UMC files 6-K disclosing RSA-related capital reduction, convertible bond conversion price, and insider share activity
UMC filed a Form 6-K on August 14, 2026 covering three Taiwan Stock Exchange disclosures: (1) the completion of a capital reduction tied to the cancellation of Restricted Stock Awards (RSA), (2) the conversion price and premium rate for the 2nd domestic unsecured convertible corporate bond, and (3) July 2026 insider trading and pledge activity. No earnings or operating guidance is included in this filing.
Key takeaways
Capital reduction completed: Paid-in capital reduced by NT$68,909,710 from NT$125,769,848,700 to NT$125,700,938,990 following the cancellation of 6,890,971 shares (12,546,433,870 to 12,539,542,899 shares) tied to the RSA; book value per share moved from NT$35.38 to NT$35.40.
Convertible bond conversion price set: The 2nd domestic unsecured convertible corporate bond conversion price is NT$130.7 per share, derived from a base price of NT$124.5 and a conversion premium rate of 104.98%; the bond was effective upon FSC filing on July 17, 2026 (Letter No. 11503489291).
Insider share activity: Senior Vice President Chitung Liu's holdings decreased by 1,900,000 shares (from 4,012,917 to 2,112,917) between June 30 and July 31, 2026.
Insider pledge activity: Senior Vice President G C Hung reported a new pledge of 1,200,000 UMC common shares during July 2026.
Prior FY 2026 CAPEX guidance of US$2.0 billion (raised from US$1.5 billion on July 29, 2026) is not reaffirmed, updated, or modified in this 6-K.
Net worth per share figures cited in the capital reduction notice were calculated using the consolidated financial statements for Q2 2026 reviewed by CPAs.
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