Stocks › AMKR
AMKOR TECHNOLOGY, INC.
AMKR·Nasdaq·
United States·USD
United States·USD$53.39
-1.24 (-2.27%)
Close · Oct 6, 2026 · Close Prices from Tiingo.com
AMKR
AMKOR TECHNOLOGY, INC. · Nasdaq
Nasdaq 100S&P 500
Filings
Default90D1Y5YALL
AMKRS&P 500 (rebased)
Congress BuyCongress SellInsider BuyInsider SellForm 1448-K ResultsLobbying
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Daily closes, adjusted for splits and dividends · Close Prices from Tiingo.comHover a marker, every one is a filing · move across the line for the crosshair
Congressional Trades
Recent trades of AMKR by members of U.S. Congress · 5 on record · 3 in the last 12 months
| Politician | Stock | Type | Filed | Traded | |
|---|---|---|---|---|---|
 Markwayne MullinSenate · R · OK |
AMKRAMKOR TECHNOLOGY, INC. · Stock |
Purchase $15,001 - $50,000 |
Mar 2, 2026 | Feb 4, 2026 | Filing ↗ |
| Markwayne MullinSenate · R · OK |
AMKRAMKOR TECHNOLOGY, INC. · Stock |
Purchase $15,001 - $50,000 |
Feb 4, 2026 | Jan 5, 2026 | Filing ↗ |
| Markwayne MullinSenate · R · OK |
AMKRAMKOR TECHNOLOGY, INC. · Stock |
Purchase $15,001 - $50,000 |
Feb 4, 2026 | Jan 5, 2026 | Filing ↗ |
 Michael T. McCaulHouse · R · TX |
AMKRAMKOR TECHNOLOGY, INC. · Stock |
Sale $15,001 - $50,000 |
Mar 13, 2014 | Feb 4, 2014 | Filing ↗ |
| Michael T. McCaulHouse · R · TX |
AMKRAMKOR TECHNOLOGY, INC. · Stock |
Sale $15,001 - $50,000 |
Mar 13, 2014 | Feb 4, 2014 | Filing ↗ |
Whale Activity
Position changes in AMKR reported for 2026-09-30 by 1 tracked institutional filer
- Increased0
- New0
- Held0
- Decreased0
- Closed0
- No prior filing1
| Filer | Shares | Value | Change |
|---|---|---|---|
| Silverleafe Capital Partners, LLC | 17.1K | $898K | — |
KeyVex tracks a curated set of large 13F filers plus the largest positions in recent filings, so this is a sample of institutional activity, not the whole market.
Insider Trading
Net shares bought (+) or sold (−) on the open market by AMKR insiders, by quarter · Form 4
Recent Insider Transactions
1,806 transactions on record · newest first
| Insider | Type | Shares | Price | Value | Date | |
|---|---|---|---|---|---|---|
| ALEXANDER DOUGLAS ADirector · Director | Sale | −5,000 | $55.00 | $275K | Oct 2, 2026 | Form 4 ↗ |
| Faust MeganCFO | Sale | −1,000 | $49.05 | $49K | Sep 8, 2026 | Form 4 ↗ |
| ROGERS MARK NEVP & General Counsel | Sale | −5,000 | $59.78 | $299K | Aug 17, 2026 | Form 4 ↗ |
| Faust MeganCFO | Sale | −1,000 | $54.45 | $54K | Aug 11, 2026 | Form 4 ↗ |
| ALEXANDER DOUGLAS ADirector · Director | Sale | −5,000 | $55.81 | $279K | Aug 7, 2026 | Form 4 ↗ |
| Rutten Guillaume Marie JeanDirector · Director | Sale | −25.0K | $54.50 | $1.4M | Aug 6, 2026 | Form 4 ↗ |
