Not enough buy signals with a settled T+90 horizon to measure a track record yet.
Signal history
Explore the detailed record of transactions filed by Chang David C. Officer active across 2 companies, notably AXT INC. Aggregated, 14 reports have been published. Split: 0 buy · 7 sells. Total volume traded: €3m. Activity tracked since 20 May 2021. The latest transaction was disclosed on 10 March 2026 (Cession). Regulator: SEC (Form 4). All data is openly available.
Companies and markets linked to Chang David C
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
603 sharesCommon Stock, par value $.01 per shareSEC:0001225208-16-024010:0
14 of 14 declarations
About Chang David C
A declarant linked to AXT INC and TIME WARNER CABLE INC., with 14 filings in total. In the recent filings tracked, they consist only of sales, with a total amount of EUR 3049209, over the period from 2016-01-11 to 2026-06-17.