Paul Grinberg - 16 Mar 2026 Form 4 Insider Report for Mountain Lake Acquisition Corp. II (MLAAU)

Reporting relationship: CEO, Director, 10%+ Owner
Issuer ticker: MLAAU
Reported as of: 16 Mar 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 18 Mar 2026, 19:39:28 UTC
Prior SEC filing: 30 Jan 2026
Next SEC filing: 10 Apr 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 (MLAAU) on 18 Mar 2026.

Key facts

This page summarizes Paul Grinberg's Form 4 filing for Mountain Lake Acquisition Corp. II (MLAAU).
1 reported transaction and 1 derivative row are listed below.
Accepted by SEC: 18 Mar 2026, 19:39.

Change

Previous filing in this sequence was filed on 30 Jan 2026.
Current net transaction value: $0.

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: CEO, Director, 10%+ Owner
Address: 930 TAHOE BLVD STE 802 PMB 45, INCLINE VILLAGE
Signature: /s/ Paul Grinberg
Signature date: 18 Mar 2026

CIK 0002095442

MOUNTAIN LAKE ACQUISITION SPONSOR II LLC

Relationship: 10%+ Owner
Address: 930 TAHOE BLVD STE 802 PMB 45, INCLINE VILLAGE
Signature: /s/ Paul Grinberg, Managing Member of Mountain Lake Acquisition Sponsor II LLC
Signature date: 18 Mar 2026

CIK 0001844909

Horlick Douglas

Relationship: CFO, Director, 10%+ Owner
Address: 930 TAHOE BLVD STE 802 PMB 45, INCLINE VILLAGE
Signature: /s/ Douglas Horlick
Signature date: 18 Mar 2026

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

MLAAU transaction Derivative

Class B Ordinary Shares

Other

Transaction value
Shares: -6,000
Change %: -0.05%
Price: $0.000000^*
Shares after: 12,000,000
Date: 16 Mar 2026
Ownership: Direct
Underlying class: Class A Ordinary Shares
Underlying amount: 6,000
Exercise price
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

As described in the registration statement on Form S-1 (File No. 333-291833) of Mountain Lake Acquisition Corp. II (the "Issuer") under the heading "Description of Securities - Founder Shares," the Class B ordinary shares will automatically convert into 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. The Class B ordinary shares have no expiration date.

Footnote F2

As contemplated in connection with the initial public offering of the Issuer, 6,000 Class B ordinary shares of the Issuer held by Mountain Lake Acquisition Sponsor II LLC (the "Sponsor") were returned to the Issuer for no consideration and cancelled because the underwriters' over-allotment option was not exercised in full.

Footnote F3

Paul Grinberg and Douglas Horlick are the managing members of the Sponsor and hold voting and investment discretion with respect to the Class B ordinary shares held of record by the Sponsor. As such, Messrs. Grinberg and Horlick may be deemed to have beneficial ownership of the securities held of record by the Sponsor. Messrs. Grinberg and Horlick disclaim any beneficial ownership except to the extent of their pecuniary interest therein.