion with respect to the Founder Shares. As such, Mr. Grinberg, Mr. Horlick and Mr. Vieser may be deemed to have beneficial ownership of the Founder Shares held of record by the Sponsor. Mr. Grinberg, Mr. Horlick and Mr. Vieser disclaim any beneficial ownership except to the extent of their pecuniary interest therein.

(2) As described in the registration statement on Form S-1 (File No. 333-281410) of the Issuer under the heading "Description of Securities--Founder Shares," the shares of Class B Ordinary Shares will automatically convert into shares of Class A ordinary shares at the time of the Issuer's initial business combination, or at any time prior to the Issuer's initial business combination, at the option of the holder, on a one-for-one basis, subject to certain adjustments.

(3) Represents pro rata distribution of an aggregate of 2,781,776 Class B Ordinary Shares by the Sponsor to its constituent members (the "Sponsor Distribution"). No consideration was paid in connection with the transaction reported herein..

**Signature:** Signed by Managing Member of Mountain Lake Acquisition Sponsor LLC /s/ Douglas Horlick  
**Date:** 2026-06-10

### 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.**