UMC UNITED MICROELECTRONICS CORP
Price Chart
Executive Summary
UMC's board approved the issuance of two zero-coupon unsecured convertible bonds totaling up to NT$16 billion (~$493M USD) to fund machinery and equipment purchases. The 1st bond (up to NT$12B) will be issued at no less than 101% of par via book building, and the 2nd bond (up to NT$4B) via competitive auction at no less than 100% of par; both have a five-year term and 0% coupon. This is a capital raise for capacity expansion, with conversion terms and pricing yet to be finalized pending regulatory approval.
Actionable Insight
The convertible bond issuance is a moderate positive for funding capex without immediate cash interest cost, but the eventual conversion will dilute common equity. Monitor the conversion price announcement — a low conversion price would signal higher dilution risk. The 0% coupon and premium issue price suggest strong demand, but the lack of finalized terms keeps the near-term impact neutral.
Key Facts
- Board approved 1st Unsecured Convertible Bond: up to NT$12 billion par value, 0% coupon, 5-year term, issued at ≥101% of par via book building.
- Board approved 2nd Unsecured Convertible Bond: up to NT$4 billion par value, 0% coupon, 5-year term, issued at ≥100% of par via competitive auction.
- Proceeds from both bonds will be used to purchase machinery and equipment.
- Conversion price, issue date, and other terms are TBD and subject to regulatory approval; Chairman authorized to finalize details.
- No physical certificates; bonds will be book-entry and listed on the Taipei Exchange (TPEx) for OTC trading.
- Filing is a 6-K (foreign issuer report) dated June 3, 2026, signed by CFO Chitung Liu.
Financial Impact
Up to NT$16 billion (~$493M USD at ~32.4 TWD/USD) in new zero-coupon convertible debt; potential dilution from conversion is not yet quantifiable as conversion price is TBD.
Risk Factors
- Dilution risk from conversion of up to NT$16B in bonds; magnitude depends on conversion price, which is TBD.
- Execution risk: regulatory approval and market conditions could delay or alter terms.
- Capex deployment may not yield expected returns if semiconductor demand softens.
- Cross-filing context: the 20-F annual report (filed 34 days ago) provides baseline financials but no new operational data to assess current performance.
Market Snapshot
Documents Analyzed
This report is based on 5 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| 6-K Filing (Primary) | 0001193125-26-254481 |
| Document: 6k_on_06032026.htm | 0001193125-26-254481 |
| Document: 0001193125-26-254481-index-headers.html | 0001193125-26-254481 |
| Document: 0001193125-26-254481-index.html | 0001193125-26-254481 |
| Document: 0001193125-26-254481.txt | 0001193125-26-254481 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
|
Jun 5, 2026
7d ago
|
6-K
| $20.74 awaiting T+1 | awaiting T+1 | — | $21.63 (+4.29%) |
|
Jun 3, 2026
9d ago
|
6-K
| $21.42 $20.79 | ▼ −2.94% | ▼ −3.34% | $21.63 (+0.98%) |
|
May 27, 2026
16d ago
|
6-K
| $22.22 $22.68 | ▲ +2.07% | ▲ +1.52% | $21.63 (−2.66%) |
|
May 15, 2026
28d ago
|
6-K
| $17.20 $17.12 | ▼ −0.47% | ▼ −0.40% | $21.63 (+25.76%) |
|
May 13, 2026
4w ago
|
6-K
| $15.92 $17.13 | ▲ +7.60% | ▲ +6.82% | $21.63 (+35.87%) |
|
May 12, 2026
4w ago
|
6-K
| $16.06 $15.92 | ▼ −0.87% | ▼ −1.45% | $21.63 (+34.68%) |
|
May 8, 2026
5w ago
|
6-K
| $15.42 $15.59 | ▲ +1.10% | ▲ +0.87% | $21.63 (+40.27%) |
|
May 7, 2026
5w ago
|
6-K
| $15.16 $15.42 | ▲ +1.72% | ▲ +0.89% | $21.63 (+42.68%) |
|
Apr 21, 2026
7w ago
|
6-K
| $12.33 $12.71 | ▲ +3.08% | ▲ +2.06% | $21.63 (+75.43%) |
|
Apr 15, 2026
8w ago
|
6-K
| $9.95 $10.62 | ▲ +6.73% | ▲ +6.48% | $21.63 (+117.39%) |
US Market Status
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