Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

MAGNACHIP SEMICONDUCTOR Corp

MX · NYSE · CIK 0001325702 · Technology · Semiconductors

INSIDER SIGNAL

49.4 / 100

1 buyers · 3 purchase transaction lines · $318.6K gross purchase

WHY THIS SIGNAL?

Buyer breadthLow
Purchase sizeModerate
RoleModerate
RecencyModerate
ConvictionStrong
Score anatomy

Each bar shows the contribution to the current score; the weights and formula stay unchanged.

Cluster+7.0 / 35
Purchase size+12.8 / 25
Role+13.0 / 20
Recency+6.7 / 10
Conviction+10.0 / 10

What is holding the score back?

  • ⚠ Cluster breadth is moderate · 1 insider(s), not 4+
  • ⚠ Role scores low · most senior buyer: Chief Executive Officer (CEO, chair and 10% owners score lowest)

Purchase-size comments are relative to the model scale. Average daily volume is a separate market-context diagnostic.

US-v1.2 ranks qualifying equity purchases under the current 180-day rules. The score is a research priority, not a return forecast or probability. Backtests have not shown that a higher US score is followed by better returns.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
LEE CHAEChief Executive Officer
○●●
MARTINO CAMILLODirector
○○
Park ShinyoungChief Financial Officer
○
Lee SeunghoonChief of Manufacturing
○
Chung Kyo-Hwa LizDirector
○
NATHAN GILBERT EDirector
○
● Purchase▼ Sale○ Other

Showing the six most active owners; 1 additional owner(s) remain in Form 4 evidence.

Purchase breadth & concentration

QUALIFYING BUYERS1
PURCHASE CONCENTRATION100%Largest buyer: LEE CHAE · $318.6K
CLUSTER BUYING · 15D1 insiderPeak activity: 2026-09-23–2026-09-24

Roles in the peak window: Chief Executive Officer. Concentration uses priced qualifying P lines only and does not change the saved score.

SIGNAL HISTORY

49.4 / 100

Latest recorded score

↓ -0.3 ptsversus the previous recorded snapshot
  1. 50.2
  2. 50.0
  3. 49.9
  4. 49.7
  5. 49.4

Only scores saved when a full US scoring run completed are shown; gaps are not reconstructed.

Recent Form 4 activity

6Purchases
0Sales
21Other Form 4 lines
18SEC filings · 365 days
BUYING3 qualifying P line(s) · 180 days
SELLING0 sale line(s) · context only
OTHER8 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context provides additional background on recent price performance and risk. It does not affect the Insider Signal.

Price performance

1M
+5.1%
3M
-18.1%
6M
+4.3%
12M
-1.0%

Volatility & liquidity

Volatility
80.3%
Beta
—
Avg daily value
USD 3.2M

Valuation

Market cap
—
P/E
—

Fundamentals

Profit margin
-16.6%
ROE
-12.0%
Industry
Semiconductors

Market data

Price data up to: 2026-10-11 · Price source: OpenBB/yfinance; volume from price cache (yfinance) · From SEC filings: Profit margin, ROE · Fiscal year ended: 2025-12-31 · Status: PASS

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
1,672,866
Previous report
1,212,466
Avg daily volume
2,546,721
Days to cover
≤ 1.0

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-24LEE CHAEPurchase (P)Common Stock20,000USD 3.22USD 64,400SEC filing ↗
2026-09-23LEE CHAEPurchase (P)Common Stock80,000USD 3.18USD 254,200SEC filing ↗
2026-03-16NATHAN GILBERT EPurchase (P)Common Stock21,994USD 2.87USD 63,123SEC filing ↗
2026-03-13NATHAN GILBERT EPurchase (P)Common Stock13,006USD 2.79USD 36,287SEC filing ↗
2026-03-12NATHAN GILBERT EPurchase (P)Common Stock25,000USD 2.75USD 68,750SEC filing ↗
2025-08-25Park Shin YoungPurchase (P)Common Stock10,000USD 2.87USD 28,700SEC filing ↗
2025-08-22MARTINO CAMILLOPurchase (P)Common Stock30,000USD 2.84USD 85,200SEC filing ↗
2025-03-14Lee IlbokPurchase (P)Common Stock20,000USD 3.86USD 77,200SEC filing ↗
2025-03-13NATHAN GILBERT EPurchase (P)Common Stock20,000USD 3.68USD 73,600SEC filing ↗
2025-03-13MARTINO CAMILLOPurchase (P)Common Stock20,000USD 3.66USD 73,200SEC filing ↗
2024-03-12Park Shin YoungPurchase (P)Common Stock9,000USD 5.56USD 50,040SEC filing ↗
2024-03-12Kim Theodore SPurchase (P)Common Stock2,000USD 5.55USD 11,100SEC filing ↗
2024-03-11Kim Theodore SPurchase (P)Common Stock5,000USD 5.60USD 28,000SEC filing ↗
2024-03-08Kim Young-JoonPurchase (P)Common Stock17,826USD 5.61USD 100,004SEC filing ↗
2023-12-08NATHAN GILBERT EPurchase (P)Common Stock10,000USD 6.80USD 68,000SEC filing ↗

