David C Chang

Director

David C Chang (Director) filed 6 Form 4 reports in the trailing twelve months (0 purchases, 6 sales), most often in AXT, Inc. (AXTI). The largest single filing was $1.5M of AXTI (40,000 sh across 2 lots, as filed), executed Mar 4.

Add to watchlist

Return, ttmiAverage return per filing, trailing twelve months

–

no purchases on file

Delay-adjustediThe same average, entered at disclosure dates

–

returns measure stock purchases only

Filings, ttm

0 buys · 6 sells

Median delay

–

execution → disclosure

Volume, ttmiDollar value disclosed in the trailing twelve months

$5.2M

shares × price, as filed

Last traded

Jun 15

Filed Jun 17

Median ADV $767.4M across their filed names

Open performance→

Volume by month

Buys $0 Sells $5.2M

Shares × price, as filed · by filing month · past 24 months

Sectors filed on

Technology 6 filings

Sector per market data · by filing · past 12 months

Most traded names

AXTI

AXT, Inc. AXTI · 0 buys · 6 sells 6 filings

Recent filings

AXTISALE AXT, Inc. View filing → $926K
8,333 sh × $111.17
Exec Jun 15
Filed Jun 17 · 5:30 PM ET AXTISALE AXT, Inc. View filing → $920K
20,000 sh × $46.00
Exec Mar 10
Filed Mar 12 · 5:30 PM ET AXTISALE AXT, Inc. View filing → $1.5M
40,000 sh across 2 lots
Exec Mar 4
Filed Mar 5 · 5:30 PM ET AXTISALE AXT, Inc. View filing → $371K
25,000 sh × $14.84
Exec Dec 9 2025
Filed Dec 10 2025 · 5:30 PM ET AXTISALE AXT, Inc. View filing → $576K
50,000 sh across 2 lots
Exec Nov 28 2025
Filed Dec 2 2025 · 5:30 PM ET AXTISALE AXT, Inc. View filing → $894K
100,000 sh × $8.94
Exec Nov 5 2025
Filed Nov 6 2025 · 5:30 PM ET