PERCEPTIVE ADVISORS LLC - 16 Jan 2026 SCHEDULE 13D/A Report for LeonaBio, Inc. Common Stock, $0.0001 par value (ATHA)

Filing Manager
PERCEPTIVE ADVISORS LLC
Reporting Manager
Perceptive Advisors LLC
Security
LeonaBio, Inc. Common Stock, $0.0001 par value
Symbol
ATHA
Shares outstanding
9,301,261 shares
Disclosed Ownership
1,859,322 shares
Ownership
20%
Form type
SCHEDULE 13D/A
Filing time
16 Jan 2026, 16:46:57 UTC
Date of event
16 Jan 2026
Previous filing
23 Dec 2025
SEC
View on sec.gov

Reporting Managers (4)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Perceptive Advisors LLC 20% 1,859,322 0 1,859,322 /s/ Joseph Edelman Joseph Edelman, Managing Member 0001224962
Joseph Edelman 20% 1,859,322 0 1,859,322 /s/ Joseph Edelman Joseph Edelman 0001164426
Perceptive Life Sciences Master Fund, Ltd. 16% 1,529,566 0 1,529,566 /s/ Joseph Edelman Joseph Edelman, Managing Member 0001249675
Perceptive Xontogeny Venture Fund II, LP 3.5% 329,756 0 329,756 /s/ Joseph Edelman Joseph Edelman, Managing Partner 0001851820