DODSON J MICHAEL

SEC source: 0001225208-26-007181 · doc4.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,514

F1 · shares: Represents an award of restricted stock units ("RSUs") that vests in four equal quarterly installments from the grant date, subject to the reporting person's continued service to the issuer on each vesting date. Each RSU represents the contingent right to receive one share of the issuer's common stock.

SEC source: 0001193125-26-272509 · ownership.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,233

F1 · shares: Represents the number of shares automatically sold, on a non-discretionary basis, to cover the tax withholding obligation in connection with the vesting of the RSUs.

SEC source: 0001225208-26-000603 · doc4.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,576

F1 · shares: Represents a grant of restricted stock units under the issuer's director compensation program. The restricted stock units vest in full on January 12, 2027, provided that the reporting person remains in continuous service with the issuer as of the vesting date. Each restricted stock unit represents the contingent right to receive one share of the issuer's common stock.

F2 · balance_after: The amount shown is adjusted to reflect a 1 for 30 reverse stock split by the issuer on August 11, 2025.

SEC source: 0001213900-25-054671 · marketforms-69930.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 39,132

F1 · shares: Represents the number of shares automatically sold, on a non-discretionary basis, to cover tax withholding obligation in connection with the vesting of the RSUs.

SEC source: 0001225208-25-000330 · doc4.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,486

F1 · shares: Represents a grant of restricted stock units under the issuer's director compensation program. The restricted stock units vest in full on January 2, 2026, provided that the reporting person remains in continuous service with the issuer as of the vesting date. Each restricted stock unit represents the contingent right to receive one share of the issuer's common stock.

SEC source: 0001213900-24-052914 · marketforms-66345.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 45,053

F1 · price: Represents the number of shares automatically sold, on a non-discretionary basis, to cover tax withholding obligation in connection with the vesting of the RSUs.

SEC source: 0001209191-24-000745 · doc4.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,236

F1 · shares: The restricted stock units ("RSUs") vest as to 100% of the award on January 2, 2025, subject to the Reporting Person's continued service to the Issuer through such date. The RSUs were granted to the reporting person pursuant to the Company's Non-employee Director Compensation Policy.

F2 · price: Each RSU represents a contingent right to receive one share of the Issuer's common stock upon settlement.

F3 · balance_after: The Reporting Person's holdings have been adjusted to reflect the 1-for-20 reverse stock split of the Issuer's common stock that became effective on August 16, 2023.

SEC source: 0001213900-23-048951 · marketforms-61819.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 50,000

F1 · shares: Represents a grant of restricted stock units. Vesting shall occur over a three-year period and shall vest as to 1/3rd of the total number of shares (16,667 shares in year 1 and 2; 16,666 shares in year 3) on each annual anniversary of the vesting start date, subject to continued service to the Company in the capacity of an employee.

SEC source: 0001209191-23-001896 · doc4.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 59,726

F1 · shares: The restricted stock units ("RSUs") vest as to 100% of the award on January 2, 2024, subject to the Reporting Person's continued service to the Issuer through such date. The RSUs were granted to the reporting person pursuant to the Company's Non-employee Director Compensation Policy.

F2 · price: Each RSU represents a contingent right to receive one share of the Issuer's common stock upon settlement.

SEC source: 0000709283-22-000043 · wf-form4_166516892316085.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · Senior Vice President, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 870,372

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: 0000709283-22-000040 · wf-form4_166302932671880.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · Senior Vice President, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 881,718

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 September 6, 2019.

SEC source: 0001209191-22-046081 · doc4.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 50,000

F1 · shares: The RSU vests as to 1/3 of the total award on each of August 12, 2023, August 12, 2024 and August 12, 2025, subject to the Reporting Person's continued service to the Issuer through each such date. The RSU was granted to the reporting person pursuant to the Company's Non-employee Director Compensation Policy.

F2 · price: Each RSU represents a contingent right to receive one share of the Issuer's common stock upon settlement.

SEC source: 0000709283-22-000030 · wf-form4_165763894286998.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · Senior Vice President, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 916,539

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 and performance-based stock units granted on July 1, 2020.

SEC source: 0000709283-22-000028 · wf-form4_165714494228259.xml · derivative · entry 2

DODSON J MICHAEL · CIK 0001231559 · Senior Vice President, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 41,625 shares

Expires 2027-07-01

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, 2022 and July 1, 2027. 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, 2025.

