Onconetix, Inc. (ONCO) - Dilution Analysis

Visualizing historical and potential share dilution over time

Dilution Analysis

High Risk
Significant dilution risk
Last updated: May 21, 2026

Risk Assessment Details

Potential Dilution: 247.29% of current shares
Recent Dilution: 2038.95% (2 years)
Historical Dilution Factor: significant recent dilution
Outstanding Shares
1.1M
Potential Supply
2.8M
Additional shares possible
Splits
4 Splits 4 Reverse
Past 2 years

Summary

ONCO currently has 1.14M outstanding shares. with significant dilution risk as 2.82M authorized shares could dilute existing holders by 247.3%. The company has significantly diluted shareholders by 2038.95% over the past 2 years, indicating aggressive capital raising. Recent corporate actions include 4 stock splits (positive for accessibility) and 4 reverse splits (concerning signal).

Share Structure Timeline

Outstanding Shares
Total Supply

Historical Data Points

Date Event Outstanding Supply
May 21, 2026
Stock Split

8-K filing: Stock split 1-for-10 | Outstanding: 11,464,572 → 1,140,000

1.1M 2.8M
May 13, 2026

10-Q filing | 11.5M shares outstanding

11M 28M
May 07, 2026

S-1/A filing: Form of Registration Rights Agreement relating to the resale of the shares of Common Stock underlying the Series C Preferred Stock and Warrants

3.6M 28M
Mar 13, 2026

10-K filing | 3.6M shares outstanding

3.6M 28M
Nov 13, 2025

10-Q filing | 1.4M shares outstanding

1.4M 28M
Nov 04, 2025

S-1 filing: This prospectus relates to the resale by Selling Stockholders of 22,071,891 shares of common stock of Onconetix, Inc.

1.5M 28M
Oct 16, 2025

S-1 filing: This is an S-1 filing for Onconetix, Inc. regarding the offer and sale of up to 5,100,000 shares of common stock by Keystone Capital Partners, LLC pursuant to a Common Stock ELOC Purchase Agreement.

1.5M 6.1M
Sep 26, 2025

8-K filing: Onconetix, Inc. entered into a securities purchase agreement to sell Series D convertible preferred stock and warrants for an aggregate purchase price of approximately $12.9 million and settled Veru Notes with cash, Series D Preferred Stock, and Warrants. ($19.2M proceeds)

1.5M 1M
Aug 14, 2025

10-Q filing | 1.5M shares outstanding

1.5M 1M
Jun 13, 2025
Stock Split

8-K filing: Stock split 1-for-85 | Outstanding: 44,358,422 → 521,863

520K 12K
Jun 12, 2025

10-Q filing | 44.4M shares outstanding

44M 86M
Jun 02, 2025

10-K filing | 44.4M shares outstanding

44M 86M
Feb 07, 2025

S-1/A filing: This S-1/A filing relates to the offer and sale of up to 50,000,000 shares of common stock by Keystone Capital Partners, LLC, pursuant to an equity line of credit agreement, and to a warrant inducement.

8.3M 86M
Jan 27, 2025

S-1 filing: Onconetix, Inc. is offering up to 50,000,000 shares of common stock through an equity line of credit with Keystone Capital Partners, LLC, and also new preferred investment options to purchase up to an aggregate of 559,397 shares of the Company's common stock.

8.3M 86M
Dec 10, 2024

10-Q filing | 8.3M shares outstanding

8.3M 36M
Dec 10, 2024

S-1/A filing: Onconetix, Inc. is offering 6,250,000 shares of common stock through Keystone Capital Partners, LLC, pursuant to an equity line of credit. Additionally, they closed a warrant inducement offering on July 12, 2024.

760K 36M
Dec 03, 2024

8-K filing: Onconetix, Inc. amended its forbearance agreement with Veru Inc., modifying payment terms related to a prior asset purchase agreement and increasing the percentage of net proceeds from future financings to be paid to Veru.

760K 6.8M
Nov 12, 2024

S-1/A filing: This S-1/A filing, dated November 12, 2024, relates to the offer and sale of up to 6,250,000 shares of common stock by Keystone Capital Partners, LLC pursuant to a Common Stock ELOC Purchase Agreement, and also discusses a warrant inducement offer.

760K 6.8M
Nov 12, 2024

S-1/A filing: S-1/A filing on 2024-11-12 regarding 13,054 shares of common stock issuable upon exercise of common stock preferred investment options.

760K 6.8M
Nov 01, 2024

S-1 filing: Onconetix, Inc. is offering 6,250,000 shares of common stock through an equity line of credit with Keystone Capital Partners, LLC and also relates to warrant inducement of 559,397 shares.

