X0508 4 2024-02-29 0 0001819576 Liquidia Corp LQDA 0001747055 Adair Jason 419 DAVIS DRIVE, SUITE 100 MORRISVILLE NC 27560 0 1 0 0 Chief Business Officer 1 Common Stock 2024-02-29 4 M 0 1562 A 97867 D Common Stock 2024-02-29 4 S 0 455 14.17 D 97412 D Restricted Stock Unit 2024-02-29 4 M 0 1562 0 D Common Stock 1562 12500 D Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's common stock. On January 16, 2022, the Reporting Person was granted 25,000 RSUs with 25% of the RSUs vesting on February 28, 2023 and the remaining RSUs vesting ratably on a quarterly basis over three years thereafter. Of those RSUs, a total of 12,500 have vested through February 29, 2024. Includes (i) 39,588 RSUs granted to the Reporting Person on January 11, 2024, none of which have vested as of the date of this Form 4, (ii) 25,000 RSUs granted to the Reporting Person on July 6, 2023, none of which have vested as of the date of this Form 4, (iii) 261 unvested RSUs of the 4,167 RSUs granted to the Reporting Person on March 18, 2021 and (iv) 8,059 shares acquired under the Liquidia Corporation 2020 Employee Stock Purchase Plan. These shares were sold to cover taxes associated with the settlement of RSUs. Transaction effected pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on June 13, 2022. /s/ Jason Adair 2024-03-04