Form 8-K

8-K — Avalanche Treasury Corp

Accession: 0001104659-26-080728

Filed: 2026-07-06

Period: 2026-07-01

CIK: 0002092446

SIC: 6199 (FINANCE SERVICES)

Item: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Item: Financial Statements and Exhibits

Documents

8-K — tm2619678d1_8k.htm (Primary)

EX-17.1 — EXHIBIT 17.1 (tm2619678d1_ex17-1.htm)

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UNITED

STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

REPORT PURSUANT

SECTION 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported):

July 6, 2026 (July 1, 2026)

Avalanche Treasury Corporation

(EXACT NAME OF REGISTRANT

AS SPECIFIED IN ITS CHARTER)

Delaware

001-43345

39-4863126

(State or other jurisdiction

of incorporation)

(Commission

File Number)

(I.R.S. Employer

Identification No.)

11 W. 42nd Street 2nd Floor

New York, NY

10036

(Address of principal executive offices)

(Zip Code)

(332) 240-1155

(Registrant’s telephone number, including area code)

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K

filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of

the Act:

Title of each class

Trading

Symbol(s)

Name of each exchange on which

registered

Class A common stock, par value $0.01 per share

AVAT

The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant

is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2

of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging

growth company x

an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying

with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Item 5.02 Departure of Directors or Certain

Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On July 1, 2026, Sarkees John Nahas, a member

of the Company’s Board of Directors, resigned as a director of the Company. The effective date of Mr. Nahas’ resignation was

July 1, 2026. The Company has not been informed that this resignation was the result of any disagreement with the Company on any matter

relating to the Company’s operations, policies or practices.

A copy of Mr. Nahas’ letter relating

to his resignation from the Board is filed as Exhibit 17.1 to this Current Report on Form 8-K.

Item 9.01 Financial Statements and Exhibits

(d) Exhibits.

Exhibit

No.

Description

17.1

Resignation

Letter of Sarkees John Nahas dated July 1, 2026.

104

Cover

Page Interactive Data File (embedded within the Inline XBRL document).

SIGNATURES

Pursuant to the requirements of the Securities

Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

Dated: July 6, 2026

AVALANCHE

TREASURY CORPORATION

By:

/s/ Gerald Bartholomew Smith

Name:

Gerald Bartholomew Smith

Title:

Chief Executive Officer

EX-17.1 — EXHIBIT 17.1

EX-17.1

Filename: tm2619678d1_ex17-1.htm · Sequence: 2

Exhibit 17.1

To: [Avalanche Treasury Corporation

/ Mountain Lake Acquisition Corp./ Avalanche Treasury Company LLC] (the “Corporation”)

11 W. 42nd Street,

2nd Floor

New York, New York 10036

USA

July 1,

2026

Dear Sirs and Madams,

The

undersigned, being a director of the Corporation, hereby resign from my position as a member of the Board of Directors of the Corporation

and any committees thereof, immediately effective from the receipt of this letter.

This

letter of resignation is not a waiver of any right to indemnification under the organizational documents of any member of the Corporation,

any indemnification agreement with the Corporation or any insurance policy of the Corporation, in each case, for events, acts or omissions

occurring on or prior to the effective date of my resignation as specified above that I may have as a result of my service as a director

or otherwise.

hereby declare to have no claim or right of action of any kind against the Corporation or any other company of the Corporation’s

group (the “Group”) or any officers or employees of Corporation or any other Group’s company whether for compensation

for loss of office or for unfair or wrongful dismissal or redundancy. I declare that there is no outstanding agreement, arrangement or

claim under which the Corporation or any other Group’s company has or could have any obligations to me. To the extent that any

such claim or right of action exists or may exist, I hereby irrevocably waive such claim, release and forever discharge the Corporation

or any other Group’s company, as well as the shareholders, officers and employees of the Corporation’s or any other Group’s

company from any liability whatsoever in respect thereof.

[Signature

page follows]

Yours faithfully,

/s/ Sarkees John

Nahas

Sarkees John Nahas

[Signature page to Resignation Letter]

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