ONCO · Onconetix, Inc.

Represents a restricted stock award originally granted to the Reporting Person on March 23, 2025 pursuant to the Issuer's 2022 Equity Incentive Plan, as amended ("2022 Plan" and the grant on such date, the "Original Award"). On August 15, 2025, the Original Award was modified to change the vesting terms, such that the award, which was to vest in full on August 31, 2025, was changed to vest in full on August 31, 2026, so long as the Reporting Person continues to serve as a non-employee director of the Issuer until such date. Except as set forth herein, the Original Award remains unmodified.

On June 13, 2025, the Issuer effected a 1-for-85 reverse split of its Common Stock. The amounts set forth herein are presented on a post-split basis.

Represents a restricted stock award originally granted to the Reporting Person on September 26, 2024 pursuant to the Issuer's 2022 Equity Incentive Plan, as amended ("2022 Plan" and the grant on such date, the "Original Award"). On August 15, 2025, the Original Award was modified to change the vesting terms, such that the award, which was to vest in full on August 31, 2025, was changed to vest in full on August 31, 2026, so long as the Reporting Person continues to serve as a non-employee director of the Issuer until such date. Except as set forth herein, the Original Award remains unmodified.

On June 13, 2025, the Issuer effected a 1-for-85 reverse split of its Common Stock. The amounts set forth herein are presented on a post-split basis.

Represents a restricted stock award originally granted to the Reporting Person on September 26, 2024 pursuant to the Issuer's 2022 Equity Incentive Plan, as amended ("2022 Plan" and the grant on such date, the "Original Award"). On August 15, 2025, the Original Award was modified to change the vesting terms, such that the award, which was to vest in full on August 31, 2025, was changed to vest in full on August 31, 2026, so long as the Reporting Person continues to serve as a non-employee director of the Issuer until such date. Except as set forth herein, the Original Award remains unmodified.

On June 13, 2025, the Issuer effected a 1-for-85 reverse split of its Common Stock. The amounts set forth herein are presented on a post-split basis.

Represents a restricted stock award granted to the Reporting Person pursuant to the 2022 Plan. The award will vest in full on August 31, 2026 so long as the Reporting Person continues to serve as a non-employee director of the Issuer until such date.

Represents a restricted stock award granted to the Reporting Person pursuant to the 2022 Plan. The award will vest in full on August 31, 2026 so long as the Reporting Person continues to serve as a non-employee director of the Issuer until such date.

Represents a restricted stock award granted to the Reporting Person pursuant to the 2022 Plan. The award will vest in full on August 31, 2026 so long as the Reporting Person continues to serve as a non-employee director of the Issuer until such date.

Represents a restricted stock award granted to the Reporting Person pursuant to the 2022 Plan. The award will vest in full on August 31, 2026 so long as the Reporting Person continues to serve as a non-employee director of the Issuer until such date.

Represents a restricted stock award originally granted to the Reporting Person on September 26, 2024 pursuant to the Issuer's 2022 Equity Incentive Plan, as amended ("2022 Plan" and the grant on such date, the "Original Award"). On August 15, 2025, the Original Award was modified to change the vesting terms, such that the award, which was to vest in full on August 31, 2025, was changed to vest in full on August 31, 2026, so long as the Reporting Person continues to serve as a non-employee director of the Issuer until such date. Except as set forth herein, the Original Award remains unmodified.

On June 13, 2025, the Issuer effected a 1-for-85 reverse split of its Common Stock. The amounts set forth herein are presented on a post-split basis.

1. Pursuant to a Subscription Agreement with the Issuer dated December 15, 2023, the Reporting Person purchased Units of Common Stock and warrants (immediately exercised) on September 24, 2024. Under a "make-whole" provision in the Subscription Agreement, the Issuer agreed to adjust the price for the Units by issuing additional shares of Common Stock to the Reporting Person based on the Issuer VWAP (as defined in the Subscription Agreement) during a specified period following the purchase. At the end of the period, the number of additional shares to be issued was determined to be 241,514, and those shares were issued to the Reporting Person on July 14, 2025 pursuant to the "make-whole" provision.

1. Pursuant to a Subscription Agreement with the Issuer dated December 15, 2023, the Reporting Person purchased Units of Common Stock and warrants (immediately exercised) on September 24, 2024. Under a "make-whole" provision in the Subscription Agreement, the Issuer agreed to adjust the price for the Units by issuing additional shares of Common Stock to the Reporting Person based on the Issuer VWAP (as defined in the Subscription Agreement) during a specified period following the purchase. At the end of the period, the number of additional shares to be issued was determined to be 241,514, and those shares were issued to the Reporting Person on July 14, 2025 pursuant to the "make-whole" provision.

On September 24, 2024, the Issuer effected a 1-for-40 reverse split of its Common Stock, and on June 13, 2025, the Issuer effected a 1-for-85 reverse split of its Common Stock.

On March 23, 2025, the Reporting Person was granted 1,709 restricted stock units, which will be settled in shares of common stock, par value $0.00001. The restricted stock units fully vest on August 31, 2025.

Includes unvested RSUs.

Represents shares of Common Stock of the Issuer issuable upon settlement of Restricted Stock Units.

Represents shares of Common Stock of the Issuer issuable upon settlement of Restricted Stock Units.

Represents a restricted stock award granted to the Reporting Person pursuant to the Issuer's 2022 Equity Incentive Plan, as amended. The award will vest in full on August 31, 2025 so long as the Reporting Person continues to serve as a non-employee director of the Issuer until such date.

