Filing Manager
BRIAN G. ATWOOD
Reporting Manager
Brian G. Atwood
Symbol
CERO
Shares outstanding
5,169,697 shares
Disclosed Ownership
511,800 shares
Ownership
9.9%
Form type
SCHEDULE 13D/A
Filing time
04 Apr 2025, 19:17:06 UTC
Date of event
31 Mar 2025
Previous filing
07 Feb 2025

Reporting Managers (3)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Atwood-Edminster Trust dtd 4-2-2000 9.5% 490,534 0 490,534 /s/ Brian G. Atwood Brian G. Atwood/Trustee
Brian G. Atwood 9.9% 511,800 20,016 490,534 /s/ Brian G. Atwood Brian G. Atwood 0001266567
Lynne H. Edminster 9.5% 490,534 0 490,534 /s/ Brian G. Atwood, as attorney-in-fact for Lynne H. Edminster Brian G. Atwood