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, 2022 and July 1, 2027. 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, 2025.

SEC source: 0000709283-22-000028 · wf-form4_165714494228259.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · Senior Vice President, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 949,356

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, 2023, July 1, 2024 and July 1, 2025.

SEC source: 0000709283-22-000008 · wf-form4_165101741052696.xml · derivative · entry 2

DODSON J MICHAEL · CIK 0001231559 · Senior Vice President, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 10,000 shares

Expires 2022-04-18

F1 · kind: Exercise of irrevocable subscription rights to acquire shares of common stock at the closing of the Issuer's rights offering on April 22, 2022.

SEC source: 0000709283-22-000008 · wf-form4_165101741052696.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · Senior Vice President, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 824,356

F1 · kind: Exercise of irrevocable subscription rights to acquire shares of common stock at the closing of the Issuer's rights offering on April 22, 2022.

F2 · balance_after: Includes 3,906 shares acquired under Quantum Corporation's Employee Stock Purchase Plan on February 4, 2022.

SEC source: 0000709283-22-000002 · wf-form4_164185633484081.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · Senior Vice President, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 810,450

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 stock units granted on July 1, 2020.

SEC source: 0000709283-21-000068 · wf-form4_163346698259551.xml · derivative · entry 2

DODSON J MICHAEL · CIK 0001231559 · Senior Vice President, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 87,500 shares

Expires 2026-10-01

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 levels of the average closing prices of a share of QMCO common stock during any one hundred (100) calendar day period occurring between October 1, 2021 and October 1, 2026. Vesting is subject to continued employment with QMCO through the later of the achievement date or service vesting date, which occurs in three installments on October 1, 2022, October 1, 2023 and October 1, 2024.

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 levels of the average closing prices of a share of QMCO common stock during any one hundred (100) calendar day period occurring between October 1, 2021 and October 1, 2026. Vesting is subject to continued employment with QMCO through the later of the achievement date or service vesting date, which occurs in three installments on October 1, 2022, October 1, 2023 and October 1, 2024.

SEC source: 0000709283-21-000068 · wf-form4_163346698259551.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · Senior Vice President, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 829,066

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 October 1, 2022, October 1, 2023 and October 1, 2024.

SEC source: 0000709283-21-000057 · wf-form4_163156649651820.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · Senior Vice President, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 741,566

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 September 6, 2019.

F2 · balance_after: Includes 928 shares acquired under Quantum Corporation's Employee Stock Purchase Plan on August 5, 2021.

SEC source: 0000709283-21-000034 · wf-form4_162577222648501.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · Senior Vice President, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 780,032

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 and performance-based stock units granted on July 1, 2020.

SEC source: 0000709283-21-000029 · wf-form4_162368878620798.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · Senior Vice President, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 815,321

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 June 1, 2018.

SEC source: 0000709283-21-000027 · wf-form4_162309209708339.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · Senior Vice President, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 834,151

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 stock units granted on June 1, 2018.

SEC source: 0000709283-21-000021 · wf-form4_162142891649035.xml · derivative · entry 4

DODSON J MICHAEL · CIK 0001231559 · Senior Vice President, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 37,500 shares

Expires 2025-07-01

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Performance-Based Restricted Stock Units were previously reported on July 2, 2020, which vest in two equal components upon the later of achievement of specified levels of the average closing prices of a share of QMCO common stock during any hundred (100) calendar day period, and upon specified service dates, whichever is later. The second achievement date occurred on May 11, 2021, as certified by the leadership and compensation committee of QMCO, resulting in 37,500 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest on July 1, 2023, subject to continued employment. These shares are reflected on Table I, and no units remain that are subject to these performance-based and time-based vesting conditions.

F2 · derivative.exercise_date: Performance-Based Restricted Stock Units were previously reported on July 2, 2020, which vest in two equal components upon the later of achievement of specified levels of the average closing prices of a share of QMCO common stock during any hundred (100) calendar day period, and upon specified service dates, whichever is later. The second achievement date occurred on May 11, 2021, as certified by the leadership and compensation committee of QMCO, resulting in 37,500 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest on July 1, 2023, subject to continued employment. These shares are reflected on Table I, and no units remain that are subject to these performance-based and time-based vesting conditions.