Represents a restricted stock award granted to the Reporting Person pursuant to the Issuer's 2022 Equity Incentive Plan, as amended. The award will vest in full on August 31, 2025 so long as the Reporting Person continues to serve as a non-employee director of the Issuer until such date.

Represents a restricted stock award granted to the Reporting Person pursuant to the Issuer's 2022 Equity Incentive Plan, as amended. The award will vest in full on August 31, 2025 so long as the Reporting Person continues to serve as a non-employee director of the Issuer until such date.

Represents a restricted stock award granted to the Reporting Person pursuant to the Issuer's 2022 Equity Incentive Plan, as amended. The award will vest in full on August 31, 2025 so long as the Reporting Person continues to serve as a non-employee director of the Issuer until such date.

Represents a restricted stock award granted to the Reporting Person pursuant to the Issuer's 2022 Equity Incentive Plan, as amended. The award will vest in full on August 31, 2025 so long as the Reporting Person continues to serve as a non-employee director of the Issuer until such date.

Represents shares of common stock of the Issuer issued to the Reporting Person upon automatic conversion of Series B preferred stock ("Preferred Shares") of the Issuer, in accordance with the Certificate of Designation for the Preferred Shares.

Represents shares of common stock of the Issuer issued to the Reporting Person upon automatic conversion of Series B preferred stock ("Preferred Shares") of the Issuer, in accordance with the Certificate of Designation for the Preferred Shares.

Represents a restricted stock award granted to the Reporting Person pursuant to the Issuer's 2022 Equity Incentive Plan, as amended. The award will vest in full on June 14, 2024, so long as the Reporting Person continues to serve as a non-employee director of the Issuer until such date.

Represents a restricted stock award granted to the Reporting Person pursuant to the Issuer's 2022 Equity Incentive Plan, as amended. The award will vest in full on May 31, 2024 so long as the Reporting Person continues to serve as a non-employee director of the Issuer until such date.

Represents a restricted stock award granted to the Reporting Person pursuant to the Issuer's 2022 Equity Incentive Plan, as amended. The award will vest in full on May 31, 2024 so long as the Reporting Person continues to serve as a non-employee director of the Issuer until such date.

Represents a restricted stock award granted to the Reporting Person pursuant to the Issuer's 2022 Equity Incentive Plan, as amended. The award will vest in full on May 31, 2024 so long as the Reporting Person continues to serve as a non-employee director of the Issuer until such date.

Represents a restricted stock award granted to the Reporting Person pursuant to the Issuer's 2022 Equity Incentive Plan, as amended. The award will vest in full on May 31, 2024 so long as the Reporting Person continues to serve as a non-employee director of the Issuer until such date.

The restricted stock award was granted pursuant to the Blue Water Biotech, Inc. Amended and Restated 2022 Equity Incentive Plan. 50% of the stock award will vest on August 17, 2023; 25% of the award will vest on August 17, 2024; and the remaining 25% of the award will vest on August 18, 2025.

The restricted stock award was granted pursuant to the Blue Water Biotech, Inc. Amended and Restated 2022 Equity Incentive Plan. 50% of the stock award will vest on August 17, 2023; 25% of the award will vest on August 17, 2024; and the remaining 25% of the award will vest on August 18, 2025.

The restricted stock award was granted pursuant to the Blue Water Biotech, Inc. Amended and Restated 2022 Equity Incentive Plan. 50% of the stock award will vest on August 17, 2023; 25% of the award will vest on August 17, 2024; and the remaining 25% of the award will vest on August 18, 2025.

Distribution of Issuer Common Stock pursuant to a pro rata distribution by Cincinnati Cornerstone Investors BWV I, LLC.

Cincinnati Cornerstone Capital, LLC, as the manager and a member of Cincinnati Cornerstone Investors BWV I, LLC, beneficially owns the reported securities indirectly, but disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein.

Stock options (the "Options") were granted to Mr. Ramdeen on January 26, 2023. 597 of the Options will vest and become exercisable on each of February 13, 2023, March 13, 2023 and April 13, 2023. The remaining 595 Options will vest on May 13, 2023.

Distribution of Issuer Common Stock pursuant to a pro rata distribution by Cincinnati Cornerstone Investors BWV I, LLC.

Cincinnati Cornerstone Capital, LLC, as the manager and a member of Cincinnati Cornerstone Investors BWV I, LLC, beneficially owns the reported securities indirectly, but disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein.

Stock options (the "Options") were granted to Mr. Jeremic on November 8, 2022. The Options vest and become exercisable in 6 equal monthly installments beginning on December 8, 2022 and ending on May 31, 2023.

Distribution of Issuer Common Stock pursuant to a pro rata distribution by Cincinnati Cornerstone Investors BWV I, LLC.

Cincinnati Cornerstone Capital, LLC, as the manager and a member of Cincinnati Cornerstone Investors BWV I, LLC, beneficially owns the reported securities indirectly, but disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein.

Stock options (the "Options") were granted to Mr. Tarsh on August 22, 2022. The Options vest and become exercisable in 9 monthly installments beginning on September 22, 2022.

The Common Stock reported herein were sold by the reporting person at a high price of $4.22, a low price of $4.05 and an average price of $4.1034 per share of Common Stock. Upon request, the reporting person will provide details of each sale.