Quick Takeaways
- ARK Investment Management LLC filed SCHEDULE 13G/A for 908 Devices Inc. Common Stock (MASS).
- Disclosed ownership: 5.4%.
- Date of event: 30 Sep 2025.
ARK Investment Management LLC - 30 Sep 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
- 36,114,085 shares
- Disclosed Ownership
- 1,953,772 shares
- Ownership
- 5.4%
- Form type
- SCHEDULE 13G/A
- Filing time
- 04 Nov 2025, 16:46:13 UTC
- Date of event
- 30 Sep 2025
- Previous filing
- 14 Feb 2025
- SEC
- View on sec.gov
Quoteable Key Fact
"ARK Investment Management LLC disclosed 5.4% ownership in 908 Devices Inc. Common Stock (MASS) on 30 Sep 2025."
What Changed
- Previous schedule filing date: 14 Feb 2025.
- Current filing was accepted on 04 Nov 2025, 16:46.
Why This Matters
- This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
- You can verify ownership claims directly against the original SEC filing.
Source Evidence
Backed by Schedule 13D/13G
See Original Filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting Managers (2)
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| ARK Investment Management LLC | 5.4% | 1,953,772 | 1,953,772 | 0 | /s/ Kellen Carter | Kellen Carter, Chief Compliance Officer | |
| Catherine D. Wood | 5.4% | 1,953,772 | 0 | 1,953,772 | /s/ Catherine D. Wood | Catherine D. Wood, Chief Executive Officer, Chief Investment Officer |