Key facts
- This page summarizes SR ONE CAPITAL MANAGEMENT, LLC's Form 4 filing for Avalyn Pharma Inc. (AVLN).
- 10 reported transactions and 8 derivative rows are listed below.
- Accepted by SEC: 01 May 2026, 18:46.
SR ONE CAPITAL MANAGEMENT, LLC - 01 May 2026 Form 4 Insider Report for Avalyn Pharma Inc. (AVLN)
- Reporting relationship
- 10%+ Owner
- Issuer ticker
- AVLN
- Reported as of
- 01 May 2026
- Net transaction value
- $0
- SEC form
- 4
- Accepted by SEC
- 01 May 2026, 18:46:03 UTC
- Prior SEC filing
- 29 Apr 2026
- Next SEC filing
- 07 May 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Sasha Keough, attorney-in-fact for SR One Capital Management, LLC
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Key filing fact
SR ONE CAPITAL MANAGEMENT, LLC filed Form 4 for Avalyn Pharma Inc. (AVLN) on 01 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 (2)
CIK 0001853723
Primary reporting owner
SR ONE CAPITAL MANAGEMENT, LLC
- Relationship
- 10%+ Owner
- Address
- 929 MAIN STREET, SUITE 200, REDWOOD CITY
- Signature
- /s/ Sasha Keough, attorney-in-fact for SR One Capital Management, LLC
- Signature date
- 01 May 2026
CIK 0001595117
George Simeon
- Relationship
- 10%+ Owner
- Address
- 929 MAIN STREET, SUITE 200, REDWOOD CITY
- Signature
- /s/ Sasha Keough, attorney-in-fact for Simeon George
- Signature date
- 01 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
- +1,419,298
- Change %
- Price
- Shares after
- 1,419,298
- Date
- 01 May 2026
- Ownership
- See Note 2
- Footnotes
- F1, F2
AVLN
transaction
Common Stock
Conversion of derivative security
- Transaction value
- Shares
- +1,419,298
- Change %
- Price
- Shares after
- 1,419,298
- Date
- 01 May 2026
- Ownership
- See Note 2
- Footnotes
- F1, F2
AVLN
transaction
Common Stock
Conversion of derivative security
- Transaction value
- Shares
- +489,486
- Change %
- +34%
- Price
- Shares after
- 1,908,784
- Date
- 01 May 2026
- Ownership
- See Note 2
- Footnotes
- F2, F3
AVLN
transaction
Common Stock
Conversion of derivative security
- Transaction value
- Shares
- +489,486
- Change %
- +34%
- Price
- Shares after
- 1,908,784
- Date
- 01 May 2026
- Ownership
- See Note 2
- Footnotes
- F2, F3
AVLN
transaction
Common Stock
Purchase
- Transaction value
- Shares
- +277,778
- Change %
- +15%
- Price
- $18.00*
- Shares after
- 2,186,562
- Date
- 01 May 2026
- Ownership
- See Note 2
- Footnotes
- F2
AVLN
transaction
Common Stock
Purchase
- Transaction value
- Shares
- +277,778
- Change %
- +15%
- Price
- $18.00*
- Shares after
- 2,186,562
- Date
- 01 May 2026
- Ownership
- See Note 2
- Footnotes
- F2
AVLN
transaction
Common Stock
Conversion of derivative security
- Transaction value
- Shares
- +354,824
- Change %
- Price
- Shares after
- 354,824
- Date
- 01 May 2026
- Ownership
- See Note 4
- Footnotes
- F1, F4
AVLN
transaction
Common Stock
Conversion of derivative security
- Transaction value
- Shares
- +354,824
- Change %
- Price
- Shares after
- 354,824
- Date
- 01 May 2026
- Ownership
- See Note 4
- Footnotes
- F1, F4
AVLN
transaction
Common Stock
Conversion of derivative security
- Transaction value
- Shares
- +489,486
- Change %
- +138%
- Price
- Shares after
- 844,310
- Date
- 01 May 2026
- Ownership
- See Note 4
- Footnotes
- F3, F4
AVLN
transaction
Common Stock
Conversion of derivative security
- Transaction value
- Shares
- +489,486
- Change %
- +138%
- Price
- Shares after
- 844,310
- Date
- 01 May 2026
- Ownership
- See Note 4
- Footnotes
- F3, F4
AVLN
transaction
Common Stock
Purchase
- Transaction value
- Shares
- +277,777
- Change %
- +33%
- Price
- $18.00*
- Shares after
- 1,122,087
- Date
- 01 May 2026
- Ownership
- See Note 4
- Footnotes
- F4
AVLN
transaction
Common Stock
Purchase
- Transaction value
- Shares
- +277,777
- Change %
- +33%
- Price
- $18.00*
- Shares after
- 1,122,087
- Date
- 01 May 2026
- Ownership
- See Note 4
- Footnotes
- F4
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
AVLN
transaction
Derivative
Series C-1 Convertible Preferred Stock
Conversion of derivative security
- Transaction value
- Shares
- -27,309,719
- Change %
- -100%
- Price
- Shares after
- 0
- Date
- 01 May 2026
- Ownership
- See Note 2
- Underlying class
- Common Stock
