Announcement by Ningbo Jintian Copper Industry (Group) Co., Ltd. on Interest Payment for "Jintian Convertible Bond"

Securities Code: 601609 Securities Abbreviation: Jintian Co., Ltd. Announcement No.: 2026-015

Bond Code: 113046 Bond Abbreviation: Jintian Convertible Bond

Ningbo Jintian Copper (Group) Co., Ltd.

Announcement Regarding Interest Payment for “Jintian Convertible Bond”

The company’s Board of Directors and all directors guarantee that this announcement contains no false records, misleading statements, or major omissions, and assume legal responsibility for its authenticity, accuracy, and completeness.

Key Information:

● Convertible Bond Interest Payment Record Date: March 20, 2026

● Convertible Bond Ex-Dividend Date: March 23, 2026

● Convertible Bond Interest Payment Date: March 23, 2026

● Interest per 100 yuan (including tax): 1.80 yuan

Ningbo Jintian Copper (Group) Co., Ltd. (hereinafter referred to as “the Company”) publicly issued convertible corporate bonds (hereinafter referred to as “Jintian Convertible Bonds”) on March 22, 2021. Interest for the period from March 22, 2025, to March 21, 2026, will begin to be paid on March 23, 2026 (original interest payment date March 22, 2026, is a rest day, postponed to the next trading day). According to the provisions of the “Prospectus for the Public Offering of Convertible Corporate Bonds by Ningbo Jintian Copper (Group) Co., Ltd.” (hereinafter referred to as “the Prospectus”), the relevant matters are announced as follows:

1. Basic Information about Jintian Convertible Bonds

(1) Bond Name: Convertible Corporate Bonds of Ningbo Jintian Copper (Group) Co., Ltd.

(2) Bond Abbreviation: Jintian Convertible Bond

(3) Bond Code: 113046

(4) Bond Type: Convertible bonds that can be converted into A-shares of the company. These bonds and the future converted A-shares will be listed on the Shanghai Stock Exchange.

(5) Issuance Scale: RMB 1,500 million (15 million bonds, 1.5 million lots)

(6) Face Value and Issue Price: Each convertible bond has a face value of RMB 100, issued at face value.

(7) Bond Term: The term of these convertible bonds is 6 years from the date of issuance, from March 22, 2021, to March 21, 2027.

(8) Bond Interest Rates: Year 1: 0.30%; Year 2: 0.50%; Year 3: 0.80%; Year 4: 1.50%; Year 5: 1.80%; Year 6: 2.00%.

(9) Principal and Interest Payment Terms and Methods:

The bonds will pay interest once annually, with all principal and last year’s interest for unconverted bonds due at maturity.

1. Annual Interest Calculation

Annual interest refers to the interest accrued each year on the total face amount of the bonds held by the bondholder, starting from the issuance date. The formula is:

Annual Interest = Total face amount held × applicable annual coupon rate

2. Interest Payment Method

(1) The bonds pay interest once per year, starting from the issuance date.

(2) Interest Payment Date: Each year, on the anniversary of the issuance date. If this date falls on a statutory holiday or rest day, it will be postponed to the next working day, with no additional interest accrued during the postponement. Each two consecutive interest dates define one interest accrual year.

(3) Record Date for Interest Rights: The trading day before each interest payment date. The company will pay the interest within five trading days after each interest payment date. Bonds that have been converted or applied for conversion into company stock before or on the record date will no longer accrue interest.

Interest income payable to bondholders is subject to personal income tax, which is borne by the bondholders. Within five working days after the bond’s maturity date, the company will repay all principal of bonds not converted and the last year’s interest. Matters related to interest and dividend attribution during the conversion year will be determined by the company’s Board of Directors according to relevant laws, regulations, and Shanghai Stock Exchange rules.

(10) Conversion Period:

The conversion period begins six months after the end of the bond issuance (from September 27, 2021) and ends on the maturity date (March 21, 2027). If statutory holidays or rest days occur, the period extends to the next working day; interest payment during the extension will not accrue additional interest.