| Rutten Guillaume Marie JeanDirector · Director | Sale | −25.0K | $55.35 | $1.4M | Aug 5, 2026 | Form 4 ↗ |
| Engel Kevin K.President and CEO · Director | Sale | −3,221 | $47.00 | $151K | Jul 30, 2026 | Form 4 ↗ |
| ROGERS MARK NEVP & General Counsel | Sale | −5,000 | $65.12 | $326K | Jul 16, 2026 | Form 4 ↗ |
| Faust MeganCFO | Sale | −1,000 | $69.91 | $70K | Jul 14, 2026 | Form 4 ↗ |
| ROGERS MARK NEVP & General Counsel | Sale | −5,000 | $86.21 | $431K | Jun 16, 2026 | Form 4 ↗ |
| ROGERS MARK NEVP & General Counsel | Option exercise | +5,000 | $7.40 | $37K | Jun 16, 2026 | Form 4 ↗ |
| CHURCHILL WINSTON JDirector | Sale | −5,000 | $78.20 | $391K | Jun 12, 2026 | Form 4 ↗ |
| CHURCHILL WINSTON JDirector | Option exercise | +5,000 | $19.39 | $97K | Jun 12, 2026 | Form 4 ↗ |
| KIM SUSAN YDirector · 10% owner | Grant / award | +9,893 | $0.00 | $0 | Jun 12, 2026 | Form 4 ↗ |
| Faust MeganCFO | Sale | −1,000 | $70.30 | $70K | Jun 9, 2026 | Form 4 ↗ |
| Faust MeganCFO | Sale | −1,000 | $64.60 | $65K | May 19, 2026 | Form 4 ↗ |
| ROGERS MARK NEVP & General Counsel | Sale | −5,000 | $71.63 | $358K | May 18, 2026 | Form 4 ↗ |
| ROGERS MARK NEVP & General Counsel | Option exercise | +5,000 | $7.40 | $37K | May 18, 2026 | Form 4 ↗ |
| McCourt MaryFrancesDirector | Option exercise | +9,893 | $0.00 | $0 | May 13, 2026 | Form 4 ↗ |
Fund Holders
Mutual funds and ETFs holding AMKR · SEC Form N-PORT
| Fund | Shares | Value | % of fund | As of |
|---|---|---|---|---|
| VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS | 5.1M | $441.1M | 0.02% | Jun 30, 2026 |
| iShares Core S&P Mid-Cap ETF iShares Trust | 3.9M | $336.5M | 0.27% | Jun 30, 2026 |
| VANGUARD SMALL-CAP INDEX FUND VANGUARD INDEX FUNDS | 3.7M | $318.5M | 0.17% | Jun 30, 2026 |
| VANGUARD SMALL-CAP VALUE INDEX FUND VANGUARD INDEX FUNDS | 2.3M | $201.8M | 0.30% | Jun 30, 2026 |
| VANGUARD INFORMATION TECHNOLOGY INDEX FUND VANGUARD WORLD FUND | 2.1M | $148.2M | 0.09% | May 31, 2026 |
| VANGUARD EXTENDED MARKET INDEX FUND VANGUARD INDEX FUNDS | 1.3M | $112.7M | 0.12% | Jun 30, 2026 |
| First Trust Nasdaq Semiconductor ETF First Trust Exchange-Traded Fund VI | 1.1M | $92.2M | 3.35% | Jun 30, 2026 |
| State Street SPDR S&P MidCap 400SM ETF Trust SPDR S&P MIDCAP 400 ETF TRUST | 877.3K | $75.6M | 0.27% | Jun 30, 2026 |
| U.S. Targeted Value Portfolio DFA INVESTMENT DIMENSIONS GROUP INC | 1.5M | $74.6M | 0.44% | Jul 31, 2026 |
| JPMorgan U.S. Tech Leaders ETF J.P. Morgan Exchange-Traded Fund Trust | 716.1K | $61.7M | 1.33% | Jun 30, 2026 |
Mutual funds and ETFs whose N-PORT filings list AMKR's shares (CUSIP 031652100), each fund at its latest report since Mar 7, 2026, largest positions first. Bonds, options and short positions are left out.
