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QMCO SCHEDULE 13G: SEC filing

Two Seas Capital LP, Two Seas Capital GP LLC, and Sina Toussi

Filed with the SEC on · accession 0001011438-26-000549

QMCO filed a SCHEDULE 13G (schedule 13g) with the SEC on Aug 14, 2026. Two Seas Capital LP, Two Seas Capital GP LLC, and Sina Toussi filed a joint filing agreement as an exhibit to a Schedule 13G regarding their position in Quantum Corporation common stock. The stock moved +5.8% by the first close after the filing.

Summary of the filing

Two Seas Capital LP, Two Seas Capital GP LLC, and Sina Toussi filed a joint filing agreement as an exhibit to a Schedule 13G regarding their position in Quantum Corporation common stock. The filing indicates a passive investment stake in the company.

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Key details

Filer / passive investorTwo Seas Capital LP
General partner of two seas capital lpTwo Seas Capital GP LLC
Issuer of securities heldQuantum Corporation
Managing member of two seas capital gp llcSina Toussi

How QMCO stock reacted

Close before

$24.68

Aug 13, 2026

First close after

+5.79%

$26.11

5 trading days

-17.06%

$20.47

Since filing

-41.37%

$14.47

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Frequently asked questions

What did QMCO file with the SEC on Aug 14, 2026?

QMCO filed a SCHEDULE 13G (SEC filing). Two Seas Capital LP, Two Seas Capital GP LLC, and Sina Toussi filed a joint filing agreement as an exhibit to a Schedule 13G regarding their position in Quantum Corporation common stock. The filing indicates a passive investment stake in the company.

How do I read a SCHEDULE 13G?

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 13G (schedule 13g): A report the company filed with the SEC (the US market regulator).

How did QMCO stock react to this filing?

QMCO closed at $24.68 before the filing and $26.11 on Aug 14, 2026 (+5.79%). Five trading days later: $20.47 (-17.06%).

Other QMCO SEC filings

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