X0609 4 2026-05-19 0 0001819576 Liquidia Corp LQDA 0001727492 Caligan Partners LP false 780 THIRD AVENUE 30TH FLOOR NEW YORK NY 10017 1 0 1 1 See Remarks 0001785557 JOHNSON DAVID EDWARD false 780 THIRD AVENUE 30TH FLOOR NEW YORK NY 10017 1 0 1 0 0 Common Stock, $0.001 par value per share ("Common Stock") 2026-05-19 4 S 0 5300 59.98 D 8133651 I See footnote Common Stock 2026-05-19 4 P 0 5300 59.98 A 8138951 I See footnote Common Stock 18396 D Securities held by certain funds (the "Caligan Funds") and managed accounts (the "Caligan Accounts", and together with the Caligan Funds, the "Caligan Funds and Accounts") to which Caligan serves as investment manager and related entities. David Johnson ("Mr. Johnson", and together with Caligan, the "Reporting Persons") is the Managing Partner of Caligan and a Managing Member of Caligan Partners GP LLC, the general partner of Caligan. Represents a transaction between the Caligan Funds. Mr. Johnson is deemed to hold the securities reported herein for the benefit of the Caligan Funds and Accounts, and may, after vesting, if applicable, transfer the securities directly to the Caligan Funds and Accounts. Caligan Partners LP, By: /s/ David Johnson, Partner 2026-05-20 /s/ David Edward Johnson 2026-05-20