NasdaqFinancialsBlank ChecksINCLINE VILLAGE, NV

Mountain Lake Acquisition Corp. II MLAA

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Estimated market cap $492.25M48.98M shares, shares as of Nov 6, 2026CIK 2094265

Insider trades, 12 mo

1 buy · 0 sells

$5.10M bought, open market

Congress trades, 24 mo

—

No disclosed trades

13F holders, Q2 2026

88.2% of shares · 6 added

13F holders

…

Lobbying, 12 mo

—

No lobbying filings

Federal contracts, 12 mo

—

None matched

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Latest 10-Q

Q3 2026

What changed in Mountain Lake Acquisition Corp. II's latest quarterly report, compared with the one before.

Filed Nov 6, 2026 · Quarter ended Sep 30, 2026

Compared with the 10-Q for the quarter ended Jun 30, 2026. Sections compared: management's discussion, risk factors, legal proceedings and controls and procedures.

Read the 10-Q on sec.gov ↗Filing index ↗

Latest 10-Q

What changed in Mountain Lake Acquisition Corp. II's latest quarterly report, compared with the one before.

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IPO prospectus

Priced

Mountain Lake Acquisition Corp. II’s initial public offering: where it stands and what the registration statement says.

Priced · Proposed ticker MLAAU, Nasdaq · First filed Nov 26, 2025 · Priced Jan 28, 2026

Raised

$313.2M

price times shares, before any over-allotment

Price per share

$10.00

on the final prospectus

Shares offered

31.32M

base offering

Read from the S-1/A filed Jan 21, 2026 · Read it on sec.gov ↗

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AI summary of the prospectus. Written by AI from the parts of the prospectus listed in the filing, and checked against its text. This is information, not investment advice.

All filings of this IPO Read the S-1/A on sec.gov ↗

IPO prospectus

Mountain Lake Acquisition Corp. II’s initial public offering: where it stands and what the registration statement says.

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Insider trades

1 in 12 mo

Open-market trades from Form 4. 10b5-1 marks a plan set in advance.

No open-market insider trades reported since Jan 28, 2026. Insiders have two business days to file.

Recent insider trades
Insider	Traded	Type	Value	Since trade
Douglas Horlick Chief Financial Officer, Director, 10% owner	Jan 28 Form 4 ↗	Buy	+$5.1M 510,000 sh @ $10.00	—

All MLAA insider trades →Planned sales (Form 144): see notices

Insider trades

Open-market trades from Form 4. 10b5-1 marks a plan set in advance.

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13F holders

32.61M shares

59 funds report MLAA. Values checked against market prices.

Funds own 88% of Class A shares (Q2 2026)

59 funds hold the Class A shares.

Q3 2026: 29% · 5,560 of ~8,900 funds reported so far

Q2 202688%
Q3 2026 (so far)29%

Reports for the quarter ending Sep 30, 2026 are still coming in (21 positions so far, against 60 the quarter before), so we compare the two complete quarters before it.

Q2 2026. 32 new, 6 added to, 10 trimmed, 4 exited since Q1 2026.

Top 13F holders
#
1	Aristeia Capital, LLC 13F ↗	2.19M	$21.7M	New
2	Adage Capital Partners GP, LLC 13F ↗	2.10M	$20.9M	unchanged
3	Magnetar Financial LLC 13F ↗	2.00M	$19.9M	unchanged
4	Alberta Investment Management Corp 13F ↗	1.75M	$17.4M	New
5	Linden Advisors LP 13F ↗	1.50M	$14.9M	unchanged
6	AQR Arbitrage LLC 13F ↗	1.45M	$14.4M	New
7	Highbridge Capital Management LLC 13F ↗	1.31M	$13.0M	+372.7%
8	Kryger Capital LLC 13F ↗	1.27M	$12.6M	New
9	LMR Partners LLP 13F ↗	1.25M	$12.4M	New
10	D. E. Shaw & Co., Inc. 13F ↗	1.08M	$10.7M	+232.3%

Download CSV Every fund that holds MLAA, not only these ten. A download holds at most 10,000 rows; narrow the filters to get a smaller slice.

13F holders

Funds that report this stock, checked against market prices.

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Trades by members of Congress

Disclosed in dollar ranges, up to 45 days after the trade.

No recent congressional trades for this company.

Trades by members of Congress

Disclosed in dollar ranges, up to 45 days after the trade.

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Lobbying

What Mountain Lake Acquisition Corp. II and its lobbying firms report each quarter.

No recent lobbying filings for this company.

Lobbying

What Mountain Lake Acquisition Corp. II and its lobbying firms report each quarter.

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Institutional ownership over time

How many funds reported holding the stock at the end of each quarter, and how many shares they held between them.

Funds holding the stock

Shares they report

Funds holding the stock by quarter

Q1 2026	31	—	16.90M	$166.4M
Q2 2026	59	+28	32.61M	$323.8M
Q3 2026	21	-38	10.68M	$107.0M

Each point is a quarter-end, from Q1 2026 to Q3 2026. A fund's 13F lists its long positions in US-listed securities as of the last day of the quarter and arrives up to 45 days later, so each point shows holdings at quarter-end, not on the day they were reported.

Common shares only; options and bonds are left out. When a fund amends a report, the amended version is the one counted.

The history follows the company's current CUSIP number (G6301L109). If the company's shares were ever re-issued under a different CUSIP, the quarters before the change are not part of this series, so the first point (Q1 2026) can be later than the stock's first appearance in 13F reports.

Share counts are adjusted for stock splits; none took place between these quarters. Values are in dollars as reported at the time and are not adjusted.

A quarter appears once our daily update has built its summary. If a summary cannot be built, older reports are kept and the chart shows the quarters it has until the next update repairs it.

Institutional ownership over time

How many funds reported holding the stock at the end of each quarter, and how many shares they held between them.

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More filings and data

Each opens the table.

Ownership stakes4 in 12 mo 8-K eventsNone in 90 days PatentsNone on record Short interestFINRA · updated Oct 15 Planned insider salesNone in 12 mo Executive payNone on record Wikipedia attentionNone on record SEC enforcementNone on record Pending deal1 deal filed lately IPO history1 registration Ownership stakes…8-K events…Patents…Short interest…Planned insider sales…Executive pay…Wikipedia attention…SEC enforcement…

About the company

The basics from the company’s SEC registration.

Legal name: Mountain Lake Acquisition Corp. II
Address: 930 TAHOE BLVD STE 802 PMB 45, INCLINE VILLAGE, NV 89451
Phone: 775-204-1489
Fiscal year ends: Dec 31
Filer category: Non-accelerated filer, smaller reporting company, emerging growth company
Incorporated in: Cayman Islands
Listed as: MLAA (Nasdaq), MLAAU (Nasdaq), MLAAW (Nasdaq)
SEC filings: All filings on SEC EDGAR ↗

About the company

The basics from the company’s SEC registration.

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$10.05+$0.02 (+0.20%) Nov 13 close

1M3M1Y

Oct 13, 2026Low $10.00 · High $10.05Nov 13, 2026

Aug 13, 2026Low $9.98 · High $10.06Nov 13, 2026

Mar 19, 2026Low $9.80 · High $10.14Nov 13, 2026

Congress purchase Congress sale Insider sale over $1M

Adjusted for stock splits; not for dividends. Where prices come from.

Live chart

Intraday and historical prices from TradingView. Quotes may be delayed.

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Information, not investment advice. Company matching is automatic; check the source before relying on one row.