QUANTUM CORP /DE/ (QMCO) - Dilution Analysis

Visualizing historical and potential share dilution over time

Dilution Analysis

High Risk
Significant dilution risk
Last updated: November 13, 2025

Risk Assessment Details

Potential Dilution: 223.1% of current shares
Recent Dilution: 153.42% (2 years)
Historical Dilution Factor: significant recent dilution
Outstanding Shares
13M
Potential Supply
30M
Additional shares possible
Splits
None
Past 2 years

Summary

QMCO currently has 13.3M outstanding shares. with significant dilution risk as 29.7M authorized shares could dilute existing holders by 223.1%. The company has significantly diluted shareholders by 153.42% over the past 2 years, indicating aggressive capital raising.

Share Structure Timeline

Outstanding Shares
Total Supply

Historical Data Points

Date Event Outstanding Supply
Nov 13, 2025

10-Q filing | 13.3M shares outstanding

13M 30M
Sep 26, 2025

POS AM filing: This POS AM filing from Quantum Corporation relates to an offering of common stock by a selling stockholder, with the company potentially receiving up to $200 million in gross proceeds under a purchase agreement.

13M 30M
Sep 11, 2025

10-Q filing | 13.3M shares outstanding

13M 47M
Aug 26, 2025

10-K filing | 13.3M shares outstanding

13M 47M
Apr 18, 2025

S-3 filing: Quantum Corporation files an S-3 to offer up to 17,550,626 shares of common stock to a Selling Stockholder under a Purchase Agreement, with potential proceeds of up to $200.0 million for working capital and general corporate purposes, including debt repayment.

6.9M 54M
Feb 12, 2025

10-Q filing | 5.8M shares outstanding

5.8M 37M
Feb 06, 2025

S-1/A filing: This S-1/A filing relates to the resale of up to 2,302,733 shares of common stock by YA II PN, Ltd., which Quantum may issue and sell to them under a standby equity purchase agreement for up to $200,000,000.

5.8M 37M
Jan 27, 2025

8-K filing: Quantum Corporation entered into a Standby Equity Purchase Agreement with YA II PN, Ltd. (Yorkville) on January 25, 2025, allowing the Company to sell shares of its common stock to Yorkville under certain conditions, and also entered into amendments to its Term Loan Credit Agreement and Revolving Credit Agreement.

4.8M 38M
Jan 27, 2025

S-1 filing: This S-1 filing relates to the resale of up to 2,302,733 shares of common stock by YA II PN, Ltd., consisting of 42,158 Commitment Shares and up to 2,260,575 shares of common stock that Quantum Corporation may elect to issue and sell to the Selling Stockholder under a Purchase Agreement for up to $200,000,000.

5.8M 37M
Nov 14, 2024

10-Q filing | 4.8M shares outstanding

4.8M 36M
Sep 06, 2024

10-Q filing | 4.8M shares outstanding

4.8M 36M
Sep 06, 2024

10-Q filing | 4.8M shares outstanding

4.8M 36M
Aug 14, 2024

10-Q filing | 95.9M shares outstanding

96M 0
Jun 28, 2024

10-K filing | 95.1M shares outstanding

95M 0
Aug 08, 2023

10-Q filing | 93.7M shares outstanding

94M 0
Jun 06, 2023

10-K filing | 90.3M shares outstanding

90M 0
Jun 06, 2023

8-K filing: Quantum Corporation entered into an amendment to its Term Loan Credit Agreement and issued a warrant to purchase 1,250,000 shares of common stock at an exercise price of $1.00 per share in connection with the Term Loan Amendment.

110M 0
Feb 02, 2023

10-Q filing | 105.2M shares outstanding

110M 0
Dec 29, 2022

S-3 filing: This is an S-3 filing related to a shelf registration for the potential resale of common stock by selling stockholders, possibly through underwriters, dealers, or agents, including at-the-market offerings.

100M 0
Nov 02, 2022

10-Q filing | 103.8M shares outstanding

100M 0
Aug 04, 2022

10-Q filing | 102.7M shares outstanding

100M 0
Jun 08, 2022

10-K filing | 101.8M shares outstanding

100M 0
Apr 27, 2022

8-K filing: Quantum Corporation closed its rights offering and issued 30,000,000 shares of common stock for net proceeds of approximately $66.1 million. ($66.1M proceeds)

59M 0
Feb 09, 2022

10-Q filing | 59.5M shares outstanding

59M 0
Dec 17, 2021

S-3 filing: This is an S-3 filing for a shelf offering of common stock by selling stockholders, potentially involving underwriters, dealers, or agents for resale.

59M 0
Nov 03, 2021

10-Q filing | 58.6M shares outstanding

59M 0
Aug 19, 2021

S-3 filing: This is an S-3 filing for a shelf offering of common stock by a selling stockholder, who may use underwriters, dealers, agents, or direct sales.

57M 0
Aug 19, 2021

S-3/A filing: This S-3/A filing describes a potential offering of common stock by a selling stockholder, who may sell the securities directly, through underwriters, dealers, or agents, including at-the-market offerings.

57M 0
Aug 09, 2021

10-Q filing | 57.1M shares outstanding

57M 0
Jul 22, 2021

8-K filing: Quantum Corporation entered into an Asset Purchase Agreement with PV3 (an ABC) LLC, as assignee for the benefit of Pivot3, Inc., to purchase assets related to Seller's video surveillance business for $5.0 million in cash and 459,720 shares of Quantum Common Stock, consummating the transaction on July 20, 2021.

57M 0
May 26, 2021

10-K filing | 57.1M shares outstanding

57M 0
Feb 01, 2021

S-3 filing: This S-3 filing describes a potential offering of common stock by selling stockholders, including possible at-the-market offerings and sales through underwriters or agents.

41M 0
Jan 27, 2021

10-Q filing | 40.9M shares outstanding

41M 0
Dec 04, 2020

S-3/A filing: S-3/A filing for Quantum Corporation including an At the Market Issuance Sales Agreement with B. Riley Securities, Inc.

41M 0
Oct 28, 2020

10-Q filing | 40.7M shares outstanding

41M 0
Aug 05, 2020

10-Q filing | 39.9M shares outstanding

40M 0
Jun 24, 2020

10-K filing | 39.9M shares outstanding

40M 0
Jan 29, 2020

10-Q filing | 39.9M shares outstanding

40M 0
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