0001104659-20-054935 SC TO-I/A 3 20200501 20200501 ATLANTIC POWER CORP 0001419242 4900 550886410 A1 1231 SC TO-I/A 34 005-87139 20838296 3 ALLIED DRIVE SUITE 155 DEDHAM MA 02026 617-977-2400 3 ALLIED DRIVE SUITE 155 DEDHAM MA 02026 ATLANTIC POWER CORP 0001419242 4900 550886410 A1 1231 SC TO-I/A 3 ALLIED DRIVE SUITE 155 DEDHAM MA 02026 617-977-2400 3 ALLIED DRIVE SUITE 155 DEDHAM MA 02026 SC TO-I/A 1 a20-18294_1sctoia.htm SC TO-I/A EX-99.(A)(5)(II) 2 a20-18294_1ex99da5ii.htm EX-99.(A)(5)(II) GRAPHIC 3 g182941mmi001.jpg GRAPHIC