# EDGAR Filing Document

**Accession Number:** 0001540171
**File Stem:** 0001193125-26-192838
**Filing Date:** 2026-4
**Character Count:** 10326
**Document Hash:** caf0a8324d6146215927ba6e422df1be
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-192838.hdr.sgml**: 20260429

**ACCESSION NUMBER**: 0001193125-26-192838

**CONFORMED SUBMISSION TYPE**: 3

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20260429

**FILED AS OF DATE**: 20260429

**DATE AS OF CHANGE**: 20260429

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Carroll Jill
- **CENTRAL INDEX KEY:** 0001598542

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-43251
- **FILM NUMBER:** 26919010

**MAIL ADDRESS:**
- **STREET 1:** C/O SR ONE CAPITAL MANAGEMENT, LP
- **STREET 2:** 929 MAIN STREET, SUITE 200
- **CITY:** REDWOOD CITY
- **STATE:** CA
- **ZIP:** 94063
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Avalyn Pharma Inc.
- **CENTRAL INDEX KEY:** 0001540171
- **STANDARD INDUSTRIAL CLASSIFICATION:** PHARMACEUTICAL PREPARATIONS [2834]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 452463191
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 105 W FIRST ST.
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02127
- **BUSINESS PHONE:** (206) 707-0340

**MAIL ADDRESS:**
- **STREET 1:** 105 W FIRST ST.
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02127

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Genoa Pharmaceuticals, Inc.
- **DATE OF NAME CHANGE:** 20120120

## Ex-24.Poa

**<u>LIMITED POWER OF ATTORNEY</u>**

Know all by these presents, that the undersigned hereby makes, constitutes and appoints Sasha Keough, Karen Narolewski-Engel, and James Macadam, and each of them singly, as the undersigned's true and lawful attorneys-in-fact with full power and authority as hereinafter described to:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.execute for and on behalf of the undersigned, (i) Forms 3, 4, and 5 (including amendments thereto) in accordance with Section 16(a) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and the rules thereunder, (ii) Form 144 in accordance with Rule 144 under the Securities Act of 1933, as amended (the "Securities Act"), and (iii) Schedules 13D and 13G (including amendments thereto) in accordance with Sections 13(d) and 13(g) of the Exchange Act and the rules thereunder;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.do and perform any and all acts for and on behalf of the undersigned which may be necessary or desirable to complete and execute any such Form 3, 4, or 5 (including amendments thereto), Form 144, or Schedule 13D or 13G (including amendments thereto) and timely file such form with the United States Securities and Exchange Commission (the "SEC") and any stock exchange or similar authority, including, but not limited to, executing a Form ID or Update Passphrase request for and on behalf of the undersigned and filing such applications with the SEC; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.take any other action of any type whatsoever in connection with the foregoing which, in the opinion of such attorney-in-fact, may be of benefit to, in the best interest of, or legally required by, the undersigned, it being understood that the documents executed by such attorney-in-fact on behalf of the undersigned pursuant to this Limited Power of Attorney shall be in such form and shall contain such terms and conditions as such attorney-in-fact may approve in such attorney-in-fact's discretion.

The undersigned hereby grants to each attorney-in-fact full power and authority to do and perform any and every act and thing whatsoever requisite, necessary, or proper to be done in the exercise of any of the rights and powers herein granted, as fully to all intents and purposes as the undersigned might or could do if personally present, with full power of substitution or revocation, hereby ratifying and confirming all the acts such attorney-in-fact, or such attorney-in-fact's substitute or substitutes, shall lawfully do or cause to be done by virtue of this Limited Power of Attorney and the rights and powers herein granted. The undersigned acknowledges that each of the foregoing attorneys-in-fact, in serving in such capacity at the request of the undersigned, is not assuming any of the undersigned's responsibilities to comply with Sections 13 or 16 of the Exchange Act or Rule 144 under the Securities Act.

This Limited Power of Attorney shall remain in full force and effect until the undersigned is no longer required to file Forms 3, 4, and 5 (including amendments thereto), Form 144, and Schedules 13D and 13G (including amendments thereto) with respect to the undersigned's holdings of and transactions in securities, unless earlier revoked by the undersigned in a signed writing delivered to each of the foregoing attorneys-in-fact. In addition, at such time as any attorney-in-fact resigns as attorney-in-fact by the execution of a written resignation delivered to the undersigned, without any action on the part of the undersigned, this Limited Power of Attorney shall be partially revoked solely with respect to such individual; such individual shall cease to be an attorney-in-fact under this Limited Power of Attorney; and the authority of the other attorneys-in-fact then existing hereunder shall remain in full force and effect.

*[Signature page follows]*

------

IN WITNESS WHEREOF, the undersigned has caused this Limited Power of Attorney to be executed as of this 3<sup>rd</sup> day of December, 2022.

<u>/s/Jill Carroll</u> 

Jill Carroll

------

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

## FORM 3

### INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Carroll Jill<br><sub>(Last) (First) (Middle)</sub><br>929 MAIN STREET<br>SUITE 200<br><sub>(Street)</sub><br>REDWOOD CITY, CA 94063<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>Avalyn Pharma Inc. [ AVLN ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2026-04-29 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director   [ ] 10% Owner<br>[ ] Officer (give title below)   [ ] Other (specify below)<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 Beneficially Owned

---

|  |  |  |  |
| --- | --- | --- | --- |
| 1. Title of Security | 2. Amount of Securities Beneficially Owned | 3. Ownership Form | 4. Nature of Indirect Beneficial Ownership |

---

## Table II - Derivative Securities Beneficially Owned

---

|  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 3. Title and Amount of Underlying Securities | 3. Title and Amount of Underlying Securities | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| Series C-1 Convertible Preferred Stock | <sup>(1)</sup> | <sup>(1)</sup> | Common Stock | 1419298 | <sup>(1)</sup> | I | See Note 2<sup>(2)</sup> |
| Series D Convertible Preferred Stock | <sup>(3)</sup> | <sup>(3)</sup> | Common Stock | 489486 | <sup>(3)</sup> | I | See Note 2<sup>(2)</sup> |

---

### Footnotes:

(1) Each share of Series C-1 Convertible Preferred Stock (the "Series C-1 Preferred Stock") is convertible into Common Stock on a one-for-19.2417 basis at any time at the option of the holder, and will automatically convert into the number of shares shown in Column 3 immediately prior to the closing of the Issuer's initial public offering. The Series C-1 Preferred Stock has no expiration date.

(2) The securities are directly held by SR One Capital Fund II Aggregator, LP ("SR One Fund II Aggregator"). SR One Capital Partners II, LP ("SR One Partners II") serves as the general partner of SR One Fund II Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") serves as the general partner of SR One Partners II. The Reporting Person is a partner of SR One Capital Management, LP, an entity affiliated with SR One Fund II Aggregator, and a limited partner of SR One Partners II. The Reporting Person disclaims beneficial ownership of these securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended ("Section 16"), except to the extent of her pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose.

(3) Each share of Series D Convertible Preferred Stock (the "Series D Preferred Stock") is convertible into Common Stock on a one-for-19.2417 basis at any time at the option of the holder, and will automatically convert into the number of shares shown in Column 3 immediately prior to the closing of the Issuer's initial public offering. The Series D Preferred Stock has no expiration date.

**Signature:** /s/ Sasha Keough, attorney-in-fact for Jill Carroll  
**Date:** 2026-04-29

### 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.**