Insider Trading History of Chang David C

The following table details the insider trading activities (stock purchases, stock sales, and stock option exercises) by Chang David C since 2006. The trader's CIK number is 1188184. At the time of the last reporting, Chang David C was the Officer of Axt Inc. (stock ticker symbol AXTI). Also see all insider trading activities at Axt Inc.

Note that in the past CHANG DAVID C also reported insider trading activities as an insider of the following companies:

Yearly summary of insider trading at Time Warner Cable Inc. (TWC) by Chang David C

Insider Buying Insider Sales Option Exercises
Year Symbol Shares Value Shares Value Shares Value
2016 TWC 0 $0 0 $0 603 $0
2015 TWC 0 $0 0 $0 1,632 $0
2014 TWC 0 $0 0 $0 919 $0
2013 TWC 0 $0 0 $0 1,296 $0

Yearly summary of insider trading at Axt Inc (AXTI) by Chang David C

Insider Buying Insider Sales Option Exercises
Year Symbol Shares Value Shares Value Shares Value
2020 AXTI 0 $0 12,800 $70,144 0 $0
2017 AXTI 0 $0 9,000 $79,200 0 $0
2010 AXTI 6,000 $31,920 58,000 $474,150 0 $0
2009 AXTI 3,000 $5,430 0 $0 0 $0
2006 AXTI 5,850 $18,023 0 $0 0 $0


Insider trading activities at 2 companies by Chang David C:

1. Time Warner Cable Inc. (TWC)

2. Axt Inc (AXTI)

Table 1. Insider trading of Time Warner Cable Inc. (TWC) by Chang David C

Trade Date Symbol Trade Type Shares Price ($) Value ($)
2016-01-08 TWC Option Ex 603 .00 0
2015-07-08 TWC Option Ex 722 .00 0
2015-02-13 TWC Option Ex 910 .00 0
2014-02-14 TWC Option Ex 919 .00 0
2013-02-12 TWC Option Ex 1,296 .00 0

Table 2. Insider trading of Axt Inc (AXTI) by Chang David C

Trade Date Symbol Trade Type Shares Price ($) Value ($)
2020-05-28 AXTI Sale 12,800 5.48 70,144
2017-08-01 AXTI Sale 9,000 8.80 79,200
2010-11-23 AXTI Sale 58,000 8.18 474,150
2010-08-31 AXTI Buy 3,000 5.15 15,450
2010-08-23 AXTI Buy 3,000 5.49 16,470
2009-08-31 AXTI Buy 3,000 1.81 5,430
2006-08-23 AXTI Buy 550 3.15 1,732
2006-08-28 AXTI Buy 1,000 3.40 3,400
2006-08-21 AXTI Buy 1,500 3.05 4,575
2006-02-24 AXTI Buy 2,800 2.97 8,316

Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Chang David C (Officer of Axt Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.



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