Paul Grinberg - 28 Jan 2026 Form 4 Insider Report for Mountain Lake Acquisition Corp. II (MLAA)

Reporting relationship: Chief Executive Officer, 10%+ Owner
Issuer ticker: MLAA
Reported as of: 28 Jan 2026
Net transaction value: +$5,100,000
SEC form: 4
Accepted by SEC: 30 Jan 2026, 18:30:35 UTC
Prior SEC filing: 18 Nov 2025
Next SEC filing: 18 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ Paul Grinberg

Key filing fact

Paul Grinberg filed Form 4 for Mountain Lake Acquisition Corp. II (MLAA) on 30 Jan 2026.

Key facts

This page summarizes Paul Grinberg's Form 4 filing for Mountain Lake Acquisition Corp. II (MLAA).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 30 Jan 2026, 18:30.

Change

Previous filing in this sequence was filed on 18 Nov 2025.
Current net transaction value: +$5,100,000.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (3)

CIK 0001303829 Primary reporting owner

Grinberg Paul

Relationship: Chief Executive Officer, 10%+ Owner
Address: 930 TAHOE BLVD STE 802 PMB 45, INCLINE VILLAGE
Signature: /s/ Paul Grinberg
Signature date: 30 Jan 2026

CIK 0002095442

MOUNTAIN LAKE ACQUISITION SPONSOR II LLC

Relationship: 10%+ Owner
Address: 930 TAHOE BLVD STE 802 PMB 45, INCLINE VILLAGE
Signature: /s/ Mountain Lake Acquisition Sponsor II LLC
Signature date: 30 Jan 2026

CIK 0001844909

Horlick Douglas

Relationship: Chief Financial Officer, Director, 10%+ Owner
Address: C/O MOUNTAIN LAKE ACQUISITION CORP. II, 930 TAHOE BLVD STE 802 PMB 45, INCLINE VILLAGE
Signature: /s/ Douglas Horlick
Signature date: 30 Jan 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

MLAA transaction

Class A Ordinary Shares

Purchase

Transaction value: $5,100,000
Shares: +510,000
Change %
Price: $10.00
Shares after: 510,000
Date: 28 Jan 2026
Ownership: Through Mountain Lake Acquisition Sponsor II LLC
Footnotes: F1, F2, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

Reflects the 510,000 Class A ordinary shares of Mountain Lake Acquisition Corp. II (the "Issuer") that are included in the 510,000 private placement units of the Issuer purchased by Mountain Lake Acquisition Sponsor II LLC ("Sponsor"). Each private placement unit was purchased for $10 per unit and consists of one Class A ordinary share and one-half of a warrant, each whole warrant exercisable into one Class A ordinary share at an exercise price of $11.50 per ordinary share.

Footnote F2

The Sponsor is the record holder of the shares reported herein. Paul Grinberg and Douglas Horlick, as the managing members of Mountain Lake Acquisition Sponsor II LLC share voting and investment discretion with respect to the ordinary shares held of record by the sponsor. Each such person disclaims any beneficial ownership of the reported shares other than to the extent of any pecuniary interest they may have therein, directly or indirectly. Paul Grinberg and Douglas Horlick disclaim any beneficial ownership of the securities held by Mountain Lake Acquisition Sponsor II LLC other than to the extent of any pecuniary interest they may have therein, directly or indirectly.

Footnote F3

Excludes 12,006,000 Class B ordinary shares of the Issuer held by the Sponsor acquired pursuant to a subscription agreement by and between the Issuer and the Sponsor, of which [6,000] are subject to forfeiture to the extent the underwriter in the Issuer's public offering does not exercise the remainder of its over-allotment option.