# EDGAR Filing Document

**Accession Number:** 0001819576
**File Stem:** 0001104659-26-026413
**Filing Date:** 2026-3
**Character Count:** 7995
**Document Hash:** 1f03df17fbf893c704ca732f7003f173
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-26-026413.hdr.sgml**: 20260311

**ACCESSION NUMBER**: 0001104659-26-026413

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260309

**FILED AS OF DATE**: 20260311

**DATE AS OF CHANGE**: 20260311

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Moomaw Scott
- **CENTRAL INDEX KEY:** 0001832592

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-39724
- **FILM NUMBER:** 26743846

**MAIL ADDRESS:**
- **STREET 1:** C/O LIQUIDIA CORPORATION
- **STREET 2:** 419 DAVIS DRIVE, SUITE 100
- **CITY:** MORRISVILLE
- **STATE:** NC
- **ZIP:** 27560
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Liquidia Corp
- **CENTRAL INDEX KEY:** 0001819576
- **STANDARD INDUSTRIAL CLASSIFICATION:** PHARMACEUTICAL PREPARATIONS [2834]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 851710962
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 419 DAVIS DRIVE, SUITE 100
- **CITY:** MORRISVILLE
- **STATE:** NC
- **ZIP:** 27560
- **BUSINESS PHONE:** 919.328.4400

**MAIL ADDRESS:**
- **STREET 1:** 419 DAVIS DRIVE, SUITE 100
- **CITY:** MORRISVILLE
- **STATE:** NC
- **ZIP:** 27560

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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

[x] 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**<sup>*</sup><br>Moomaw Scott<br><sub>(Last) (First) (Middle)</sub><br>419 DAVIS DRIVE, SUITE 100<br><sub>(Street)</sub><br>MORRISVILLE, NC 27560<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-03-09 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [ ] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_Chief Commercial Officer_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Liquidia Corp [ LQDA ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock | 2026-03-09 |  | M |  | 10000 | A | $2.54 | 198954<sup>(1)</sup> | D |  |
| Common Stock | 2026-03-09 |  | M |  | 15300 | A | $2.97 | 214254<sup>(1)</sup> | D |  |
| Common Stock | 2026-03-09 |  | M |  | 54700 | A | $3.40 | 268954<sup>(1)</sup> | D |  |
| Common Stock | 2026-03-09 |  | S<sup>(2)</sup> |  | 80000 | D | 35.3228<sup>(3)</sup> | 188954<sup>(1)</sup> | D |  |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Incentive Stock Option (right to buy) | $2.54 | 2026-03-09 |  | M |  |  | 10000 | 2025-07-21<sup>(4)</sup> | 2031-07-21 | Common Stock | 10000 | $0 | 0 | D |  |
| Incentive Stock Option (right to buy) | $2.97 | 2026-03-09 |  | M |  |  | 15300 | 2021-01-19<sup>(5)</sup> | 2031-01-19 | Common Stock | 15300 | $0 | 0 | D |  |
| Incentive Stock Option (right to buy) | $3.40 | 2026-03-09 |  | M |  |  | 54700 | 2024-11-19<sup>(6)</sup> | 2030-11-19 | Common Stock | 54700 | $0 | 25300 | D |  |

---

### Footnotes:

(1) Includes (i) 20,833 unvested RSUs of the 83,333 RSUs granted to the Reporting Person on January 11, 2023, (ii) 24,861 unvested RSUs of the 49,723 RSUs granted to the Reporting Person on January 11, 2024, (iii) 52,296 unvested RSUs of the 69,729 RSUs granted to the Reporting Person on January 11, 2025, (iv) 32,955 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) 3,964 shares acquired under the Liquidia Corporation 2020 Employee Stock Purchase Plan.

(2) Represents the subsequent sale of the underlying shares from the exercise of stock options reported on this Form 4. Transaction effected pursuant to a Rule 10b5-1 plan adopted by the Reporting Person on November 7, 2025.

(3) Price is the volume weighted average price of all transactions made by the Reporting Person on the transaction date for prices ranging from $35.01 to $35.75. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

(4) The option vested with 50% vesting on November 5, 2021, 25% vesting on July 21, 2022 and the remaining options vesting ratably on a monthly basis over three years thereafter and became fully vested on July 21, 2025.

(5) The option vested ratably on a monthly basis over four years and became fully vested on January 19, 2025.

(6) The option vested with 25% vesting on November 19, 2021 and the remaining options vesting ratably on a monthly basis over three years thereafter and became fully vested on November 19, 2024.

**Signature:** /s/ Scott Moomaw  
**Date:** 2026-03-11

### Remarks:

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.**