Post Approval Study - Evaluate the Long-Term Safety and Effectiveness of the WEB Device

Key Inclusion Criteria:

• Patient must be ≥ 18 at the time of screening

• Patient must have a single ruptured or unruptured IA requiring treatment

• Patient must sign and date an IRN approved written informed consent prior toinitiation of any study procedures

Key Exclusion Criteria:

• Patient has an IA with characteristics unsuitable for endovascular treatment

• Patient has conditions placing them at high risk for ischemic stroke or hasexhibited ischemic symptoms such as transient ischemic attacks, minor strokes, orstroke-in-evolution within the prior 30 days

• Patient has had an SAH from a non-index IA or other intracranial hemorrhage within 90 days

• Patient index IA was previously treated

• Patient is pregnant