Sec Form 4 Filing - Caligan Partners LP @ Liquidia Corp - 2023-12-14

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Caligan Partners LP 2. Issuer Name and Ticker or Trading Symbol Liquidia Corp [ LQDA] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director X __ 10% Owner _____ Officer (give title below) X __ Other (specify below) See Remarks (Last) (First) (Middle) 515 MADISON AVENUE, 8TH FLOOR 3. Date of Earliest Transaction (MM/DD/YY) 12/14/2023 (Street) NEW YORK, NY10022 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock, $0.001 par value per share ("Common Stock") 12/14/2023 P 1,117,318 A $ 7.16 11,280,945 ( 1 ) I See footnote ( 2 )

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Caligan Partners LP 515 MADISON AVENUE 8TH FLOOR NEW YORK, NY10022 X X See Remarks JOHNSON DAVID EDWARD 515 MADISON AVENUE 8TH FLOOR NEW YORK, NY10022 X X Signatures Caligan Partners LP, By: /s/ David Johnson, Managing Partner 12/14/2023 Signature of Reporting Person Date /s/ David Edward Johnson 12/14/2023 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Since the filing of the Form 4 filed by the Reporting Persons on September 7, 2022, and more than 6 months ago, the managed account to which Caligan (as defined below) serves as a consultant has reduced its holding by 480,000 shares of Common Stock, and accordingly, such shares of Common Stock are no longer included in the total amount of securities beneficially owned that are reported in Column 5. ( 2 )This Form 4 is filed by David Johnson ("Mr. Johnson") and Caligan Partners LP ("Caligan" and together with Mr. Johnson, the "Reporting Persons") with respect to the securities held by (i) Caligan Partners Master Fund LP, a Cayman Islands limited partnership, (ii) an affiliated fund to which Caligan serves as investment manager, (iii) managed accounts to which Caligan serves as investment manager, and (iv) a managed account to which Caligan serves as a consultant. Mr. Johnson is the Managing Partner of Caligan and a Managing Member of Caligan Partners GP LLC, the general partner of Caligan.

Remarks: The Reporting Persons disclaim beneficial ownership in the securities reported on this Form 4 except to the extent of its or his pecuniary interest, if any, therein, and this report shall not be deemed to be an admission that such Reporting Persons are the beneficial owners of such securities for purposes of Section 16 or for any other purpose. Caligan may be deemed to be a director by deputization of Liquidia Corporation (the "Issuer") by virtue of the fact that Mr. Johnson currently serves on the Issuer's board of directors.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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