Nash Laura A.

SEC source: 0001628280-26-047490 · wk-form4_1783454977.xml · nonDerivative · entry 1

Nash Laura A. · CIK 0001979364 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,770

F1 · shares: Represents the number of shares automatically sold on a non-discretionary basis, to cover tax withholding obligations in connection with the vesting of restricted stock units granted on July 1, 2023. This Form 4 is a required filing under the Securities Exchange Act of 1934, and the securities in this Form 4 are subject to the terms of that certain Lock-Up Letter Agreement, by and between the issuer and the Reporting Person, dated as of June 1, 2026, and is subject to clause (h) thereunder.

F2 · price: Represents a weighted average price. These shares were sold as part of block trades for multiple security holders of the issuer on July 2, 2026, at a price ranging from $10.48 to $10.53. The Reporting Person undertakes to provide upon request by the Securities and Exchange Commission, the issuer, or a securityholder of the issuer detailed information regarding the number of shares sold and the prices at which the transactions were executed.

SEC source: 0001628280-26-023655 · wk-form4_1775247333.xml · nonDerivative · entry 1

Nash Laura A. · CIK 0001979364 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,030

F1 · shares: Represents the number of shares automatically sold on a non-discretionary basis, to cover tax withholding obligations in connection with the vesting of restricted stock units granted on April 1, 2024.

F2 · price: Represents a weighted average price. These shares were sold as part of block trades for multiple security holders of the issuer on April 2, 2026, at a price ranging from $5.43 to $5.45. The Reporting Person undertakes to provide upon request by the Securities and Exchange Commission, the issuer, or a securityholder of the issuer detailed information regarding the number of shares sold and the prices at which the transactions were executed.

SEC source: 0001628280-26-023655 · wk-form4_1775247333.xml · derivative · entry 2

Nash Laura A. · CIK 0001979364 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 49,500

Underlying: Common Stock · 49,500 shares

Expires 2033-04-01

F3 · shares: This nonstatutory stock option vests over four years in equal monthly installments beginning on April 1, 2026, subject to the Reporting Persons continued service through each vesting date.

F3 · derivative.exercise_date: This nonstatutory stock option vests over four years in equal monthly installments beginning on April 1, 2026, subject to the Reporting Persons continued service through each vesting date.

SEC source: 0001979364-25-000006 · wk-form4_1759524147.xml · nonDerivative · entry 3

Nash Laura A. · CIK 0001979364 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,139

F3 · shares: Represents the number of shares automatically sold on a non-discretionary basis, to cover tax withholding obligations in connection with the vesting of restricted stock units granted on October 1, 2024.

F4 · price: Represents a weighted average price. These shares were sold as part of block trades for multiple security holders of the issuer on October 2, 2025, at a price ranging from $10.85 to $10.87. The reporting person undertakes to provide upon request by the Securities and Exchange Commission, the issuer, or a securityholder of the issuer detailed information regarding the number of shares sold and the prices at which the transactions were executed.

SEC source: 0001979364-25-000006 · wk-form4_1759524147.xml · nonDerivative · entry 2

Nash Laura A. · CIK 0001979364 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,750

F1 · shares: Represents the number of shares automatically sold on a non-discretionary basis, to cover tax withholding obligations in connection with the vesting of performance-based stock units granted on July 1, 2023.

F2 · price: Represents a weighted average price. These shares were sold as part of block trades for multiple security holders of the issuer on October 1, 2025, at a price ranging from $9.9026 to $9.9118. The reporting person undertakes to provide upon request by the Securities and Exchange Commission, the issuer, or a securityholder of the issuer detailed information regarding the number of shares sold and the prices at which the transactions were executed.

SEC source: 0001979364-25-000006 · wk-form4_1759524147.xml · nonDerivative · entry 1

Nash Laura A. · CIK 0001979364 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,868

SEC source: 0001979364-25-000004 · wk-form4_1758148192.xml · nonDerivative · entry 1

Nash Laura A. · CIK 0001979364 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,368

F1 · shares: Represents the number of shares automatically sold on a non-discretionary basis, to cover tax withholding obligations in connection with the vesting of restricted stock units granted on July 1, 2022, and July 1, 2023.

F2 · price: Represents a weighted average price. These shares were sold as part of block trades for multiple security holders of the issuer on September 12, 2025, at a price ranging from $7.3803 to $7.41. The reporting person undertakes to provide upon request by the Securities and Exchange Commission, the issuer, or a securityholder of the issuer detailed information regarding the number of shares sold and the prices at which the transactions were executed.

SEC source: 0000709283-25-000005 · wk-form4_1743799053.xml · nonDerivative · entry 1

Nash Laura A. · CIK 0001979364 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,652

F1 · shares: Represents the number of shares automatically sold on a non-discretionary basis, to cover tax withholding obligations in connection with the vesting of restricted stock units granted on April 1, 2024.