760K 20M
Nov 01, 2024

S-1 filing: This S-1 filing registers 10,586,556 shares of common stock for resale by selling stockholders.

760K 20M
Oct 03, 2024

8-K filing: Onconetix, Inc. entered into a securities purchase agreement with PIPE Investors for the sale of Series C convertible preferred stock and warrants for aggregate cash proceeds of $2.0 million, and also entered into a Common Stock Purchase Agreement with an ELOC Purchaser for up to $25 million of newly issued Common Stock. ($2.0M proceeds)

760K 4.9K
Sep 24, 2024
Stock Split

8-K filing: Stock split 1-for-40 | Outstanding: 29,790,119 → 755,031

760K 200K
Sep 24, 2024
Stock Split

8-K filing | Stock split 1-for-40 | Outstanding: 29,790,119 → 744,752 | Transactions: Issuance 142749 Common stock to Veru Inc.; Issuance 6741820 Common stock to certain stockholders of Proteomedix AG; Issuance 513424 Common stock to Altos Venture AG; Exercise 154027 Warrant to Altos Venture AG

740K 4.9K
Sep 05, 2024

8-K filing: Onconetix, Inc. is holding an annual meeting of stockholders on September 5, 2024, to vote on the issuance of common stock upon conversion of Series B Preferred Stock, a private placement financing of units, and the assumption and conversion of outstanding stock options of Proteomedix AG. ($5.0M proceeds)

30M 7.8M
Aug 29, 2024

10-Q filing | 29.8M shares outstanding

30M 7.8M
Jul 15, 2024

8-K filing: On July 15, 2024, Onconetix, Inc. consummated the transactions contemplated by the Inducement Letter, with certain holders exercising their existing preferred investment options to purchase an aggregate of 7,458,642 shares of the Company's common stock at a reduced exercise price of $0.15 per share, in exchange for the Company's agreement to issue new PIOs to purchase up to 22,375,926 shares of the Company's common stock.

22M 7.8M
Jul 11, 2024

8-K filing: Onconetix, Inc. entered into an inducement letter agreement with certain holders of existing preferred investment options (PIOs) to purchase shares of the Company's common stock. Holders agreed to exercise their Existing PIOs to purchase 7,458,642 shares of the Company's common stock at a reduced exercise price of $0.15 per share, in consideration for the Company's agreement to issue new PIOs to purchase up to an aggregate of 22,375,926 shares. ($1.12M proceeds)

22M 7.8M
Jun 25, 2024

S-1/A filing: This prospectus relates to the resale by Selling Stockholders of 7,828,812 shares of common stock of Onconetix, Inc.

22M 7.8M
Jun 05, 2024

S-1/A filing: This prospectus relates to the resale by Selling Stockholders of 7,828,812 shares of common stock of Onconetix, Inc.

22M 7.8M
May 20, 2024

10-Q filing | 22.1M shares outstanding

22M 7.8M
Apr 26, 2024

S-1/A filing: This S-1/A filing relates to the resale of 7,828,812 shares of common stock by selling stockholders of Onconetix, Inc.

22M 7.8M
Apr 26, 2024

8-K filing: Onconetix, Inc. entered into a Forbearance Agreement with Veru Inc. where Veru will forbear from exercising its rights and remedies under the April Veru Note until March 31, 2025, with interest accruing at 10% per annum, and the Debenture was amended to extend the maturity date to the earlier of (i) the closing under the Subscription Agreement and (ii) October 31, 2024.

22M 7.8M
Apr 11, 2024

10-K filing | 22.3M shares outstanding

22M 5.1M
Feb 14, 2024

S-1 filing: This S-1 filing relates to the resale of 5,121,601 shares of common stock by selling stockholders.

22M 5.1M
Dec 21, 2023

8-K filing: Onconetix acquired Proteomedix by issuing 4,083,779 shares of common stock and 2,692,633 shares of Series B Convertible Preferred Stock convertible into 269,263,300 shares of common stock, and also changed its name from Blue Water Biotech, Inc. to Onconetix, Inc.

