Reporting Manager
American Century Investment Management, Inc.
Symbol
ATRO
Shares outstanding
31,504,196 shares
Disclosed Ownership
1,764,235 shares
Ownership
5.6%
Form type
SCHEDULE 13G
Filing time
13 Feb 2026, 10:07:11 UTC
Date of event
31 Dec 2025

Reporting Managers (3)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
American Century Investment Management, Inc. 5.6% 1,764,235 1,453,455 0 American Century Investment Management, Inc. /s/ John Pak / Senior Vice President
American Century Companies, Inc. 5.6% 1,764,235 1,453,455 0 American Century Companies, Inc. /s/ John Pak / Senior Vice President
Stowers Institute for Medical Research 5.6% 1,764,235 1,453,455 0 Stowers Institute for Medical Research /s/ Joselyn Verschelden / Authorized Signer