SEC source: 0000709283-21-000021 · wf-form4_162142891649035.xml · derivative · entry 3

DODSON J MICHAEL · CIK 0001231559 · Senior Vice President, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 80,000 shares

Expires 2029-09-06

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Performance-Based Restricted Stock Units were previously reported on September 10, 2019, which vest in three equal components upon the later of achievement of specified levels of the average closing prices of a share of QMCO common stock during any hundred (100) calendar day period, and upon specified service dates, whichever is later. The third achievement date occurred on May 11, 2021, as certified by the leadership and compensation committee of QMCO, resulting in 80,000 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest on September 5, 2022, subject to continued employment. These shares are reflected on Table I, and no units remain that are subject to these performance-based and time-based vesting conditions.

F1 · derivative.exercise_date: Performance-Based Restricted Stock Units were previously reported on September 10, 2019, which vest in three equal components upon the later of achievement of specified levels of the average closing prices of a share of QMCO common stock during any hundred (100) calendar day period, and upon specified service dates, whichever is later. The third achievement date occurred on May 11, 2021, as certified by the leadership and compensation committee of QMCO, resulting in 80,000 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest on September 5, 2022, subject to continued employment. These shares are reflected on Table I, and no units remain that are subject to these performance-based and time-based vesting conditions.

SEC source: 0000709283-21-000021 · wf-form4_162142891649035.xml · nonDerivative · entry 2

DODSON J MICHAEL · CIK 0001231559 · Senior Vice President, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 853,870

F3 · security: Grant of Performance-Based Restricted Stock Units ("PSUs"), each of which represents a contingent right to receive one share of common stock of QMCO, acquired with vesting subject to the achievement of specified performance-based conditions, occurred on May 11, 2021 as certified by the leadership and compensation committee of QMCO, resulting in 75,000 units for the Free Cash Flow results based on the Company's performance as of March 31, 2021 (end of the QMCO's Fiscal 2021 Year). 100% of PSUs are earned as 100% of the free cash flow target performance goal is achieved. However, these shares remain subject to time-based vesting conditions and will therefore vest in equal installments with 1/3rd July 1, 2021, 1/3rd July 1, 2022 and 1/3rd July 1, 2023, subject to continued employment.

SEC source: 0000709283-21-000021 · wf-form4_162142891649035.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · Senior Vice President, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 778,870

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · security: Performance-Based Restricted Stock Units were previously reported on September 10, 2019, which vest in three equal components upon the later of achievement of specified levels of the average closing prices of a share of QMCO common stock during any hundred (100) calendar day period, and upon specified service dates, whichever is later. The third achievement date occurred on May 11, 2021, as certified by the leadership and compensation committee of QMCO, resulting in 80,000 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest on September 5, 2022, subject to continued employment. These shares are reflected on Table I, and no units remain that are subject to these performance-based and time-based vesting conditions.

F2 · security: Performance-Based Restricted Stock Units were previously reported on July 2, 2020, which vest in two equal components upon the later of achievement of specified levels of the average closing prices of a share of QMCO common stock during any hundred (100) calendar day period, and upon specified service dates, whichever is later. The second achievement date occurred on May 11, 2021, as certified by the leadership and compensation committee of QMCO, resulting in 37,500 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest on July 1, 2023, subject to continued employment. These shares are reflected on Table I, and no units remain that are subject to these performance-based and time-based vesting conditions.

SEC source: 0000709283-21-000007 · wf-form4_161584263658780.xml · derivative · entry 3

DODSON J MICHAEL · CIK 0001231559 · Senior Vice President, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 37,500

Underlying: Common Stock · 37,500 shares

Expires 2025-07-01

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Performance-Based Restricted Stock Units were previously reported on July 2, 2020, which vest in two equal components upon the later of achievement of specified levels of the average closing prices of a share of QMCO common stock during any hundred (100) calendar day period, and upon specified service dates, whichever is later. The first achievement date occurred on March 11, 2021, as certified by the leadership and compensation committee of QMCO, resulting in 37,500 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest on January 1, 2022, subject to continued employment. These shares are reflected on Table I, and 37,500 units remaining subject to these performance-based and time-based vesting conditions.

