Insider trade

CEO sold ~$448K of AMKR shares in the open market

Traded Dec 15, 2025 · Filed Dec 17, 2025

Why it stands out

The boss of Amkor Technology sold $448K of Amkor Technology shares. It was planned long ago, so it says very little.

Written from the filing's own figures. OQRO describes what was reported and never tells you what to buy or sell

View the official recordSEC Form 4 — Statement of Changes in Beneficial Ownership

All the details

CEO$100K–$500KPre-arranged plan referenced

Classification

open market sale

Code S — open-market or private sale

Absolute commitment

~$448,000

Shares × reported transaction price

Timing vs results

49 days after results of Oct 27, 2025, 56 days before results of Feb 9, 2026

Results dates are the company's own 8-K (Item 2.02). Many companies only let insiders trade in a window after results

Planned / mechanical clue

Footnote references a pre-arranged trading plan (Rule 10b5-1)

Only flagged when a footnote says so; never inferred

After	Stock	S&P 500	Difference
7 days	+3.3%	+2.0%	+1.2%
30 days	+24.8%	+0.2%	+24.6%
90 days	+19.3%	−2.2%	+21.5%
180 days	+120.2%	+10.9%	+109.3%

Past results only. Not a forecast.

The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 06, 2025.
The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $44.37 to $45.18. The Reporting Person hereby undertakes to provide, upon request, to the staff of the Securities and Exchange Commission, Amkor Technology, Inc. (the "Issuer"), or any security holder of the Issuer, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (2) to this Form 4.