Form 4 evidence

27 transaction lines in the latest 365-day window; 271 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-24LEE CHAEPurchase (P)Common Stock20,000USD 3.22USD 64,400SEC filing ↗
2026-09-23LEE CHAEPurchase (P)Common Stock80,000USD 3.18USD 254,200SEC filing ↗
2026-08-15MARTINO CAMILLOAward / grant (A)Common Stock6,764USD 0.00USD 0SEC filing ↗
Show recent Form 4 evidence (21 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-24LEE CHAEPurchase (P)Common Stock20,000USD 3.22USD 64,400SEC filing ↗
2026-09-23LEE CHAEPurchase (P)Common Stock80,000USD 3.18USD 254,200SEC filing ↗
2026-08-15MARTINO CAMILLOAward / grant (A)Common Stock6,764USD 0.00USD 0SEC filing ↗
2026-08-01NATHAN GILBERT EAward / grant (A)Common Stock51,191USD 0.00USD 0SEC filing ↗
2026-08-01MARTINO CAMILLOAward / grant (A)Common Stock39,286USD 0.00USD 0SEC filing ↗
2026-08-01Chung Kyo-Hwa LizAward / grant (A)Common Stock48,810USD 0.00USD 0SEC filing ↗
2026-08-01Amoruso CristianoAward / grant (A)Common Stock46,429USD 0.00USD 0SEC filing ↗
2026-07-01LEE CHAEAward / grant (A)Common Stock288,750USD 0.00USD 0SEC filing ↗
2026-06-01Park ShinyoungAward / grant (A)Common Stock112,500USD 0.00USD 0SEC filing ↗
2026-06-01Lee SeunghoonAward / grant (A)Common Stock30,000USD 0.00USD 0SEC filing ↗
2026-03-16NATHAN GILBERT EPurchase (P)Common Stock21,994USD 2.87USD 63,123SEC filing ↗
2026-03-13NATHAN GILBERT EPurchase (P)Common Stock13,006USD 2.79USD 36,287SEC filing ↗
2026-03-12NATHAN GILBERT EPurchase (P)Common Stock25,000USD 2.75USD 68,750SEC filing ↗
2026-02-15NATHAN GILBERT EAward / grant (A)Common Stock1,478USD 0.00USD 0SEC filing ↗
2026-02-15Chung Kyo-Hwa LizAward / grant (A)Common Stock2,946USD 0.00USD 0SEC filing ↗
2026-02-15Amoruso CristianoAward / grant (A)Common Stock28,628USD 0.00USD 0SEC filing ↗
2025-12-31Park Shin YoungTax withholding (F)Common Stock36,332USD 2.55USD 92,647SEC filing ↗
2025-12-31Lee SeunghoonTax withholding (F)Common Stock15,752USD 2.55USD 40,168SEC filing ↗
2025-12-31Lee SeunghoonAward / grant (A)Common Stock7,000USD 2.55USD 17,850SEC filing ↗
2025-11-15NATHAN GILBERT EAward / grant (A)Common Stock6,320USD 0.00USD 0SEC filing ↗
2025-11-15Chung Kyo-Hwa LizAward / grant (A)Common Stock3,160USD 0.00USD 0SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerMX
CIK0001325702
SectorTechnology
IndustrySemiconductors Yahoo Finance
SEC SIC3674 Semiconductors & Related Devices
ExchangeNYSE

Data coverage

Local Form 4 history271 transaction lines from 2020-01-14 to 2026-09-24
24 P purchase lines · 42 S sale lines · 205 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.