David C. Chang

David C. Chang: Director at AXT. What David C. Chang holds in an AI or semiconductor company tracked on Silicon Floor, from their SEC filings, broken down: the shares held and how, then any restricted shares, options or other rights declared.

AXT (AXTI)

David C. Chang holds 197,909 AXT shares (0.30% of the company), worth about $12.8M at the last price, according to the Form 4 of Jun 15, 2026.

• Shares held: 132,744 (0.20%), $8.6M — Held through trusts (DAVID C CHANG TTEE DAVID C.CHANG REVOCABLE TRUST).
• Shares held: 65,165 (0.10%), $4.2M — Held in their own name.

Declarations

• AXT (AXTI) — Form 4 of Jun 15, 2026: open-market sale of 8,333 at $111.17; 65,165 shares after 0001437749-26-020894
• AXT (AXTI) — Form 4 of Jun 4, 2026: grant or award of 754; 73,498 shares after 0001437749-26-019723
• AXT (AXTI) — Form 4 of Mar 10, 2026: open-market sale of 20,000 at $46.00; 72,744 shares after 0001437749-26-007898
• AXT (AXTI) — Form 4 of Mar 5, 2026: open-market sale of 20,000 at $38.53; open-market sale of 20,000 at $38.42; 92,744 shares after 0001437749-26-007098
• AXT (AXTI) — Form 4 of Dec 9, 2025: open-market sale of 25,000 at $14.84; 132,744 shares after 0001437749-25-037434
• AXT (AXTI) — Form 4 of Dec 2, 2025: open-market sale of 25,000 at $10.72; open-market sale of 25,000 at $12.33; 157,744 shares after 0001437749-25-036693
• AXT (AXTI) — Form 4 of Nov 5, 2025: open-market sale of 100,000 at $8.94; 207,744 shares after 0001437749-25-033659
• AXT (AXTI) — Form 4 of May 15, 2025: grant or award of 55,172; 307,744 shares after 0001415889-25-013458

Sources: SEC Schedules 13D and 13G (stakes above 5%, which count everything a person votes or can acquire within 60 days) and Forms 3, 4 and 5 (the shares a director, officer or 10% owner holds, filed within two business days of each trade). Values at the last price.

All holders · Who owns each AI company · All tracked companies · The AI market