Reporting Manager
American Century Investment Management, Inc.
Symbol
MSM
Shares outstanding
56,002,771 shares
Disclosed Ownership
2,688,133 shares
Ownership
4.8%
Form type
SCHEDULE 13G/A
Filing time
14 Nov 2025, 09:50:15 UTC
Date of event
30 Sep 2025
Next filing
13 Feb 2026

Reporting Managers (3)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
American Century Investment Management, Inc. 4.8% 2,688,133 2,586,182 0 American Century Investment Management, Inc. /s/ John Pak / Senior Vice President
American Century Companies, Inc. 4.8% 2,688,133 2,586,182 0 American Century Companies, Inc. /s/ John Pak / Senior Vice President
Stowers Institute for Medical Research 4.8% 2,688,133 2,586,182 0 Stowers Institute for Medical Research /s/ Joselyn Verschelden / Authorized Signer