Paul Grinberg - 27 Aug 2026 Form 4 Insider Report for Avalanche Treasury Corp (AVAT)

Reporting relationship: Director
Issuer ticker: AVAT
Reported as of: 27 Aug 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 31 Aug 2026, 16:15:13 UTC
Prior SEC filing: 15 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Laine Mihalchick Moljo, as Attorney-in-Fact

Key filing fact

Paul Grinberg filed Form 4 for Avalanche Treasury Corp (AVAT) on 31 Aug 2026.

Key facts

This page summarizes Paul Grinberg's Form 4 filing for Avalanche Treasury Corp (AVAT).
2 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 31 Aug 2026, 16:15.

Change

Previous filing in this sequence was filed on 15 Jun 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 (1)

CIK 0001303829 Primary reporting owner

Grinberg Paul

Relationship: Director
Address: AVALANCHE TREASURY COMPANY, LLC, 11 W. 42ND STREET, 2ND FLOOR, NEW YORK
Signature: /s/ Laine Mihalchick Moljo, as Attorney-in-Fact
Signature date: 31 Aug 2026

Reported derivative securities

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

AVAT transaction Derivative

Stock Option (Right to Buy)

Award

Transaction value
Shares: +66,363
Change %: +14%
Price: $0.000000^*
Shares after: 544,373
Date: 27 Aug 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 66,363
Exercise price: $0.6300
Footnotes: F1

AVAT transaction Derivative

Stock Option (Right to Buy)

Award

Transaction value
Shares: +26,908
Change %: +4.9%
Price: $0.000000^*
Shares after: 571,281
Date: 27 Aug 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 26,908
Exercise price: $0.6300
Footnotes: F2

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Represents the initial award of stock options for his service as director. The initial option awards vest in three equal installments during each of the first three 12-month periods following the Grant Date on the earlier to occur during each such 12-month period of (i) the anniversary of the Grant Date and (ii) the annual meeting of the Company's stockholders, subject to the director's continued service with the Company or an affiliate through the vesting date.

Footnote F2

Represents the annual award of stock options for his service as director. The annual option awards vest in full on the earlier to occur of (i) the first anniversary of the Grant Date and (ii) the first annual meeting of the Company's stockholders to occur following the Grant Date, subject to the director's continued service with the Company or an affiliate through the vesting date.