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Mountain Lake Acquisition Sponsor LLC, a 10% owner of Mountain Lake Acquisition Corp., reported disposing of all its holdings in connection with consummation of the Business Combination Agreement dated October 1, 2025 (as later amended). On June 11, 2026, the sponsor surrendered its interests to the issuer for cancellation at no cost.
The sponsor returned 495,000 private placement units and 4,355,724 Class B ordinary shares, which were convertible into Class A ordinary shares on a one-for-one basis, to the company for no consideration. Following these cancellations, the sponsor holds zero ordinary shares of the issuer.
Mountain Lake Acquisition Sponsor LLC, a 10% owner of Mountain Lake Acquisition Corp., reported disposing of all its holdings in connection with consummation of the Business Combination Agreement dated October 1, 2025 (as later amended). On June 11, 2026, the sponsor surrendered its interests to the issuer for cancellation at no cost.
The sponsor returned 495,000 private placement units and 4,355,724 Class B ordinary shares, which were convertible into Class A ordinary shares on a one-for-one basis, to the company for no consideration. Following these cancellations, the sponsor holds zero ordinary shares of the issuer.
Mountain Lake Acquisition Corp. director and CEO Paul Grinberg reported a restructuring of his stake tied to the company’s business combination. On June 11, 2026, he converted 478,010 Class B ordinary shares into 478,010 Class A ordinary shares and then exchanged 478,010 Class A ordinary shares into an equal number of Class A common shares of Avalanche Treasury Corporation (Pubco) in connection with the SPAC Merger under the Business Combination Agreement. Following these transactions, he holds zero Class A and zero Class B ordinary shares of Mountain Lake Acquisition Corp., with his economic interest shifted to Pubco shares.
Mountain Lake Acquisition Corp. director and CEO Paul Grinberg reported a restructuring of his stake tied to the company’s business combination. On June 11, 2026, he converted 478,010 Class B ordinary shares into 478,010 Class A ordinary shares and then exchanged 478,010 Class A ordinary shares into an equal number of Class A common shares of Avalanche Treasury Corporation (Pubco) in connection with the SPAC Merger under the Business Combination Agreement. Following these transactions, he holds zero Class A and zero Class B ordinary shares of Mountain Lake Acquisition Corp., with his economic interest shifted to Pubco shares.
Mountain Lake Acquisition Corp. director Michael J. Marquez reported merger-related share restructurings and cancellations tied to the company’s business combination. On June 11, 2026, he surrendered 15,888 Class B ordinary shares to the company for no consideration in connection with the Business Combination Agreement and related sponsor support arrangements.
Immediately after that surrender, 9,112 remaining Class B ordinary shares automatically converted one-for-one into 9,112 Class A ordinary shares. In the SPAC Merger step of the transaction, those 9,112 Class A ordinary shares were exchanged into 9,112 shares of Class A common stock of Avalanche Treasury Corporation (Pubco). Following these steps, Marquez held zero Class A and zero Class B ordinary shares of Mountain Lake Acquisition Corp., with his equity exposure moved to Pubco instead.
Mountain Lake Acquisition Corp. director Michael J. Marquez reported merger-related share restructurings and cancellations tied to the company’s business combination. On June 11, 2026, he surrendered 15,888 Class B ordinary shares to the company for no consideration in connection with the Business Combination Agreement and related sponsor support arrangements.
Immediately after that surrender, 9,112 remaining Class B ordinary shares automatically converted one-for-one into 9,112 Class A ordinary shares. In the SPAC Merger step of the transaction, those 9,112 Class A ordinary shares were exchanged into 9,112 shares of Class A common stock of Avalanche Treasury Corporation (Pubco). Following these steps, Marquez held zero Class A and zero Class B ordinary shares of Mountain Lake Acquisition Corp., with his equity exposure moved to Pubco instead.
Mountain Lake Acquisition Corp. director Jeffrey Todd Lager reported several share restructurings tied to the closing of a Business Combination on June 11, 2026. He surrendered 15,888 Class B ordinary shares to the company for no consideration and converted 9,112 Class B shares into 9,112 Class A shares.
Immediately afterward, 9,112 Class A ordinary shares were exchanged into 9,112 shares of Class A common stock of Avalanche Treasury Corporation (Pubco) in the SPAC Merger. Following these steps, Lager holds zero Class A and Class B ordinary shares of Mountain Lake Acquisition Corp. and instead holds Class A common stock of Pubco.
Mountain Lake Acquisition Corp. director Jeffrey Todd Lager reported several share restructurings tied to the closing of a Business Combination on June 11, 2026. He surrendered 15,888 Class B ordinary shares to the company for no consideration and converted 9,112 Class B shares into 9,112 Class A shares.
Immediately afterward, 9,112 Class A ordinary shares were exchanged into 9,112 shares of Class A common stock of Avalanche Treasury Corporation (Pubco) in the SPAC Merger. Following these steps, Lager holds zero Class A and Class B ordinary shares of Mountain Lake Acquisition Corp. and instead holds Class A common stock of Pubco.
Mountain Lake Acquisition Corp. director Jaime Vieser restructured 478,010 shares in connection with the company’s business combination. On June 11, 2026, 478,010 Class B ordinary shares were converted into 478,010 Class A ordinary shares as part of the Class B Conversion under the Business Combination Agreement.
On the same date, in connection with the SPAC Merger, 478,010 Class A ordinary shares held by the reporting person were exchanged into an equal number of Class A common shares of Pubco. Following these transactions, the reporting person holds zero Class A and zero Class B ordinary shares of Mountain Lake Acquisition Corp.
