STOCK TITAN

Caligan Partners (LQDA) shifts 5,300 Liquidia shares in internal fund trade

Filing Impact
(Very High)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Liquidia Corp insider Caligan Partners and David Johnson reported internal fund transactions in the company’s common stock. On May 19, 2026, Caligan-managed entities recorded both an open-market purchase and an open-market sale of 5,300 shares each at $59.98 per share.

A footnote explains this represents a transaction between Caligan Funds, indicating a reallocation among affiliated investment vehicles rather than a directional change in overall exposure. After these trades, Caligan-related entities held 8,133,651 Liquidia shares indirectly, while David Johnson also held 18,396 shares directly.

Positive

  • None.

Negative

  • None.
Insider Caligan Partners LP, JOHNSON DAVID EDWARD
Role null | null
Bought 5,300 shs ($318K)
Sold 5,300 shs ($318K)
Type Security Shares Price Value
Sale Common Stock, $0.001 par value per share ("Common Stock") 5,300 $59.98 $318K
Purchase Common Stock 5,300 $59.98 $318K
holding Common Stock -- -- --
Holdings After Transaction: Common Stock, $0.001 par value per share ("Common Stock") — 8,133,651 shares (Indirect, See footnote); Common Stock — 8,138,951 shares (Indirect, See footnote); Common Stock — 18,396 shares (Direct, null)
Footnotes (1)
  1. 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.
Open-market purchase 5,300 shares at $59.98 Common Stock bought on May 19, 2026 by Caligan-managed entities
Open-market sale 5,300 shares at $59.98 Common Stock sold on May 19, 2026 by Caligan-managed entities
Indirect holdings after transactions 8,133,651 shares Liquidia common stock held indirectly by Caligan-related entities after trades
Direct holdings after transactions 18,396 shares Liquidia common stock held directly by David Johnson after reporting date
Net buy/sell shares 0 shares Transaction summary net buy/sell direction neutral for May 19, 2026
open-market purchase financial
"Represents an open-market purchase of 5,300 shares at $59.98 per share"
An open-market purchase is when an investor or a company buys shares on a public stock exchange at the going market price, rather than through a private deal. It matters to investors because these purchases change how many shares are available, can push the stock price up or signal confidence from large buyers, and often affect per-share metrics like earnings—think of it like someone buying lots of apples off a grocery shelf, reducing supply and potentially raising the price.
open-market sale financial
"Represents an open-market sale of 5,300 shares at $59.98 per share"
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.
indirect ownership financial
"Caligan Funds and Accounts reflect primarily indirect ownership of Liquidia shares"
Caligan Funds and Accounts financial
"Securities held by certain funds and managed accounts, the Caligan Funds and Accounts"
SEC Form 4
FORM 4UNITED 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
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Caligan Partners LP

(Last)(First)(Middle)
780 THIRD AVENUE
30TH FLOOR

(Street)
NEW YORK NEW YORK 10017

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Liquidia Corp [ LQDA ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirectorX10% Owner
Officer (give title below)XOther (specify below)
See Remarks
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/19/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
Form filed by One Reporting Person
XForm filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)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)
CodeVAmount(A) or (D)Price
Common Stock, $0.001 par value per share ("Common Stock")05/19/2026S(2)5,300D$59.988,133,651ISee footnote(1)
Common Stock05/19/2026P(2)5,300A$59.988,138,951ISee footnote(1)
Common Stock18,396D(3)
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 (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)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 (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (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: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
1. Name and Address of Reporting Person*
Caligan Partners LP

(Last)(First)(Middle)
780 THIRD AVENUE
30TH FLOOR

(Street)
NEW YORK NEW YORK 10017

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
XDirectorX10% Owner
Officer (give title below)XOther (specify below)
See Remarks
1. Name and Address of Reporting Person*
JOHNSON DAVID EDWARD

(Last)(First)(Middle)
780 THIRD AVENUE
30TH FLOOR

(Street)
NEW YORK NEW YORK 10017

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
XDirectorX10% Owner
Officer (give title below)Other (specify below)
Explanation of Responses:
1. 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.
2. Represents a transaction between the Caligan Funds.
3. 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, Partner05/20/2026
/s/ David Edward Johnson05/20/2026
** Signature of Reporting PersonDate
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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transactions did Caligan Partners report for Liquidia (LQDA)?

Caligan-related entities reported both buying and selling 5,300 shares of Liquidia common stock at $59.98 per share on May 19, 2026. A footnote states the activity represents a transaction between Caligan Funds, suggesting an internal reallocation rather than a change in overall exposure.

How many Liquidia (LQDA) shares were involved in the Caligan Funds’ internal trade?

The internal trade involved 5,300 Liquidia common shares purchased and 5,300 shares sold at $59.98 per share. These matching trades occurred on May 19, 2026 and were described as a transaction between Caligan Funds in the filing’s footnotes.

Was there a net change in Caligan’s Liquidia (LQDA) position from these insider transactions?

The filing shows equal buy and sell volumes of 5,300 shares at $59.98 per share, and the transaction summary lists net buy/sell shares as zero. A footnote describing a transaction between Caligan Funds indicates the activity was an internal reallocation, not a net directional change.

Who is David Johnson in relation to Caligan Partners and Liquidia (LQDA)?

David Johnson is identified as the Managing Partner of Caligan and a Managing Member of Caligan Partners GP LLC. He is deemed to hold the reported Liquidia securities for the benefit of Caligan Funds and Accounts and may transfer them to those vehicles after vesting, if applicable.

How is ownership of Liquidia (LQDA) shares structured for the Caligan Funds and Accounts?

The filing states Liquidia securities are held by certain Caligan Funds and managed accounts for which Caligan serves as investment manager. David Johnson is deemed to hold the reported securities for the benefit of these funds and accounts, reflecting primarily indirect investment-fund ownership.