Operator
Operator
Good afternoon. My name is Chris, and I'll be your conference operator today. At this time, I'd like to welcome everyone to Penumbra's Fourth Quarter and Year End 2021 Conference Call. All lines have been placed on mute to prevent any background noise. After the speaker's remarks, there will be a question-and-answer session. [Operator instructions] I would like to introduce miss Jee Hamlyn-Harris Investor Relations for Penumbra, Miss Hamlyn-Harris, you may begin your conference.