SECURITIES AND EXCHANGE COMMISSIONSEC FORM 17-C

CURRENT REPORT UNDER SECTION 17
OF THE SECURITIES REGULATION CODE
AND SRC RULE 17.2(c) THEREUNDER

1. Date of Report (Date of earliest event reported)

Dec 1, 2025

2. SEC Identification Number

CS201718692

3. BIR Tax Identification No.

009-695-754

4. Exact name of issuer as specified in its charter

NEXGEN ENERGY CORP.

5. Province, country or other jurisdiction of incorporation

NCR, PHILIPPINES

6. Industry Classification Code(SEC Use Only)

7. Address of principal office

3RD FLOOR, JTKC CENTRE, 2155 DON CHINO ROCES AVE., MAKATI CITY, PHILIPPINES Postal Code 1230

8. Issuer's telephone number, including area code

(02) 8813-8892 TO 97

9. Former name or former address, if changed since last report

N/A

10. Securities registered pursuant to Sections 8 and 12 of the SRC or Sections 4 and 8 of the RSA

Title of Each Class	Number of Shares of Common Stock Outstanding and Amount of Debt Outstanding
COMMON SHARES	1,190,000,003

11. Indicate the item numbers reported herein

ITEM #9

The Exchange does not warrant and holds no responsibility for the veracity of the facts and representations contained in all corporate disclosures, including financial reports. All data contained herein are prepared and submitted by the disclosing party to the Exchange, and are disseminated solely for purposes of information. Any questions on the data contained herein should be addressed directly to the Corporate Information Officer of the disclosing party.

NexGen Energy Corp.XG

PSE Disclosure Form 4-30 - Material Information/Transactions References: SRC Rule 17 (SEC Form 17-C) and
Sections 4.1 and 4.4 of the Revised Disclosure Rules

Subject of the Disclosure
NexGen Energy Corp.’s (“XG”) wind development arm subsidiary, Airstream Renewables Corp. ("ARC"), was issued three (3) new onshore Wind Energy Service Contracts (WESC) totaling 1.7 GW in projected wind capacity by the Department of Energy.
Background/Description of the Disclosure
The DOE issued the WESC and corresponding Certificates of Registration (COR) for the following wind projects under ARC: 600 MW Pangasinan Onshore Wind Power Project 600 MW Samar Onshore Wind Power Project 500 MW Nueva Ecija Onshore Wind Power Project The first of these notable projects is the Pangasinan Onshore Wind Project. This project boasts a projected capacity of 600MW and covers an extensive area of 13,770 hectares. This project will utilize an 8 km 230kV transmission line to connect to the NGCP 230kV Labrador Substation. The Samar Onshore Wind Project has a projected capacity of 600MW and spans an area of 16,929 hectares. This project will be connected via a 7 km 138kV transmission line to the NGCP 138kV Victoria Substation. The Nueva Ecija Onshore Wind Project on the other hand has a projected capacity of 500MW and covers an area of 9,234 hectares. This project will be connected via a 15 km 230kV line to the NGCP 230kV Sampaloc Substation.
Other Relevant Information
“Securing 1.7 gigawatts of new Wind Energy Service Contracts represents a major step forward in NexGen Energy’s growth strategy and materially strengthens our development pipeline. These three new onshore wind projects—Pangasinan, Samar, and Nueva Ecija—position Airstream Renewables as one of the most competitive large-scale wind developers in the country. Together, they represent around $2.5 billion in prospective investment and lay the foundation for long-term, stable value creation for our stakeholders. We appreciate the Department of Energy’s continued confidence in our capabilities, and we remain focused on disciplined execution, capital efficiency, and building high-quality renewable assets that will deliver strong returns for years to come.” Said Eric Y. Roxas, President of NexGen Energy Corp.