(11) Conversion Price:

Initial conversion price is RMB 10.95 per share. Due to the company’s 2020 annual equity distribution and 2021 restricted stock incentive plan, the conversion price was adjusted to RMB 10.75 per share starting June 23, 2021, as detailed in the company’s announcement on June 17, 2021 (Announcement No.: 2021-065). Further adjustments occurred on June 15, 2022, to RMB 10.64; on June 14, 2023, to RMB 10.55; on June 6, 2024, to RMB 10.43; and on June 5, 2025, to RMB 10.32, following share repurchases and distributions, as detailed in respective announcements. As of the date of this announcement, the latest conversion price is RMB 10.32 per share.

(12) Credit Rating:

The company’s main credit rating is “AA+,” and the “Jintian Convertible Bond” rating is also “AA+,” with a stable outlook.

(13) Rating Agency: Shanghai New Century Credit Rating & Investment Service Co., Ltd.

(14) Guarantee: This issuance is unsecured.

(15) Listing Date and Place: Listed on the Shanghai Stock Exchange on April 12, 2021.

(16) Registration Institution: China Securities Depository and Clearing Co., Ltd., Shanghai Branch.

(17) Sponsoring Institution: Orient Securities Co., Ltd.

2. Interest Payment Plan

According to the Prospectus, this interest payment is for the fifth year of the “Jintian Convertible Bond,” covering the period from March 22, 2025, to March 21, 2026. The annual coupon rate is 1.80% (including tax), meaning each RMB 100 face value bond will pay RMB 1.80 (including tax).

3. Record Date, Ex-Dividend Date, and Interest Payment Date

(1) Record Date for Interest: March 20, 2026

(2) Ex-Dividend Date: March 23, 2026

(3) Interest Payment Date: March 23, 2026

4. Interest Payment Recipients

All “Jintian Convertible Bond” holders registered with China Securities Depository and Clearing Co., Ltd., Shanghai Branch, after the market close on March 20, 2026, are eligible to receive interest.

5. Interest Payment Method

(1) The company has signed an agency agreement with China Securities Depository and Clearing Co., Ltd., Shanghai Branch, entrusting it with bond interest payment and redemption. If the company fails to transfer the full interest payment to the designated bank account of the agency, the agency will terminate the service, and subsequent payments will be handled by the company, with details announced accordingly. The company will transfer the full interest amount to the designated bank account two trading days before the interest payment date.

(2) After receiving the funds, China Securities Depository and Clearing Co., Ltd. will distribute the interest to the designated payment institutions (securities firms or other approved institutions), and investors can collect interest from these institutions.

6. Taxation on Interest Income for Investors

(1) According to the “Personal Income Tax Law of the People’s Republic of China” and related regulations, individual investors must pay a 20% personal income tax on interest income from bonds. For each RMB 100 face value bond, the gross interest is RMB 1.80, and the net interest after tax is RMB 1.44. The tax will be withheld and paid by the payment institutions.

(2) Resident enterprises holding the bonds are responsible for paying corporate income tax on interest income, with the actual paid amount being RMB 1.80 per bond.

(3) Non-resident enterprises (including QFII, RQFII) holding the bonds are exempt from enterprise income tax on interest income from January 1, 2026, to December 31, 2027, according to relevant notices. Interest paid to these entities will be RMB 1.80 per bond, tax included. This exemption does not apply to foreign institutions with a physical presence in China.

7. Contact Information

(1) Issuer: Ningbo Jintian Copper (Group) Co., Ltd.

Address: No. 1 Chengxi West Road, Cicheng Town, Ningbo, Zhejiang

Department: Secretary Office

Phone: 0574-83005059

(2) Sponsoring Institution: Orient Securities Co., Ltd.

Address: 24th Floor, No. 318 Zhongshan South Road, Oriental International Financial Plaza, Shanghai

Representatives: Wang Weifeng, Shi Jian

Phone: 021-23153888

(3) Custodian: China Securities Depository and Clearing Co., Ltd., Shanghai Branch

Address: No. 188 Yanggao South Road, Pudong New Area, Shanghai

Phone: 4008-058-058

This announcement is hereby issued.

Board of Directors Ningbo Jintian Copper (Group) Co., Ltd. March 16, 2026