F2 · price: Represents a weighted average price. These shares were sold as part of block trades for multiple security holders of the issuer on April 2, 2025, at prices ranging from $12.81 to $12.90, inclusive. The reporting person undertakes to provide upon request by the Securities and Exchange Commission, the issuer, or a securityholder of the issuer detailed information regarding the price and number of shares sold within the range indicated herein with regard to the block trades.

SEC source: 0000709283-24-000047 · wk-form4_1733433288.xml · nonDerivative · entry 1

Nash Laura A. · CIK 0001979364 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,431

F1 · shares: Represents the number of shares automatically sold on a non-discretionary basis, to cover tax withholding obligations in connection with the vesting of restricted stock units granted on October 1, 2021, July 1, 2022 and July 1, 2023.

SEC source: 0000950170-25-006916 · ownership.xml · nonDerivative · entry 1

Nash Laura A. · CIK 0001979364 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,788

F1 · shares: This amendment to the original Form 4 filed on December 5, 2024 is being filed to correct the amount of shares sold, to cover tax withholding obligations in connection with the vesting of restricted stock units.

F2 · balance_after: As a result of this error, the number of shares reported as beneficially owned by the reporting person following the corrected transaction reflects an increase in the number of shares reported as beneficially owned in the original Form 4.

SEC source: 0000709283-24-000025 · wk-form4_1729545362.xml · nonDerivative · entry 1

Nash Laura A. · CIK 0001979364 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 99,804

F1 · shares: Grant of Restricted Stock Units (RSUs), each of which represents a contingent right to receive one share of common stock of QMCO. Vesting is subject to continued employment with QMCO through the service vesting date, which occurs in three equal annual installments on October 1, 2025, October 1, 2026 and October 1, 2027. Delayed filing arose from an error related to effecting the reverse stock split within QMCOs stock plan administration platform and the resulting delay of the distribution of the equity award agreement to reporting person. Reporting person has elected to continue to use the grant date for the reported transaction date notwithstanding the delayed distribution of the equity award agreement.

SEC source: 0000709283-24-000002 · wk-form4_1712179641.xml · nonDerivative · entry 1

Nash Laura A. · CIK 0001979364 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 92,304

F1 · shares: Grant of Restricted Stock Units (RSUs), each of which represents a contingent right to receive one share of common stock of QMCO. Vesting is subject to continued employment with QMCO through the service vesting date, which occurs in three equal annual installments on April 1, 2025, April 1, 2026 and April 1, 2027.

SEC source: 0000709283-23-000049 · wk-form4_1696613760.xml · nonDerivative · entry 1

Nash Laura A. · CIK 0001979364 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 67,304

F1 · shares: Represents the number of shares automatically sold, on a non-discretionary basis, to cover tax withholding obligations in connection with the vesting of restricted stock units granted on October 1, 2021.

SEC source: 0000709283-23-000021 · wk-form4_1689193568.xml · nonDerivative · entry 1

Nash Laura A. · CIK 0001979364 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 68,192

F1 · shares: Represents the number of shares automatically sold, on a non-discretionary basis, to cover tax withholding obligations in connection with the vesting of restricted stock units granted on July 1, 2020, and July 1, 2022.

SEC source: 0000709283-23-000016 · wk-form4_1688593561.xml · derivative · entry 2

Nash Laura A. · CIK 0001979364 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 50,000

Underlying: Common Stock · 50,000 shares

Expires 2028-07-01

F2 · derivative.exercise_price: Grant of Performance-Based Restricted Stock Units ("PSUs"), each of which represents a contingent right to receive one share of common stock of QMCO, with vesting subject to the achievement of specified level of the average closing price of a share of QMCO common stock during any one hundred (100) calendar day period occurring between July 1, 2023 and July 1, 2028. Vesting is subject to continued employment with QMCO through the later of the achievement date or service vesting date, which will occur 36 months from the grant date on July 1, 2026.

F2 · derivative.exercise_date: Grant of Performance-Based Restricted Stock Units ("PSUs"), each of which represents a contingent right to receive one share of common stock of QMCO, with vesting subject to the achievement of specified level of the average closing price of a share of QMCO common stock during any one hundred (100) calendar day period occurring between July 1, 2023 and July 1, 2028. Vesting is subject to continued employment with QMCO through the later of the achievement date or service vesting date, which will occur 36 months from the grant date on July 1, 2026.

SEC source: 0000709283-23-000016 · wk-form4_1688593561.xml · nonDerivative · entry 1

Nash Laura A. · CIK 0001979364 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 71,792

F1 · security: Grant of Restricted Stock Units ("RSUs"), each of which represents a contingent right to receive one share of common stock of QMCO. Vesting is subject to continued employment with QMCO through the service vesting date, which occurs in three equal annual installments on July 1, 2024, July 1, 2025 and July 1, 2026.