• Provision of written informed consent/assent.

• Male or female, aged ≥12 years at the time of providing written informed consent/assent.

• Diagnosis of hereditary angioedema (HAE)

• History of at least 3 HAE attacks within the 3 consecutive months prior to Screening Visit

• Predefined number of attacks during the Screening Period

• Reliable access and ability to use standard of care on-demand treatments to effectively manage acute HAE attacks.

• Willing and able to adhere to all protocol requirements, including eDiary and ePRO data recording.

• Female participants of childbearing potential must agree to the protocol specified pregnancy testing and contraception methods.