Insider · CIK 0001188184
David C Chang
Files at AXTI (AXT INC). First filing Nov 6, 2025, latest Jun 17, 2026.
In brief
David C Chang files SEC Form 4 as director at AXTI (AXT INC). Since Nov 6, 2025, David C Chang has reported 0 open-market buys worth $0 and 6 open-market sells worth $5.2M, the latest filed on Jun 17, 2026.
A track record needs three past buys with six months of prices behind them; David C Chang has 0, so none is measured yet.
The newest scored trade: sold $926k of AXTI on Jun 15, 2026, filed Jun 17, 2026, scored 59 (moderate). In the last 12 months: 0 buys worth $0 and 6 sells worth $5.2M.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
AXTI: AXT INC
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 59Moderate | AXT INC | $926k 8,333 shares | -11% | +5918% from low-21% from high | |
| 59Moderate | AXT INC | $920k 20,000 shares | -22% | +3719% from low-4% from high | |
| 65Notable | AXT INC | $1.5M 40,000 shares | -30% | +3273% from low-16% from high | |
| 43Moderate | AXT INC | $371k 25,000 shares | -16% | +1190% from low0% from high | |
| 47Moderate | AXT INC | $576k 50,000 shares | -24% | +822% from low-3% from high | |
| 64Notable | AXT INC | $894k 100,000 shares | -32% | +684% from low0% from high |
Planned sales
Form 144 notices this insider filed before selling restricted or control stock, newest first.
| Filed | Company | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Jun 8, 2026 | AXTI AXT INC | 8,333 0.01% of outstanding | $797k | Jun 8, 2026 | $920k |
| Mar 3, 2026 | AXTI AXT INC | 60,000 0.13% of outstanding | $2.8M | Mar 3, 2026 | $679k |
| Nov 25, 2025 | AXTI AXT INC | 100,000 0.21% of outstanding | $934k | Nov 25, 2025 | $894k |
| Nov 5, 2025 | AXTI AXT INC | 100,000 0.22% of outstanding | $906k | Nov 5, 2025 | none |
Transactions
Every row this insider has filed, 10 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Jun 15, 2026 | AXTI AXT INC | SOpen-market sale Common Stock | -8,333 | $111.17 | $926k | 65,165 | Jun 17, 2026 |
| Jun 4, 2026 | AXTI AXT INC | AGrant or award Common Stock | +754 | - | - | 73,498 | Jun 5, 2026 |
| Mar 10, 2026 | AXTI AXT INC | SOpen-market sale Common Stock | -20,000 | $46.00 | $920k | 72,744 | Mar 12, 2026 |
| Mar 4, 2026 | AXTI AXT INC | SOpen-market sale Common Stock | -20,000 | $38.53 | $771k | 112,744 | Mar 5, 2026 |
| Mar 5, 2026 | AXTI AXT INC | SOpen-market sale Common Stock | -20,000 | $38.42 | $768k | 92,744 | Mar 5, 2026 |
| Dec 9, 2025 | AXTI AXT INC | SOpen-market sale Common Stockindirect: DAVID C CHANG TTEE DAVID C.CHANG REVOCABLE TRUST | -25,000 | $14.84 | $371k | 132,744 | Dec 10, 2025 |
| Nov 28, 2025 | AXTI AXT INC | SOpen-market sale Common Stockindirect: DAVID C CHANG TTEE DAVID C.CHANG REVOCABLE TRUST | -25,000 | $10.72 | $268k | 182,744 | Dec 2, 2025 |
| Dec 2, 2025 | AXTI AXT INC | SOpen-market sale Common Stockindirect: DAVID C CHANG TTEE DAVID C.CHANG REVOCABLE TRUST | -25,000 | $12.33 | $308k | 157,744 | Dec 2, 2025 |
| Nov 5, 2025 | AXTI AXT INC | SOpen-market sale Common Stock | -100,000 | $8.94 | $894k | 207,744 | Nov 6, 2025 |
| May 15, 2025 | AXTI AXT INC | AGrant or award Common Stock | +55,172 | - | - | 307,744 | May 16, 2025 |
Questions about David C Chang
Answered from the filings on this page, as of the latest one.
Is David C Chang buying or selling?
In the last 12 months David C Chang reported 0 open-market buys worth $0 and 6 open-market sells worth $5.2M on SEC Form 4; the latest was sold $926k of AXTI on Jun 15, 2026. Grants, option exercises and tax withholding are not counted.
How did David C Chang's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and David C Chang has 0.
Where does David C Chang file Form 4?
David C Chang has filed Form 4 at AXTI (AXT INC). A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.