Core Insights - Astronics shares surged by as much as 21%, reaching the highest level since 2018, following the announcement of plans to issue $210 million in convertible senior notes due in 2031 and to repurchase a portion of its outstanding 2030 notes [2] Company Actions - The company plans to issue $210 million of convertible senior notes, which are set to mature in 2031 [2] - In addition to the note issuance, Astronics intends to repurchase a portion of its outstanding 2030 notes [2]