QUANTUM CORP /DE/ (QMCO) · Insider Trading (Form 4) SEC Filing

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-06-01 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: QUANTUM CORP /DE/ (QMCO) CIK: 0000709283 --- Reporting Owner --- Name: FICHTHORN JOHN CIK: 0001411509 Role: Director, 10%+ Owner --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-06-04 | Code: C (Conversion of derivative) Shares: +11,020,645 | Price: $5.19 Total Value: $57,241,230.13 Shares Owned After: 11,020,645 | Ownership: I (Indirect) | Nature: by Dialectic Technology SPV LLC Footnotes: [F1] On June 4, 2026 (the "Closing Date"), pursuant to a Conversion Agreement dated June 1, 2026 (the "Conversion Agreement"), by and among, among others, the Issuer and Dialectic (as defined below), Dialectic converted $57,241,228.00 of the previously issued 10.00% PIK senior secured convertible notes due 2028 (the "Convertible Notes"), consisting of the entire principal amount and all accrued and unpaid interest thereon, subject to certain conditions set forth in the Conversion Agreement (the "Conversion"). [F2] In connection with the Conversion, on the Closing Date, the Convertible Notes were cancelled, and the Issuer issued to Dialectic 11,020,645 shares of Common Stock (as defined below). [F1] On June 4, 2026 (the "Closing Date"), pursuant to a Conversion Agreement dated June 1, 2026 (the "Conversion Agreement"), by and among, among others, the Issuer and Dialectic (as defined below), Dialectic converted $57,241,228.00 of the previously issued 10.00% PIK senior secured convertible notes due 2028 (the "Convertible Notes"), consisting of the entire principal amount and all accrued and unpaid interest thereon, subject to certain conditions set forth in the Conversion Agreement (the "Conversion"). [F2] In connection with the Conversion, on the Closing Date, the Convertible Notes were cancelled, and the Issuer issued to Dialectic 11,020,645 shares of Common Stock (as defined below). [F3] These securities are held directly by Dialectic, a 10% holder of the Issuer, and indirectly by John Fichthorn. Mr. Fichthorn is the Manager of Dialectic Technology Manager LLC, the Manager of Dialectic. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of the Reporting Person's pecuniary interest therein, if any. [Transaction #2] Security: Common Stock Date: 2026-06-04 | Code: A (Grant or award) Shares: +3,083,975 | Price: $5.19 Total Value: $16,018,166.15 Shares Owned After: 14,104,620 | Ownership: I (Indirect) | Nature: by Dialectic Technology SPV LLC Footnotes: [F1] On June 4, 2026 (the "Closing Date"), pursuant to a Conversion Agreement dated June 1, 2026 (the "Conversion Agreement"), by and among, among others, the Issuer and Dialectic (as defined below), Dialectic converted $57,241,228.00 of the previously issued 10.00% PIK senior secured convertible notes due 2028 (the "Convertible Notes"), consisting of the entire principal amount and all accrued and unpaid interest thereon, subject to certain conditions set forth in the Conversion Agreement (the "Conversion"). [F2] In connection with the Conversion, on the Closing Date, the Convertible Notes were cancelled, and the Issuer issued to Dialectic 11,020,645 shares of Common Stock (as defined below). [F1] On June 4, 2026 (the "Closing Date"), pursuant to a Conversion Agreement dated June 1, 2026 (the "Conversion Agreement"), by and among, among others, the Issuer and Dialectic (as defined below), Dialectic converted $57,241,228.00 of the previously issued 10.00% PIK senior secured convertible notes due 2028 (the "Convertible Notes"), consisting of the entire principal amount and all accrued and unpaid interest thereon, subject to certain conditions set forth in the Conversion Agreement (the "Conversion"). [F2] In connection with the Conversion, on the Closing Date, the Convertible Notes were cancelled, and the Issuer issued to Dialectic 11,020,645 shares of Common Stock (as defined below). [F4] On the Closing Date, as consideration for the Conversion, the Issuer issued to Dialectic, (i) 3,083,975 additional shares of Common Stock (the "Consideration Shares"), which represents the quotient of (A) approximately $13.0 million, the present value of nominal PIK interest that would accrue on the Convertible Notes from the Closing Date to the maturity date thereof, discounted at a rate of 11%, plus (B) approximately $3.0 million, the Term Loan Deferred Cash Interest Amount (as defined in the Credit Agreement) owed to Dialectic, divided by $5.194. [F3] These securities are held directly by Dialectic, a 10% holder of the Issuer, and indirectly by John Fichthorn. Mr. Fichthorn is the Manager of Dialectic Technology Manager LLC, the Manager of Dialectic. