Key facts
- This page summarizes FMR LLC's Form 4 filing for Avalyn Pharma Inc. (AVLN).
- 10 reported transactions and 5 derivative rows are listed below.
- Accepted by SEC: 05 May 2026, 08:37.
FMR LLC - 01 May 2026 Form 4 Insider Report for Avalyn Pharma Inc. (AVLN)
- Reporting relationship
- Other*, 10%+ Owner
- Issuer ticker
- AVLN
- Reported as of
- 01 May 2026
- Net transaction value
- $0
- SEC form
- 4
- Accepted by SEC
- 05 May 2026, 08:37:36 UTC
- Prior SEC filing
- 29 Apr 2026
- Next SEC filing
- 29 Jun 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Richard Bourgelas, Duly authorized under Powers of Attorney, by and on behalf of FMR LLC and its direct and indirect subsidiaries, and Abigail P. Johnson.
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Key filing fact
FMR LLC filed Form 4 for Avalyn Pharma Inc. (AVLN) on 05 May 2026.
Change
- Previous filing in this sequence was filed on 29 Apr 2026.
- Current net transaction value: $0.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0000315066
Primary reporting owner
FMR LLC
- Relationship
- Other*, 10%+ Owner
- Address
- 245 SUMMER STREET, BOSTON
- Signature
- /s/ Richard Bourgelas, Duly authorized under Powers of Attorney, by and on behalf of FMR LLC and its direct and indirect subsidiaries, and Abigail P. Johnson.
- Signature date
- 05 May 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
AVLN
transaction
Common Stock
Conversion of derivative security
- Transaction value
- Shares
- +727,585
- Change %
- Price
- Shares after
- 727,585
- Date
- 01 May 2026
- Ownership
- F-Prime Capital Partners Healthcare Fund V LP
- Footnotes
- F1
AVLN
transaction
Common Stock
Conversion of derivative security
- Transaction value
- Shares
- +80,291
- Change %
- +11%
- Price
- Shares after
- 807,876
- Date
- 01 May 2026
- Ownership
- F-Prime Capital Partners Healthcare Fund V LP
- Footnotes
- F1
AVLN
transaction
Common Stock
Conversion of derivative security
- Transaction value
- Shares
- +872,868
- Change %
- +108%
- Price
- Shares after
- 1,680,744
- Date
- 01 May 2026
- Ownership
- F-Prime Capital Partners Healthcare Fund V LP
- Footnotes
- F1
AVLN
transaction
Common Stock
Conversion of derivative security
- Transaction value
- Shares
- +225,843
- Change %
- +13%
- Price
- Shares after
- 1,906,587
- Date
- 01 May 2026
- Ownership
- F-Prime Capital Partners Healthcare Fund V LP
- Footnotes
- F1
AVLN
transaction
Common Stock
Conversion of derivative security
- Transaction value
- Shares
- +377,948
- Change %
- +20%
- Price
- Shares after
- 2,284,535
- Date
- 01 May 2026
- Ownership
- F-Prime Capital Partners Healthcare Fund V LP
- Footnotes
- F1
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
AVLN
transaction
Derivative
Series A Preferred Stock
Conversion of derivative security
- Transaction value
- Shares
- -727,585
- Change %
- -100%
- Price
- Shares after
- 0
- Date
- 01 May 2026
- Ownership
- F-Prime Capital Partners Healthcare Fund V LP
- Underlying class
- Common Stock
- Underlying amount
- 727,585
- Exercise price
- Footnotes
- F1
AVLN
transaction
Derivative
Series B Preferred Stock
Conversion of derivative security
- Transaction value
- Shares
- -80,291
- Change %
- -100%
- Price
- Shares after
- 0
- Date
- 01 May 2026
- Ownership
- F-Prime Capital Partners Healthcare Fund V LP
- Underlying class
- Common Stock
- Underlying amount
- 80,291
- Exercise price
- Footnotes
- F1
AVLN
transaction
Derivative
Series C-1 Preferred Stock
Conversion of derivative security
- Transaction value
- Shares
- -872,868
- Change %
- -100%
- Price
- Shares after
- 0
- Date
- 01 May 2026
- Ownership
- F-Prime Capital Partners Healthcare Fund V LP
- Underlying class
- Common Stock
- Underlying amount
- 872,868
- Exercise price
- Footnotes
- F1
AVLN
transaction
Derivative
Series C-2 Preferred Stock
Conversion of derivative security
- Transaction value
- Shares
- -225,843
- Change %
- -100%
- Price
- Shares after
- 0
- Date
- 01 May 2026
- Ownership
- F-Prime Capital Partners Healthcare Fund V LP
- Underlying class
- Common Stock
- Underlying amount
- 225,843
- Exercise price
- Footnotes
- F1
AVLN
transaction
Derivative
Series D Preferred Stock
Conversion of derivative security
- Transaction value
- Shares
- -377,948
- Change %
- -100%
- Price
- Shares after
- 0
- Date
- 01 May 2026
- Ownership
- F-Prime Capital Partners Healthcare Fund V LP
- Underlying class
- Common Stock
- Underlying amount
- 377,948
- Exercise price
- Footnotes
- F1
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 1 footnote
Footnote F1
On May 1, 2026, in connection with the completion of the issuer's initial public offering, each share of Series A Preferred Stock, Series B Preferred Stock, Series C-1 Preferred Stock, Series C-2 Preferred Stock, and Series D Preferred Stock converted on a 1-for-1 basis into shares of Common Stock.
SEC remarks
Remark 1: Abigail P. Johnson is a Director, the Chairman and the Chief Executive Officer of FMR LLC. Members of the Johnson family, including Abigail P. Johnson, are the predominant owners, directly or through trusts, of Series B voting common shares of FMR LLC, representing 49% of the voting power of FMR LLC. The Johnson family group and all other Series B shareholders have entered into a shareholders' voting agreement under which all Series B voting common shares will be voted in accordance with the majority vote of Series B voting common shares. Accordingly, through their ownership of voting common shares and the execution of the shareholders' voting agreement, members of the Johnson family may be deemed, under the Investment Company Act of 1940, to form a controlling group with respect to FMR LLC. The address of Abigail P. Johnson is c/o FMR LLC, 245 Summer Street, Boston, MA 02110. Remark 2: The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the undersigned are the beneficial owners of any securities reported herein. Remark 3: The general partner of F-Prime Capital Partners Healthcare Fund V LP is F-Prime Capital Partners Healthcare Advisors Fund V LP (FPCPHA). FPCPHA is solely managed by Impresa Management LLC, the managing member of its general partner and its investment manager.