Entero Therapeutics, Inc. (ENTO) - Dilution Analysis

Visualizing historical and potential share dilution over time

Dilution Analysis

High Risk
Significant dilution risk
Last updated: May 27, 2026

Risk Assessment Details

Potential Dilution: 172.78% of current shares
Recent Dilution: 326.27% (2 years)
Historical Dilution Factor: significant recent dilution
Outstanding Shares
6.7M
Potential Supply
11M
Additional shares possible
Splits
1 Split 1 Reverse
Past 2 years

Summary

ENTO currently has 6.65M outstanding shares. with significant dilution risk as 11.5M authorized shares could dilute existing holders by 172.8%. The company has significantly diluted shareholders by 326.27% over the past 2 years, indicating aggressive capital raising. Recent corporate actions include 1 stock split (positive for accessibility) and 1 reverse split (concerning signal).

Share Structure Timeline

Outstanding Shares
Total Supply

Historical Data Points

Date Event Outstanding Supply
May 27, 2026

10-Q filing | 6.7M shares outstanding

6.7M 11M
May 20, 2026

8-K filing: GridAI Technologies Corp. entered into a debt settlement agreement to satisfy obligations by paying $800,000 in cash and issuing 71,482 shares of common stock at $3.25 per share. ($0.23M proceeds)

2.5M 11M
May 14, 2026

8-K filing: GridAI Technologies Corp. entered into securities purchase agreements to issue common stock and warrants for aggregate gross proceeds of approximately $7.79 million in private placements. ($7.79M proceeds)

2.5M 11M
Nov 19, 2025

10-Q filing | 2.5M shares outstanding

2.5M 11M
Oct 22, 2025

8-K filing: Entero Therapeutics, Inc. entered into a Securities Purchase Agreement with an investor for a private placement of up to $5,000,000 in gross proceeds through Promissory Notes and a common stock purchase warrant, with an initial closing on October 17, 2025, involving a $500,000 note and a warrant to purchase up to 200,000 shares of common stock. ($0.5M proceeds)

1.6M 11M
Oct 06, 2025

8-K filing: The company filed a Certificate of Designation authorizing the creation of Series H Preferred Stock in the amount of 38,801.546 shares, convertible into common stock at a ratio of 1:1,000 subject to adjustments for stock splits and other corporate actions.

1.6M 11M
Sep 10, 2025

S-1/A filing: The selling stockholders named in this prospectus may use this prospectus to offer and resell from time to time up to an aggregate of 4,945,510 shares of our common stock.

1.6M 11M
Aug 26, 2025

S-1 filing: The selling stockholders may offer and resell up to an aggregate of 4,945,510 shares of common stock issuable upon exercise of pre-funded warrants and common warrants.

1.6M 11M
Aug 18, 2025
Stock Split

8-K filing: Stock split 1-for-3 | Outstanding: 4,765,004 → 1,588,334

1.6M 6.6M
Aug 14, 2025

10-Q filing | 4.8M shares outstanding

4.8M 20M
Jul 02, 2025

S-1/A filing: This S-1/A filing relates to an offering of 12,000,000 shares of common stock or Pre-funded Warrants to purchase an aggregate of 12,000,000 shares of common stock, with an assumed public offering price of $0.50 per share.

4.8M 20M
Jun 23, 2025

S-1/A filing: S-1/A filing for offering of 12,000,000 shares of common stock or Pre-funded Warrants to purchase an aggregate of 12,000,000 shares of common stock.

4.8M 20M
Jun 05, 2025

S-1/A filing: S-1/A filing for offering of 15,228,426 shares of common stock or Pre-funded Warrants to purchase an aggregate of 15,228,426 shares of common stock.

4.8M 23M
May 15, 2025

10-Q filing | 4.8M shares outstanding

4.8M 24M
May 12, 2025

S-1 filing: This S-1 filing details a proposed offering of common stock or pre-funded warrants to raise $6,000,000, with the primary use of proceeds for marketing, debt repayment, and development of the Adrulipase product candidate.

4.8M 24M
Apr 01, 2025

10-K filing | 4.8M shares outstanding

4.8M 7.7M
Mar 25, 2025

8-K filing: Entero Therapeutics, Inc. entered into a Rescission Agreement to unwind the merger transactions with ImmunogenX, Inc., including the rescission of 36,830 common shares and 11,777.418 preferred shares issued in the merger.

4.6M 7.7M
Nov 13, 2024

10-Q filing | 4.6M shares outstanding

4.6M 7.7M
Oct 21, 2024

10-Q filing | 2.9M shares outstanding

2.9M 7.7M
Jul 26, 2024

S-3 filing: This prospectus relates to the offer and resale of up to an aggregate of 3,525,348 shares of common stock issuable upon exercise of common warrants issued to selling stockholders in a warrant inducement transaction which closed on July 12, 2024.