Activist & Passive Stakes
Schedule 13D / 13G beneficial-ownership filings
- Susan Y. Kim, as TrusteeSCHEDULE 13D/A · activist (13D) · 17.4M shares7.0%
May 5, 2026 · ↗ - Susan Y. KimSCHEDULE 13D/A · activist (13D) · 29.5M shares11.9%
May 5, 2026 · ↗ - David D. Kim, as TrusteeSCHEDULE 13D/A · activist (13D) · 2.7M shares1.1%
May 5, 2026 · ↗ - David D. KimSCHEDULE 13D/A · activist (13D) · 3.8M shares1.5%
May 5, 2026 · ↗ - John T. Kim, as TrusteeSCHEDULE 13D/A · activist (13D) · 27.7M shares11.2%
May 5, 2026 · ↗ - 2025 Grantor Retained Annuity Trust No.1 of James J. KimSCHEDULE 13D/A · activist (13D) · 3.2M shares1.3%
May 5, 2026 · ↗ - 2025 Grantor Retained Annuity Trust No. 1 of Agnes C. KimSCHEDULE 13D/A · activist (13D) · 2.5M shares1.0%
May 5, 2026 · ↗ - Susan Y. Kim 2023 Family Distribution TrustSCHEDULE 13D/A · activist (13D) · 725.0K shares0.3%
May 5, 2026 · ↗ - John T. Kim 2024 GRAT #2 dtd. 08/09/2024SCHEDULE 13D/A · activist (13D) · 59.3K shares0.0%
May 5, 2026 · ↗ - John T. Kim 2024 GRAT #1 dtd. 08/09/2024SCHEDULE 13D/A · activist (13D) · 1.2M shares0.5%
May 5, 2026 · ↗
Corporate Lobbying
Estimated quarterly lobbying spending reported under the LDA, filings naming amkor technology as client
- AMKOR TECHNOLOGY, INC.AMKOR TECHNOLOGY, INC. · 2026 Q3 · MAN, SCI, TAR, TAX—
Filing ↗ - AKIN GUMP STRAUSS HAUER & FELDAMKOR TECHNOLOGY, INC. · 2026 Q2 · TRD$90K
Filing ↗ - AKIN GUMP STRAUSS HAUER & FELDAMKOR TECHNOLOGY, INC. · 2026 Q1 · TRD—
Filing ↗ - AKIN GUMP STRAUSS HAUER & FELDAMKOR TECHNOLOGY, INC. · 2026 Q1 · TRD—
Filing ↗
Government Contracts
Federal awards to AMKOR TECHNOLOGY, INC. · USAspending
No federal contract awards found for AMKOR TECHNOLOGY, INC..
U.S. Patents
Recent USPTO applications naming AMKOR TECHNOLOGY, INC.
No USPTO patent applications found for AMKOR TECHNOLOGY, INC..
Annual Financials
From AMKR's 10-K filings · XBRL
No annual XBRL figures on record for AMKR. KeyVex's fundamentals cover about 130 large companies so far.
Stock Splits
Every split and reverse split in the price history
No stock splits in AMKR's price history.
Material Events (8-K)
Corporate events filed with the SEC
- 8-K · Items 2.02, 9.01Results of operationsJul 27, 2026
EDGAR ↗ - 8-K · Items 7.01, 9.01Reg FD disclosureMay 21, 2026
EDGAR ↗ - 8-K · Items 5.07Shareholder voteMay 19, 2026
EDGAR ↗ - 8-K · Items 1.01, 2.03, 3.02, 9.01Material agreement · Direct financial obligation · Unregistered sale of equityMay 5, 2026
EDGAR ↗ - 8-K · Items 8.01, 9.01Other eventsMay 1, 2026
EDGAR ↗
About AMKOR TECHNOLOGY, INC.
From SEC EDGAR company records
Industry (SIC 3674)Semiconductors & Related Devices
SectorTechnology
HeadquartersTEMPE, AZ
IncorporatedDE
SEC CIK0001047127 ↗
Former namesAMKOR TECHNOLOGY INC