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MTN SCHEDULE 13D/A: Activist campaign

Filed with the SEC on · accession 0000902664-26-003894

MTN filed a SCHEDULE 13D/A (schedule 13d/a) with the SEC on Sep 22, 2026. A report the company filed with the SEC (the US market regulator). The stock moved -1.0% by the first close after the filing.

Summary of the filing

Oasis Management, a reporting person on the Schedule 13D for Vail Resorts, disclosed additional open-market purchases of common stock totaling 423,546 shares between September 16-18, 2026 at prices around $139 per share.

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Key details

Shares purchased on 09/16/2026$24K
Shares purchased on 09/17/2026$150K
Shares purchased on 09/18/2026$250K
Total shares purchased since last 13D filing$424K
Reporting person / shareholderOasis Management
IssuerVail Resorts Inc

How MTN stock reacted

Close before

$140.43

Sep 21, 2026

First close after

-1.03%

$138.98

5 trading days

-1.67%

$138.09

Since filing

+12.93%

$158.59

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Frequently asked questions

What did MTN file with the SEC on Sep 22, 2026?

MTN filed a SCHEDULE 13D/A (Activist campaign). Oasis Management, a reporting person on the Schedule 13D for Vail Resorts, disclosed additional open-market purchases of common stock totaling 423,546 shares between September 16-18, 2026 at prices around $139 per share.

What does a activist campaign mean for MTN stock?

A settlement removes uncertainty; the stock often reacts to whether the amount is bigger or smaller than investors expected.

How do I read a SCHEDULE 13D/A?

A report the company filed with the SEC (the US market regulator). Start with the summary, then the key amounts and names. Compare it with the company’s earlier filings.

Why are SEC filings important?

Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A SCHEDULE 13D/A (schedule 13d/a): A report the company filed with the SEC (the US market regulator).

How did MTN stock react to this filing?

MTN closed at $140.43 before the filing and $138.98 on Sep 22, 2026 (-1.03%). Five trading days later: $138.09 (-1.67%).

Other MTN SEC filings

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