Filing Manager
M.D. Arie Belldegrun
Reporting Manager
Arie Belldegrun, M.D.
Symbol
ALLO
Shares outstanding
228,416,724 shares
Disclosed Ownership
13,248,170 shares
Ownership
5.8%
Form type
SCHEDULE 13G/A
Filing time
17 Feb 2026, 17:34:06 UTC
Date of event
31 Dec 2025
Previous filing
13 Nov 2025

Reporting Managers (6)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Arie Belldegrun, M.D. 5.8% 13,248,170 4,475,883 8,772,287 /s/ Arie Belldegrun Arie Belldegrun, M.D.
Bellco Legacy LLC 0.2% 539,867 0 539,867 /s/ Arie Belldegrun By Arie Belldegrun, M.D., Manager
Bellco Legacy IV LLC 2.1% 4,710,120 0 4,710,120 /s/ Arie Belldegrun By Arie Belldegrun, M.D., Manager
Vida Ventures LLC 0.8% 1,798,163 0 1,798,163 /s/ Arie Belldegrun By VV Manager LLC, its Manager, By Arie Belldegrun, M.D., Senior Managing Director
Vida Ventures III, L.P. 0.8% 1,720,172 0 1,720,172 /s/ Arie Belldegrun By Vida Ventures GP III, LLC, its Manager, By Arie Belldegrun, M.D., Senior Managing Director
Vida Ventures III-A, L.P. 0% 3,965 0 3,965 /s/ Arie Belldegrun By Vida Ventures GP III, LLC, its Manager, By Arie Belldegrun, M.D., Senior Managing Director,