Francis Tang insider trades: Diodes (DIOD) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Francis reports to the SEC
Open-market buys and sales
62 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| May 29, 2026 | DIOD | ↓ Sell | 15,330 | $112.04 | $1.7M | Direct | Jun 1, 2026 (3d) |
| May 27, 2026 | DIOD | ↓ Sell | 9,137 | $109.14 | $997K | Direct | May 27, 2026 (0d) |
| May 12, 2026 | DIOD | ↓ Sell | 3,643 | $108.00 | $393K | Direct | May 13, 2026 (1d) |
| Apr 14, 2022 | DIOD | ↑ Buy | 2,000 | $70.00 | $140K | Direct | Apr 18, 2022 (4d) |
| Nov 4, 2021 | DIOD | ↓ Sell | 10,226 | $103.59 | $1.1M | Direct | Nov 5, 2021 (1d) |
| Aug 27, 2021 | DIOD | ↓ Sell | 7,834 | $95.62 | $749K | Direct | Aug 27, 2021 (0d) |
| Aug 24, 2021 | DIOD | ↓ Sell | 9,000 | $93.03 | $837K | Direct | Aug 25, 2021 (1d) |
| Aug 23, 2021 | DIOD | ↓ Sell | 2,146 | $91.50 | $196K | Direct | Aug 25, 2021 (2d) |
| Mar 22, 2021 | DIOD | ↓ Sell | 11,775 | $88.86 | $1.0M | Direct | Mar 23, 2021 (1d) |
| Mar 22, 2021 | DIOD | ↓ Sell | 5,000 | $90.25 | $451K | Direct | Mar 23, 2021 (1d) |
| Dec 8, 2020 | DIOD | ↓ Sell | 11,411 | $71.01 | $810K | Direct | Dec 9, 2020 (1d) |
| Nov 30, 2020 | DIOD | ↓ Sell | 1,807 | $67.00 | $121K | Direct | Dec 1, 2020 (1d) |
| Nov 24, 2020 | DIOD | ↓ Sell | 1,806 | $66.31 | $120K | Direct | Nov 25, 2020 (1d) |
| Nov 16, 2020 | DIOD | ↓ Sell | 2,454 | $65.00 | $160K | Direct | Nov 18, 2020 (2d) |
| Oct 8, 2020 | DIOD | ↓ Sell | 2,577 | $61.50 | $158K | Direct | Oct 9, 2020 (1d) |
| Oct 1, 2020 | DIOD | ↓ Sell | 18,365 | $56.53 | $1.0M | Direct | Oct 1, 2020 (0d) |
| Aug 11, 2020 | DIOD | ↓ Sell | 3,707 | $52.79 | $196K | Direct | Aug 14, 2020 (3d) |
| Jul 2, 2020 | DIOD | ↓ Sell | 375 | $48.22 | $18K | By Son | Jul 6, 2020 (4d) |
| May 27, 2020 | DIOD | ↓ Sell | 9,786 | $50.62 | $495K | Direct | May 28, 2020 (1d) |
| Apr 29, 2020 | DIOD | ↓ Sell | 12,000 | $52.63 | $632K | Direct | May 1, 2020 (2d) |
| Dec 12, 2019 | DIOD | ↓ Sell | 310 | $49.45 | $15K | By Son | Dec 13, 2019 (1d) |
| Dec 11, 2019 | DIOD | ↓ Sell | 17,854 | $47.65 | $851K | Direct | Dec 13, 2019 (2d) |
| Nov 27, 2019 | DIOD | ↓ Sell | 2,669 | $46.75 | $125K | Direct | Dec 2, 2019 (5d) |
| Nov 15, 2019 | DIOD | ↓ Sell | 2,742 | $46.54 | $128K | Direct | Nov 19, 2019 (4d) |
| Nov 12, 2019 | DIOD | ↓ Sell | 2,454 | $46.50 | $114K | Direct | Nov 14, 2019 (2d) |
| Nov 7, 2019 | DIOD | ↓ Sell | 70 | $46.75 | $3K | By Son | Nov 12, 2019 (5d) |
| Oct 28, 2019 | DIOD | ↓ Sell | 14,546 | $45.06 | $655K | Direct | Oct 30, 2019 (2d) |
