X0609 4 2026-08-25 0 0000008063 ASTRONICS CORP ATRO 0001337084 Keane Robert S false 130 COMMERCE WAY EAST AURORA NY 14052 1 0 0 0 0 $.01 PV Com Stk 13934 D $.01 PV CL B STK 2786 D $.01 PV CL B STK 248263 I Note $.01 PV Com Stk 2026-08-25 4 C 0 76000 0 A 76000 I Note $.01 PV CL B STK 2026-08-25 4 C 0 76000 0 D 173838 I Note Reporting Person is one of multiple potential beneficiaries to the direct owner of these shares, which is a trust (EAK & KRK Trust U/A/D 10-15-97 FBO Elizabeth A. Keane). The entire amount of the trust's interest is reported on this form, however the Reporting Person's proportionate interest is below 25%. Conversion of 76,000 Class B shares held by Boston & Saranac LLC on August 25, 2026. The direct owner is Boston & Saranac LLC, a Delaware limited liability company ("Boston & Saranac"). Boston & Saranac is 100% owned by a trust whose beneficiaries are the Reporting Person and his spouse /s/Julie Davis as Power of Attorney for Robert Sprague Keane 2026-08-26