David C Chang insider trades: Axt (AXTI) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where David reports to the SEC
Open-market buys and sales
14 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Jun 15, 2026 | AXTI | ↓ Sell | 8,333 | $111.17 | $926K | Direct | Jun 17, 2026 (2d) |
| Mar 10, 2026 | AXTI | ↓ Sell | 20,000 | $46.00 | $920K | Direct | Mar 12, 2026 (2d) |
| Mar 5, 2026 | AXTI | ↓ Sell | 40,000 | $38.48 | $1.5M | Direct | Mar 5, 2026 (0d) |
| Dec 9, 2025 | AXTI | ↓ Sell | 25,000 | $14.84 | $371K | David C Chang Ttee David C.chang Revocab | Dec 10, 2025 (1d) |
| Dec 2, 2025 | AXTI | ↓ Sell | 50,000 | $11.53 | $576K | David C Chang Ttee David C.chang Revocab | Dec 2, 2025 (0d) |
| Nov 5, 2025 | AXTI | ↓ Sell | 100,000 | $8.94 | $894K | Direct | Nov 6, 2025 (1d) |
| May 28, 2020 | AXTI | ↓ Sell | 12,800 | $5.48 | $70K | Direct | Jun 1, 2020 (4d) |
| Aug 1, 2017 | AXTI | ↓ Sell | 9,000 | $8.80 | $79K | Direct | Aug 2, 2017 (1d) |
| Nov 23, 2010 | AXTI | ↓ Sell | 58,000 | $8.15 | $473K | Direct | Nov 23, 2010 (0d) |
| Aug 31, 2010 | AXTI | ↑ Buy | 3,000 | $5.15 | $15K | Direct | Aug 31, 2010 (0d) |
| Aug 23, 2010 | AXTI | ↑ Buy | 3,000 | $5.49 | $16K | Direct | Aug 24, 2010 (1d) |
| Aug 31, 2009 | AXTI | ↑ Buy | 3,000 | $1.81 | $5K | Direct | Sep 1, 2009 (1d) |
| Aug 28, 2006 | AXTI | ↑ Buy | 3,050 | $3.18 | $10K | Direct | Aug 29, 2006 (1d) |
| Feb 24, 2006 | AXTI | ↑ Buy | 2,800 | $2.97 | $8K | Direct | Mar 1, 2006 (5d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other AXTI insiders
Open-market trades in the last 12 months
About David C Chang's insider trades
David C Chang is a director at Axt (AXTI). Since Feb 24, 2006, David has reported 5 open-market purchases worth $55K and 9 sales worth $5.8M on SEC Form 4. In the last 12 months: 5 sales ($4.3M).
Their filings also include grants and awards (46 filings), option exercises (5 filings), shares returned to the company (1 filing), other transactions (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 AXTI insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.