General form of registration statement for all companies including face-amount certificate companies

Document And Entity Information

Document And Entity Information
9 Months Ended
Jun. 30, 2022
Document Information [Line Items]  
Entity Central Index Key 0001537561
Entity Registrant Name Arch Therapeutics, Inc.
Amendment Flag true
Document Fiscal Period Focus Q3
Document Fiscal Year Focus 2022
Document Type S-1/A
Entity Incorporation, State or Country Code NV
Entity Tax Identification Number 46-0524102
Entity Address, Address Line One 235 Walnut St., 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
Entity Filer Category Non-accelerated Filer
Entity Small Business true
Entity Emerging Growth Company false
Amendment Description This Amendment No. 1 to the Registration Statement on Form S-1 filed with the Securities and Exchange Commission on August 19, 2022 (File No. 333-267004) (this "Amendment No. 1") is being filed solely (i) to file the Inline XBRL data to the Financial Statements and Notes thereto and (ii) to update the Consolidated Statements of Cash Flows (Unaudited) in the Financial Statements to remove the six-month period ended March 31, 2022 and 2021 and to include the nine-month period ended June 30, 2022 and 2021. Accordingly, this Amendment No. 1 consists solely of the facing page, Part II, Item 16, and the signature page. This Amendment No. 1 does not modify any provision of the prospectus that forms a part of the Registration Statement. Accordingly, a preliminary prospectus has been omitted.