DevvStream Corp美股招股说明书(2025-11-24版)

November 24, 2025 DEVVSTREAM CORP.UP TO 114,968,270 COMMON SHARES This prospectus supplement amends the prospectus dated March 12, 2025 (as supplemented to date, the “Prospectus”) ofDevvStream Corp., a company existing under the Laws of the Province of Alberta, Canada (the “Company”), which forms a part ofthe Company’s Registration Statement on Form S-1 (No. 333-285728). This prospectus supplement is being filed to update andsupplement the information included or incorporated by reference in the Prospectus with the information contained in the Company’s Shares of our Common Shares are listed on the Nasdaq Stock Market LLC (“Nasdaq”) under the symbol “DEVS”. OnNovember 21, 2025, the closing price of our Common Shares was $1.39. Investing in the Company’s Common Shares involves risks. See “Risk Factors” beginning on page 9 of the Prospectusand under similar headings in any amendments or supplements to the Prospectus. Neither the SEC nor any other regulatory body has approved or disapproved of these securities or passed upon theadequacy or accuracy of this prospectus. Any representation to the contrary is a criminal offense. The date of this Prospectus Supplement No. 15 is November 24, 2025. FORM 8-K CURRENT REPORTPursuant to Section 13 or Section 15(d) DEVVSTREAM CORP. (Exact name of registrant as specified in its charter) ☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period forcomplying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.☐ Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing. On November 18, 2025, DevvStream Corp. (the “Company”) received a notification letter (the “Notice”) from the ListingQualifications Department of The Nasdaq Stock Market LLC (“Nasdaq”) notifying the Company that its net income from continuingoperations had fallen below the minimum requirement for continued listing on the Nasdaq Capital Market under Nasdaq Listing Rule5550(b)(3) (the “Minimum Net Income Requirement”) and that the Company does not meet the alternatives of market value oflisted securities or stockholders’ equity (collectively with the Minimum Net Income Requirement, the “Continued Listing If Nasdaq accepts the Compliance Plan, Nasdaq may grant an extension of up to 180 calendar days from the date of theNotice for the Company to evidence compliance. If Nasdaq does not accept the Compliance Plan, then the Nasdaq staff will providewritten notification to the Company that its common stock will be subject to delisting. The Company may appeal Nasdaq’s rejection ofthe Compliance Plan and any such determination to delist its securities, but there can be no assurance that any such appeal would be Neither the Notice nor the Company’s non-compliance have an immediate effect on the listing or trading of the Company’scommon stock, which will continue to trade on The Nasdaq Capital Market under the symbol “DEVS.” Item 9.01Financial Statements and Exhibits. (d) Exhibits: Exhibit No. 104Cover page Interactive Data File (embedded in the cover page formatted in Inline XBRL) SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed onits behalf by the undersigned hereunto duly authorized. Dated:November 24, 2025 DEVVSTREAM CORP. By:/s/ David GoertzName:David GoertzTitle:Chief Financial Officer