Completion report on merger, etc. (merger)

What happened

Completion Report on Merger, etc. (Merger) Hanjung NCS Co., Ltd. To the Governor of the Financial Supervisory Service September 30, 2026

Company name: Hanjung NCS Co., Ltd. CEO: Kim Hwan-sik, Kim Sang-gyun Head office: 379 Yeongcheonsandan-ro, Yeongcheon-si, Gyeongsangbuk-do (Chaesin-dong) Tel: 054-337-5050 Website: http://www.hjncs.com Preparer: Executive Director Heo Cheok, Tel 054-337-5050

I. Schedule Board resolution date (merger decision): July 29, 2026 (Wed) Material event report submission date: July 29, 2026 (Wed) Public notice of record date for shareholder determination: July 29, 2026 (Wed) Merger agreement date: July 30, 2026 (Thu) Shareholder record date (*1): August 13, 2026 (Thu) Small-scale merger public notice: August 13, 2026 (Thu) Period for receiving notice of objection to merger: Start August 13, 2026 (Thu); End August 27, 2026 (Thu) Board resolution approving merger (*2): August 28, 2026 (Fri) Public notice of creditor objection submission: August 28, 2026 (Fri) Creditor objection period: Start August 29, 2026 (Sat); End September 29, 2026 (Tue) Merger effective date: September 30, 2026 (Wed) Board resolution for merger completion report (*3): September 30, 2026 (Wed) Public notice of merger completion report: September 30, 2026 (Wed) Expected merger registration date: October 1, 2026 (Thu)

(*1) The record date for determining shareholders entitled to object to the small-scale merger of the merging company. (*2) Hanjung NCS Co., Ltd., the merging company, qualifies as a small-scale merger, so the shareholders' meeting for merger approval is replaced by board resolution. (*3) The merger completion report meeting will be replaced by a public notice procedure pursuant to board resolution under Article 526, Paragraph 3 of the Commercial Act.

II. Changes in major shareholders' equity stake This is an absorption-type merger conducted while Hanjung NCS Co., Ltd., the merging company, holds 100% of the shares of HD-C Co., Ltd., the merged company. Since the merger ratio is 1:0 and no new shares are issued (merger without capital increase), there is no change in the equity stakes of major shareholders, etc. before and after the merger.

III. Exercise of appraisal rights Since this merger is a small-scale merger under Article 527-3 of the Commercial Act, appraisal rights are not granted. Pursuant to Article 527-3 of the Commercial Act, notices of objection to the merger were received from August 13, 2026 to August 27, 2026; a total of 835 shareholders notified their objection to the merger, representing a total of 64,030 objecting shares (0.7% of total shares issued).

IV. Creditor protection matters Hanjung NCS Co., Ltd. (surviving company) and HD-C Co., Ltd. (dissolved company) each published a public notice of creditor objection submission on August 29, 2026. No creditors submitted objections during the creditor objection period (August 29, 2026 - September 29, 2026), and no decision has been made to repay debts or provide significant collateral in connection with this matter.

V. Status of related litigation As of the date of this report, no litigation has been filed that could affect the validity of this merger, etc.

VI. Matters concerning allotment of new shares, etc. Hanjung NCS Co., Ltd., the merging company, holds 100% of the shares of HD-C Co., Ltd., the merged company, and conducted an absorption-type merger with a merger ratio of 1:0. Since this merger does not involve the issuance of new shares (merger without capital increase), there are no new shares issued or allotment details resulting from the merger.

VII. Summary financial information before and after the merger, etc. (Unit: KRW million) Current assets: Hanjung NCS (pre-merger) 66,188; HD-C 6,266; Hanjung NCS (post-merger) 69,534 Non-current assets: Hanjung NCS (pre-merger) 190,723; HD-C 3,214; Hanjung NCS (post-merger) 185,634 Total assets: Hanjung NCS (pre-merger) 256,911; HD-C 9,480; Hanjung NCS (post-merger) 255,167 Current liabilities: Hanjung NCS (pre-merger) 94,737; HD-C 6,828; Hanjung NCS (post-merger) 98,597 Non-current liabilities: Hanjung NCS (pre-merger) 55,715; HD-C 4,661; Hanjung NCS (post-merger) 55,710 Total liabilities: Hanjung NCS (pre-merger) 150,452; HD-C 11,489; Hanjung NCS (post-merger) 154,307 Capital stock: Hanjung NCS (pre-merger) 4,756; HD-C 2,000; Hanjung NCS (post-merger) 4,756 Capital surplus: Hanjung NCS (pre-merger) 50,297; HD-C (12); Hanjung NCS (post-merger) 50,297 Capital adjustments: Hanjung NCS (pre-merger) -; HD-C -; Hanjung NCS (post-merger) (5,599) Accumulated other comprehensive income: Hanjung NCS (pre-merger) 13,606; HD-C -; Hanjung NCS (post-merger) 13,606 Retained earnings (accumulated deficit): Hanjung NCS (pre-merger) 37,801; HD-C (3,997); Hanjung NCS (post-merger) 37,801 Total equity: Hanjung NCS (pre-merger) 106,459; HD-C (2,009); Hanjung NCS (post-merger) 100,860 Total liabilities and equity: Hanjung NCS (pre-merger) 256,911; HD-C 9,480; Hanjung NCS (post-merger) 255,167

Note 1) The above summary financial information was prepared as of June 30, 2026, and may differ from the statement of financial position as of the merger effective date of September 30, 2026. Note 2) The above post-merger financial statements have not been audited (or reviewed) by an external auditor and may change depending on the results of the external auditor's future audit (review).