David C. Chang

AXT IncTime Warner Cable Inc.

Insider activity · 24 months0 buys6 salesCumulative net flow

Nov 24 · 0 buys · 0 salesDec 24 · 0 buys · 0 salesJan 25 · 0 buys · 0 salesFeb 25 · 0 buys · 0 salesMar 25 · 0 buys · 0 salesApr 25 · 0 buys · 0 salesMay 25 · 0 buys · 0 salesJun 25 · 0 buys · 0 salesJul 25 · 0 buys · 0 salesAug 25 · 0 buys · 0 salesSept 25 · 0 buys · 0 salesOct 25 · 0 buys · 0 salesNov 25 · 0 buys · 2 salesDec 25 · 0 buys · 2 salesJan 26 · 0 buys · 0 salesFeb 26 · 0 buys · 0 salesMar 26 · 0 buys · 2 salesApr 26 · 0 buys · 0 salesMay 26 · 0 buys · 0 salesJun 26 · 0 buys · 0 salesJul 26 · 0 buys · 0 salesAug 26 · 0 buys · 0 salesSept 26 · 0 buys · 0 salesOct 26 · 0 buys · 0 sales

Total declarations

Companies

▲ Purchases (0 ops.)

—

▼ Sales (7 ops.)

€3.0M

Latest filing published 17 Jun 2026 for AXT INC. Read the official filing

Filing timeline

BuySale

David C. Chang

Insider track record

Disclosed buys

Disclosed sells

Not enough buy signals with a settled T+90 horizon to measure a track record yet.

Signal history

David C. Chang: trading record in brief

This profile gathers the share dealings of David C. Chang across 2 companies, led by AXT Inc and Time Warner Cable Inc. Over a trading history stretching from 8 January 2016 to 15 June 2026, the count stands at 14 filings.

No open-market purchase appears, only 7 sales worth €3.0M. The amount is not disclosed for 1 filing. Besides market trades, the filings include 6 share grants and 1 option exercise. So far in 2026, the count stands at no purchases and 3 sales.

Most recently, on 17 June 2026, the filings show an open-market sale in AXT Inc. Between a trade and the moment it shows up on SEC (Form 4), the median delay is 2 days. US insiders must file a Form 4 within two business days of a trade. Sales are harder to read than purchases, since they often meet personal needs such as tax or diversification. This summary is built from SEC (Form 4) disclosures alone and does not predict where the share price will go.