GT Biopharma, Inc. (GTBP) - Dilution Analysis

Visualizing historical and potential share dilution over time

Dilution Analysis

High Risk
Significant dilution risk
Last updated: May 15, 2026

Risk Assessment Details

Potential Dilution: 527.24% of current shares
Recent Dilution: 552.07% (2 years)
Historical Dilution Factor: significant recent dilution
Outstanding Shares
36M
Potential Supply
190M
Additional shares possible
Splits
None
Past 2 years

Summary

GTBP currently has 36.1M outstanding shares. with significant dilution risk as 190M authorized shares could dilute existing holders by 527.2%. The company has significantly diluted shareholders by 552.07% over the past 2 years, indicating aggressive capital raising.

Share Structure Timeline

Outstanding Shares
Total Supply

Historical Data Points

Date Event Outstanding Supply
May 15, 2026

10-Q filing | 36.1M shares outstanding

36M 190M
Nov 14, 2025

10-Q filing | 10.6M shares outstanding

11M 220M
Oct 24, 2025

S-1 filing: This prospectus relates to the offering from time to time by the selling stockholders named in this prospectus of up to an aggregate 14,589,546 shares of common stock of GT Biopharma, Inc.

11M 220M
Aug 14, 2025

10-Q filing | 3.6M shares outstanding

3.6M 210M
Jun 27, 2025

S-1/A filing: This prospectus relates to the offering from time to time by the selling stockholders of up to an aggregate 54,423,826 shares of common stock.

3.1M 210M
Jun 11, 2025

S-1 filing: This S-1 filing registers 120,553,632 shares of common stock for offering by selling stockholders, including shares issuable upon conversion of preferred stock and exercise of warrants, and shares that may be sold to Facility Investors.

3.1M 270M
May 27, 2025

8-K filing: GT Biopharma, Inc. amended its Securities Purchase Agreement to increase the number of shares of Series L 10% Convertible Preferred Stock issuable to 6,612 shares, with accompanying warrants, for an aggregate purchase price of $5,950,000.00 and also filed a Certificate of Increase increasing the shares of Series L 10% Convertible Preferred Stock from 28,056 shares to 30,630 shares. ($5.95M proceeds)

2.3M 150M
May 15, 2025

10-Q filing | 2.3M shares outstanding

2.3M 150M
May 13, 2025

8-K filing: GT Biopharma, Inc. entered into a Securities Purchase Agreement for the issuance and sale of Series L 10% Convertible Preferred Stock, warrants to purchase common stock, and vesting warrants, with an aggregate stated value of $6,055,555.56, for an aggregate purchase price of $5,450,000.00. ($5.45M proceeds)

2.2M 150M
Apr 04, 2025

8-K filing: GT Biopharma, Inc. issued a pre-funded warrant to Cytovance Biologics, Inc. to purchase up to 326,251 shares of Common Stock in partial consideration for services provided. ($0.85M proceeds)

2.2M 150M
Mar 06, 2025

S-3 filing: This prospectus relates to the resale of up to 625,283 shares of common stock issuable upon the exercise of warrants.

2.2M 150M
Feb 26, 2025

8-K filing: GT Biopharma, Inc. entered into warrant exercise inducement offer letter agreements with certain holders of existing warrants to purchase 302,069 shares of common stock at a reduced exercise price of $2.27 per share, in exchange for the issuance of new Series A and Series B Inducement Warrants to purchase up to 604,138 shares of common stock at an exercise price of $2.02 per share, resulting in gross proceeds of approximately $0.7 million. ($0.0M proceeds)

2.2M 150M
Feb 24, 2025

RW filing: GT Biopharma, Inc. is withdrawing its Registration Statement on Form S-1 initially filed on December 23, 2024, because it no longer plans to consummate the offering described in the Registration Statement.

2.2M 150M
Feb 21, 2025

10-K filing | 2.2M shares outstanding

2.2M 160M
Feb 07, 2025

S-1/A filing: This S-1/A filing is for a best efforts public offering of shares of common stock, common warrants, and pre-funded warrants.

2.2M 160M
Jan 27, 2025

S-1/A filing: This is a reasonable best efforts public offering of shares of common stock, common warrants to purchase shares of common stock, and pre-funded warrants.

2.2M 160M
Dec 23, 2024

S-1 filing: This S-1 filing describes a best efforts public offering of common stock, pre-funded warrants, common warrants, and placement agent warrants, with Roth Capital Partners, LLC acting as the exclusive placement agent.

2.2M 150M
Nov 14, 2024

10-Q filing | 2.2M shares outstanding

2.2M 150M
Aug 14, 2024

10-Q filing | 2.2M shares outstanding

2.2M 150M
Jun 27, 2024

S-1/A filing: This S-1/A filing registers the offer and resale of up to 740,000 shares of common stock issuable upon the exercise of warrants with an exercise price of $4.35, issued in a concurrent private placement on May 21, 2024. The company will not receive any proceeds from the sale of these shares.

