[Amended] Material event report (decision to sell own convertible bonds)

What happened

Material Event Report (Decision to Sell Own Convertible Bonds) THE E&M Co., Ltd.

Amendment Report, September 30, 2026 1. Disclosure document being amended: Decision to Sell Own Convertible Bonds 2. Original submission date of the disclosure document: May 18, 2026 3. Amended items

Item: 9. (Expected) receipt date of sale proceeds Reason for amendment: Change in sale proceeds receipt date Before: October 30, 2026 After: December 31, 2026

Item: 13. Other matters material to investment decisions, (2) Before: "(2) The above item 9, (expected) receipt date of sale proceeds, is based on the final payment date, and the payment schedule is as follows: - Down payment: KRW 316,050,000 (2026.05.18) - Interim payment: KRW 1,580,250,000 (2026.09.30) - Final payment: KRW 4,424,700,000 (2026.10.30)" After: "(2) The above item 9, (expected) receipt date of sale proceeds, is based on the final payment date, and the payment schedule is as follows: - Down payment: KRW 316,050,000 (2026.05.18) - Interim payment: KRW 1,580,250,000 (2026.11.30) - Final payment: KRW 4,424,700,000 (2026.12.31)"

Material Event Report / Korea Exchange Reporting Obligation To the Financial Services Commission / Korea Exchange May 18, 2026

Company name: THE E&M Co., Ltd. CEO: Shin Hwan-ryul Head office: 41 Gangnam-daero 101an-gil, Seocho-gu, Seoul Tel: 02-2088-8222 Website: http://www.theenm.com Preparer: Director Bae Moon-sub, Tel 02-2088-8222

Decision to Sell Own Convertible Bonds

1. Type of bond: Series 20, unregistered bonds with coupon, unsecured private-placement convertible bonds 2. Bond issuance date: May 20, 2025 3. Bond issuance method: Private placement 4. Bond maturity date: May 20, 2028 5. Total face value (electronically registered) of the bonds (KRW): 8,000,000,000 6. Details of acquisition of the bonds to be sold prior to maturity Face value (electronically registered) of bonds to be sold (KRW): 3,000,000,000 Acquisition amount (KRW): 3,205,435,449 Background of acquisition: Call option exercised through agreement with the bondholder

7. Sale decision date: May 18, 2026 8. Sale amount Amount (KRW): 6,321,000,000 Basis for calculation: Determined through negotiation with the buyer, taking into account the company's need for funding given its overall circumstances and conversion requests on the convertible bonds.

9. (Expected) receipt date of sale proceeds: December 31, 2026 10. Purpose of sale: Fundraising through sale of own convertible bonds 11. Conversion details Conversion ratio (%): 100 Conversion price as of report date (KRW/share): 1,000 Type of shares to be issued upon conversion: THE E&M Co., Ltd. registered common shares Number of shares: 3,000,000 Ratio to total shares outstanding (%): 7.42 Conversion request period: Start date May 20, 2026; End date April 20, 2028

12. Whether subject to Fair Trade Commission reporting: Not applicable 13. Other matters material to investment decisions (1) This disclosure concerns the resale of KRW 3.0 billion (face value) out of the KRW 4.0 billion Series 20 unregistered, coupon-bearing, unsecured private-placement convertible bonds that the company acquired before maturity on May 18, 2026. (2) The above item 9, (expected) receipt date of sale proceeds, is based on the final payment date, and the payment schedule is as follows: - Down payment: KRW 316,050,000 (2026.05.18) - Interim payment: KRW 1,580,250,000 (2026.11.30) - Final payment: KRW 4,424,700,000 (2026.12.31) (3) The ratio to total shares outstanding under item 11 above, "Conversion details," was calculated by including the shares to be issued upon this conversion in the total number of voting shares outstanding as of the sale decision date.

[Matters Concerning the Buyers] Buyer: Shin Hwan-ryul; Relationship with the company or largest shareholder: largest shareholder (self); Basis for selection: Selected considering the investor's intent, payment capacity and timing, etc., for the purpose of achieving the company's management objectives and promptly raising necessary funds; Transaction history and plans within 6 months before/after the sale decision: -; Face value of bonds purchased (KRW): 808,000,000; Note: -

Buyer: Navis Fidelis No. 5 Association; Relationship: related party of the largest shareholder; Basis for selection: same as above; Face value of bonds purchased (KRW): 470,000,000; Note: -

Buyer: Vioras Investment Association; Relationship: -; Basis for selection: same as above; Face value of bonds purchased (KRW): 1,722,000,000; Note: -

[Where the Buyers Include the Company's Largest Shareholder or a Related Party] Shin Hwan-ryul; Relationship with largest shareholder: self; Shares held at time of convertible bond issuance: 2,459,298 shares (10.11%); Shares to be issued upon conversion: 808,000 shares (1.99%); Note: - Navis Fidelis No. 5 Association; Relationship: related party; Shares held at time of issuance: 1,432,010 shares (5.89%); Shares to be issued upon conversion: 470,000 shares (1.16%); Note: - * Among the shares to be issued upon conversion, the "ratio" is calculated by including the shares to be issued upon conversion in the total number of issued shares as of the sale decision date.

[Where the Buyers Include a Corporation or Organization] (1) Basic information Name: Navis Fidelis No. 5 Association; Number of investors: 11; CEO (representative member): Shin Hwan-ryul, 39%; Managing member (operating member): -; Largest shareholder (largest investor): Shin Hwan-ryul, 39%

(2) Key financial matters for the most recent fiscal year (Unit: KRW million) Fiscal year 2025, fiscal year-end December: Total assets 16,083; Revenue -; Total liabilities -; Net income (loss) -; Total equity 16,083; External auditor -; Capital stock 16,083; Audit opinion -

[Where the Buyers Include a Corporation or Organization] (1) Basic information Name: Vioras Investment Association; Number of investors: 2; CEO (representative member): Park Sun-hee, 51%; Managing member (operating member): Park Sun-hee, 51%; Largest shareholder (largest investor): -

(2) Key financial matters for the most recent fiscal year (Unit: KRW million) Fiscal year 2025, fiscal year-end December: Total assets 1,000; Revenue -; Total liabilities -; Net income (loss) -; Total equity 1,000; External auditor -; Capital stock 1,000; Audit opinion -