Executive Securities Ownership Report — Day Trade in Preferred Shares — Samsung Electronics

Summary

A non-registered executive (Managing Director Lee Gyoo-chul, Development Team) filed a change report on his ownership of company securities as of May 6, 2026. He bought 102 preferred shares at KRW 185,000 and sold the same 102 shares at KRW 183,400 on the same day, resulting in a small intraday loss. After the trades, his holdings returned to 243 common shares and 0 preferred shares (down from 102), with the common-share count unchanged. The transaction is immaterial in size (0.00% of outstanding shares) and reflects a personal trading event rather than any strategic insider action.

Historical Impact

10 past Insider Ownership Change · ≈ Form 4 events at Samsung Electronics

Median +5d

-9.87%

Range

-16.53% to -6.85%

Positive outcomes

0/10

Filed	P₀	P₊₅	+5d
Jul 1, 2026	₩314,500	₩285,500	-9.22%
Jun 30, 2026	₩334,000	₩291,500	-12.72%

Full Translation

Report on Ownership of Specified Securities by Executives and Major Shareholders 6.1 Samsung Electronics Co., Ltd. 2026-05-06 Report on Ownership of Specified Securities by Executives and Major Shareholders To: Securities and Futures Commission To: Korea Exchange Date reporting obligation arose: May 6, 2026 Report preparation reference date: May 6, 2026 * The reporter hereby confirms that, as of the reference date, the ownership status of his specified securities has been accurately prepared in accordance with applicable laws and preparation guidelines, and that there are no false statements or omissions of material facts. Reporter: Lee Gyoo-chul 1. Information on the Issuing Company - Company name: Samsung Electronics Co., Ltd. - Corporation type: KOSPI-listed company - Company code: 005930 - Total issued shares: 6,735,612,586 2. Information on the Reporter - Report type: Change - Reporter category: Individual (domestic) - Name (Korean): Lee Gyoo-chul - Name (Hanja/English): 李奎澈 (Lee Gyoochul) - Date of birth / business registration no.: 730628 - Address (to eup/myeon/dong level): Yeoul-dong, Dongtan-gu, Hwaseong-si - Relationship to issuer: Executive (registration status: non-registered executive) - Position: Managing Director (Sangmu) - Appointment date: 2023.11.29 - Retirement date: - - Major shareholder: - Business contact: - Affiliated company: Samsung Electronics Co., Ltd. - Department: Development Team - Position: Managing Director - Phone: 010-420***** - Name: Lee Gyoo-chul - Fax: 031-277**** - Email: ******l.lee@samsung.com 3. Ownership Status of Specified Securities A. Number and Ratio of Specified Securities Held | Reference date | Specified securities (shares) | Ratio (%) | Common shares (shares) | Ratio (%) | | Previous report (2026.05.06) | 243 | 0 | 243 | 0 | | This report (2026.05.06) | 243 | 0.00 | 243 | 0.00 | | Change | 0 | 0.00 | 0 | 0.00 | * Shareholdings detail: Samsung Electronics common 243 shares, Samsung Electronics preferred 102 shares, total 345 shares. ** On 2026.05.06, 102 Samsung Electronics preferred shares were bought (at KRW 185,000) and sold (at KRW 183,400). B. Holdings by Type of Specified Securities | Type | Common shares (A) | Warrant certificates (B) | Convertible bonds (C) | Bonds with warrants (D) | Profit-participating bonds (E) | Exchangeable bonds (F) | Depository receipts (G) | Other (H) | Total (I) | | Shares | 243 | - | - | - | - | - | - | - | 243 | | Ratio (%) | - | - | - | - | - | - | - | - | 0.00 | - Total issued shares (J): 6,735,612,586 - Non-share specified securities (B+C+D+E+F+G+H): 0 - Ownership ratio of specified securities [(A+I) / (J+I-(F+G+H))] × 100: 0.00% - Ownership ratio of common shares (A/J) × 100: 0.00% * For exchangeable bonds where the underlying is stock, and for depository receipts/derivative-linked securities where the underlying asset is stock, the underlying is excluded from the denominator when calculating the ownership ratio. C. Detailed Change History | Reason | Change date* | Type of specified security | Pre-change shares | Change | Post-change shares | Acquisition/disposal unit price (KRW)** | Note | Trading plan report date | | On-market purchase (+) | 2026.05.06 | Preferred | 243 | +102 | 345 | 185,000 | - | 2026.05.06 | | On-market sale (-) | 2026.05.06 | Preferred | 345 | -102 | 243 | 183,400 | - | 2026.05.06 | | Total | | | 345 | 0 | 243 | - | - | | * For trades made on a securities exchange, this refers to the contract settlement date. ** For non-share securities, this refers to the exercise (conversion/exchange) price of the security, or the trading unit price of the shares acquired/disposed of through exercise of the security's rights; amounts in parentheses refer to the trading unit price of the security itself. *** Shareholdings detail: Samsung Electronics common 243 shares, Samsung Electronics preferred 102 shares, total 345 shares. **** On 2026.05.06, 102 Samsung Electronics preferred shares were bought (at KRW 185,000) and sold (at KRW 183,400).