• Subject has at least a 6 month history of migraine (with or without aura) and including the following:

‣ 14 or less headache days per month during the 3 month period prior to the Screening Visit

⁃ 6 or more migraine days during the Observation Period

⁃ 14 or less headache days during the Observation Period

⁃ Pediatric Migraine Disability Assessment Scale (PedMIDAS) Disability Score of \>10 to ≤50, indicating mild (score of 11 to 30) or moderate (score of 31 to 50) disruption in daily activities, as assessed at the Baseline (Randomization) Visit

⁃ Ability to verbally distinguish migraine attacks from tension/cluster or other types of headaches

⁃ Migraine attacks, on average, lasting 4 - 72 hours if untreated

⁃ Subjects on prophylactic migraine medication are permitted to remain on therapy if the dose has been stable for at least 3 months (12 weeks) prior to the Screening Phase, and the dose is not expected to change during the course of the study. 2) Male and female subjects ≥ 6 to \<18 years; subjects must be less than 18 at the time of signing assent / consent.

∙ Subjects must have a weight of ≥40 kg (child cohort requirement ≥15 kg) at the Screening Visit.