2M 7.7M
Jul 11, 2024

8-K filing: Entero Therapeutics, Inc. entered into a warrant exercise inducement offer letter with a holder to exercise Existing Warrants to purchase 1,762,674 shares of the Company's common stock at $1.09 per share, in exchange for new warrants to purchase up to 3,525,348 shares of the Company's common stock; the Company received aggregate gross proceeds of approximately $1.9 million. ($1.9M proceeds)

2M 4.1M
May 31, 2024

S-3 filing: This S-3 filing relates to the offer and resale of up to 1,257,625 shares of common stock held by selling stockholders, issuable upon exercise of warrants from private placements.

2M 4.1M
May 14, 2024

10-Q filing | 2.0M shares outstanding

2M 2.9M
May 13, 2024

8-K filing: First Wave BioPharma, Inc. completed a registered direct offering of 275,000 shares of common stock and pre-funded warrants to purchase up to 91,000 shares, along with common warrants to purchase up to 732,000 shares, with net proceeds of approximately $0.9 million to be used for working capital and general corporate purposes.

1.6M 2.9M
Mar 29, 2024

10-K filing | 1.6M shares outstanding

1.6M 2.9M
Mar 14, 2024

8-K filing: First Wave BioPharma, Inc. acquired ImmunogenX, Inc., issuing 36,830 shares of common stock and 11,777.418 shares of Series G Preferred Stock to ImmunogenX stockholders, and issuing 18,475 shares of Common Stock and 595.808 shares of Series G Preferred Stock to Tungsten Partners LLC as partial compensation for financial advisory services.

2M 2.9M
Mar 05, 2024

8-K filing: First Wave BioPharma, Inc. entered into a placement agency agreement and a securities purchase agreement to sell 173,100 shares of common stock and pre-funded warrants to purchase up to 352,525 shares of common stock in a registered direct offering, with concurrent private placement of common warrants to purchase up to 525,625 shares of common stock, at a price of $7.61 per share of common stock and $7.6099 per pre-funded warrant, with net proceeds of approximately $3.6 million. ($4.0M proceeds)

670K 2.9M
Jan 08, 2024

S-3 filing: This S-3 filing is for the registration of 1,762,674 shares of common stock for resale by selling stockholders, issuable upon exercise of common warrants with an exercise price of $5.00 per share, and the company will not receive any proceeds from the sale.

670K 2.9M
Dec 28, 2023

RW filing: First Wave BioPharma, Inc. is withdrawing its Registration Statement on Form S-1 (File No. 333-275316) because the Company has elected not to proceed with the public offering of securities contemplated by the Registration Statement at this time.

670K 1.1M
Dec 27, 2023

8-K filing: First Wave BioPharma, Inc. entered into a warrant exercise inducement offer letter with a Holder to exercise Existing Warrants for 881,337 shares at $5.50 per share, issuing new warrants to purchase up to 1,762,674 shares and receiving aggregate gross proceeds of approximately $4.8 million. ($9.6M proceeds)

670K 6.6M
Dec 27, 2023

S-1/A filing: This is an S-1/A filing for offering up to 1,381,215 shares of common stock, 1,381,215 pre-funded warrants to purchase up to 1,381,215 shares of common stock, and 2,762,430 common warrants to purchase up to 2,762,430 shares of common stock.

670K 6.6M
Dec 18, 2023

S-1/A filing: The company is filing an S-1/A to register an offering of common stock, common warrants, and pre-funded warrants.

13M 8.4M
Dec 18, 2023
Stock Split

8-K filing: Stock split 1-for-20 | Outstanding: 13,463,479 → 674,998

670K 8.4M
Nov 13, 2023

10-Q filing | 13.5M shares outstanding

13M 22M
Nov 03, 2023

S-1 filing: The company is offering shares of common stock, common warrants, and pre-funded warrants.

13M 22M
Sep 22, 2023

S-3 filing: This S-3 filing relates to the potential issuance of common stock upon exercise of warrants held by Armistice Capital, with a maximum of 11,764,072 shares issuable, subject to a 4.99% beneficial ownership limitation; the company is also addressing Nasdaq compliance issues regarding minimum stockholders' equity and minimum bid price.

13M 22M
Sep 15, 2023

8-K filing: First Wave BioPharma, Inc. completed a warrant exercise inducement offer, resulting in the issuance of 5,882,036 shares of common stock upon exercise of existing warrants and the issuance of new warrants to purchase up to 11,764,072 shares, generating gross proceeds of approximately $4.0 million. ($4.0M proceeds)

4.2M 10M
Aug 14, 2023

10-Q filing | 4.2M shares outstanding

4.2M 10M
Jul 21, 2023

8-K filing: First Wave BioPharma, Inc. completed a public offering of 610,000 shares of common stock, pre-funded warrants to purchase 2,675,000 shares, and common warrants to purchase 6,570,000 shares for net proceeds of approximately $1.8 million.

