AMKOR TECHNOLOGY (AMKR) stock: insider trades, news & valuation
Heavy selling
Close · Oct 9, 2026
$49.12
-3.7% on the day
+61.5% over 12 months
52-week range $28.06 – $93.38
Share price and insider trades
AMKR closeInsider buyInsider sale
Bought, 12 months$0
Sold, 12 months$992M
Insiders buying0
Insiders selling12
AMKOR TECHNOLOGY insider trading at a glance (Oct 9, 2026): in the past 12 months, 0 insiders bought $0 and 12 sold $992M of AMKR stock on the open market.
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AMKR insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | $275K | 1 |
| Q3 2026 | — | 0 | $4.0M | 9 |
| Q2 2026 | — | 0 | $8.9M | 12 |
| Q1 2026 | — | 0 | $974M | 11 |
| Q4 2025 | — | 0 | $5.1M | 9 |
Valuation, profit and volume
P/E (trailing)n/aSector median —
Market value—
Profit margin—Revenue growth —
Volume vs. 50-day0.7×Last 5 sessions
Insiders' paper profit—On all tracked purchases —
Summary
Over the past 12 months, 0 AMKOR TECHNOLOGY, INC. insiders reported open-market purchases totaling $0, while 12 insiders reported sales totaling $992M. 22 of 42 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.
AMKR earnings: how the stock reacted
Each quarterly results release (SEC 8-K Item 2.02), the trend before it, insider trades in the 30 days before, and the 2-day market reaction. “E” marks releases on the chart above.
| Release | 15 days before | Insiders, 30 days before | Reaction (2 days) | Next 30 days |
|---|---|---|---|---|
| Jul 27, 2026 | -10.0% | Sold $396K | -29.7%S&P +0.3% | +13.2% |
| Apr 27, 2026 | +41.6% | Sold $297K | -8.6%S&P -0.3% | -1.1% |
| Feb 9, 2026 | -5.9% | Sold $778K | +8.3%S&P +0.2% | -22.7% |
| Oct 27, 2025 | +7.0% | Sold $307K | -1.9%S&P +1.4% | +8.6% |
| Jul 28, 2025 | -3.3% | None | +18.5%S&P -0.3% | -1.7% |
| Apr 28, 2025 | +9.8% | None | -3.0%S&P +0.7% | +10.0% |
| Feb 10, 2025 | -6.1% | None | -11.2%S&P +0.8% | -11.7% |
| Oct 28, 2024 | -1.1% | None | -6.4%S&P +0.5% | -7.0% |
Most companies bar insiders from trading in the weeks before results, so pre-earnings purchases are rare and often made by directors or under pre-set plans. Past reactions don't predict future ones.
Members of Congress who traded AMKR
From STOCK Act disclosures. Reported up to 45 days after the trade, in dollar ranges.
