Winston J Churchill insider trades: Amkor Technology (AMKR) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Winston reports to the SEC
and 6 more companies
Open-market buys and sales
98 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Jun 12, 2026 | AMKR | ↓ Sell | 5,000 | $78.20 | $391K | Direct | Jun 16, 2026 (4d) |
| May 5, 2026 | AMKR | ↓ Sell | 7,000 | $76.45 | $535K | Direct | May 7, 2026 (2d) |
| Dec 15, 2025 | AMKR | ↓ Sell | 5,000 | $44.29 | $221K | Direct | Dec 17, 2025 (2d) |
| Aug 27, 2024 | AMKR | ↓ Sell | 20,000 | $32.97 | $659K | Direct | Aug 29, 2024 (2d) |
| Mar 7, 2024 | AMKR | ↓ Sell | 11,903 | $36.20 | $431K | Direct | Mar 8, 2024 (1d) |
| Aug 28, 2023 | SCTL | ↑ Buy | 62,500 | $0.40 | $25K | Direct | Aug 28, 2023 (0d) |
| Jun 13, 2023 | ISSC | ↓ Sell | 3,499 | $6.90 | $24K | Direct | Jun 14, 2023 (1d) |
| Jun 6, 2023 | ISSC | ↓ Sell | 1,570 | $6.90 | $11K | Direct | Jun 6, 2023 (0d) |
| May 19, 2023 | ISSC | ↓ Sell | 1,280 | $7.00 | $9K | Direct | May 30, 2023 (11d) |
| Feb 16, 2023 | AMKR | ↓ Sell | 20,000 | $27.29 | $546K | Direct | Feb 17, 2023 (1d) |
| Dec 7, 2022 | AMKR | ↓ Sell | 20,000 | $26.00 | $520K | Direct | Dec 9, 2022 (2d) |
| Nov 29, 2021 | AMKR | ↓ Sell | 20,000 | $22.42 | $448K | Direct | Dec 1, 2021 (2d) |
| Aug 31, 2021 | BXRX | ↑ Buy | 100,000 | $0.63 | $63K | Direct | Aug 31, 2021 (0d) |
| Jun 7, 2021 | BXRX | ↑ Buy | 25,000 | $0.78 | $20K | Direct | Jun 8, 2021 (1d) |
| Jun 2, 2021 | ISSC | ↓ Sell | 10,000 | $5.52 | $55K | Direct | Jun 3, 2021 (1d) |
| May 25, 2021 | AMKR | ↓ Sell | 26,106 | $20.66 | $539K | Direct | May 26, 2021 (1d) |
| Mar 10, 2021 | ISSC | ↓ Sell | 25,136 | $6.01 | $151K | Direct | Mar 11, 2021 (1d) |
| Feb 12, 2021 | AMKR | ↓ Sell | 8,207 | $24.21 | $199K | Direct | Feb 16, 2021 (4d) |
| Dec 17, 2020 | ISSC | ↓ Sell | 26,853 | $7.84 | $211K | Direct | Dec 17, 2020 (0d) |
| May 27, 2020 | ISSC | ↓ Sell | 20,000 | $5.04 | $101K | Direct | May 27, 2020 (0d) |
| Mar 26, 2020 | BXRX | ↑ Buy | 25,000 | $2.44 | $61K | Direct | Mar 30, 2020 (4d) |
| Mar 26, 2020 | BXRX | ↑ Buy | 6,500 | $2.28 | $15K | By Family Partnership | Mar 30, 2020 (4d) |
| Feb 24, 2020 | ISSC | ↓ Sell | 68,000 | $6.04 | $410K | Direct | Feb 25, 2020 (1d) |
| Feb 21, 2020 | AMKR | ↓ Sell | 4,700 | $12.64 | $59K | Direct | Feb 24, 2020 (3d) |
| Feb 19, 2019 | AMKR | ↓ Sell | 17,476 | $9.42 | $165K | Direct | Feb 20, 2019 (1d) |
| Mar 9, 2018 | AMKR | ↓ Sell | 40,000 | $11.36 | $454K | Direct | Mar 12, 2018 (3d) |
| Feb 16, 2018 | ISSC | ↓ Sell | 28,808 | $3.20 | $92K | by CIP Capital | Feb 21, 2018 (5d) |
| Jun 27, 2017 | RWLK | ↓ Sell | 65,218 | $3.05 | $199K | Direct | Jun 28, 2017 (1d) |
