Transaction · 0001628280-26-065246

ALEXANDER DOUGLAS A

ALEXANDER DOUGLAS A, DIR, reported an open-market or private sale at AMKOR TECHNOLOGY, INC. involving 5000.000000 shares for an estimated $275000.00. Reported holdings after the transaction were 29109.000000 shares. The stored filing text includes a detected 10b5-1 reference.

Open-market sellSEC transaction code SDIR
AMKRAMKOR TECHNOLOGY, INC.
Filing timeOct 06
Trade dateOct 02, 2026
Filing · SECView on SEC
InsiderProfile
% of reported position traded14.66%Shares sold ÷ (holdings after + shares sold). Estimated position before: 34,109 shares.

Row-level estimate for this security and ownership context, not the insider’s complete portfolio. Joint ownership, other transactions in the filing, amendments and footnotes can affect interpretation.

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
$53.39
Pre-filing
1mo ago -11.7%1w ago +0.4%1d ago -0.9%
Returns since
7d30d90d180d1y

AMKR price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
AMKR since 2026-10-06Filed yesterday · 1 day of post-filing data
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Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
Sell
Code S
Identifier
0001628280-26-065246
Common Stock
Transaction date
Oct 02, 2026
Filed Oct 06, 2026, 08:35 PM · 4d delay
Shares
5.00k sh
$55.00 per share
Estimated value
-$275k
Computed from shares × price
Holdings after
29.1k sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Direct Ownership 10b5-1 Detected
-4score
Filing-only score

-4

Compact filing score computed from stored Form 4 facts. Version v1.

Neutral filing signal

This filing is broadly neutral on the filing-only scale. The Form 4 facts do not strongly tilt positive or negative.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

No officer title

Officer NoDirector Yes10% NoOther No
Footnotes & amended
  1. F1

    The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 8, 2026.

  2. F2

    This stock option to acquire 20,000 shares of the Issuer's Common Stock was granted on May 1, 2018, vested in full on May 1, 2019.

Original filing · 0001628280-26-065246
Related transactions

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Same reporting owner
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AMKR