[424B3] DevvStream Corp. Prospectus Filed Pursuant to Rule 424(b)(3)

Rhea-AI Filing Summary

DevvStream Corp. filed Prospectus Supplement No. 11 to its Form S-1, covering the resale of up to 114,968,270 common shares. The supplement updates the prospectus with information from a Current Report on Form 8‑K filed on November 3, 2025. DevvStream’s common shares trade on Nasdaq under “DEVS”; the closing price was $1.72 on October 31, 2025.

The 8‑K discloses a fourth amendment with Devvio, Inc. that settles existing rights and obligations under their Strategic Partnership Agreement (other than confidentiality and the new terms). The amendment creates a Strategic Token Program under which DevvStream agrees to purchase DevvE tokens in 2025 for $1,000,000 and in each of 2026 and 2027. In exchange, DevvStream receives warrants to acquire additional DevvE tokens equal to 25% of the Purchase Amount, exercisable at the same 10‑day VWAP used to price the purchased tokens.

Insights

Securities & Capital Markets Analyst

Resale supplement remains administrative; amendment adds token purchases with 25% warrants.

DevvStream updated its S‑1 prospectus via a 424(b)(3)/(c) supplement that continues to cover the resale of up to 114,968,270 common shares. This action is administrative and does not itself change capitalization or proceeds; activity depends on selling holders.

The accompanying 8‑K details a fourth amendment with Devvio, settling prior obligations and establishing a Strategic Token Program. DevvStream commits to a $1,000,000 DevvE token purchase in 2025, and purchases in 2026 and 2027, receiving warrants equal to 25% of each Purchase Amount, exercisable at the same 10‑day VWAP used for pricing.

Key mechanics include the settlement of legacy rights and VWAP‑based warrant exercise pricing. Actual impact will hinge on executed token purchases and any subsequent warrant exercises disclosed in future filings.

Filed Pursuant to Rule 424(b)(3) and Rule 424(c)

Registration Statement No. 333-285728

November 3, 2025

PROSPECTUS SUPPLEMENT NO. 11

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”) of DevvStream Corp., a company existing under the Laws of the Province of Alberta, Canada (the “Company”), which forms a part of the Company’s Registration Statement on Form S-1 (No. 333-285728). This prospectus supplement is being filed to update and supplement the information included or incorporated by reference in the Prospectus with the information contained in the Company’s Current Report on Form 8-K, filed with the Securities and Exchange Commission (the “SEC”) on November 3, 2025. This prospectus supplement should be read in conjunction with the Prospectus, which is to be delivered with this prospectus supplement.

Shares of our Common Shares are listed on the Nasdaq Stock Market LLC (“Nasdaq”) under the symbol “DEVS”. On October 31, 2025, the closing price of our Common Shares was $1.72.

Investing in the Company’s Common Shares involves risks. See “Risk Factors” beginning on page 9 of the Prospectus and 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 the adequacy or accuracy of this prospectus. Any representation to the contrary is a criminal offense.

The date of this Prospectus Supplement No. 11 is November 3, 2025.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or Section 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): October 28, 2025

DEVVSTREAM CORP.

(Exact name of registrant as specified in its charter)

Alberta, Canada	001-40977	86-2433757
(State or other jurisdiction of incorporation or organization)	(Commission File Number)	(I.R.S. Employer Identification No.)

2108 N St., Suite 4254 Sacramento, California (Address of principal executive offices) 95816
(Zip Code)

(647) 689-6041

(Registrant’s telephone number, including area code)

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the Registrant under any of the following provisions:

☐ 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))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common shares	DEVS	The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 or Rule 12b-2 of the Securities Exchange Act of 1934.

Emerging growth company ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 1.01 Entry into a Material Definitive Agreement.

On October 28, 2025, DevvStream Inc., a corporation organized under the laws of Delaware “DevvStream”) and a wholly owned subsidiary of DevvStream Corp., an Alberta company (the “Company”), and Devvio, Inc., a corporation organized under the laws of Delaware  (“Devvio”) entered into a fourth amendment (the “Amendment”) to that Strategic Partnership Agreement dated November 28, 2021, as amended by (i) Amendment No. 1 dated November 30, 2021, (ii) Amendment No. 2 dated September 12, 2023, and (iii) Amendment No. 3 dated July 8, 2024 (collectively, the “Strategic Partnership Agreement”).

The Amendment provides that the existing rights and obligations under the Strategic Partnership Agreement, with the exception of confidentiality obligations and the obligations set forth in the Amendment, are fully settled, discharged and of no further force or effect. The Amendment establishes a Strategic Token Program between the parties whereby DevvStream agrees to purchase DevvE tokens annually in the amount of $1,000,000 in 2025 and $1,270,00 in each of 2026 and 2027 (each such amount, the “Purchase Amount”). In exchange, and as part of the Strategic Token Program, DevvStream shall receive warrants to acquire additional DevvE tokens equal to twenty-five percent (25%) of the Purchase Amount which shall be exercisable at the same 10-day VWAP price that was used to determine the number of tokens purchased.

The foregoing summary of the Amendment is not complete and is qualified in its entirety by reference to the Amendment, which is filed herewith as Exhibit 10.1 and incorporated by reference herein.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits:

Exhibit No.		Description
10.1		Fourth Amendment to Strategic Partnership Agreement.
104		Cover 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 on its behalf by the undersigned hereunto duly authorized.

Dated: November 3, 2025
	DEVVSTREAM CORP.
	By:	/s/ David Goertz
	Name:	David Goertz
	Title:	Chief Financial Officer

FAQ

What does DevvStream (DEVS) register in Prospectus Supplement No. 11?

It updates the S‑1 prospectus covering the resale of up to 114,968,270 common shares.

What new agreement terms with Devvio are disclosed for DEVS?

A fourth amendment settles prior obligations and creates a Strategic Token Program for DevvE token purchases plus warrants.

How much will DevvStream purchase in DevvE tokens in 2025?

DevvStream agrees to purchase $1,000,000 of DevvE tokens in 2025.

What warrant coverage does DevvStream receive under the token program?

Warrants to acquire additional DevvE tokens equal to 25% of each Purchase Amount, exercisable at the same 10‑day VWAP used for pricing.

What is DevvStream’s Nasdaq symbol and recent price?

The symbol is DEVS; the closing price was $1.72 on October 31, 2025.

Does the amendment fully terminate the prior Strategic Partnership Agreement?

It states existing rights and obligations are settled and of no further force or effect, except confidentiality and the new amendment terms.