- Underlying amount
- 1,419,298
- Exercise price
- Footnotes
- F1, F2
AVLN
transaction
Derivative
Series C-1 Convertible Preferred Stock
Conversion of derivative security
- Transaction value
- Shares
- -27,309,719
- Change %
- -100%
- Price
- Shares after
- 0
- Date
- 01 May 2026
- Ownership
- See Note 2
- Underlying class
- Common Stock
- Underlying amount
- 1,419,298
- Exercise price
- Footnotes
- F1, F2
AVLN
transaction
Derivative
Series D Convertible Preferred Stock
Conversion of derivative security
- Transaction value
- Shares
- -9,418,561
- Change %
- -100%
- Price
- Shares after
- 0
- Date
- 01 May 2026
- Ownership
- See Note 2
- Underlying class
- Common Stock
- Underlying amount
- 489,486
- Exercise price
- Footnotes
- F2, F3
AVLN
transaction
Derivative
Series D Convertible Preferred Stock
Conversion of derivative security
- Transaction value
- Shares
- -9,418,561
- Change %
- -100%
- Price
- Shares after
- 0
- Date
- 01 May 2026
- Ownership
- See Note 2
- Underlying class
- Common Stock
- Underlying amount
- 489,486
- Exercise price
- Footnotes
- F2, F3
AVLN
transaction
Derivative
Series C-1 Convertible Preferred Stock
Conversion of derivative security
- Transaction value
- Shares
- -6,827,429
- Change %
- -100%
- Price
- Shares after
- 0
- Date
- 01 May 2026
- Ownership
- See Note 4
- Underlying class
- Common Stock
- Underlying amount
- 354,824
- Exercise price
- Footnotes
- F1, F4
AVLN
transaction
Derivative
Series C-1 Convertible Preferred Stock
Conversion of derivative security
- Transaction value
- Shares
- -6,827,429
- Change %
- -100%
- Price
- Shares after
- 0
- Date
- 01 May 2026
- Ownership
- See Note 4
- Underlying class
- Common Stock
- Underlying amount
- 354,824
- Exercise price
- Footnotes
- F1, F4
AVLN
transaction
Derivative
Series D Convertible Preferred Stock
Conversion of derivative security
- Transaction value
- Shares
- -9,418,560
- Change %
- -100%
- Price
- Shares after
- 0
- Date
- 01 May 2026
- Ownership
- See Note 4
- Underlying class
- Common Stock
- Underlying amount
- 489,486
- Exercise price
- Footnotes
- F3, F4
AVLN
transaction
Derivative
Series D Convertible Preferred Stock
Conversion of derivative security
- Transaction value
- Shares
- -9,418,560
- Change %
- -100%
- Price
- Shares after
- 0
- Date
- 01 May 2026
- Ownership
- See Note 4
- Underlying class
- Common Stock
- Underlying amount
- 489,486
- Exercise price
- Footnotes
- F3, F4
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Section 16 status
SR ONE CAPITAL MANAGEMENT, LLC is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may still apply in specific circumstances.
Explanation of responses 4 footnotes
Footnote F1
On May 1, 2026, each share of Series C-1 Convertible Preferred Stock (the "Series C-1 Preferred Stock") automatically converted into shares of Common Stock on a one-for-19.2417 basis without payment of further consideration immediately prior to the closing of the Issuer's initial public offering. The Series C-1 Preferred Stock had no expiration date.
Footnote F2
The reported securities are held directly by SR One Capital Fund II Aggregator, LP ("SR One Fund II Aggregator"). SR One Capital Partners II, LP ("SR One Partners II") is the general partner of SR One Fund II, and SR One Capital Management, LLC ("SR One Capital Management") is the general partner of SR One Partners II. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Partners II, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.
Footnote F3
On May 1, 2026, each share of Series D Convertible Preferred Stock (the "Series D Preferred Stock") automatically converted into shares of Common Stock on a one-for-19.2417 basis without payment of further consideration immediately prior to the closing of the Issuer's initial public offering. The Series D Preferred Stock had no expiration date.
Footnote F4
The reported securities are held directly by AMZL, LP ("AMZL"). SR One Capital SMA Partners, LP ("SR One SMA Partners") is the general partner of AMZL, and SR One Capital Management is the general partner of SR One SMA Partners. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One SMA Partners, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.