Jaime Vieser converts 478K MLAC (MLAC) shares into Pubco stock in SPAC Merger
Filing Impact
Filing Sentiment
Form Type
4
Rhea-AI Filing Summary
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.
Positive
- None.
Negative
- None.
Insights
These are structural SPAC merger conversions, not open-market trades.
The filing shows 478,010 Class B founder shares converting into Class A ordinary shares, then those Class A shares being exchanged into Pubco Class A common stock in connection with the Business Combination and SPAC Merger. No cash prices are involved; values are recorded at $0.0000 per share.
This pattern is typical when a SPAC closes its business combination and legacy securities migrate into the new public entity. The reporting person ends with zero Class A and Class B ordinary shares of the SPAC itself, while holding shares of Pubco instead. From an investor perspective, this is an administrative equity restructuring tied to the closing of the deal rather than a directional buy or sell signal.
Insider Trade Summary
478,010 shares exercised/converted
Mixed
2 txns
Insider
Vieser Jaime
Role
null
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise | Class B ordinary shares, par value $0.0001 per share | 478,010 | $0.00 | -- |
| Disposition | Class A ordinary shares, par value $0.0001 per share | 478,010 | $0.00 | -- |
Holdings After Transaction:
Class B ordinary shares, par value $0.0001 per share — 0 shares (Direct, null);
Class A ordinary shares, par value $0.0001 per share — 0 shares (Direct, null)
Footnotes (1)
- As described in the registration statement on Form S-1 (File No. 333-281410) of the Issuer under the heading "Description of Securities--Founder Shares," the Class B ordinary shares will automatically convert into Class A ordinary shares at the time of the Issuer's initial business combination, or at any time prior to the Issuer's initial business combination, at the option of the holder, on a one-for-one basis, subject to certain adjustments. In connection with the SPAC Merger (as defined in the Business Combination Agreement), an aggregate of 478,010 Class A ordinary shares held by the Reporting Person were exchanged into an equal number of shares of Class A common stock, par value $0.01 per share, of Pubco. Following such transaction, the Reporting Person owns zero Class A ordinary shares. On June 11, 2026, in connection with the consummation of the transactions contemplated by the Business Combination Agreement dated October 1, 2025 (as amended on January 13, 2026 and March 17, 2026, the "Business Combination Agreement" and the transactions contemplated thereto, the "Business Combination"), by and among the Issuer, Avalanche Treasury Corporation, a Delaware corporation ("Pubco") and the other parties thereto, 478,010 Class B ordinary shares were converted into an aggregate of 478,010 Class A ordinary shares (the "Class B Conversion"). Following the Class B Conversion, the Reporting Person owns zero Class B ordinary shares.
Key Figures
Class B shares converted: 478,010 shares
Class A shares exchanged: 478,010 shares
MLAC Class A holdings after: 0 shares
+2 more
5 metrics
Class B shares converted
478,010 shares
Class B ordinary shares converted into Class A on June 11, 2026
Class A shares exchanged
478,010 shares
Class A ordinary shares exchanged into Pubco Class A common stock in SPAC Merger
MLAC Class A holdings after
0 shares
Class A ordinary shares held following the transactions
MLAC Class B holdings after
0 shares
Class B ordinary shares held following the Class B Conversion
Derivative exercises
478,010 shares
Exercise/conversion of derivative security (Class B into Class A) on June 11, 2026
Key Terms
SPAC Merger, Business Combination Agreement, Class B Conversion, founder shares, +1 more
5 terms
SPAC Merger financial
"In connection with the SPAC Merger (as defined in the Business Combination Agreement), an aggregate of 478,010 Class A ordinary shares..."
A SPAC merger is when a private company combines with a SPAC, a publicly traded shell company created to find and buy a business, so the private company becomes publicly listed without a traditional initial public offering. Investors should care because this shortcut can speed up market access but often brings greater uncertainty about valuation, potential share dilution, and reliance on investor votes and future performance, which can increase stock volatility.
Business Combination Agreement financial
"transactions contemplated by the Business Combination Agreement dated October 1, 2025 (as amended on January 13, 2026 and March 17, 2026..."
A business combination agreement is a detailed contract that lays out the terms for two companies to join together—covering price, how ownership will be split, the steps needed to close the deal, and what each side promises to do or avoid before closing. For investors it matters because the agreement determines potential changes in value, control, timing, and risk exposure—think of it like the playbook for a merger that shows who wins, who pays, and what could still derail the plan.
Class B Conversion financial
"478,010 Class B ordinary shares were converted into an aggregate of 478,010 Class A ordinary shares (the "Class B Conversion")."
Pubco financial
"Avalanche Treasury Corporation, a Delaware corporation ("Pubco") and the other parties thereto, 478,010 Class B ordinary shares were converted..."
A pubco is a publicly traded company whose ownership is divided into shares bought and sold on the stock market. Think of it as a business whose ownership is open to many investors like a shop where anyone can buy a stake; it must follow public reporting rules and oversight so its finances and operations are more transparent. That transparency, along with share liquidity, is what makes pubcos investable and market-sensitive.
FAQ
What did Jaime Vieser report in this MLAC Form 4 filing?
Jaime Vieser reported converting 478,010 Class B ordinary shares into 478,010 Class A ordinary shares, then exchanging those 478,010 Class A shares into Pubco Class A common stock as part of the SPAC Merger and Business Combination closing.
Was this MLAC Form 4 an open-market buy or sell by Jaime Vieser?
No. The Form 4 records a conversion of 478,010 Class B shares into Class A shares and a disposition of 478,010 Class A shares to the issuer in exchange for Pubco Class A common stock, all tied to the SPAC Merger, not open-market trading.
What is the relationship between MLAC and Pubco in this Form 4?
Pubco, Avalanche Treasury Corporation, is the entity receiving 478,010 Class A ordinary shares through exchange into Pubco Class A common stock. This occurs under the Business Combination Agreement governing Mountain Lake Acquisition Corp.’s SPAC Merger and related Business Combination transactions.