| Member | Trade | Traded | Reported | Since trade |
|---|---|---|---|---|
| Markwayne MullinSenate | Bought $15,001 - $50,000 | Feb 4, 2026 | Mar 2, 2026 | +12.5% |
| Markwayne MullinSenate | Bought $15,001 - $50,000 | Jan 5, 2026 | Feb 4, 2026 | +2.6% |
| Markwayne MullinSenate | Bought $15,001 - $50,000 | Jan 5, 2026 | Feb 4, 2026 | +2.6% |
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Oct 6SEC | Douglas A AlexanderDirector | Sell Plan | 5,00029,109 held (−15%) | $55.00 | $275K | -10.7% | — |
| Sep 10SEC | Megan FaustCFO | Sell Plan | 1,000134,105 held (−1%) | $49.05 | $49K | +0.1% | — |
| Aug 19SEC | Mark N RogersGeneral Counsel | Sell Plan | 5,00038,904 held (−11%) | $59.78 | $299K | -17.8% | — |
| Aug 13SEC | Megan FaustCFO | Sell Plan | 1,000135,105 held (−1%) | $54.45 | $54K | -9.8% | — |
| Aug 11SEC | Douglas A AlexanderDirector | Sell Plan | 5,00029,109 held (−15%) | $55.81 | $279K | -12.0% | — |
| Aug 7SEC | Guillaume Marie Jean RuttenDirector | Sell | 25,000486,732 held (−5%) | $55.35 | $1.4M | -11.3% | — |
| Aug 7SEC | Guillaume Marie Jean RuttenDirector | Sell | 25,000461,732 held (−5%) | $54.50 | $1.4M | -9.9% | — |
| Jul 31SEC | Kevin K. EngelCEO, President | Sell | 3,2219,666 held (−25%) | $47.00 | $151K | +4.5% | — |
| Jul 20SEC | Mark N RogersGeneral Counsel | Sell Plan | 5,00038,904 held (−11%) | $65.12 | $326K | -24.6% | — |
| Jul 16SEC | Megan FaustCFO | Sell Plan | 1,000136,105 held (−1%) | $69.91 | $70K | -29.7% | — |
| Jun 18SEC | Mark N RogersGeneral Counsel | Sell Plan | 5,00038,904 held (−11%) | $86.21 | $431K | -43.0% | — |
| Jun 16SEC | Winston J ChurchillDirector | Sell | 5,00028,781 held (−15%) | $78.20 | $391K | -37.2% | — |
| Jun 11SEC | Megan FaustCFO | Sell Plan | 1,000132,138 held (−1%) | $70.30 | $70K | -30.1% | — |
| May 20SEC | Mark N RogersGeneral Counsel | Sell Plan | 5,00038,904 held (−11%) | $71.63 | $358K | -31.4% | — |
| May 20SEC | Megan FaustCFO | Sell Plan | 1,000133,138 held (−1%) | $64.60 | $65K | -24.0% | — |
| May 13SEC | Gil C. TilyDirector | Sell | 15,000108,806 held (−12%) | $77.30 | $1.2M | -36.5% | — |
| May 12SEC | Guillaume Marie Jean RuttenDirector | Sell | 50,000502,558 held (−9%) | $74.28 | $3.7M | -33.9% | — |
| May 7SEC | Roger Anthony CarolinDirector | Sell | 20,00094,409 held (−17%) | $76.24 | $1.5M | -35.6% | — |
| May 7SEC | Winston J ChurchillDirector | Sell | 7,00018,888 held (−27%) | $76.45 | $535K | -35.7% | — |
| May 7SEC | Douglas A AlexanderDirector | Sell | 4,65729,109 held (−14%) | $76.58 | $357K | -35.9% | — |
| May 7SEC | Douglas A AlexanderDirector | Sell | 34329,109 held (−1%) | $76.58 | $26K | -35.9% | — |
| Apr 20SEC | Mark N RogersGeneral Counsel | Sell Plan | 5,00038,904 held (−11%) | $59.43 | $297K | -17.3% | — |
| Mar 18SEC | Mark N RogersGeneral Counsel | Sell Plan | 5,00038,904 held (−11%) | $44.54 | $223K | +10.3% | — |
| Feb 26SEC | Guillaume Marie Jean RuttenDirector | Sell | 20,000543,866 held (−4%) | $48.80 | $976K | +0.7% | — |
| Feb 26SEC | Farshad HaghighiPresident | Sell | 15,6248,354 held (−65%) | $50.50 | $789K | -2.7% | — |
| Feb 26SEC | Kevin K. EngelCEO, President | Sell | 12,5002,953 held (−81%) | $48.75 | $609K | +0.8% | — |
