SEC Form 4 reporting owner

Grinberg Paul

Grinberg Paul has filed 6 Form 4 transactions reported between January 28, 2026 and August 27, 2026, as Director of Avalanche Treasury Corp, Chief Executive Officer of Mountain Lake Acquisition Corp. and CEO, Chief Executive Officer of Mountain Lake Acquisition Corp. II.

Name as filed: Grinberg Paul

Open-market buys, 24 mo

$5.1M

1 lines

Open-market sales, 24 mo

None

reported

Companies

with Form 4 filings

Latest transaction

Aug 27, 2026

transaction date

Roles and reported holdings

AVATAvalanche Treasury Corp
Aug 27, 2026
Director
No common-stock holding reported on a purchase, sale, gift or withholding line.
MLACMountain Lake Acquisition Corp.
Jun 1, 2026 – Jun 11, 2026
Chief Executive Officer
No common-stock holding reported on a purchase, sale, gift or withholding line.
MLAAMountain Lake Acquisition Corp. II
Jan 28, 2026 – Mar 16, 2026
CEO, Chief Executive Officer
Held indirectly (latest line)510,000 sh as of Jan 28, 2026 · Form 4
24 months: $5.1M bought

Transaction history

All 6 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

Date	Company	Type	Shares	Price	Value	Owned after	Filing
Aug 27, 2026	AVATDirector	Grant or awardCode A · direct	26,908	—	—	571,281	Form 4
Aug 27, 2026	AVATDirector	Grant or awardCode A · direct	66,363	—	—	544,373	Form 4
Jun 11, 2026	MLACChief Executive Officer	Disposition to issuerCode D · direct	478,010	—	—	0	Form 4
Jun 1, 2026	MLACChief Executive Officer	Other acquisition or dispositionCode J · direct	478,010	—	—	478,010	Form 4
Mar 16, 2026	MLAACEO	Other acquisition or dispositionCode J · direct	6,000	—	—	12,000,000	Form 4
Jan 28, 2026	MLAAChief Executive Officer	Open-market purchaseCode P · indirect	510,000	$10.00	$5.1M@ $10.00	510,000	Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.