1.4M 160M
Jun 20, 2024

S-1 filing: This S-1 filing registers the offer and resale of up to 740,000 shares of common stock by selling shareholders, issuable upon the exercise of warrants issued in a concurrent private placement.

1.4M 160M
May 23, 2024

8-K filing: GT Biopharma, Inc. entered into a purchase agreement with institutional investors to issue and sell 740,000 shares of common stock in a registered direct offering at $4.35 per share and agreed to issue warrants to purchase one share of common stock for each share purchased in the offering. ($3.22M proceeds)

1.4M 150M
May 15, 2024

10-Q filing | 1.4M shares outstanding

1.4M 150M
Mar 26, 2024

10-K filing | 1.3M shares outstanding

1.3M 150M
Nov 01, 2023

10-Q filing | 41.0M shares outstanding

41M 110M
Aug 07, 2023

10-Q filing | 40.2M shares outstanding

40M 120M
May 15, 2023

10-Q filing | 39.1M shares outstanding

39M 120M
Mar 30, 2023

10-K filing | 36.8M shares outstanding

37M 120M
Jan 04, 2023

8-K filing: GT Biopharma, Inc. completed a registered direct offering of 3,600,000 shares of common stock, pre-funded warrants to purchase up to 2,900,000 shares, and warrants to purchase up to 6,500,000 shares at a combined price of $1.00 per share/warrant or $0.9999 per pre-funded warrant/warrant, resulting in gross proceeds of $6.5 million. ($6.5M proceeds)

31M 120M
Oct 31, 2022

10-Q filing | 31.4M shares outstanding

31M 120M
Oct 13, 2022

S-3 filing: GT Biopharma files an S-3 registration statement to offer up to $150,000,000 in common stock and/or warrants or rights to purchase such securities.

31M 120M
Aug 30, 2022

8-K filing: The Registrant entered into a Settlement and Investment Agreement with Cytovance Biologics, Inc. to modify payment terms, issuing 1,222,281 shares of common stock to satisfy $3,251,267.75 of outstanding invoices and agreeing to future payments in cash and common stock, while limiting Cytovance's ownership to 4.9% of the Registrant's common stock. ($3.25M proceeds)

31M 40M
Aug 15, 2022

10-Q filing | 31.2M shares outstanding

31M 40M
May 16, 2022

10-Q filing | 32.5M shares outstanding

32M 39M
Mar 28, 2022

10-K filing | 32.1M shares outstanding

32M 39M
Nov 10, 2021

10-Q filing | 30.5M shares outstanding

31M 41M
Aug 23, 2021

10-Q filing | 5.2M shares outstanding

5.2M 66M
May 17, 2021

10-Q filing | 21.1M shares outstanding

21M 50M
Apr 22, 2021

S-1 filing: This is an S-1 filing for a potential offering of common stock by selling shareholders, with no guaranteed sale of shares and subject to market regulations.

28M 43M
Apr 22, 2021

POS AM filing: This prospectus relates to the issuance by GT Biopharma, Inc. of (i) 4,368,280 shares of common stock upon the exercise of 4,368,280 warrants and (ii) 247,250 shares of Common Stock that may be issued upon the exercise of 247,250 warrants.

28M 43M
Apr 16, 2021

10-K filing | 28.4M shares outstanding

28M 46M
Feb 08, 2021

S-1/A filing: This is an S-1/A filing for GT Biopharma, Inc., a clinical stage biopharmaceutical company focused on the development and commercialization of novel immuno-oncology products, including information on convertible notes, warrants and preferred stock.

78M 0
Feb 02, 2021

S-1/A filing: This S-1/A filing discusses the automatic conversion of Bridge Notes and cancellation of Settlement Warrants into common stock and warrants, leading to potential dilution for investors.

70M 2.5M
Dec 11, 2020

S-1 filing: The company is filing an S-1 form and plans to convert Bridge Notes into common stock and warrants, and issue shares upon cancellation of Settlement Warrants.

70M 2M
Nov 13, 2020

10-Q filing | 69.8M shares outstanding

70M 1.3M
Aug 14, 2020

10-Q filing | 69.8M shares outstanding

70M 1.3M
Jul 14, 2020

S-1 filing: This is an S-1 filing for GT Biopharma, Inc. The filing discusses financial results, business plans, and the offering of various securities including convertible notes, preferred stock, warrants and common stock. The company focuses on developing immuno-oncology products.

71M 480K
May 15, 2020

10-Q filing | 70.1M shares outstanding

70M 0
Mar 27, 2020

10-K filing | 50.7M shares outstanding

51M 0
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