Recent 8-K filings for MLAC

• June 11, 2026, 4:01 PM ET M&A materiality 0.75 neutral item 8.01item 9.01

  Mountain Lake Acquisition Corp. closes business combination with Avalanche Treasury; shares to trade on Nasdaq as AVAT

  Business combination with Avalanche Treasury Corporation closed on June 11, 2026.

• June 5, 2026, 4:30 PM ET M&A materiality 0.80 negative item 5.07item 8.01 ◈ Shareholder Votes ×7

  Mountain Lake shareholders approve Avalanche merger; 22.8M shares redeemed

  All proposals approved at June 4 meeting, including Business Combination Agreement and Domestication.

• January 13, 2026, 6:59 PM ET M&A materiality 0.75 neutral item 1.01item 9.01 ◈ Material Agreements

  Mountain Lake Acquisition amends BCA with Avalanche Treasury; adds new parties, revises consideration

  Added Astral Horizon, L.P. and Dragonfly Ventures entities (DV, DVII) as parties to the Business Combination Agreement.

• October 7, 2025, 7:59 PM ET M&A materiality 0.80 neutral item 1.01item 3.02item 8.01item 9.01

  Mountain Lake Acquisition (MLAC) enters business combination with Avalanche Treasury in ~$274M deal

  SPAC MLAC to combine with Avalanche Treasury Company LLC; private placement of ~$274M at $10.00 per unit.

• October 2, 2025, 7:59 PM ET M&A materiality 0.85 positive item 7.01item 9.01

  Mountain Lake SPAC merges with Avalanche Treasury; $675M+ deal, $460M treasury, Q1 2026 close

  Definitive business combination valued at over $675M; combined co. to be named Avalanche Treasury Co. (AVAT) and list on Nasdaq.

Materiality & sentiment trend

Max materiality 0.85 · Median 0.62 · Most common event m_and_a

1 positive 1 negative 8 neutral

source · MLAC on sec.gov