144 0002045443 XXXXXXXX LIVE 0002019061 South Bow Corporation 001-42021 707 5th Street SW Suite 900 CALGARY A0 T2P 1V8 587-318-5410 Bevin Wirzba Director President and CEO Common Shares Canaccord Genuity Corp.

Centennial Place - East Tower 520 3rd Ave SW, Suite 2400 Calgary A0 T2P 0R3

150451 6816415.94 208250512 03/09/2026 TSX Common Shares 03/09/2026 Stock Option Exercise South Bow Corporation N 150451 03/09/2026 Cashless Exercise Y 03/09/2026 /s/ Bevin Wirzba