InsidersTradesSigma
Total declarations
Companies
▲ Purchases (0 ops.)
▼ Sales (0 ops.)
Insider track record
Board DirectorDisclosed buys
0
Disclosed sells
0
Not enough buy signals with a settled T+90 horizon to measure a track record yet.
Signal history
No signal scores available.
Explore the full record of transactions filed by Chang Derek, Director. Director active across 2 companies, notably Liberty Media Corp. In total, 10 disclosures have been logged. History available since 10 December 2021. The latest transaction was disclosed on 15 December 2025 (J). Regulator: SEC (Form 4). All data is openly available.
Companies and markets linked to Chang Derek
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
Declarations10 total
1,024 shares0Series C Liberty Live Group Common StockSEC:0001225208-25-010094:0
1,024 shares0Series C Liberty Live Common StockSEC:0001225208-25-010090:0
1,205 shares0Series C Liberty Formula One Common StockSEC:0001225208-24-010665:0
3,602 shares0Series C Liberty SiriusXM Common StockSEC:0001225208-24-008591:0
1,596 shares0Series C Liberty SiriusXM Common StockSEC:0001225208-24-008213:0
526 shares0Series C Liberty Formula One Common StockSEC:0001225208-23-011004:0
858 shares0Series C Liberty Formula One Common StockSEC:0001225208-23-008280:0
206 shares0Series C Liberty Braves Common StockSEC:0001225208-23-007610:0
103 shares0Series C Liberty Braves Common StockSEC:0001225208-22-012521:0
103 shares0Series C Liberty Braves Common StockSEC:0001225208-21-014920:0
10 of 10 declarations
About Chang Derek
CHANG DEREK is Administrateur and is linked to Liberty Media Corp, where he is President & CEO, as well as Liberty Live Holdings, Inc., where he is Director. He has 10 filings in total, and within the sampled recent filings the period runs from 2021-12-14 to 2025-12-17, with sum_buy_eur at 0 and sum_sell_eur at 0.
