Disclosures

Dongjin Holdings, the largest shareholder, filed an amended major shareholding report reflecting a change in its share pledge contract. The shares pledged under key contracts decreased from 1,096,651 (2.13%) to 878,159 (1.72%), while the total holding of 17,757,724 shares remained unchanged. The ownership ratio rose slightly from 34.54% to 34.84% due to a reduction in total voting shares from treasury stock cancellation. The number of special-related parties decreased from 4 to 3. No actual share transactions occurred; the filing reflects only a pledge contract modification.

Samsung Life Insurance's special account reported a net decrease of 32,729 shares in its Samsung Electronics holdings between May 8 and June 8, 2026, comprising a 40,179-share reduction in common stock partially offset by a 7,450-share increase in preferred stock. The activity reflects routine in-market trading by the special account rather than a strategic stake change, with the largest shareholder group's combined ownership ratio unchanged at 17.33%. Samsung Life's principal account still holds 8.51% of common shares, with affiliates Samsung C&T (5.11%) and Samsung Fire & Marine (1.49%) rounding out the major insider holdings. This is a standard monthly regulatory filing capturing routine portfolio rebalancing within an insurer's special account, not a directional signal on the stock.

A newly appointed non-registered executive (Managing Director) filed an initial ownership report disclosing the purchase of 40 common shares on the open market on June 2, 2026, at 33,950 won per share. The filer, appointed on April 20, 2026, now holds 40 shares, representing 0.00% of the 23,059,202 total shares outstanding. This is a routine initial disclosure following his appointment rather than a material insider transaction. The token-sized position carries negligible signaling value and no meaningful impact on the company's ownership structure.

Vice President Jung Eui Hoon, a non-registered executive, disposed of his entire holding of 2,419 common shares of the company on June 5, 2026 via on-market sale at KRW 61,315 per share. This reduced his ownership from 0.01% to 0% of the 19,798,661 outstanding shares. The transaction value is approximately KRW 148 million, a small absolute amount but notable as the executive now holds zero shares. Insider sell-downs to zero can be read as a mildly negative signal, though the stake size is immaterial relative to the float.

Lee Ji-hoon, a non-registered executive (Managing Director) in the Strategy Team, reported a change in his beneficial ownership of company securities. He purchased 4 additional common shares on the open market on June 2, 2026 at 309,500 KRW per share, increasing his total holdings from 2,529 to 2,533 shares. The ownership ratio remains effectively 0.00% of the 6,648,649,811 total shares outstanding. This is a routine insider disclosure with negligible financial significance, though it may signal mild internal confidence at current price levels.

President Yoon Jang-Hyun, a non-registered executive, purchased 1,890 common shares on the open market on June 4, 2026 at ₩332,000 per share, increasing his total holdings from 1,300 to 3,190 shares. The total transaction value is approximately ₩627 million. While the stake remains effectively 0.00% of the 6.65 billion outstanding shares, insider buying by a sitting president can be read as a mild signal of management confidence. This is a routine ownership change disclosure rather than a material corporate event.

The company signed a single supply contract worth KRW 21.2 billion to provide semiconductor manufacturing equipment to SK hynix. The deal represents 6.04% of the company's most recent annual revenue (KRW 351.1 billion), making it a meaningful order. Payment terms are 90% on equipment delivery (FOB) and 10% after setup completion, with the contract running from June 4, 2026 through January 15, 2027. SK hynix is a recurring customer, having executed similar contracts with the company within the past three years.

Vice President Kim Iee-soo, a non-registered executive serving in the Global Manufacturing Center, reported the on-market sale of 1,213 common shares on May 28, 2026, at ₩310,500 per share. His holdings decreased from 3,964 shares to 2,751 shares, both representing 0.00% of total shares outstanding (6.74 billion). The transaction is a routine insider disposal of a very small position and does not change his ownership ratio in any material way. The filing was triggered by the change in holdings reporting obligation dated June 2, 2026.