Insiders who reported open-market trades in the last 12 months at the companies David C. Chang files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
Morris S. Young - $31.62M in AXTI purchases and sales in the last 12 months
Jesse Chen - $10.25M in AXTI purchases and sales in the last 12 months
Gary L. Fischer - $6.44M in AXTI purchases and sales in the last 12 months
Leonard J. Leblanc - $415K in AXTI purchases and sales in the last 12 months
More insiders (A-Z)
Browse nearby insider profiles in alphabetical order.
David C. Chang is a corporate insider, tracked as Director of AXT INC (AXTI). InsiderAlpha holds 7 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did David C. Chang last file a Form 4?
The most recent primary Form 4 on record is dated 17 June 2026, one of 7 filings going back to 2025.
Has David C. Chang been buying or selling stock?
Recorded transactions: 0 open-market purchases and 7 open-market sales ($4.86M) across all tracked filings.
David C. Chang is Director of AXT INC (AXTI). 7 SEC Form 4 filings on record going back to 2025, most recently on 17 June 2026. Most recent open-market trade: sold $926K of AXTI on 17 June 2026. Lifetime open-market sales: $4.86M.
Recent transactions
9
The latest 9 SEC Form 4 transactions reported by David C. Chang.
InsiderAlpha's records for David C. Chang go back to 2025: 7 primary Form 4 filings, an average of 3.5 per year. No recorded transaction carries a Rule 10b5-1 plan flag. An absent flag does not establish whether a transaction was pre-arranged or discretionary.