144 0001517137 XXXXXXXX LIVE 0001174169 ALGONQUIN POWER & UTILITIES CORP. 001-37946 354 DAVIS ROAD OAKVILLE A6 L6J2X1 0000000000 Starboard Value LP Affiliate of Director Common Shares J.P. Morgan Securities LLC

270 Park Avenue New York NY 10017

6300000 37863000.00 768691822 03/30/2026 NYSE Common Shares 03/08/2023 Open Market Purchases Open Market Purchases N 63489420 03/08/2023 Cash Y Common Shares to be sold were purchased by entities managed by Starboard Value LP between March 8, 2023 and August 15, 2023 in various open market transactions. 03/30/2026 Lindsey Cara, Authorized Signatory of Starboard Value LP