Document And Entity Information - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Sep. 30, 2023 |
Feb. 14, 2024 |
Mar. 31, 2023 |
|
| Document Information [Line Items] | |||
| Entity, Registrant Name | ARCH THERAPEUTICS, INC. | ||
| Document, Type | 10-K/A | ||
| Document, Annual Report | true | ||
| Document, Period End Date | Sep. 30, 2023 | ||
| Current Fiscal Year End Date | --09-30 | ||
| Document, Fiscal Period Focus | FY | ||
| Document, Fiscal Year Focus | 2023 | ||
| Document, Transition Report | false | ||
| Entity, File Number | 000-54986 | ||
| Entity, Incorporation, State or Country Code | NV | ||
| Entity, Tax Identification Number | 46-0524102 | ||
| Entity, Address, Address Line One | 235 Walnut Street, Suite 6 | ||
| Entity, Address, City or Town | Framingham | ||
| Entity, Address, State or Province | MA | ||
| Entity, Address, Postal Zip Code | 01702 | ||
| City Area Code | 617 | ||
| Local Phone Number | 431-2313 | ||
| Title of 12(g) Security | Common Stock, par value $0.001 per share | ||
| Entity, Well-known Seasoned Issuer | No | ||
| Entity, Voluntary Filers | No | ||
| Entity, Current Reporting Status | Yes | ||
| Entity, Interactive Data, Current | Yes | ||
| Entity, Filer Category | Non-accelerated Filer | ||
| Entity, Small Business | true | ||
| Entity, Emerging Growth Company | false | ||
| ICFR Auditor Attestation Flag | false | ||
| Document, Financial Statement Error Correction Flag | false | ||
| Entity, Shell Company | false | ||
| Entity, Public Float | $ 4,000,000 | ||
| Entity, Common Stock Shares, Outstanding | 4,742,363 | ||
| Auditor Name | Weinberg & Company, P.A. | ||
| Auditor Location | Los Angeles, California | ||
| Auditor Firm ID | 572 | ||
| Amendment Description | Arch Therapeutics, Inc. (the “Company”) is filing this Amendment No. 1 (this “Amendment”) to its Annual Report on Form 10-K for the fiscal year ended September 30, 2023, which was originally filed with the Securities and Exchange Commission (“SEC”) on February 15, 2024 (the “Form 10-K”) solely to correct and replace the disclosure in connection with the beneficial ownership of shares and voting power held by certain shareholders, directors, and officers included in Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters. Except for the items described above or contained in this Amendment, this Amendment continues to speak as of the date of the Form 10-K, and does not modify, amend or update any other item or disclosures in the Form 10-K, including the financial information. Accordingly, this Amendment should be read in conjunction with the Form 10-K and the Company’s other filings with the SEC. | ||
| Amendment Flag | true | ||
| Entity, Central Index Key | 0001537561 |