Quick Takeaways
- AMERICAN CENTURY INVESTMENT MANAGEMENT INC filed SCHEDULE 13G/A for Kosmos Energy Ltd. Common Stock (KOS).
- Disclosed ownership: 2.4%.
- Date of event: 31 Dec 2025.
AMERICAN CENTURY INVESTMENT MANAGEMENT INC - 31 Dec 2025 SCHEDULE 13G/A Report for Kosmos Energy Ltd. Common Stock (KOS)
- Filing Manager
- AMERICAN CENTURY INVESTMENT MANAGEMENT INC
- Reporting Manager
- American Century Investment Management, Inc.
- Security
- Kosmos Energy Ltd. Common Stock
- Symbol
- KOS
- Shares outstanding
- 470,862,958 shares
- Disclosed Ownership
- 11,300,711 shares
- Ownership
- 2.4%
- Form type
- SCHEDULE 13G/A
- Filing time
- 13 Feb 2026, 09:58:41 UTC
- Date of event
- 31 Dec 2025
- Previous filing
- 14 Aug 2025
- SEC
- View on sec.gov
Quoteable Key Fact
"AMERICAN CENTURY INVESTMENT MANAGEMENT INC disclosed 2.4% ownership in Kosmos Energy Ltd. Common Stock (KOS) on 31 Dec 2025."
What Changed
- Previous schedule filing date: 14 Aug 2025.
- Current filing was accepted on 13 Feb 2026, 09:58.
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 (3)
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| American Century Investment Management, Inc. | 2.4% | 11,300,711 | 9,736,137 | 0 | American Century Investment Management, Inc. | /s/ John Pak / Senior Vice President | |
| American Century Companies, Inc. | 2.4% | 11,300,711 | 9,736,137 | 0 | American Century Companies, Inc. | /s/ John Pak / Senior Vice President | |
| Stowers Institute for Medical Research | 2.4% | 11,300,711 | 9,736,137 | 0 | Stowers Institute for Medical Research | /s/ Joselyn Verschelden / Authorized Signer |