1.5M 10M
Jul 13, 2023

S-1/A filing: The company is offering shares of common stock, common warrants, and pre-funded warrants to purchase common stock.

1.5M 37M
Jul 12, 2023

S-1/A filing: The company is offering shares of common stock, common warrants and pre-funded warrants.

1.5M 37M
Jul 07, 2023

S-1/A filing: This S-1/A filing includes the offering of up to 6,578,947 shares of common stock, common warrants to purchase up to 13,157,894 shares of common stock, and pre-funded warrants to purchase up to 6,578,947 shares of common stock.

1.5M 37M
Jun 20, 2023

S-3 filing: This S-3 filing registers the resale of up to 3,448,664 shares of First Wave BioPharma, Inc. common stock by selling stockholders.

1.5M 10M
Jun 16, 2023

8-K filing: First Wave BioPharma, Inc. entered into warrant exercise inducement offer letters with certain holders to exercise Existing Warrants for 1,724,332 shares at $1.15 per share, issuing new warrants to purchase up to 3,448,664 shares and receiving aggregate gross proceeds of approximately $2.4 million. ($2.4M proceeds)

1.5M 6.9M
May 12, 2023

10-Q filing | 1.5M shares outstanding

1.5M 6.9M
Mar 21, 2023

S-3 filing: S-3 filing by Armistice Capital Master Fund Ltd. relating to shares of Common Stock. Includes shares of Common Stock which are not being offered pursuant to this prospectus.

1.5M 6.9M
Mar 20, 2023

10-K filing | 1.0M shares outstanding

1M 3.8M
Mar 15, 2023

8-K filing: First Wave BioPharma, Inc. entered into a Securities Purchase Agreement with a single institutional investor to issue 128,000 shares of common stock, pre-funded warrants to purchase up to 895,018 shares, and common warrants to purchase up to 2,046,036 shares at a purchase price of $3.91 per share, with expected gross proceeds of approximately $4.0 million. ($4.0M proceeds)

1M 3.8M
Jan 18, 2023
Stock Split

8-K filing: Stock split 1-for-7 | Outstanding: 5,804,671 → 995,003

1M 3.8M
Dec 02, 2022

S-3 filing: This S-3 filing relates to the potential issuance of common stock by the company, which could dilute the economic and voting interests of existing stockholders. The company is also facing challenges in maintaining compliance with Nasdaq's continued listing requirements.

5.8M 27M
Nov 22, 2022

8-K filing: First Wave BioPharma, Inc. entered into a Securities Purchase Agreement for a private placement offering of pre-funded warrants and common warrants with a single institutional investor. ($5.0M proceeds)

2.3M 27M
Nov 14, 2022

10-Q filing | 2.3M shares outstanding

2.3M 27M
Oct 12, 2022

8-K filing: First Wave BioPharma, Inc. closed a public offering on October 11, 2022, selling 255,000 shares of common stock, pre-funded warrants to purchase up to 3,183,396 shares, and common warrants to purchase up to 3,438,396 shares, with net proceeds of $5.2 million used for debt payment, working capital, and corporate purposes.

1 27M
Oct 06, 2022

S-1/A filing: The company is offering shares of common stock, pre-funded warrants, and common warrants with H.C. Wainwright & Co., LLC as the placement agent.

1 27M
Sep 22, 2022

S-1/A filing: The company is offering common stock, pre-funded warrants, and common warrants to purchase shares of common stock, with the offering price based on the last reported sale price of the common stock.

1 10M
Sep 14, 2022

S-1 filing: The company is offering shares of common stock and common warrants, as well as pre-funded warrants to certain purchasers, with H.C. Wainwright & Co., LLC acting as the exclusive placement agent.

1 2.2M
Aug 26, 2022
Stock Split

8-K filing: Stock split 1-for-30 | Outstanding: 21,807,333 → 1

1 2.2M
Aug 15, 2022

10-Q filing | 21.8M shares outstanding

22M 65M
Jul 28, 2022

S-3 filing: This S-3 filing registers 4,120,000 shares of First Wave BioPharma common stock for resale by selling stockholders, including shares issuable upon conversion of preferred stock and exercise of warrants, with the company not selling any securities or receiving proceeds.

22M 65M
Jul 18, 2022

8-K filing: First Wave BioPharma entered into a Securities Purchase Agreement to issue Series D and E Preferred Stock convertible into Common Stock, along with warrants, and filed certificates of designation for the preferred stock, while also planning a reverse stock split amendment. ($0.3M proceeds)

22M 60M
May 23, 2022

10-Q filing | 21.5M shares outstanding

22M 60M
May 13, 2022

8-K filing: Holders of 81.3% of Series B Convertible Preferred Stock waived their Series B Exchange Right with respect to any Subsequent Financing occurring on or after January 1, 2022 and the Company permanently reduced the exercise price of the Series B Warrants originally issued on July 16, 2020 held by the Consenting Holders to $0.25 per share or, in the case of Consenting Holders who are officers and directors of the Company, $0.3294.

