PLUG POWER INC (PLUG) - Dilution Analysis

Visualizing historical and potential share dilution over time

Dilution Analysis

Medium Risk
Moderate dilution risk
Last updated: May 11, 2026

Risk Assessment Details

Potential Dilution: 0.0% of current shares
Recent Dilution: 70.77% (2 years)
Historical Dilution Factor: significant recent dilution
Outstanding Shares
1.4B
Potential Supply
0
Additional shares possible
Splits
None
Past 2 years

Summary

PLUG currently has 1.39B outstanding shares. with minimal authorized share overhang for future dilution. The company has significantly diluted shareholders by 70.77% over the past 2 years, indicating aggressive capital raising.

Share Structure Timeline

Outstanding Shares
Total Supply

Historical Data Points

Date Event Outstanding Supply
May 11, 2026

10-Q filing | 1389.7M shares outstanding

1.4B 0
Jan 06, 2026

8-K filing: Walmart terminated the Transaction Agreement with Plug Power Inc., forfeiting its warrant to purchase 55,286,696 shares of the company's common stock, eliminating potential future dilution of up to 42,192,479 shares.

1.4B 0
Nov 10, 2025

10-Q filing | 1391.4M shares outstanding

1.4B 0
Oct 08, 2025

8-K filing: Plug Power Inc. entered into a Warrant Inducement Agreement with an investor to amend existing warrants and issue new warrants to purchase up to 185,430,464 shares of Common Stock, with expected gross proceeds of approximately $371.0 million. ($371.0M proceeds)

1.1B 0
Aug 11, 2025

10-Q filing | 1126.6M shares outstanding

1.1B 0
Jul 09, 2025

8-K filing: Plug Power Inc. issued a warrant to YA II PN, Ltd. to purchase 31,500,000 shares of common stock at an exercise price of $1.37, exercisable on or after the date of issuance and expiring on July 10, 2028.

1.1B 0
May 12, 2025

10-Q filing | 1078.3M shares outstanding

1.1B 0
Apr 28, 2025

8-K filing: Plug Power Inc. entered into a Secured Debenture Purchase Agreement with YA II PN, Ltd., committing to sell secured debentures in three tranches, with the initial tranche of $210,000,000 expected to close on or about May 2, 2025, and the Company also agreed to issue a warrant to the Buyer to purchase 31,500,000 shares of common stock.

930M 0
Mar 20, 2025

8-K filing: Plug Power Inc. entered into an underwriting agreement to issue and sell 46,500,000 shares of common stock, pre-funded warrants to purchase 138,930,464 shares of Common Stock, and accompanying warrants to purchase 185,430,464 shares of Common Stock for net proceeds of approximately $267.0 million, excluding proceeds from warrant exercises. ($209.65M proceeds)

930M 0
Mar 03, 2025

10-K filing | 925.2M shares outstanding

930M 0
Nov 12, 2024

10-Q filing | 858.4M shares outstanding

860M 0
Nov 12, 2024

8-K filing: Plug Power Inc. entered into a Debenture Purchase Agreement with YA II PN, Ltd., agreeing to sell and issue an unsecured convertible debenture for $190.0 million, potentially resulting in the issuance of up to 182,148,267 shares of common stock upon conversion. ($190.0M proceeds)

880M 0
Nov 12, 2024

8-K filing: Plug Power Inc. filed a prospectus supplement relating to the potential resale of up to 125,000,000 shares of the Company's common stock issuable in connection with an unsecured convertible debenture in the aggregate principal amount of $200.0 million. The convertible debenture will be issued to the selling stockholder in a private placement for $190.0 million. ($190.0M proceeds)

880M 0
Nov 08, 2024

8-K filing: Plug Power Inc. entered into Amendment No. 2 to the At Market Issuance Sales Agreement with B. Riley Securities, Inc. to increase the aggregate gross sales price of shares of Common Stock available for issuance by approximately $375,171,995 to $1 billion and to provide the company the right to direct B. Riley to act on a principal basis and purchase from the company up to $11,000,000 through February 7, 2025. ($677.25M proceeds)

880M 0
Aug 08, 2024

10-Q filing | 879.6M shares outstanding

880M 0
Jul 22, 2024

8-K filing: Plug Power Inc. completed an offering of 78,740,157 shares of common stock at a price of $2.54 per share, resulting in net proceeds of approximately $190.6 million, with an option for the underwriters to purchase an additional 11,811,023 shares. ($190.6M proceeds)

740M 0
May 24, 2024

8-K filing: Plug Power Inc. filed a prospectus supplement relating to the resale by certain selling stockholders of up to 3,461,371 shares of the Company's common stock issuable upon exercise of warrants issued to the selling stockholders pursuant to the Agreement and Plan of Merger.