18M 0
Nov 17, 2023

10-Q filing | 17.5M shares outstanding

18M 0
Oct 20, 2023

10-Q filing | 18.0M shares outstanding

18M 0
Aug 03, 2023

8-K filing: Blue Water Biotech consummated a transaction where a holder exercised existing preferred investment options to purchase 2,486,214 shares of common stock at $1.09 per share, in exchange for the company issuing new preferred investment options to purchase up to 4,972,428 shares. ($2.71M proceeds)

16M 0
Aug 01, 2023

8-K filing: Blue Water Biotech, Inc. entered into an inducement letter with a holder to exercise existing preferred investment options for 2,486,214 shares of common stock at $1.09 per share, in exchange for new preferred investment options to purchase up to 4,972,428 shares. ($2.71M proceeds)

16M 0
Jun 14, 2023

8-K filing: Blue Water Biotech, Inc. will issue 1.0 million shares of its common stock as part of an asset purchase agreement with WraSer, LLC and Xspire Pharma, LLC. ($8.5M proceeds)

16M 0
May 12, 2023

10-Q filing | 15.9M shares outstanding

16M 0
Apr 28, 2023

POS AM filing: This is a POS AM filing for common stock. The filing indicates that there are 15,924,070 shares of common stock outstanding as of April 15, 2023. It also mentions warrants exercisable for 5,264,274 shares.

16M 0
Mar 09, 2023

S-3 filing: This is an S-3 filing for a shelf offering of common stock, preferred stock, purchase contracts, warrants, subscription rights, depositary shares, and debt securities.

16M 0
Mar 09, 2023

10-K filing | 15.9M shares outstanding

16M 0
Nov 14, 2022

10-Q filing | 14.3M shares outstanding

14M 0
Oct 12, 2022

8-K filing: The Company settled with Boustead Securities, waiving right of first refusal and standstill provisions in exchange for $1,050,000 and the issuance of 93,466 shares of restricted common stock in exchange for the cancellation of a representative warrant.

14M 0
Aug 29, 2022

S-1 filing: This S-1 filing registers Placement Shares and Warrant Shares on behalf of Selling Stockholders.

14M 0
Aug 15, 2022

10-Q filing | 13.6M shares outstanding

14M 0
Aug 11, 2022

8-K filing: Blue Water Vaccines Inc. closed a private placement, issuing 1,350,000 shares of common stock, pre-funded warrants to purchase 2,333,280 shares, and preferred investment options to purchase up to 4,972,428 shares, raising approximately $10.0 million in gross proceeds. ($10.0M proceeds)

12M 0
May 19, 2022

S-1/A filing: This S-1/A filing registers the Placement Shares and Warrant Shares on behalf of the Selling Stockholders, to be offered and sold by them from time to time.

12M 0
May 13, 2022

10-Q filing | 11.6M shares outstanding

12M 0
May 03, 2022

S-1 filing: This S-1 filing registers placement shares and warrant shares on behalf of selling stockholders, who may sell these shares from time to time. The company will not receive any proceeds from the sale of common stock by the selling stockholders.

12M 0
Apr 19, 2022

8-K filing: Blue Water Vaccines Inc. consummated a private placement, issuing 590,406 shares of common stock, pre-funded warrants to purchase 590,406 shares, and preferred investment options to purchase up to 1,180,812 shares, for gross proceeds of approximately $8.0 million. ($4.0M proceeds)

N/A 0
Feb 24, 2022

8-K filing: Blue Water Vaccines Inc. completed a public offering of 2,222,222 shares of common stock at $9.00 per share, resulting in net proceeds of approximately $17.8 million, and converted all outstanding series seed preferred stock into 5,626,365 shares of common stock.

N/A 0
Feb 08, 2022

S-1/A filing: This S-1/A filing relates to a common stock offering managed by Boustead Securities, LLC. The prospectus includes information for investors outside the United States and mentions trademark usage.

N/A 0
Jan 06, 2022

S-1/A filing: This is an S-1/A filing for an offering managed by Maxim Group LLC, including common stock and warrants.

N/A 0
Dec 29, 2021

S-1/A filing: This S-1/A filing registers common stock and warrants with Maxim Group LLC as the sole book-running manager.

N/A 0
Dec 13, 2021

S-1/A filing: This is an S-1/A filing for an offering managed by Maxim Group LLC. The filing includes common stock and warrants. The registration statement is being amended to delay its effective date.

N/A 0
Nov 29, 2021

S-1/A filing: This is an S-1/A filing for a common stock offering with warrants, managed by Maxim Group LLC.

N/A 0
Nov 05, 2021

S-1/A filing: This is an S-1/A filing for a common stock offering managed by Maxim Group LLC. The filing includes warrants exercisable at 115% of the common stock's public offering price.

N/A 0
Oct 08, 2021

S-1 filing: S-1 filing for common stock offering managed by Maxim Group LLC, including potential over-allotment shares and representative's warrants. Registration fee is paid, and the effective date may be delayed.

N/A 0
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