X0609 4 2026-07-27 0 0001819576 Liquidia Corp LQDA 0001747055 Adair Jason false 419 DAVIS DRIVE, SUITE 100 MORRISVILLE NC 27560 0 1 0 0 Chief Business Officer 1 Common Stock 2026-07-27 4 S 0 688 87.53 D 216438 D 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 restricted stock units ("RSUs") that were initially granted to the Reporting Person on July 6, 2023. Includes (i) 6,250 unvested RSUs of the 25,000 RSUs granted to the Reporting Person on July 6, 2023, (ii) 14,845 unvested RSUs of the 39,588 RSUs granted to the Reporting Person on January 11, 2024, (iii) 38,684 unvested RSUs of the 61,895 RSUs granted to the Reporting Person on January 11, 2025, (iv) 27,683 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) 12,023 shares acquired under the Liquidia Corporation 2020 Employee Stock Purchase Plan. /s/ Jason Adair 2026-07-29