F2 · derivative.exercise_date: Performance-Based Restricted Stock Units were previously reported on July 2, 2020, which vest in two equal components upon the later of achievement of specified levels of the average closing prices of a share of QMCO common stock during any hundred (100) calendar day period, and upon specified service dates, whichever is later. The first achievement date occurred on March 11, 2021, as certified by the leadership and compensation committee of QMCO, resulting in 37,500 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest on January 1, 2022, subject to continued employment. These shares are reflected on Table I, and 37,500 units remaining subject to these performance-based and time-based vesting conditions.

SEC source: 0000709283-21-000007 · wf-form4_161584263658780.xml · derivative · entry 2

DODSON J MICHAEL · CIK 0001231559 · Senior Vice President, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 80,000

Underlying: Common Stock · 80,000 shares

Expires 2029-09-06

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Performance-Based Restricted Stock Units were previously reported on September 10, 2019, which vest in three equal components upon the later of achievement of specified levels of the average closing prices of a share of QMCO common stock during any hundred (100) calendar day period, and upon specified service dates, whichever is later. The second achievement date occurred on March 11, 2021, as certified by the leadership and compensation committee of QMCO, resulting in 80,000 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest on September 5, 2021, subject to continued employment. These shares are reflected on Table I, and 80,000 units remaining subject to these performance-based and time-based vesting conditions.

F1 · derivative.exercise_date: Performance-Based Restricted Stock Units were previously reported on September 10, 2019, which vest in three equal components upon the later of achievement of specified levels of the average closing prices of a share of QMCO common stock during any hundred (100) calendar day period, and upon specified service dates, whichever is later. The second achievement date occurred on March 11, 2021, as certified by the leadership and compensation committee of QMCO, resulting in 80,000 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest on September 5, 2021, subject to continued employment. These shares are reflected on Table I, and 80,000 units remaining subject to these performance-based and time-based vesting conditions.

SEC source: 0000709283-21-000007 · wf-form4_161584263658780.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · Senior Vice President, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 661,370

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · security: Performance-Based Restricted Stock Units were previously reported on September 10, 2019, which vest in three equal components upon the later of achievement of specified levels of the average closing prices of a share of QMCO common stock during any hundred (100) calendar day period, and upon specified service dates, whichever is later. The second achievement date occurred on March 11, 2021, as certified by the leadership and compensation committee of QMCO, resulting in 80,000 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest on September 5, 2021, subject to continued employment. These shares are reflected on Table I, and 80,000 units remaining subject to these performance-based and time-based vesting conditions.

F2 · security: Performance-Based Restricted Stock Units were previously reported on July 2, 2020, which vest in two equal components upon the later of achievement of specified levels of the average closing prices of a share of QMCO common stock during any hundred (100) calendar day period, and upon specified service dates, whichever is later. The first achievement date occurred on March 11, 2021, as certified by the leadership and compensation committee of QMCO, resulting in 37,500 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest on January 1, 2022, subject to continued employment. These shares are reflected on Table I, and 37,500 units remaining subject to these performance-based and time-based vesting conditions.

F3 · balance_after: Includes 4,715 shares acquired under Quantum Corporation's Employee Stock Purchase Plan on February 5, 2021.

SEC source: 0000709283-20-000047 · wf-form4_160937574208830.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · Senior Vice President, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 539,155

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 stock units granted on September 6, 2019.

F2 · price: This is the price of the shares sold, $5.6326 per share. Upon request by the Commission staff, Quantum Corporation, or a security holder of Quantum Corporation, the Reporting Person will provide full information regarding the number of shares sold at this price as set forth in this Form 4.

SEC source: 0000709283-20-000028 · wf-form4_159906925670784.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · Senior Vice President, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 573,154

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 June 1, 2018.

SEC source: 0000709283-20-000023 · wf-form4_159847333162546.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · Senior Vice President, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 586,286

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 stock units granted on June 1, 2018.

F2 · price: This is the weighted average price of the shares sold, which ranged from $5.3798 to $5.52 per share. Upon request by the Commission staff, Quantum Corporation, or a security holder of the Quantum Corporation, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

F3 · balance_after: Includes 3,975 shares acquired under Quantum Corporation's Employee Stock Purchase Plan on August 5, 2020.

SEC source: 0000709283-20-000018 · wf-form4_159372182578185.xml · derivative · entry 2

DODSON J MICHAEL · CIK 0001231559 · Senior Vice President, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 75,000 shares

Expires 2025-07-01

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 levels of the average closing prices of a share of QMCO common stock during any one hundred (100) calendar day period occurring between July 1, 2020 and July 1, 2025. Vesting is subject to continued employment with QMCO through the later of the achievement date or service vesting date, which occurs in two equal installments on January 1, 2022 and July 1, 2023.

