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Guo Jack Q. – Insider Transactions
Ticker
Owner
Relationship
Date
Transaction
Cost
#Shares
Value ($)
#Shares Total
SEC Form 4
CSTM
Guo Jack Q.
EVP & CFO
May 05 '26
Sale
32.62
25,201
822,057
185,368
May 07
CSTM
Guo Jack Q.
EVP & CFO
Mar 10 '26
Sale
25.87
41,717
1,079,219
190,879
Mar 11