No actionable information, this is a routine monthly compliance filing with zero insider activity. Monitor next month's filing for any changes in insider positions.
Price Chart
Executive Summary
UMC filed a routine Form 6-K on September 29, 2026, reporting insider trading and share pledge activity for August 2026. The exhibit shows no changes in shareholdings or pledges by directors, executive officers, or 10% shareholders during the month, all fields are marked with dashes. This is a purely administrative filing with no material financial or operational information.
Key Facts
- Filing reports insider trading and share pledges for August 2026
- No changes in shareholdings or pledges by insiders during the month
- All data fields in the exhibit are marked with dashes (no activity)
- Signed by CFO Chitung Liu on September 29, 2026
Financial Impact
No financial impact, no trading or pledge activity reported
Investment Themes
Documents Analyzed
This report is based on 5 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| 6-K Filing (Primary) | 0001193125-26-405903 |
| Document: umc-ex99_1.htm | 0001193125-26-405903 |
| Document: 0001193125-26-405903-index-headers.html | 0001193125-26-405903 |
| Document: 0001193125-26-405903-index.html | 0001193125-26-405903 |
| Document: 0001193125-26-405903.txt | 0001193125-26-405903 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 28, 2026 today | 6-K | $19.28 | awaiting T+5 | awaiting T+5 | $18.74 (−2.83%) |
Oct 28, 2026 today | 6-K | $19.20 | awaiting T+5 | awaiting T+5 | $18.74 (−2.42%) |
Oct 23, 2026 5d ago | 6-K | $18.89 | awaiting T+5 | awaiting T+5 | $18.74 (−0.82%) |
Oct 13, 2026 15d ago | 6-K | $22.39 $19.67 | ▼ −12.15% | ▼ −11.00% | $18.74 (−16.32%) |
Oct 7, 2026 21d ago | Court Ruling | $22.82 $20.92 | ▼ −8.33% | ▼ −8.05% | $18.74 (−17.90%) |
Oct 6, 2026 22d ago | 6-K | $23.19 $22.39 | ▼ −3.45% | ▼ −3.31% | $18.74 (−19.21%) |
Oct 5, 2026 23d ago | 6-K | $23.92 $22.55 | ▲ +5.73% | ▲ +6.15% | $18.74 (+21.68%) |
Sep 29, 2026 29d ago | 6-K | $24.72 $23.19 | ▼ −6.19% | ▼ −8.14% | $18.74 (−24.21%) |
Sep 22, 2026 5w ago | Insider Cluster | $25.77 $24.72 | ▲ +4.07% | ▲ +2.89% | $18.74 (+27.30%) |
Sep 4, 2026 7w ago | 6-K | $20.77 $21.90 | ▲ +5.44% | ▲ +6.65% | $18.74 (−9.80%) |
US Market Status
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