| Feb 18SEC | Guillaume Marie Jean RuttenDirector | Sell Plan | 10,000339,311 held (−3%) | $45.89 | $459K | +7.0% | — |
| Feb 18SEC | Kevin K. EngelCEO, President | Sell | 5,316786 held (−87%) | $46.03 | $245K | +6.7% | — |
| Feb 18SEC | Mark N RogersGeneral Counsel | Sell Plan | 5,00024,922 held (−17%) | $46.92 | $235K | +4.7% | — |
| Feb 17SEC | John T KimMember Of 10% Owner Group (6) | Sell | 10,000,00029,594,980 held (−25%) | $48.49 | $485M | +1.3% | — |
| Feb 17SEC | 915 Investments, LpMember Of 10% Owner Group (2) | Sell | 10,000,00029,594,980 held (−25%) | $48.49 | $485M | +1.3% | — |
| Jan 20SEC | Guillaume Marie Jean RuttenDirector | Sell Plan | 10,000335,391 held (−3%) | $53.14 | $531K | -7.6% | — |
| Jan 20SEC | Mark N RogersGeneral Counsel | Sell Plan | 5,00023,862 held (−17%) | $49.28 | $246K | -0.3% | — |
| Dec 17SEC | Mark N RogersGeneral Counsel | Sell Plan | 20,00023,862 held (−46%) | $42.95 | $859K | +14.4% | — |
| Dec 17SEC | Guillaume Marie Jean RuttenCEO, President | Sell Plan | 10,000336,699 held (−3%) | $44.80 | $448K | +9.6% | — |
| Dec 17SEC | Winston J ChurchillDirector | Sell | 5,00025,888 held (−16%) | $44.29 | $221K | +10.9% | — |
| Dec 16SEC | Gil C. TilyDirector | Sell | 20,000123,806 held (−14%) | $46.44 | $929K | +5.8% | — |
| Dec 16SEC | Maryfrances MccourtDirector | Sell | 20,00055,918 held (−26%) | $46.02 | $920K | +6.7% | — |
| Dec 16SEC | Kevin EngelPresident | Sell | 11,000349 held (−97%) | $46.21 | $508K | +6.3% | — |
| Nov 19SEC | Mark N RogersGeneral Counsel | Sell Plan | 20,00023,862 held (−46%) | $31.69 | $634K | +55.0% | — |
| Nov 19SEC | Guillaume Marie Jean RuttenCEO, President | Sell Plan | 10,000346,699 held (−3%) | $31.68 | $317K | +55.1% | — |
| Oct 17SEC | Guillaume Marie Jean RuttenCEO, President | Sell Plan | 10,000356,699 held (−3%) | $30.74 | $307K | +59.8% | — |
Insiders at AMKOR TECHNOLOGY, INC.
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| John T KimMember Of 10% Owner Group (6) | — | $485M | Feb 17, 2026 | — |
| 915 Investments, LpMember Of 10% Owner Group (2) | — | $485M | Feb 17, 2026 | — |
| Guillaume Marie Jean RuttenDirector | — | $9.5M | Aug 7, 2026 | — |
| Mark N RogersGeneral Counsel | — | $3.9M | Aug 19, 2026 | — |
| Gil C. TilyDirector | — | $2.1M | May 13, 2026 | — |
| Roger Anthony CarolinDirector | — | $1.5M | May 7, 2026 | — |
| Kevin K. EngelCEO, President | — | $1.5M | Jul 31, 2026 | — |
| Winston J ChurchillDirector | — | $1.1M | Jun 16, 2026 | — |
| Douglas A AlexanderDirector | — | $937K | Oct 6, 2026 | — |
| Maryfrances MccourtDirector | — | $920K | Dec 16, 2025 | — |
| Farshad HaghighiPresident | — | $789K | Feb 26, 2026 | — |
| Megan FaustCFO | — | $308K | Sep 10, 2026 | — |
AMKR stock: common questions
Are AMKOR TECHNOLOGY, INC. insiders buying AMKR stock?
In the past 12 months, 0 insiders reported open-market purchases of AMKR worth $0.
Are AMKOR TECHNOLOGY, INC. insiders selling AMKR stock?
12 insiders reported sales worth $992M over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is AMKR's 52-week range?
Over the past year AMKR has traded between $28.06 and $93.38. It last closed at $49.12 on Oct 9, 2026.