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

Document And Entity Information

v3.23.3
Document And Entity Information
 12 Months Ended
Sep. 30, 2022
Document Information [Line Items]  
Document Type S-1/A
Entity Registrant Name ARCH THERAPEUTICS, INC.
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 registration statement contains two prospectuses:   • A prospectus that covers the offer and sale by the registrant of up to $15,525,000 of Units (consisting of $15,525,000 of shares of Common Stock and Investor Warrants to purchase up to $15,525,000 of shares of Common Stock), up to $13,500,000 of Pre-Funded Units (consisting of Pre-Funded Warrants to purchase up to $13,500,000 of shares of Common Stock and Investor Warrants to purchase up to $13,500,000 of shares of Common Stock), up to $13,500,000 of shares of Common Stock underlying the Pre-Funded Warrants, up to $15,525,000 of shares of Common Stock underlying the Investor Warrants, Underwriter Warrants to purchase up to $970,313 of shares of Common Stock and up to $970,313 of shares of Common Stock underlying the Underwriter Warrants (the “Company Prospectus”); and   • A prospectus that covers the resale of (i) 3,364,527 shares of Common Stock, (ii) up to 90,272,681 shares of Common Stock underlying warrants and (iii) up to 930,037 shares of Common Stock issuable upon conversion of convertible promissory notes (the “Resale Prospectus”).   The Company Prospectus immediately follows this Explanatory Note, and the Resale Prospectus immediately and sequentially follows the Company Prospectus.
Entity Central Index Key 0001537561
Document Fiscal Year Focus 2022
Document Fiscal Period Focus FY
Amendment Flag true