UMC Locks in NT$146 Conversion Price for $492M Bond; Venture Arm Books NT$327M on Centera Stake Sale
UMC has more than doubled off its 52-week low of $6.56.
Summary
UMC set the conversion price for its $492 million convertible bond at NT$146, a 20% premium, and its venture capital arm sold a Centera Photonics stake for NT$327 million, realizing a NT$249 million gain.
Key Events · Financing and Capital Events · UMC
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Convertible Bond Conversion Price Set
The conversion price for the NT$15.5 billion (US$492 million) 0% coupon convertible bond was set at NT$146.0 per share, a 19.97% premium to the five-day average closing price of NT$121.7.
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Subsidiary Sells Centera Photonics Stake
Fortune Venture Capital sold 870,000 shares of Centera Photonics for NT$326.6 million (US$10.4 million), realizing a gain of NT$248.9 million (US$7.9 million).
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Bond Pricing Signals Strong Demand
The 20% conversion premium and 0% coupon indicate robust institutional demand for UMC paper, minimizing immediate dilution risk.
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Non-Operating Profit Boost
The Centera disposal gain adds to UMC's already strong Q2 earnings, which saw net income surge nearly fivefold to NT$42.3 billion.
Analysis · UMC · Manufacturing
The conversion price for UMC's previously announced $492 million convertible bond has been finalized at NT$146 per share, representing a 20% premium to the five-day average closing price. This sets the dilution terms for the 0% coupon bond. In a separate move, subsidiary Fortune Venture Capital sold 870,000 shares of Centera Photonics for NT$326.6 million, booking a NT$248.9 million gain. The bond pricing signals strong demand, while the Centera disposal adds non-operating profit.
How filings like this one have moved
In the 30 days to Oct 22, 2026, 29.4% of the 1563 measured filings Wiseek scored 7 moved their stock by 5% or more by the next session's close. The median move was -0.47%. These are measured outcomes after filings of this importance, not a forecast for this one.
Measured one observation per ticker per day, after exclusions. Current figures: Filing Impact Tracker · open dataset
At the time of this filing, UMC was trading at $17.18 on NYSE in the Manufacturing sector, with a market capitalization of approximately $39.8B. The 52-week trading range was $6.56 to $28.96. This filing was assessed with positive market sentiment and an importance score of 7 out of 10.