devvstream corp美股招股说明书(2025-12-04版)

December 4, 2025 PROSPECTUS SUPPLEMENT NO. 17 DEVVSTREAM CORP.UP TO 114,968,270 COMMON SHARES This prospectus supplement amendstheprospectus 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 of theCompany’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”. OnDecember 3, 2025, the closing price of our Common Shares was $1.90. 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. 17 is December 4, 2025. UNITED STATES 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)) Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 orRule 12b-2 of the Securities Exchange Act of 1934. 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.☐ Item 8.01.Other Events. On December 4, 2025, DevvStream Corp. (the “Company”) issued a press release announcing that Southern EnergyRenewables Inc. (“Southern”), a U.S.-based producer of low-cost fuels made from biomass, with a flagship Louisiana project thatplans to utilize regional wood-waste biomass to deliver green methanol and carbon-negative sustainable aviation fuel (“SAF”),announced that the Louisiana Community Development Authority (“LCDA”) approved a resolution authorizing the issuance, subjectto further approvals, of up to $402 million of Louisiana Local Government Environmental Facilities and Community DevelopmentAuthority Revenue Bonds in support of Southern’s planned biomass‑to‑fuel facility in Louisiana. The Company and Southern A copy of the press release is filed as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein byreference, and the foregoing description of the press release is qualified in its entirety by reference to such exhibit. (d) Exhibits: 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: December 4, 2025 DEVVSTREAM CORP. By:/s/ Sunny TrinhName:Sunny Trinh