Chang David C (CIK 0001188184)

Latest company ownership

Role: Director
Shares held
157,744
Last filed at
Dec 2, 2025
Confidence Score
12.5
2025Q4
Confidence Score History
2006Q1 2025Q4

Recent buy/sell transactions

Exec date Filing date Company Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Dec 9, 2025 Dec 10, 2025 AXT INC Director Sell 20.0 -25,000 -15.85% $371K
Nov 28, 2025 Dec 2, 2025 AXT INC Director Sell 20.0 -50,000 -24.07% $576.3K
Nov 5, 2025 Nov 6, 2025 AXT INC Director Sell 20.0 -100,000 -32.49% $894K
May 28, 2020 Jun 1, 2020 AXT INC Director Sell 22.5 -12,800 -6.51% $70.1K
Aug 1, 2017 Aug 2, 2017 AXT INC Director Sell 22.5 -9,000 -5.18% $79.2K
Nov 23, 2010 Nov 23, 2010 AXT INC Director Sell 20.0 -58,000 -67.20% $472.8K
Aug 31, 2010 Aug 31, 2010 AXT INC Director Buy 83.8 +3,000 3.60% $15.5K
Aug 23, 2010 Aug 24, 2010 AXT INC Director Buy 83.8 +3,000 3.73% $16.5K
Aug 31, 2009 Sep 1, 2009 AXT INC Director Buy 82.5 +3,000 4.38% $5.4K
Aug 21, 2006 Aug 29, 2006 AXT INC Director Buy 90.0 +3,050 14.43% $9.7K
Feb 24, 2006 Mar 10, 2006 AXT INC Director Buy 90.0 +2,800 15.27% $8.3K
Feb 24, 2006 Mar 1, 2006 AXT INC Director Buy 90.0 +2,800 21.00% $8.3K