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 levels of the average closing prices of a share of QMCO common stock during any one hundred (100) calendar day period occurring between July 1, 2020 and July 1, 2025. Vesting is subject to continued employment with QMCO through the later of the achievement date or service vesting date, which occurs in two equal installments on January 1, 2022 and July 1, 2023.

SEC source: 0000709283-20-000018 · wf-form4_159372182578185.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · Senior Vice President, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 594,577

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, 2021, July 1, 2022 and July 1, 2023.

SEC source: 0001580808-20-000053 · wf-form4_159070366030366.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 37,245

F1 · shares: Each share is represented by a Restricted Stock Unit ("RSU"). The RSUs will vest on the earlier of the first anniversary of the grant date or the date of the Issuer's next Annual Meeting, subject to the Reporting Person's continued service as of such date.

SEC source: 0001628280-20-003828 · wf-form4_158465020592549.xml · derivative · entry 3

DODSON J MICHAEL · CIK 0001231559 · Senior Vice President, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 160,000

Underlying: Common Stock · 80,000 shares

Expires 2029-09-06

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Performance-Based Restricted Stock Units were previously reported on September 10, 2019, which vest in three equal components upon the later of achievement of specified levels of the average closing prices of a share of QMCO common stock during any hundred (100) calendar day period, and upon specified service dates, whichever is later. The first performance achievement date occurred on March 17, 2020, as certified by the leadership and compensation committee of QMCO, resulting in 80,000 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest on September 5, 2020 subject to continued employment. These shares are reflected on Table I, and 160,000 units remaining subject to these performance-based and time-based vesting conditions

F2 · derivative.exercise_date: Performance-Based Restricted Stock Units were previously reported on September 10, 2019, which vest in three equal components upon the later of achievement of specified levels of the average closing prices of a share of QMCO common stock during any hundred (100) calendar day period, and upon specified service dates, whichever is later. The first performance achievement date occurred on March 17, 2020, as certified by the leadership and compensation committee of QMCO, resulting in 80,000 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest on September 5, 2020 subject to continued employment. These shares are reflected on Table I, and 160,000 units remaining subject to these performance-based and time-based vesting conditions

SEC source: 0001628280-20-003828 · wf-form4_158465020592549.xml · derivative · entry 2

DODSON J MICHAEL · CIK 0001231559 · Senior Vice President, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 41,666 shares

Expires 2022-06-01

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Performance-Based Restricted Stock Units were previously reported on August 27, 2019, which vest in three equal components upon the later of achievement of specified levels of the average closing prices of a share of QMCO common stock during any sixty (60) day trading period between June 1, 2018 and May 31, 2022, and upon specified service dates, whichever is later. The third performance achievement date occurred on March 17, 2020, as certified by the leadership and compensation committee of QMCO, resulting in 41,666 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest on May 31, 2021, subject to continued employment. These shares are reflected on Table I, and no units remain that are subject to these performance-based and time-based vesting conditions.

F1 · derivative.exercise_date: Performance-Based Restricted Stock Units were previously reported on August 27, 2019, which vest in three equal components upon the later of achievement of specified levels of the average closing prices of a share of QMCO common stock during any sixty (60) day trading period between June 1, 2018 and May 31, 2022, and upon specified service dates, whichever is later. The third performance achievement date occurred on March 17, 2020, as certified by the leadership and compensation committee of QMCO, resulting in 41,666 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest on May 31, 2021, subject to continued employment. These shares are reflected on Table I, and no units remain that are subject to these performance-based and time-based vesting conditions.

SEC source: 0001628280-20-003828 · wf-form4_158465020592549.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · Senior Vice President, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 444,577

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · security: Performance-Based Restricted Stock Units were previously reported on August 27, 2019, which vest in three equal components upon the later of achievement of specified levels of the average closing prices of a share of QMCO common stock during any sixty (60) day trading period between June 1, 2018 and May 31, 2022, and upon specified service dates, whichever is later. The third performance achievement date occurred on March 17, 2020, as certified by the leadership and compensation committee of QMCO, resulting in 41,666 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest on May 31, 2021, subject to continued employment. These shares are reflected on Table I, and no units remain that are subject to these performance-based and time-based vesting conditions.