| Jun 27, 2017 | RWLK | ↓ Sell | 21,782 | $3.05 | $67K | Direct | Jun 28, 2017 (1d) |
| May 18, 2017 | AMKR | ↓ Sell | 13,402 | $11.00 | $147K | Direct | May 19, 2017 (1d) |
| May 12, 2017 | AMKR | ↓ Sell | 56,598 | $11.96 | $677K | Direct | May 15, 2017 (3d) |
| Aug 16, 2016 | RWLK | ↓ Sell | 74,962 | $6.37 | $477K | Direct | Aug 17, 2016 (1d) |
| Aug 16, 2016 | RWLK | ↓ Sell | 25,038 | $6.37 | $159K | Direct | Aug 17, 2016 (1d) |
| Jun 3, 2016 | RWLK | ↓ Sell | 14,288 | $7.89 | $113K | Direct | Jun 6, 2016 (3d) |
| Jun 3, 2016 | RWLK | ↓ Sell | 4,772 | $7.89 | $38K | Direct | Jun 6, 2016 (3d) |
| Jun 1, 2016 | RWLK | ↓ Sell | 8,523 | $7.74 | $66K | Direct | Jun 2, 2016 (1d) |
| Jun 1, 2016 | RWLK | ↓ Sell | 2,847 | $7.74 | $22K | Direct | Jun 2, 2016 (1d) |
| May 26, 2016 | RWLK | ↓ Sell | 20,256 | $8.69 | $176K | Direct | May 27, 2016 (1d) |
| May 26, 2016 | RWLK | ↓ Sell | 6,766 | $8.69 | $59K | Direct | May 27, 2016 (1d) |
| May 24, 2016 | RWLK | ↓ Sell | 1,050 | $8.99 | $9K | Direct | May 25, 2016 (1d) |
| May 24, 2016 | RWLK | ↓ Sell | 350 | $8.99 | $3K | Direct | May 25, 2016 (1d) |
| May 20, 2016 | REPH | ↓ Sell | 43,275 | $7.90 | $342K | By SCP Vitalife Partners II LP | May 23, 2016 (3d) |
| May 20, 2016 | REPH | ↓ Sell | 14,606 | $7.91 | $116K | By SCP Vitalife Partners (Israel) II, L. | May 23, 2016 (3d) |
| May 20, 2016 | RWLK | ↓ Sell | 12,105 | $9.09 | $110K | Direct | May 23, 2016 (3d) |
| May 20, 2016 | RWLK | ↓ Sell | 4,043 | $9.09 | $37K | Direct | May 23, 2016 (3d) |
| Jan 15, 2016 | RWLK | ↓ Sell | 37,481 | $10.30 | $386K | Direct | Jan 20, 2016 (5d) |
| Jan 15, 2016 | RWLK | ↓ Sell | 12,519 | $10.30 | $129K | Direct | Jan 20, 2016 (5d) |
| Nov 30, 2015 | REPH | ↓ Sell | 450 | $9.00 | $4K | By SCP Vitalife Partners II, L.P. | May 23, 2016 (175d) |
| Aug 11, 2015 | AMKR | ↑ Buy | 11,300 | $4.35 | $49K | Direct | Aug 12, 2015 (1d) |
| Apr 20, 2015 | GRIF | ↓ Sell | 14,224 | $31.80 | $452K | Direct | Apr 21, 2015 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other AMKR insiders
Open-market trades in the last 12 months
About Winston J Churchill's insider trades
Winston J Churchill is a director at Amkor Technology (AMKR). Since Jun 30, 2005, Winston has reported 25 open-market purchases worth $9.5M and 73 sales worth $12.3M on SEC Form 4. In the last 12 months: 3 sales ($1.1M).
Their filings also include grants and awards (101 filings), option exercises (29 filings), other transactions (15 filings), shares returned to the company (1 filing). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every AMKR insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.