Mountain Lake Acquisition Corp. Ii has 4 Schedule 13D or 13G filings on record since 2026-02-04. 4 holders' latest filing reports 5% or more of units, each consisting of one class a ordinary share and one-half of one redeemable warrant. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Mountain Lake Acquisition Sponsor II LLC | 25.6% | 12,516,000 | SCHEDULE 13D, 2026-02-04 | 2026-01-28 |
| Aristeia Capital, L.L.C. | 5.91% | 2,186,394 | SCHEDULE 13G, 2026-05-14 | 2026-03-31 |
| Adage Capital Management, L.P. | 5.68% | 2,100,000 | SCHEDULE 13G, 2026-05-13 | 2026-03-31 |
| Magnetar Financial LLC | 5.4% | 2,000,000 | SCHEDULE 13G, 2026-05-13 | 2026-03-31 |
Purpose of Transaction (Item 4)
Mountain Lake Acquisition Sponsor II LLC
In connection with the organization of the Issuer, on October 23, 2025, 10,005,000 Class B Ordinary Shares (the "Founder Shares") were purchased by the Sponsor for the amount of $25,000, pursuant to a Securities Subscription Agreement, dated as of October 23, 2025, by and between the Sponsor and the Issuer (the "Founder Share Purchase Agreement"), as more fully described in Item 6 of this Schedule 13D which information is incorporated herein by reference. In January 2026, the Issuer effected a share capitalization, resulting in the Sponsor holding an aggregate of 12,006,000 Founder Shares. Of the 12,006,000 Class B Ordinary Shares held, up to 6,000 shares are subject to forfeiture in the event that the underwriter in the Issuer's initial public offering does not fully exercise its over-allotment option. On January 28, 2026, simultaneously with the consummation of the Issuer's Initial Public Offering (the "IPO"), the Sponsor purchased 510,000 units ("Placement Units") of the Issuer at $10.00 per Placement Unit, pursuant to a Private Placement Units Purchase Agreement, dated as of January 26, 2026, by and between the Issuer and the Sponsor (the "Placement Units Purchase Agreement"), as more fully described in Item 6 of this Schedule 13D, which information is incorporated herein by reference. Each Placement Unit consists of one Class A Ordinary Share and one-half of a warrant, with each whole warrant exercisable into one Class A ordinary share at an exercise price of $11.50, …The first part of Item 4 of the SCHEDULE 13D filed 2026-02-04; the filing has the rest
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2026-02-04 | Mountain Lake Acquisition Sponsor II LLC | 25.6% | SCHEDULE 13D |
| 2026-05-13 | Adage Capital Management, L.P. | 5.68% | SCHEDULE 13G |
| 2026-05-13 | Magnetar Financial LLC | 5.4% | SCHEDULE 13G |
| 2026-05-14 | Aristeia Capital, L.L.C. | 5.91% | SCHEDULE 13G |
Tools for this story
Each opens in a new tab, filled in for Mountain Lake Acquisition Corp. Ii. With no account yet, you sign up free and land on the result.
Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.