Every Form 4 that Quantum Corporation (QMCO) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow QMCO and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full QMCO filings page.
Quantum Corp Chief Revenue Officer Anthony Craythorne reported selling 1,478 shares of common stock on August 3, 2026 at $10.7281 per share. The shares were automatically sold on a non-discretionary basis to cover tax withholding from vesting of restricted stock units granted on January 1, 2026, leaving him with 13,522 shares held directly, which remain subject to a Lock-Up Letter Agreement dated June 1, 2026.
Quantum Corp’s Chief Accounting Officer, Laura A. Nash, reported an automatic sale of company stock tied to tax obligations. On July 2, 2026, 260 shares of common stock were sold at a weighted average price of $10.51 per share to cover tax withholding from restricted stock units that vested from a July 1, 2023 grant. After this transaction, Nash directly holds 10,770 shares of Quantum common stock. The sale was executed on a non-discretionary basis as part of block trades for multiple security holders and is also subject to a Lock-Up Letter Agreement dated June 1, 2026.
Quantum Corp (QMCO) President & CEO Hugues Meyrath reported an automatic sale of 6,232 shares of common stock. The shares were sold on July 2, 2026 at a weighted average price of about $10.51 per share, in block trades ranging from $10.48 to $10.53.
According to the footnotes, the shares were automatically sold on a non-discretionary basis to cover tax withholding obligations tied to the vesting of restricted stock units granted on November 1, 2025 and January 1, 2026. After this transaction, Meyrath directly holds 118,468 shares of Quantum common stock.
Quantum Corp director and 10% owner John Fichthorn reported indirect transactions through Dialectic Technology SPV LLC. On June 4, Dialectic converted $57,241,228 of 10.00% PIK senior secured convertible notes due 2028 into 11,020,645 shares of common stock, and the notes were cancelled.
As additional consideration for the conversion, Dialectic received 3,083,975 extra common shares based on a $5.194 per-share value, and now indirectly holds 14,104,620 common shares. Separately, on June 1 the company issued Dialectic a warrant to buy 105,911 common shares at an exercise price of $5.194 per share for five years, and Fichthorn directly holds 28,896 common shares, including 1,625 received from a trust distribution.
Dialectic Technology SPV LLC, a 10% owner of Quantum Corp, significantly increased its equity stake through a debt-to-equity conversion. On the June 4, 2026 closing date, Dialectic converted $57,241,228.00 of senior secured convertible notes, including all principal and accrued interest, into 11,020,645 shares of common stock at $5.194 per share.
As additional consideration for this conversion, Quantum issued Dialectic a further 3,083,975 common shares, reflecting the present value of approximately $13.0 million of future PIK interest plus about $3.0 million of deferred cash interest, divided by $5.194. Dialectic held 14,104,620 common shares after these transactions. Separately, on June 1, 2026, Quantum issued Dialectic a warrant to purchase 105,911 common shares at an exercise price of $5.194 per share, exercisable until July 1, 2031.
Quantum Corp’s Chief Accounting Officer Laura A. Nash reported two compensation-related equity moves. On April 2, 2026, 109 shares of common stock were automatically sold at a weighted average price of $5.44 to cover tax withholding on vesting restricted stock units, leaving her with 11,030 common shares held directly. On April 1, 2026, she received a grant of 49,500 nonstatutory stock options with a $5.03 exercise price, which vest in equal monthly installments over four years beginning April 1, 2026 and expire in 2033.
Quantum Corp (QMCO) Chief Revenue Officer Anthony Craythorne received a grant of 148,500 employee stock options. These options give him the right to buy Quantum common stock at an exercise price of $5.03 per share until their expiration on April 1, 2033.
The nonstatutory stock options were awarded as compensation and are classified as a grant/award acquisition, not an open-market purchase or sale. The award vests over four years in equal monthly installments beginning on April 1, 2026, conditioned on his continued service through each vesting date. After this grant, he holds 148,500 options directly.
Meyrath Hugues reported acquisition or exercise transactions in this Form 4 filing.
Quantum Corp (QMCO) President & CEO Hugues Meyrath received a grant of 850,000 employee stock options. Each option allows him to buy one share of common stock at $5.03 per share until April 1, 2033. The options vest in equal monthly installments over four years starting April 1, 2026, contingent on his continued service.
White William Hillis reported acquisition or exercise transactions in this Form 4 filing.
Quantum Corp. reported an insider equity award to its Chief Financial Officer, William Hillis White. He received a grant of 25,000 restricted stock units, each representing one share of Quantum common stock. These RSUs vest in three equal annual installments starting on March 2, 2027, contingent on his continued service with the company through each vesting date.
Quantum Corporation (QMCO) reported an insider transaction on Form 4: a director received a grant of 1,000 restricted stock units (RSUs) on 11/01/2025 at a stated price of $0 per unit.
The RSUs vest in full on the earlier of November 1, 2026 or the date of the company’s next annual stockholder meeting, subject to continued board service. Following the grant, beneficial ownership stands at 1,000 common shares, held directly.
Quantum Corporation (QMCO) reported a Form 4 showing a director received 1,000 shares of common stock via a restricted stock unit (RSU) grant on November 1, 2025 at a stated price of $0.
The RSUs vest in full on the earlier of November 1, 2026 or the date of the company’s next annual stockholder meeting, contingent on continued service on the Board. Following the transaction, the reporting person beneficially owned 1,000 shares, held directly.
Quantum Corporation (QMCO) reported an insider equity grant. President & CEO and Director Hugues Meyrath acquired 37,500 shares of common stock via RSUs at $0 on 11/01/2025. He was also granted an employee stock option for 50,000 shares at an exercise price of $9.44.
The RSUs vest in four equal annual installments beginning July 1, 2026 (vesting commencement date July 1, 2025). The stock option vests on the same four-annual-installment schedule starting July 1, 2026. After these transactions, 62,200 common shares were beneficially owned directly, and 50,000 options were held.
Hugues Meyrath, who serves as President & CEO and a director of Quantum Corp (QMCO), reported a transaction dated 10/02/2025. The filing shows 2,975 shares of common stock were sold (transaction code S) to cover tax withholding on restricted stock units that vested from a grant dated 10/01/2024. The report gives a weighted average sale price of $10.86 (execution prices ranged from $10.85 to $10.87) and states 24,700 shares remain beneficially owned after the sale. The transaction was executed as part of block trades on 10/02/2025, and the Form 4 was signed by an attorney-in-fact on 10/03/2025.
Laura A. Nash, Chief Accounting Officer of Quantum Corp (QMCO), reported transactions on Form 4 showing equity vesting and automatic share sales to cover taxes. On 10/01/2025 Ms. Nash received 500 shares (performance‑based stock units) at a purchase price of $0 upon vesting. On the same date she sold 118 shares at a weighted average price of $9.91, and on 10/02/2025 she sold 611 shares at a weighted average price of $10.86. The filings state the October 1 sales and October 2 sales were block trades executed for multiple holders and that the share disposals were automatic, non‑discretionary sales to cover tax withholding for vested awards. Beneficial ownership reported changed from 11,868 shares after the acquisition to 11,139 shares following the October 2 sale.