F2 · security: Performance-Based Restricted Stock Units were previously reported on September 10, 2019, which vest in three equal components upon the later of achievement of specified levels of the average closing prices of a share of QMCO common stock during any hundred (100) calendar day period, and upon specified service dates, whichever is later. The first performance achievement date occurred on March 17, 2020, as certified by the leadership and compensation committee of QMCO, resulting in 80,000 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest on September 5, 2020 subject to continued employment. These shares are reflected on Table I, and 160,000 units remaining subject to these performance-based and time-based vesting conditions

SEC source: 0001209191-20-007241 · doc4.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 31,779

F1 · shares: Each share is represented by a Restricted Stock Unit ("RSU"). One-third (1/3) of the total RSUs will vest on each of the first three (3) anniversaries of the Vesting Commencement Date (2/4/2020), provided that the Reporting Person continues to serve through each vesting date.

SEC source: 0000899243-19-027359 · doc4.xml · derivative · entry 2

DODSON J MICHAEL · CIK 0001231559 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 41,666

Underlying: Common Stock · 41,667 shares

Expires 2029-11-13

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Performance-Based Restricted Stock Units were previously reported on August 27, 2019, which vest in three equal components upon the later of achievement of specified levels of the average closing prices of a share of QMCO common stock during any sixty (60) day trading period between June 1, 2018 and May 31, 2022, and upon specified service dates, whichever is later. The second performance achievement date occurred on November 13, 2019, as certified by the leadership and compensation committee of QMCO, resulting in 41,667 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest on June 1, 2020, subject to continued employment. These shares are reflected on Table I, and 41,666 units remaining subject to performance-based and time-based vesting conditions.

F1 · derivative.exercise_date: Performance-Based Restricted Stock Units were previously reported on August 27, 2019, which vest in three equal components upon the later of achievement of specified levels of the average closing prices of a share of QMCO common stock during any sixty (60) day trading period between June 1, 2018 and May 31, 2022, and upon specified service dates, whichever is later. The second performance achievement date occurred on November 13, 2019, as certified by the leadership and compensation committee of QMCO, resulting in 41,667 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest on June 1, 2020, subject to continued employment. These shares are reflected on Table I, and 41,666 units remaining subject to performance-based and time-based vesting conditions.

SEC source: 0000899243-19-027359 · doc4.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 322,911

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · security: Performance-Based Restricted Stock Units were previously reported on August 27, 2019, which vest in three equal components upon the later of achievement of specified levels of the average closing prices of a share of QMCO common stock during any sixty (60) day trading period between June 1, 2018 and May 31, 2022, and upon specified service dates, whichever is later. The second performance achievement date occurred on November 13, 2019, as certified by the leadership and compensation committee of QMCO, resulting in 41,667 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest on June 1, 2020, subject to continued employment. These shares are reflected on Table I, and 41,666 units remaining subject to performance-based and time-based vesting conditions.

SEC source: 0000899243-19-025103 · doc4.xml · derivative · entry 2

DODSON J MICHAEL · CIK 0001231559 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 83,333

Underlying: Common Stock · 41,667 shares

Expires 2029-10-02

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Performance-Based Restricted Stock Units that were previously reported on August 27, 2019, which vest in three equal components upon the later of achievement of specified levels of the average closing prices of a share of QMCO common stock during any sixty (60) day trading period between June 1, 2018 and May 31, 2022, and upon specified service dates, whichever is later. The first achievement date occurred on October 2, 2019, as certified by the leadership and compensation committee of QMCO, resulting in 41,667 units vesting, as reflected on Table I, and 83,333 units remaining subject to performance-based and time-based vesting conditions.

F1 · derivative.exercise_date: Performance-Based Restricted Stock Units that were previously reported on August 27, 2019, which vest in three equal components upon the later of achievement of specified levels of the average closing prices of a share of QMCO common stock during any sixty (60) day trading period between June 1, 2018 and May 31, 2022, and upon specified service dates, whichever is later. The first achievement date occurred on October 2, 2019, as certified by the leadership and compensation committee of QMCO, resulting in 41,667 units vesting, as reflected on Table I, and 83,333 units remaining subject to performance-based and time-based vesting conditions.

