X0607 3 2026-04-29 0 0001540171 Avalyn Pharma Inc. AVLN 0001640742 Carlson Douglas R false 105 W FIRST STREET BOSTON MA 02127 false true false false See Remarks Stock Option (right to buy) 4.62 2034-06-10 Common Stock 270498 D Stock Option (right to buy) 4.81 2035-09-10 Common Stock 83576 D 25% of the shares underlying this option vested and became exercisable on May 1, 2025, with the remaining 75% vesting in thirty-six (36) substantially equal monthly installments thereafter, subject to the Reporting Person's continued service on each such vesting date. 25% of the shares underlying this option vest and become exercisable on May 29, 2026, with the remaining 75% vesting in thirty-six (36) substantially equal monthly installments thereafter, subject to the Reporting Person's continued service on each such vesting date. Chief Financial and Business Officer Exhibit 24 - Power of Attorney /s/ Douglas Carlson 2026-04-29