740M 0
May 09, 2024

10-Q filing | 742.6M shares outstanding

740M 0
Mar 26, 2024

8-K filing: Plug Power Inc. issued $140,396,000 in aggregate principal amount of its 7.00% Convertible Senior Notes due 2026 in exchange for $138,816,000 in aggregate principal amount of the Company's 3.75% Convertible Senior Notes due 2025.

680M 0
Mar 13, 2024

8-K filing: Plug Power Inc. will exchange $138,816,000 in aggregate principal amount of its outstanding 3.75% Convertible Senior Notes due 2025 for $140,396,000 in aggregate principal amount of the Company's new 7.00% Convertible Senior Notes due 2026.

680M 0
Feb 29, 2024

10-K filing | 684.3M shares outstanding

680M 0
Feb 23, 2024

8-K filing: Plug Power Inc. amended its At Market Issuance Sales Agreement with B. Riley Securities to increase the aggregate offering price of common stock available for issuance by $302,073,006 to $1 billion and to increase the number of shares that B. Riley can purchase as principal. ($302.07M proceeds)

600M 0
Nov 09, 2023

10-Q filing | 599.5M shares outstanding

600M 0
Aug 09, 2023

10-Q filing | 598.1M shares outstanding

600M 0
May 09, 2023

10-Q filing | 589.2M shares outstanding

590M 0
Mar 01, 2023

10-K filing | 579.7M shares outstanding

580M 0
Nov 08, 2022

10-Q filing | 578.0M shares outstanding

580M 0
Aug 25, 2022

8-K filing: Plug Power Inc. issued a warrant to Amazon.com NV Investment Holdings LLC, a subsidiary of Amazon, to acquire up to 16,000,000 shares of the Company's common stock, with 1,000,000 shares vesting immediately and the remainder vesting over 7 years based on payments from Amazon.

580M 0
Aug 09, 2022

10-Q filing | 578.0M shares outstanding

580M 0
May 09, 2022

10-Q filing | 577.9M shares outstanding

580M 0
Mar 01, 2022

10-K filing | 558.2M shares outstanding

560M 0
Nov 09, 2021

10-Q filing | 576.4M shares outstanding

580M 0
Aug 05, 2021

10-Q filing | 574.4M shares outstanding

570M 0
Jun 22, 2021

10-Q filing | 568.3M shares outstanding

570M 0
May 14, 2021

10-K filing | 568.3M shares outstanding

570M 0
Feb 25, 2021

8-K filing: Plug Power Inc. consummated the sale of 54,966,188 shares of common stock to Grove Energy Capital LLC at a purchase price of $29.2893 per share for an aggregate purchase price of approximately $1.6 billion. ($1600.0M proceeds)

470M 0
Jan 28, 2021

8-K filing: Plug Power Inc. entered into an underwriting agreement to issue and sell 28,000,000 shares of its common stock at a public offering price of $65.00 per share, with the offering expected to close on or about January 29, 2021. ($1820.0M proceeds)

470M 0
Jan 07, 2021

8-K filing: Plug Power Inc. entered into a Stock Purchase Agreement to sell 51,428,119 shares of common stock to Grove Energy Capital LLC at a purchase price of $29.2893 per share, resulting in gross proceeds of approximately $1.5 billion. ($1500.0M proceeds)

470M 0
Jan 05, 2021

8-K filing: On December 31, 2020, Plug Power Inc. waived the remaining vesting conditions under a warrant held by Amazon, resulting in the vesting of 20,368,784 shares of the Company's common stock.

420M 0
Nov 18, 2020

8-K filing: Plug Power Inc. entered into an underwriting agreement to issue and sell 38,000,000 shares of its common stock at a public offering price of $22.25 per share. ($846.5M proceeds)

420M 0
Nov 09, 2020

10-Q filing | 415.6M shares outstanding

420M 0
Aug 14, 2020

8-K filing: Plug Power Inc. sold 35,276,250 shares of common stock to Underwriters at $10.25 per share, with net proceeds of approximately $344.7 million, for working capital and other general corporate purposes. The offering closed on August 14, 2020. ($361.58M proceeds)

370M 0
Aug 10, 2020

10-Q filing | 365.8M shares outstanding

370M 0
Jun 23, 2020

8-K filing: Plug Power issued 4,430,076 shares of common stock in connection with the UHG Merger and 3,458,254 shares of common stock in connection with the Giner ELX Merger, both exempt from registration pursuant to Section 4(a)(2) of the Securities Act of 1933 and Regulation D. ($35.6M proceeds)

320M 0
May 08, 2020

10-Q filing | 324.3M shares outstanding

320M 0
Apr 08, 2020

8-K filing: Plug Power Inc. filed a prospectus supplement to register for resale up to 1,770,135 shares of its common stock that were issued to a selling stockholder.

320M 0
Mar 10, 2020

10-K filing | 321.3M shares outstanding

320M 0
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