X0609 4 2026-10-09 0 0001819576 Liquidia Corp LQDA 0001832592 Moomaw Scott false 419 DAVIS DRIVE, SUITE 100 MORRISVILLE NC 27560 0 1 0 0 Chief Commercial Officer 1 Common Stock 2026-10-09 4 M 0 3108 A 185992 D Common Stock 2026-10-09 4 M 0 4358 A 190350 D Common Stock 2026-10-12 4 S 0 8863 28.48 D 181487 D Performance Stock Units 2026-10-09 4 M 0 3108 0 D Common Stock 3108 15538 D Performance Stock Units 2026-10-09 4 M 0 4358 0 D Common Stock 4358 39222 D Performance stock units ("PSUs") convert into common stock on a one-for-one basis. On January 11, 2024, the Reporting Person was granted 49,723 PSUs which vest upon the following time-based vesting schedule: 25% of the PSUs shall vest on January 11, 2025 and the remaining PSUs shall vest ratably on a quarterly basis over three years thereafter. Of those PSUs, a total of 34,185 have vested as of the date of this Form 4. Includes (i) 5,208 unvested restricted stock units ("RSUs") of the 83,333 RSUs granted to the Reporting Person on January 11, 2023, (ii) 15,538 unvested RSUs of the 49,723 RSUs granted to the Reporting Person on January 11, 2024, (iii) 39,222 unvested RSUs of the 69,729 RSUs granted to the Reporting Person on January 11, 2025, (iv) 32,955 RSUs granted to the Reporting Person on January 16, 2026, none of which have vested as of the date of this Form 4 and (v) 3,049 shares acquired under the Liquidia Corporation 2020 Employee Stock Purchase Plan. On January 11, 2025, the Reporting Person was granted 69,729 PSUs which vest upon the following time-based vesting schedule: 25% of the PSUs shall vest on January 11, 2026 and the remaining PSUs shall vest ratably on a quarterly basis over three years thereafter. Of those PSUs, a total of 30,507 have vested as of the date of this Form 4. Transaction effected pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on December 15, 2023. These shares of common stock were sold to cover taxes associated with the settlement of RSUs and PSUs that were initially granted to the Reporting Person on January 11, 2023, January 11, 2024 and January 11, 2025. /s/ Scott Moomaw 2026-10-13