UNITED MICROELECTRONICS CORP

United Microelectronics Corporation (UMC) filed a Form 6-K reporting on the trading and pledging activities of its directors, executive officers, and 10% shareholders for the month of August 2026. The filing includes detailed tables comparing shareholdings as of July 31, 2026, and August 31, 2026, along with any changes that occurred during the month. This report is a standard disclosure requirement for significant shareholders and insiders.

UNITED MICROELECTRONICS CORP reported strong sales growth for July 2026, with net sales increasing by 18.98% year-over-year to NT$23,844,045 thousand. Year-to-date net sales also saw a significant rise of 12.41% to NT$153,614,609 thousand. The company reported no funds lent to other parties and no endorsements or guarantees for the period. Financial derivatives transactions included unwritten-off trading contracts for Forwards totaling NT$903,000 thousand, resulting in a net loss from fair value of NT$(2,525) thousand and a realized loss of NT$(35,898) thousand from written-off trading contracts.

United Microelectronics Corporation (UMC) announced that it has fully received the proceeds from its first domestic unsecured convertible corporate bond issuance. The collecting bank has remitted the total subscription proceeds of NT$12,120,000,000 to the designated depository bank.

United Microelectronics Corporation announced the conversion price and premium rate for its first domestic unsecured convertible corporate bond. The conversion price is set at NT$146.0 per share, with a premium rate of 119.97%. Additionally, its subsidiary, Fortune Venture Capital Corporation, disposed of 870,000 common shares of Centera Photonics Inc. for a total of NT$326,642,500, realizing a gain of NT$248,883,331.

United Microelectronics Corporation announced the designation of Hua Nan Commercial Bank as the collection bank and CTBC Commercial Bank as the dedicated deposit account bank for its 1st and 2nd domestic unsecured convertible corporate bonds. Additionally, the company scheduled its board meeting for July 29, 2026, to approve the Q2 2026 Consolidated Financial Report.

United Microelectronics Corporation (UMC) announced that its subsidiary, Fortune Venture Capital Corporation, disposed of 3,706,000 common shares of Taiwan Semiconductor Co., Ltd. The transaction, which occurred between January 23, 2026, and July 15, 2026, generated a total monetary amount of NTD 302,534,400. UMC's subsidiary realized a gain of NTD 137,617,400 from this divestment, which was conducted for financing operations. Following the disposal, the subsidiary retains 3,035,000 shares, representing a 1.15% stake in Taiwan Semiconductor Co., Ltd.

United Microelectronics Corporation (UMC) reported insider share activities for June 2026, including a significant pledge clearance by a Senior Vice President. Senior VP G C Hung cleared a pledge of 2,000,000 common shares, while VP Jerry CJ Hu sold 10,000 common shares. Additionally, UMC announced it will hold its Q2 2026 Investor Conference on July 29, 2026, to discuss financial and operating results.

UNITED MICROELECTRONICS CORP reported strong sales figures for June 2026, with net sales increasing by 22.85% year-over-year to NT$23,124,962 thousand. Year-to-date net sales also saw a significant rise of 11.28%, reaching NT$129,770,564 thousand. The company also confirmed no funds were lent to other parties and no endorsements or guarantees were provided during the period. Financial derivative transactions primarily involved unwritten-off forward contracts.

United Microelectronics Corporation announced the completion of its 22nd stock buy-back plan. The company repurchased 30,551,000 shares for a total monetary amount of NTD 3,095,665,789, at an average price of NTD 101.33 per share. The actual repurchase period was from May 5, 2026, to May 20, 2026. The company did not complete the full repurchase program, citing market conditions and shareholders' interest.

UNITED MICROELECTRONICS CORP reported strong financial performance for May 2026, with revenue increasing 17.8% year-over-year to NT$22,944 million and net profit attributable to owners surging 203.0% to NT$8,449 million. For Q1 2026, EPS grew 108.1% to NT$1.29. The company also announced an adjustment to its cash dividend to NT$2.60808262 per share, with an ex-dividend date of July 8, 2026, and payment on July 30, 2026. Additionally, UMC disposed of 3,593,875 Novatek Microelectronics Corporation shares for NT$1,724 million, impacting retained earnings by NT$1,351 million.