LIN JEN-TSUNG
Vice President
SaleAlert
- Shares
- 10,000
- Price
- $163.00
- Value
- $1,630,000
SEC EDGAR · Forms 3/4/5Updated through Oct 30, 2026•35 filings
UMC
UNITED MICROELECTRONICS CORP
Net sales of $230.4M over the last 3 months
2 sellers account for the net balance. There is no cluster of three distinct buyers within 30 days. We found no CEO/CFO purchases over 12 months.
How to read this signal
Only open-market P purchases and S sales count toward the signal. Vesting, options, taxes and gifts remain in the source data but do not trigger alerts. Rule 10b5-1 trades are shown as informational.
3-month balance
−$230,429,600
0 buyers · 2 sellers
12-month purchases
$0.00
0 distinct insiders
12-month sales
$526,433,600
3 distinct insiders
Highlighted alerts
5
0 Rule 10b5-1 trades treated as informational
Buying cluster · 30 days
Fewer than three distinct buyers
CEO/CFO purchases · 12 months
No executive purchases found
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Form 4 raw → Raspberry
The value is in what we do not call a signal.
The SEC XML stores every transaction. Raspberry keeps that evidence, reads the footnotes and separates voluntary open-market activity from vesting, option exercises, gifts, tax withholding, stock purchase and dividend reinvestment plans and pre-programmed 10b5-1 trades.
7
Raw transactions
Everything returned by the filing
5
Voluntary view
P/S trades after deterministic checks
0
Administrative noise
Stored, never alerted
0
10b5-1
Shown as informational
SEC ownership XML facts
- Code
- S
- Shares
- 10,000
- Price
- $163.00
- Footnotes
- 2
New Taiwan Dollars Includes 667,080 shares of Restricted Stock Award (RSA) and a specified number of shares subject to the RSA will vest annually on December 5 from 2026 to 2029.
Raspberry interpretation
Eligible voluntary-market alert
Reason: voluntary_market_trade.
Recent transactions
Voluntary purchases and sales; administrative noise stays hidden.
Liu Chitung
CFO & SVP
SaleAlert
- Shares
- 400,000
- Price
- $145.00
- Value
- $58,000,000
Liu Chitung
CFO & SVP
SaleAlert
- Shares
- 1,200,000
- Price
- $142.33
- Value
- $170,799,600
Liu Chitung
CFO & SVP
SaleAlert
- Shares
- 1,900,000
- Price
- $154.89
- Value
- $294,291,000
HU CHE-JEN
Vice President
SaleAlert
- Shares
- 10,000
- Price
- $171.30
- Value
- $1,713,000
| Date | Insider | Transaction | Shares | Price | Value | Reading |
|---|---|---|---|---|---|---|
| Sep 22, 2026 | LIN JEN-TSUNG Vice President | Sale | 10,000 | $163.00 | $1,630,000 | |
| Sep 17, 2026 | Liu Chitung CFO & SVP | Sale | 400,000 | $145.00 | $58,000,000 | |
| Sep 16, 2026 | Liu Chitung CFO & SVP | Sale | 1,200,000 | $142.33 | $170,799,600 | |
| Jul 13, 2026 | Liu Chitung CFO & SVP | Sale | 1,900,000 | $154.89 | $294,291,000 | |
| Jun 30, 2026 | HU CHE-JEN Vice President | Sale | 10,000 | $171.30 | $1,713,000 |
“Alert” means a voluntary, unscheduled transaction according to the filing; it is not an investment recommendation. Official source: SEC EDGAR.