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Chao John Tsung-chen – Insider Transactions
Ticker
Owner
Relationship
Date
Transaction
Cost
#Shares
Value ($)
#Shares Total
SEC Form 4
WLK
Chao John Tsung-chen
Director
Feb 17 '26
Option Exercise
0.00
570
0
7,608
Feb 19
WLK
Chao John Tsung-chen
Director
Feb 18 '25
Option Exercise
0.00
513
0
6,709
Feb 20