JANE STREET GROUP, LLC - 31 Dec 2025 SCHEDULE 13G/A Report for ALT5 Sigma Corp Common Stock, $0.001 par value per share (ALTS)

Filing Manager
JANE STREET GROUP, LLC
Reporting Manager
JANE STREET GROUP, LLC
Security
ALT5 Sigma Corp Common Stock, $0.001 par value per share
Symbol
ALTS
Shares outstanding
108,989,179 shares
Disclosed Ownership
3,051,697 shares
Ownership
2.8%
Form type
SCHEDULE 13G/A
Filing time
02 Feb 2026, 16:14:59 UTC
Date of event
31 Dec 2025
Previous filing
13 Nov 2025
SEC
View on sec.gov

Reporting Managers (4)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
JANE STREET GROUP, LLC 2.8% 3,051,697 0 3,051,697 /s/ Jeremy Kahn Jeremy Kahn (Authorized Signatory)
Jane Street Capital, LLC 0.8% 880,187 0 880,187 /s/ Jeremy Kahn Jeremy Kahn (Authorized Signatory)
Jane Street Options, LLC 0.7% 710,296 0 710,296 /s/ Jeremy Kahn Jeremy Kahn (Authorized Signatory)
Jane Street Global Trading, LLC 1.3% 1,461,214 0 1,461,214 /s/ Jeremy Kahn Jeremy Kahn (Authorized Signatory)