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of the Reporting Person's pecuniary interest therein, if any. --- Derivative Transactions --- [Transaction #1] Security: Warrant (right to buy) Date: 2026-06-01 | Code: J (Other acquisition/disposition) Shares: +105,911 Exercisable: N/A | Expires: 2031-06-01 Shares Owned After: 105,911 | Ownership: I (Indirect) | Nature: by Dialectic Technology SPV LLC Footnotes: [F6] On June 1, 2026 ("Issuance Date"), the Issuer issued to Dialectic Technology SPV LLC ("Dialectic") a warrant (the "Conversion Warrant") to purchase 105,911 (as may be adjusted pursuant to the Conversion Warrant) shares of common stock, par value $0.01 per share of the Issuer (the "Common Stock"), at an exercise price equal to $5.194 per share (as adjusted from time to time in accordance with the Conversion Warrant) on or after the Issuance Date and until the date that is five (5) years from the Issuance Date. [F6] On June 1, 2026 ("Issuance Date"), the Issuer issued to Dialectic Technology SPV LLC ("Dialectic") a warrant (the "Conversion Warrant") to purchase 105,911 (as may be adjusted pursuant to the Conversion Warrant) shares of common stock, par value $0.01 per share of the Issuer (the "Common Stock"), at an exercise price equal to $5.194 per share (as adjusted from time to time in accordance with the Conversion Warrant) on or after the Issuance Date and until the date that is five (5) years from the Issuance Date. [F6] On June 1, 2026 ("Issuance Date"), the Issuer issued to Dialectic Technology SPV LLC ("Dialectic") a warrant (the "Conversion Warrant") to purchase 105,911 (as may be adjusted pursuant to the Conversion Warrant) shares of common stock, par value $0.01 per share of the Issuer (the "Common Stock"), at an exercise price equal to $5.194 per share (as adjusted from time to time in accordance with the Conversion Warrant) on or after the Issuance Date and until the date that is five (5) years from the Issuance Date. [F6] On June 1, 2026 ("Issuance Date"), the Issuer issued to Dialectic Technology SPV LLC ("Dialectic") a warrant (the "Conversion Warrant") to purchase 105,911 (as may be adjusted pursuant to the Conversion Warrant) shares of common stock, par value $0.01 per share of the Issuer (the "Common Stock"), at an exercise price equal to $5.194 per share (as adjusted from time to time in accordance with the Conversion Warrant) on or after the Issuance Date and until the date that is five (5) years from the Issuance Date. [F6] On June 1, 2026 ("Issuance Date"), the Issuer issued to Dialectic Technology SPV LLC ("Dialectic") a warrant (the "Conversion Warrant") to purchase 105,911 (as may be adjusted pursuant to the Conversion Warrant) shares of common stock, par value $0.01 per share of the Issuer (the "Common Stock"), at an exercise price equal to $5.194 per share (as adjusted from time to time in accordance with the Conversion Warrant) on or after the Issuance Date and until the date that is five (5) years from the Issuance Date. [F6] On June 1, 2026 ("Issuance Date"), the Issuer issued to Dialectic Technology SPV LLC ("Dialectic") a warrant (the "Conversion Warrant") to purchase 105,911 (as may be adjusted pursuant to the Conversion Warrant) shares of common stock, par value $0.01 per share of the Issuer (the "Common Stock"), at an exercise price equal to $5.194 per share (as adjusted from time to time in accordance with the Conversion Warrant) on or after the Issuance Date and until the date that is five (5) years from the Issuance Date. [F6] On June 1, 2026 ("Issuance Date"), the Issuer issued to Dialectic Technology SPV LLC ("Dialectic") a warrant (the "Conversion Warrant") to purchase 105,911 (as may be adjusted pursuant to the Conversion Warrant) shares of common stock, par value $0.01 per share of the Issuer (the "Common Stock"), at an exercise price equal to $5.194 per share (as adjusted from time to time in accordance with the Conversion Warrant) on or after the Issuance