ARK Investment Management LLC - Sep 30, 2025 SCHEDULE 13G/A Report for 908 Devices Inc. Common Stock (MASS)

Filing Manager
ARK Investment Management LLC
Reporting Manager
ARK Investment Management LLC
Security
908 Devices Inc. Common Stock
Symbol
MASS
Shares outstanding
36.1M shares
Disclosed Ownership
1.95M shares
Ownership
5.41%
Form type
SCHEDULE 13G/A
Date filed
11/4/2025, 04:46 PM
Date of event
Sep 30, 2025
Previous filing
Feb 14, 2025
SEC
View on sec.gov

Reporting Managers (2)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
ARK Investment Management LLC 5.41% 1.95M 1.95M 0 /s/ Kellen Carter Kellen Carter, Chief Compliance Officer
Catherine D. Wood 5.41% 1.95M 0 1.95M /s/ Catherine D. Wood Catherine D. Wood, Chief Executive Officer, Chief Investment Officer