Material Agreement Form 8 K

Item 1.01 Entry into a Material Definitive Agreement.

Amendments to 2022 Notes and 2024 Notes

On June 30, 2024, Arch Therapeutics, Inc. (the "Company") entered into an amendment ("Amendment No. 17 to the First 2022 Notes") with the holders of the Company's outstanding Senior Secured Convertible Promissory Notes, as separately amended on February 14, 2023, March 10, 2023, March 15, 2023, April 15, 2023, May 15, 2023, June 15, 2023, July 1, 2023, July 7, 2023, July 31, 2023, August 30, 2023, September 30, 2023, October 31, 2023, November 15, 2023, January 5, 2024, March 15, 2024 and April 30, 2024 (as amended, the "First 2022 Notes"), issued in connection with a private placement financing the Company completed on July 6, 2022.

On June 30, 2024, the Company also entered into an amendment ("Amendment No. 17 to the Second 2022 Notes") with the holders of the Company's outstanding Unsecured Convertible Promissory Notes, as separately amended on February 14, 2023, March 10, 2023, March 15, 2023, April 15, 2023, May 15, 2023, June 15, 2023, July 1, 2023, July 7, 2023, July 31, 2023, August 30, 2023, September 30, 2023, October 31, 2023, November 15, 2023, January 5, 2024, March 15, 2024 and April 30, 2024 (as amended, the "Second 2022 Notes"), issued in connection with a private placement financing the Company completed on January 18, 2023.

On June 30, 2024, the Company also entered into an amendment ("Amendment No. 12 to the Third 2022 Notes") with the holders of the Company's outstanding Unsecured Convertible Promissory Notes, as separately amended on June 15, 2023, July 1, 2023, July 7, 2023, July 31, 2023, August 30, 2023, September 30, 2023, October 31, 2023, November 15, 2023, January 5, 2024, March 15, 2024 and April 30, 2024 (as amended, the "Third 2022 Notes"), issued in connection with a private placement financing the Company completed on May 15, 2023.

On June 30, 2024, the Company also entered into an amendment ("Amendment No. 3 to the Fourth 2022 Notes") with the holders of the Company's outstanding Unsecured Convertible Promissory Notes, as separately amended on March 15, 2024 and April 30, 2024, issued in connection with a private placement financing the Company completed on March 12, 2024 (as amended, the "Fourth 2022 Notes").

On June 30, 2024, the Company also entered into an amendment ("Amendment No. 1 to the First 2024 Notes" and, together with Amendment No. 17 to the First 2022 Notes, Amendment No. 17 to the Second 2022 Notes, Amendment No. 12 to the Third 2022 Notes and Amendment No. 3 to the Fourth 2022 Notes, the "Amendments to the Notes") with the holders of the Company's outstanding Senior Secured Convertible Promissory Notes issued in connection with a private placement financing the Company completed on May 15, 2024 (as amended, the "First 2024 Notes" and, together with the First 2022 Notes, Second 2022 Notes, Third 2022 Notes and Fourth 2022 Notes, the "Notes").

Under the Amendments to the Notes, the Notes were amended to extend the date of the completion of an "Uplist" (as defined therein) and to extend the respective maturity date of each of the Notes from June 30, 2024, to August 15, 2024.

The preceding descriptions of Amendment No. 17 to the First 2022 Notes, Amendment No. 17 to the Second 2022 Notes, Amendment No. 12 to the Third 2022 Notes, Amendment No. 3 to the Fourth 2022 Notes and Amendment No. 1 to the First 2024 Notes are qualified in their entirety by reference to the copies of the Forms of Amendment No. 17 to the First 2022 Notes, Amendment No. 17 to the Second 2022 Notes, Amendment No. 12 to the Third 2022 Notes, Amendment No. 3 to the Fourth 2022 Notes and Amendment No. 1 to the First 2024 Notes, filed herewith as Exhibit 10.1, Exhibit 10.2, Exhibit 10.3, Exhibit 10.4 and Exhibit 10.5 to this Current Report on Form 8-K, respectively, which are incorporated herein by reference.