Filing Manager
PERCEPTIVE ADVISORS LLC
Reporting Manager
Perceptive Advisors LLC
Symbol
ATXS
Shares outstanding
56,394,957 shares
Disclosed Ownership
6,485,420 shares
Ownership
12%
Form type
SCHEDULE 13D/A
Filing time
16 Oct 2025, 20:52:53 UTC
Date of event
14 Oct 2025
Next filing
09 Feb 2026

Reporting Managers (4)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Perceptive Advisors LLC 12% 6,485,420 0 6,485,420 /s/ Joseph Edelman Joseph Edelman, Managing Member 0001224962
Joseph Edelman 12% 6,485,420 0 6,485,420 /s/ Joseph Edelman Joseph Edelman 0001164426
Perceptive Life Sciences Master Fund, Ltd. 8.6% 4,873,721 0 4,873,721 /s/ Joseph Edelman By: Perceptive Advisors LLC, By: Joseph Edelman, Managing Member 0001249675
Perceptive Xontogeny Venture Fund, L.P. 2.9% 1,611,699 0 1,611,699 /s/ Joseph Edelman By: Perceptive Xontogeny Ventures GP, LLC; By: Joseph Edelman, Managing Member 0001757940