Amkor Technology, Inc. (AMKR) Insider Trading

Over the last 3 months, AMKR insiders made 0 open-market buys and 8 sales, a net sale of -$7.7M (SEC Form 4). Over the last 6 months, 346 institutions increased and 301 reduced their position (13F).

Insider Activity

Sentiment
0/100
Buys (3m)
0
Sells (3m)
8
Net (3m)
-$7.7M
Insider trades by month Buys Sells
Nov
Dec
Jan
Feb
Apr
May
Context3-month price +65.7%Institutions accumulating (13F)
DateInsiderTypeSharesPrice
May 20, 2026Faust Meganofficer: CFOSell1,000$64.60
May 20, 2026ROGERS MARK Nofficer: EVP & General CounselSell5,000$71.63
May 20, 2026ROGERS MARK Nofficer: EVP & General CounselOption5,000$7.40
May 15, 2026McCourt MaryFrancesdirectorGrant2,613
May 15, 2026Rutten Guillaume Marie JeandirectorOption482
May 15, 2026Tily Gil C.directorGrant2,613
May 15, 2026Morse Robert RandolphdirectorGrant2,613
May 15, 2026Liao Daniel JLdirectorGrant2,613
May 15, 2026Carolin Roger AnthonydirectorGrant2,613
May 15, 2026WATSON DAVID NdirectorGrant2,613
May 15, 2026KIM SUSAN Ydirector, 10 percent owner, other: Member of 10% owner group (6)Grant2,613
May 15, 2026CHURCHILL WINSTON JdirectorOption9,893
May 15, 2026Tily Gil C.directorOption9,893
May 15, 2026WATSON DAVID NdirectorOption9,893
May 15, 2026WATSON DAVID NdirectorOption9,893
May 15, 2026ALEXANDER DOUGLAS AdirectorGrant2,613
May 15, 2026Tily Gil C.directorOption9,893
May 15, 2026McCourt MaryFrancesdirectorOption9,893
May 15, 2026Rutten Guillaume Marie JeandirectorGrant2,613
May 15, 2026McCourt MaryFrancesdirectorOption9,893
May 15, 2026KIM SUSAN Ydirector, 10 percent owner, other: Member of 10% owner group (6)Option9,893
May 15, 2026CHURCHILL WINSTON JdirectorGrant2,613
May 15, 2026CHURCHILL WINSTON JdirectorOption9,893
May 13, 2026Tily Gil C.directorSell15,000$77.30
May 12, 2026Rutten Guillaume Marie JeandirectorSell50,000$74.28
May 7, 2026ALEXANDER DOUGLAS AdirectorOption4,657$9.45
May 7, 2026CHURCHILL WINSTON JdirectorSell7,000$76.45
May 7, 2026Carolin Roger AnthonydirectorSell20,000$76.24
May 7, 2026ALEXANDER DOUGLAS AdirectorSell343$76.58
May 7, 2026ALEXANDER DOUGLAS AdirectorOption343$8.51

Source: AMKR SEC Form 4 filings, latest May 20, 2026. For informational purposes only — not investment advice.

Institutional activity (13F)

How institutions changed their AMKR positions over the last 6 months (SEC Form 13F).

Increased
346
New positions
237
Reduced
301
Sold out
102
Largest moves
InstitutionActionSharesFiled
VANGUARD GROUP INCReduced15.7MJan 29, 2026
BLACKROCK, INC.Increased13.0MMay 13, 2026
BLACKROCK, INC.Reduced12.9MFeb 12, 2026
DIMENSIONAL FUND ADVISORS LPReduced12.8MFeb 12, 2026
DIMENSIONAL FUND ADVISORS LPReduced11.0MMay 7, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCNew Position9.1MMay 8, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position5.4MMay 15, 2026
JPMORGAN CHASE & COIncreased5.4MMay 13, 2026
EARNEST PARTNERS LLCReduced3.8MFeb 12, 2026
STATE STREET CORPIncreased3.6MMay 15, 2026
AMERICAN CENTURY COMPANIES INCReduced3.6MFeb 13, 2026
STATE STREET CORPIncreased3.5MFeb 13, 2026
EARNEST PARTNERS LLCReduced3.4MMay 15, 2026
AQR CAPITAL MANAGEMENT LLCReduced3.3MFeb 17, 2026
AQR CAPITAL MANAGEMENT LLCReduced3.2MMay 15, 2026

Source: SEC Form 13F filings. For informational purposes only — not investment advice.