Executive Stock Ownership Report: Director Choi In-su Initial Filing — Samsung Electronics

Summary

Samsung Electronics non-registered executive (Senior Managing Director) Choi In-su filed an initial report of specified securities ownership, disclosing 1,178 common shares as of June 1, 2026. The filing details 15 transactions between October 27, 2025 and May 28, 2026, including open-market purchases, sales, and treasury stock bonuses. Notably, on the May 28 reporting trigger date, he sold 293 shares at 302,000 won, then bought 350 shares at 301,000 won and 55 shares at 291,500 won the same day. The ownership ratio is just 0.00% of total shares outstanding (6.74 billion), reflecting a routine insider disclosure with negligible signal value. The transactions show active trading around recent price highs above 300,000 won.

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. 20251027 Report on Ownership of Specified Securities by Executives and Major Shareholders To: Securities and Futures Commission To: Korea Exchange Date Reporting Obligation Arose: May 28, 2026 Report Preparation Date: June 2, 2026 * The reporter confirms that, as of the report preparation date, the ownership status of specified securities has been accurately prepared in accordance with relevant laws and reporting guidelines, with no false statements or omissions of material matters. Reporter: Choi In-su 1. Information on the Issuing Company Company Name: Samsung Electronics Co., Ltd. Corporate Classification: KOSPI-listed Corporation Company Code: 005930 Total Shares Issued: 6,735,612,586 2. Information on the Reporter Report Type: New Reporter Classification: Individual (Domestic) Name (Korean): Choi In-su Name (Hanja/English): 崔仁壽 (CHOI INSU) Date of Birth: 730227 (Feb 27, 1973) Address: Metapolis-ro, Hwaseong-si, Gyeonggi-do Relationship with Issuer: Executive (Registration Status: Non-registered Executive) Title: Senior Managing Director (Sangmu) Appointment Date: December 6, 2022 Resignation Date: - Major Shareholder: - Business Contact: Affiliated Company: Samsung Electronics Co., Ltd. Department: Finance Team Position: Senior Professional Phone: 031-27****** Contact Name: Kim Eui-yoon Fax: 031-80************* Email: ******.kim@samsung.com 3. Ownership Status of Specified Securities A. Number and Ratio of Specified Securities Owned Previous Report: - / - / - / - / - This Report: June 1, 2026 / 1,178 shares / 0.00% / 1,178 shares / 0.00% Change: +1,178 / 0.00% / +1,178 / 0.00% B. Ownership Breakdown by Type of Specified Securities Common Stock: 1,178 shares Warrants: - Convertible Bonds: - Bonds with Warrants: - Participating Bonds: - Exchangeable Bonds: - Depositary Receipts: - Other: - Total: 1,178 shares (0.00%) Total Shares Issued (J): 6,735,612,586 Non-stock Specified Securities (I): 0 Ownership Ratio of Specified Securities: 0.00% Ownership Ratio of Common Stock: 0.00% C. Detailed Change History | Reason | Trade Date | Type | Before | Change | After | Price (KRW) | | Open-market Buy (+) | Oct 27, 2025 | Common | - | 245 | 245 | 101,116 | | Open-market Buy (+) | Dec 5, 2025 | Common | 245 | 153 | 398 | 107,500 | | Open-market Buy (+) | Dec 29, 2025 | Common | 398 | 50 | 448 | 118,600 | | Open-market Sell (-) | Jan 20, 2026 | Common | 448 | -70 | 378 | 144,600 | | Treasury Stock Bonus (+) | Jan 26, 2026 | Common | 378 | 433 | 811 | 152,100 | | Treasury Stock Bonus (+) | Jan 30, 2026 | Common | 811 | 340 | 1,151 | 160,500 | | Open-market Buy (+) | Feb 12, 2026 | Common | 1,151 | 205 | 1,356 | 178,300 | | Open-market Sell (-) | Mar 4, 2026 | Common | 1,356 | -383 | 973 | 177,800 | | Open-market Buy (+) | Mar 10, 2026 | Common | 973 | 100 | 1,073 | 186,900 | | Open-market Buy (+) | Mar 16, 2026 | Common | 1,073 | 93 | 1,166 | 188,600 | | Open-market Buy (+) | Apr 23, 2026 | Common | 1,166 | 100 | 1,266 | 221,000 | | Open-market Sell (-) | May 15, 2026 | Common | 1,266 | -200 | 1,066 | 264,500 | | Open-market Sell (-) | May 28, 2026 | Common | 1,066 | -293 | 773 | 302,000 | | Open-market Buy (+) | May 28, 2026 | Common | 773 | 350 | 1,123 | 301,000 | | Open-market Buy (+) | May 28, 2026 | Common | 1,123 | 55 | 1,178 | 291,500 | | Total | - | - | - | +1,178 | 1,178 | - | * For transactions on the securities market, the date refers to the contract settlement date. ** For non-stock securities, the price refers to the exercise/conversion/exchange price, or the trading price of shares acquired/disposed through exercise of rights. Amounts in parentheses indicate the trading price of the security itself.