Date and until the date that is five (5) years from the Issuance Date. [F6] On June 1, 2026 ("Issuance Date"), the Issuer issued to Dialectic Technology SPV LLC ("Dialectic") a warrant (the "Conversion Warrant") to purchase 105,911 (as may be adjusted pursuant to the Conversion Warrant) shares of common stock, par value $0.01 per share of the Issuer (the "Common Stock"), at an exercise price equal to $5.194 per share (as adjusted from time to time in accordance with the Conversion Warrant) on or after the Issuance Date and until the date that is five (5) years from the Issuance Date. [F3] These securities are held directly by Dialectic, a 10% holder of the Issuer, and indirectly by John Fichthorn. Mr. Fichthorn is the Manager of Dialectic Technology Manager LLC, the Manager of Dialectic. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of the Reporting Person's pecuniary interest therein, if any. [Transaction #2] Security: Convertible Notes Date: 2026-06-04 | Code: C (Conversion of derivative) Shares: -57,241,228 Shares Owned After: 0 | Ownership: I (Indirect) | Nature: by Dialectic Technology SPV LLC Footnotes: [F1] On June 4, 2026 (the "Closing Date"), pursuant to a Conversion Agreement dated June 1, 2026 (the "Conversion Agreement"), by and among, among others, the Issuer and Dialectic (as defined below), Dialectic converted $57,241,228.00 of the previously issued 10.00% PIK senior secured convertible notes due 2028 (the "Convertible Notes"), consisting of the entire principal amount and all accrued and unpaid interest thereon, subject to certain conditions set forth in the Conversion Agreement (the "Conversion"). [F2] In connection with the Conversion, on the Closing Date, the Convertible Notes were cancelled, and the Issuer issued to Dialectic 11,020,645 shares of Common Stock (as defined below). [F1] On June 4, 2026 (the "Closing Date"), pursuant to a Conversion Agreement dated June 1, 2026 (the "Conversion Agreement"), by and among, among others, the Issuer and Dialectic (as defined below), Dialectic converted $57,241,228.00 of the previously issued 10.00% PIK senior secured convertible notes due 2028 (the "Convertible Notes"), consisting of the entire principal amount and all accrued and unpaid interest thereon, subject to certain conditions set forth in the Conversion Agreement (the "Conversion"). [F2] In connection with the Conversion, on the Closing Date, the Convertible Notes were cancelled, and the Issuer issued to Dialectic 11,020,645 shares of Common Stock (as defined below). [F1] On June 4, 2026 (the "Closing Date"), pursuant to a Conversion Agreement dated June 1, 2026 (the "Conversion Agreement"), by and among, among others, the Issuer and Dialectic (as defined below), Dialectic converted $57,241,228.00 of the previously issued 10.00% PIK senior secured convertible notes due 2028 (the "Convertible Notes"), consisting of the entire principal amount and all accrued and unpaid interest thereon, subject to certain conditions set forth in the Conversion Agreement (the "Conversion"). [F3] These securities are held directly by Dialectic, a 10% holder of the Issuer, and indirectly by John Fichthorn. Mr. Fichthorn is the Manager of Dialectic Technology Manager LLC, the Manager of Dialectic. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of the Reporting Person's pecuniary interest therein, if any. [F1] On June 4, 2026 (the "Closing Date"), pursuant to a Conversion Agreement dated June 1, 2026 (the "Conversion Agreement"), by and among, among others, the Issuer and Dialectic (as defined below), Dialectic converted $57,241,228.00 of the previously issued 10.00% PIK senior secured convertible notes due 2028 (the "Convertible Notes"), consisting of the entire principal amount and all accrued and unpaid interest thereon, subject to certain conditions set forth in the Conversion Agreement (the "Conversion"). [F2] In connection with the Conversion, on the Closing Date, the Convertible Notes were cancelled, and the Issuer issued to Dialectic 11,020,645 shares of Common Stock (as defined below). [F1] On June 4, 2026 (the "Closing Date"), pursuant to a Conversion Agreement dated June 1, 2026 (the "Conversion Agreement"), by and among, among others, the Issuer and Dialectic (as defined below), Dialectic converted $57,241,228.00 of the previously issued 10.00% PIK senior secured