SEC source: 0000899243-19-025103 · doc4.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 281,244

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · security: Performance-Based Restricted Stock Units that were previously reported on August 27, 2019, which vest in three equal components upon the later of achievement of specified levels of the average closing prices of a share of QMCO common stock during any sixty (60) day trading period between June 1, 2018 and May 31, 2022, and upon specified service dates, whichever is later. The first achievement date occurred on October 2, 2019, as certified by the leadership and compensation committee of QMCO, resulting in 41,667 units vesting, as reflected on Table I, and 83,333 units remaining subject to performance-based and time-based vesting conditions.

SEC source: 0000899243-19-023273 · doc4.xml · derivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 240,000

Underlying: Common Stock · 240,000 shares

Expires 2029-09-06

F1 · derivative.exercise_price: Grant of Performance-Based Restricted Stock Units, each of which represents a contingent right to receive one share of common stock of QMCO, with vesting subject to the achievement of specified levels of the average closing prices of a share of QMCO common stock during any hundred (100) day trading period. Vesting is subject to continued employment with the Company through the later of the achievement date or service vesting date, which occurs in three equal annual installments on September 5, 2020, September 5, 2021 and September 5, 2022.

F1 · derivative.exercise_date: Grant of Performance-Based Restricted Stock Units, each of which represents a contingent right to receive one share of common stock of QMCO, with vesting subject to the achievement of specified levels of the average closing prices of a share of QMCO common stock during any hundred (100) day trading period. Vesting is subject to continued employment with the Company through the later of the achievement date or service vesting date, which occurs in three equal annual installments on September 5, 2020, September 5, 2021 and September 5, 2022.

SEC source: 0000899243-19-022521 · doc4.xml · derivative · entry 3

DODSON J MICHAEL · CIK 0001231559 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 125,000

Underlying: Common Stock · 125,000 shares

Expires 2029-08-23

F3 · derivative.exercise_price: Grant of Performance-Based Restricted Stock Units, each of which represents a contingent right to receive one share of common stock of QMCO, with vesting subject to the achievement of specified levels of the average closing prices of a share of QMCO common stock during any sixty (60) day trading period on a National Exchange occurring between June 1, 2018 and May 31, 2022. Vesting is subject to continued employment with the Company through the later of the achievement date or service vesting date, which occurs in three equal annual installments on August 23, 2019, June 1, 2020 and June 1, 2021.

F3 · derivative.exercise_date: Grant of Performance-Based Restricted Stock Units, each of which represents a contingent right to receive one share of common stock of QMCO, with vesting subject to the achievement of specified levels of the average closing prices of a share of QMCO common stock during any sixty (60) day trading period on a National Exchange occurring between June 1, 2018 and May 31, 2022. Vesting is subject to continued employment with the Company through the later of the achievement date or service vesting date, which occurs in three equal annual installments on August 23, 2019, June 1, 2020 and June 1, 2021.

SEC source: 0000899243-19-022521 · doc4.xml · nonDerivative · entry 2

DODSON J MICHAEL · CIK 0001231559 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 239,577

F2 · security: Grant of Restricted Stock Units ("RSUs"), each of which represents a contingent right to receive one share of common stock of QMCO. The RSUs were approved in connection with the reporting person's commencement of employment in 2018, although the grant was effective on August 23, 2019, the first business day on which QMCO became current with respect to its filings under the Exchange Act of 1934. The RSUs vest in three equal annual installments beginning on beginning on June 1, 2019; although the first vesting date was deferred until August 23, 2019. The remaining shares will vest in equal installments on June 1, 2020 and June 1, 2021.

SEC source: 0000899243-19-022521 · doc4.xml · nonDerivative · entry 1

DODSON J MICHAEL · CIK 0001231559 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 114,577

F1 · security: Grant of Restricted Stock Units ("RSUs"), each of which represents a contingent right to receive one share of common stock of QMCO. The RSUs were approved in connection with the reporting person's commencement of employment in 2018, although the grant was effective on August 23, 2019, the first business day on which QMCO became current with respect to its filings under the Exchange Act of 1934. 14,577 RSUs were fully vested when the grant became effective on August 23, 2019.

SEC source: 0000899243-19-021612 · doc4.xml · nonDerivative · entry 8

DODSON J MICHAEL · CIK 0001231559 · SVP, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 100,000