17M 60M
Mar 31, 2022

10-K filing | 16.7M shares outstanding

17M 60M
Mar 01, 2022

8-K filing: First Wave BioPharma, Inc. entered into a securities purchase agreement to sell 1,650,000 shares of common stock, pre-funded warrants exercisable for up to 4,848,195 shares, and Series C warrants exercisable for up to 6,498,195 shares in a registered direct offering, with an expected closing on March 2, 2022, and also may issue up to 1,482,153 additional shares of common stock may be issued pursuant to the Series B Exchange Right in excess of amounts currently underlying the Series B Preferred Stock and up to 1,807,203 shares of common stock issuable upon exercise of the Warrants. ($2.29M proceeds)

9.3M 60M
Jan 21, 2022

S-3 filing: This is an S-3 filing for shares of common stock offered by the Selling Stockholders.

9.3M 60M
Dec 06, 2021

8-K filing: First Wave BioPharma, Inc. sold 3,682,120 shares of its common stock under the At The Market Agreement for gross proceeds of approximately $10.5 million, less issuance costs of approximately $327,000. ($10.5M proceeds)

9.3M 60M
Sep 13, 2021
Stock Split

8-K filing | Stock split 10-for-1 | Outstanding: 93,261,897 → 9,965,174 | Transactions: Issuance 624025 Common stock $4.0M to Stockholders of First Wave Bio, Inc. | Proceeds: $4.0M

10M 60M
Sep 13, 2021
Stock Split

8-K filing: Stock split 1-for-10 | Outstanding: 93,261,897 → 9,300,000

9.3M 6M
Aug 16, 2021

10-Q filing | 93.3M shares outstanding

93M 60M
May 26, 2021

S-3 filing: This S-3 filing relates to an at-the-market offering of common stock with an aggregate offering price of up to $50,000,000. The company intends to use the net proceeds for general corporate purposes.

79M 60M
May 24, 2021

10-Q filing | 78.6M shares outstanding

79M 60M
Apr 06, 2021

POS AM filing: This POS AM filing registers the resale of common stock including shares issuable upon exercise of warrants and restricted stock.

31M 60M
Mar 31, 2021

10-K filing | 31.2M shares outstanding

31M 77M
Feb 11, 2021

S-3/A filing: This S-3/A filing relates to the offering and sale of common stock by selling stockholders. The company will not receive any proceeds from the sale of shares but may receive proceeds from the cash exercise of warrants, which would be used for working capital and general corporate purposes.

49M 77M
Feb 01, 2021

S-3 filing: This S-3 filing relates to an offering of common stock by selling stockholders, including shares issuable upon exercise of Series B Exchange Warrants. The company will not receive proceeds from the sale of shares by the selling stockholders, except upon cash exercise of the warrants.

49M 77M
Jan 13, 2021

S-1 filing: This S-1 filing registers the resale of common stock issuable upon conversion of Series C Preferred Stock and exercise of Investor Warrants sold in a private placement.

29M 77M
Nov 16, 2020

10-Q filing | 28.9M shares outstanding

29M 60M
Sep 17, 2020

S-3/A filing: This S-3/A filing registers shares of common stock offered by selling stockholders, including shares issuable upon conversion of Series B Preferred Stock and exercise of various warrants.

29M 60M
Aug 14, 2020

10-Q filing | 28.5M shares outstanding

29M 57M
Jul 27, 2020

S-3 filing: This S-3 filing registers 50,847,320 shares of common stock offered by selling stockholders, issuable upon conversion of preferred stock and exercise of warrants.

29M 57M
May 15, 2020

10-Q filing | 28.2M shares outstanding

28M 6.4M
Mar 30, 2020

10-K filing | 26.8M shares outstanding

27M 6.4M
Feb 24, 2020

S-3/A filing: The company filed an S-3/A to register for resale up to 11,583,969 shares of common stock, the Conversion Shares, the Warrant Shares and shares of Common Stock issuable upon conversion of the Placement Agent Warrants.

N/A 6.4M
Feb 07, 2020

S-3 filing: This is an S-3 filing for a company issuing common stock, convertible notes, and warrants through multiple offerings. It details an equity line purchase agreement with Lincoln Park Capital Fund, a convertible note offering with warrants, and an underwritten public offering.

N/A 31M
Jan 13, 2020

S-1/A filing: This is an S-1/A filing including information on a July 2019 underwritten public offering, cyber-related fraud, an amendment to the charter and approved reverse stock split, and a December 2019 convertible note offering.

N/A 6M
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