convertible notes due 2028 (the "Convertible Notes"), consisting of the entire principal amount and all accrued and unpaid interest thereon, subject to certain conditions set forth in the Conversion Agreement (the "Conversion"). [F2] In connection with the Conversion, on the Closing Date, the Convertible Notes were cancelled, and the Issuer issued to Dialectic 11,020,645 shares of Common Stock (as defined below). [F1] On June 4, 2026 (the "Closing Date"), pursuant to a Conversion Agreement dated June 1, 2026 (the "Conversion Agreement"), by and among, among others, the Issuer and Dialectic (as defined below), Dialectic converted $57,241,228.00 of the previously issued 10.00% PIK senior secured convertible notes due 2028 (the "Convertible Notes"), consisting of the entire principal amount and all accrued and unpaid interest thereon, subject to certain conditions set forth in the Conversion Agreement (the "Conversion"). [F3] These securities are held directly by Dialectic, a 10% holder of the Issuer, and indirectly by John Fichthorn. Mr. Fichthorn is the Manager of Dialectic Technology Manager LLC, the Manager of Dialectic. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of the Reporting Person's pecuniary interest therein, if any. [F3] These securities are held directly by Dialectic, a 10% holder of the Issuer, and indirectly by John Fichthorn. Mr. Fichthorn is the Manager of Dialectic Technology Manager LLC, the Manager of Dialectic. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of the Reporting Person's pecuniary interest therein, if any. --- Holdings --- [Holding #1] Security: Common Stock Ownership: D (Direct) Footnotes: [F5] Includes 1,625 shares of Common Stock received by the Reporting Report as a result of a distribution of assets from a trust on June 1, 2026, which shares previously held indirectly by such trust were previously inadvertently omitted. --- Footnotes (Complete Index) --- F1: On June 4, 2026 (the "Closing Date"), pursuant to a Conversion Agreement dated June 1, 2026 (the "Conversion Agreement"), by and among, among others, the Issuer and Dialectic (as defined below), Dialectic converted $57,241,228.00 of the previously issued 10.00% PIK senior secured convertible notes due 2028 (the "Convertible Notes"), consisting of the entire principal amount and all accrued and unpaid interest thereon, subject to certain conditions set forth in the Conversion Agreement (the "Conversion"). F2: In connection with the Conversion, on the Closing Date, the Convertible Notes were cancelled, and the Issuer issued to Dialectic 11,020,645 shares of Common Stock (as defined below). F3: These securities are held directly by Dialectic, a 10% holder of the Issuer, and indirectly by John Fichthorn. Mr. Fichthorn is the Manager of Dialectic Technology Manager LLC, the Manager of Dialectic. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of the Reporting Person's pecuniary interest therein, if any. F4: On the Closing Date, as consideration for the Conversion, the Issuer issued to Dialectic, (i) 3,083,975 additional shares of Common Stock (the "Consideration Shares"), which represents the quotient of (A) approximately $13.0 million, the present value of nominal PIK interest that would accrue on the Convertible Notes from the Closing Date to the maturity date thereof, discounted at a rate of 11%, plus (B) approximately $3.0 million, the Term Loan Deferred Cash Interest Amount (as defined in the Credit Agreement) owed to Dialectic, divided by $5.194. F5: Includes 1,625 shares of Common Stock received by the Reporting Report as a result of a distribution of assets from a trust on June 1, 2026, which shares previously held indirectly by such trust were previously inadvertently omitted. F6: On June 1, 2026 ("Issuance Date"), the Issuer issued to Dialectic Technology SPV LLC ("Dialectic") a warrant (the "Conversion Warrant") to purchase 105,911 (as may be adjusted pursuant to the Conversion Warrant) shares of common stock, par value $0.01 per share of the Issuer (the "Common Stock"), at an exercise price equal to $5.194 per share (as adjusted from time to time in accordance with the Conversion Warrant) on or after the Issuance Date and until the date that is five (5) years from the Issuance Date. --- Signature --- /s/ Tara Ilges, attorney-in-fact for John A. Fichthorn (2026-06-08)