| May 29, 2019 | DIOD | ↓ Sell | 6,000 | $31.73 | $190K | Direct | May 30, 2019 (1d) |
| Feb 25, 2019 | DIOD | ↓ Sell | 300 | $43.13 | $13K | By Son | Feb 27, 2019 (2d) |
| Feb 22, 2019 | DIOD | ↓ Sell | 4,553 | $40.89 | $186K | Direct | Feb 25, 2019 (3d) |
| Feb 15, 2019 | DIOD | ↓ Sell | 19,267 | $40.42 | $779K | Direct | Feb 19, 2019 (4d) |
| Aug 27, 2018 | DIOD | ↓ Sell | 6,560 | $38.90 | $255K | Direct | Aug 28, 2018 (1d) |
| Jul 24, 2018 | DIOD | ↓ Sell | 4,696 | $38.54 | $181K | Direct | Jul 24, 2018 (0d) |
| Jul 18, 2018 | DIOD | ↓ Sell | 4,708 | $38.00 | $179K | Direct | Jul 19, 2018 (1d) |
| May 16, 2018 | DIOD | ↓ Sell | 8,600 | $33.41 | $287K | Direct | May 16, 2018 (0d) |
| Sep 27, 2017 | DIOD | ↓ Sell | 3,800 | $29.67 | $113K | Direct | Sep 28, 2017 (1d) |
| Sep 1, 2017 | DIOD | ↓ Sell | 11,957 | $28.33 | $339K | Direct | Sep 5, 2017 (4d) |
| Jul 5, 2017 | DIOD | ↓ Sell | 694 | $23.81 | $17K | Direct | Jul 6, 2017 (1d) |
| May 30, 2017 | DIOD | ↓ Sell | 2,365 | $25.89 | $61K | Direct | May 31, 2017 (1d) |
| May 16, 2017 | DIOD | ↓ Sell | 2,200 | $26.66 | $59K | Direct | May 17, 2017 (1d) |
| May 10, 2017 | DIOD | ↓ Sell | 6,639 | $26.50 | $176K | Direct | May 12, 2017 (2d) |
| Jul 5, 2016 | DIOD | ↓ Sell | 2,500 | $16.92 | $42K | Direct | Jul 6, 2016 (1d) |
| May 27, 2016 | DIOD | ↓ Sell | 7,750 | $17.95 | $139K | Direct | May 31, 2016 (4d) |
| Dec 17, 2015 | DIOD | ↓ Sell | 11,789 | $24.00 | $283K | Direct | Dec 21, 2015 (4d) |
| Jul 2, 2015 | DIOD | ↓ Sell | 2,500 | $23.02 | $58K | Direct | Jul 6, 2015 (4d) |
| May 27, 2015 | DIOD | ↓ Sell | 6,375 | $25.22 | $161K | Direct | May 28, 2015 (1d) |
| Jul 2, 2014 | DIOD | ↓ Sell | 2,500 | $28.82 | $72K | Direct | Jul 7, 2014 (5d) |
| Jun 9, 2014 | DIOD | ↓ Sell | 2,000 | $29.30 | $59K | Direct | Jun 10, 2014 (1d) |
| May 28, 2014 | DIOD | ↓ Sell | 5,275 | $27.52 | $145K | Direct | May 29, 2014 (1d) |
| May 29, 2013 | DIOD | ↓ Sell | 6,925 | $23.60 | $163K | Direct | May 30, 2013 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other DIOD insiders
Open-market trades in the last 12 months
About Francis Tang's insider trades
Francis Tang is Chief Technology Officer at Diodes (DIOD). Since Jul 13, 2006, Francis has reported 3 open-market purchases worth $167K and 59 sales worth $17.4M on SEC Form 4. In the last 12 months: 3 sales ($3.1M).
Their filings also include grants and awards (31 filings), shares withheld for taxes (22 filings), option exercises (14 filings). 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 DIOD insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.