Reporting Manager
American Century Investment Management, Inc.
Symbol
KOS
Shares outstanding
477M shares
Disclosed Ownership
33.4M shares
Ownership
7%
Form type
SCHEDULE 13G/A
Date filed
8/14/2025, 09:07 AM
Date of event
Jun 30, 2025

Reporting Managers (3)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
American Century Investment Management, Inc. 7% 33.4M 30.5M 0 American Century Investment Management, Inc. /s/ John Pak / Senior Vice President
American Century Companies, Inc. 7% 33.4M 30.5M 0 American Century Companies, Inc. /s/ John Pak / Senior Vice President
Stowers Institute for Medical Research 7% 33.4M 30.5M 0 Stowers Institute for Medical Research /s/ Joselyn Verschelden / Authorized Signer