Mountain Lake Acquisition Corp. director Jaime Vieser restructured 478,010 shares in connection with the company’s business combination. On June 11, 2026, 478,010 Class B ordinary shares were converted into 478,010 Class A ordinary shares as part of the Class B Conversion under the Business Combination Agreement.
On the same date, in connection with the SPAC Merger, 478,010 Class A ordinary shares held by the reporting person were exchanged into an equal number of Class A common shares of Pubco. Following these transactions, the reporting person holds zero Class A and zero Class B ordinary shares of Mountain Lake Acquisition Corp.
Mountain Lake Acquisition Corp. director and CFO/President Douglas Horlick reported share movements tied to the company’s business combination. He exercised 478,010 Class B ordinary shares into 478,010 Class A ordinary shares, then disposed of 478,010 Class A ordinary shares in connection with a SPAC merger and exchange into Pubco shares. Following these steps, he holds zero Class A and zero Class B ordinary shares of Mountain Lake Acquisition Corp., while receiving 478,010 Class A common shares of Pubco.
Mountain Lake Acquisition Corp. director and CFO/President Douglas Horlick reported share movements tied to the company’s business combination. He exercised 478,010 Class B ordinary shares into 478,010 Class A ordinary shares, then disposed of 478,010 Class A ordinary shares in connection with a SPAC merger and exchange into Pubco shares. Following these steps, he holds zero Class A and zero Class B ordinary shares of Mountain Lake Acquisition Corp., while receiving 478,010 Class A common shares of Pubco.
Mountain Lake Acquisition Corp. completed its previously announced business combination with Avalanche Treasury Corporation, creating a combined company named AVAT. This transaction converts Mountain Lake from a blank-check SPAC into an operating company focused on the Avalanche blockchain ecosystem.
The shares of AVAT’s Class A common stock begin trading on Nasdaq on June 11, 2026 under the ticker symbol AVAT. Mountain Lake shareholders approved the deal at an extraordinary general meeting on June 4, 2026, and all remaining closing conditions were satisfied or waived by June 11, 2026.
Mountain Lake Acquisition Corp. completed its previously announced business combination with Avalanche Treasury Corporation, creating a combined company named AVAT. This transaction converts Mountain Lake from a blank-check SPAC into an operating company focused on the Avalanche blockchain ecosystem.
The shares of AVAT’s Class A common stock begin trading on Nasdaq on June 11, 2026 under the ticker symbol AVAT. Mountain Lake shareholders approved the deal at an extraordinary general meeting on June 4, 2026, and all remaining closing conditions were satisfied or waived by June 11, 2026.
Nasdaq Stock Market LLC submitted a Form 25 to remove the listing and registration of Mountain Lake Acquisition Corp. securities — described as class A ordinary shares; rights; units — under Section 12(b) of the Exchange Act, citing compliance with 17 CFR 240.12d2-2. The notice is certified and signed on behalf of Nasdaq by Tara Petta, AVP.
Nasdaq Stock Market LLC submitted a Form 25 to remove the listing and registration of Mountain Lake Acquisition Corp. securities — described as class A ordinary shares; rights; units — under Section 12(b) of the Exchange Act, citing compliance with 17 CFR 240.12d2-2. The notice is certified and signed on behalf of Nasdaq by Tara Petta, AVP.
Mountain Lake Acquisition Sponsor LLC, a major shareholder of Mountain Lake Acquisition Corp., reported an internal restructuring of its founder shares. The Sponsor made a pro rata distribution of 2,781,776 Class B ordinary shares to its members, with no consideration paid.
Following this distribution, the Sponsor remains the record holder of 4,355,724 Class B ordinary shares, described as Founder Shares. These Class B shares will automatically convert into Class A ordinary shares at the time of the company’s initial business combination, or earlier at the holder’s option, on a one-for-one basis, subject to adjustments.
Mountain Lake Acquisition Sponsor LLC, a major shareholder of Mountain Lake Acquisition Corp., reported an internal restructuring of its founder shares. The Sponsor made a pro rata distribution of 2,781,776 Class B ordinary shares to its members, with no consideration paid.
Following this distribution, the Sponsor remains the record holder of 4,355,724 Class B ordinary shares, described as Founder Shares. These Class B shares will automatically convert into Class A ordinary shares at the time of the company’s initial business combination, or earlier at the holder’s option, on a one-for-one basis, subject to adjustments.
Mountain Lake Acquisition Corp. is postponing its extraordinary general meeting of shareholders to June 16, 2026 at 10:00 a.m. Eastern time. At this Special Meeting, shareholders will vote on extending the deadline to complete an initial business combination from June 16, 2026 to September 16, 2026, referred to as the Articles Extension.
The meeting will still be held at Ellenoff Grossman & Schole LLP’s New York office with no change to the location, record date, redemption deadline, purpose, or proposals. Shareholders previously approved the proposed business combination with Avalanche Treasury Corporation on June 4, 2026, and the postponement is intended to give the company more time to finalize that transaction once all conditions are satisfied or waived.
Mountain Lake Acquisition Corp. is postponing its extraordinary general meeting of shareholders to June 16, 2026 at 10:00 a.m. Eastern time. At this Special Meeting, shareholders will vote on extending the deadline to complete an initial business combination from June 16, 2026 to September 16, 2026, referred to as the Articles Extension.
The meeting will still be held at Ellenoff Grossman & Schole LLP’s New York office with no change to the location, record date, redemption deadline, purpose, or proposals. Shareholders previously approved the proposed business combination with Avalanche Treasury Corporation on June 4, 2026, and the postponement is intended to give the company more time to finalize that transaction once all conditions are satisfied or waived.