Quick Takeaways
- DISCIPLINED GROWTH INVESTORS INC /MN filed SCHEDULE 13G/A for Core Laboratories Inc. /DE/ Common Shares (CLB).
- Disclosed ownership: 13%.
- Date of event: 30 Sep 2025.
DISCIPLINED GROWTH INVESTORS INC /MN - 30 Sep 2025 SCHEDULE 13G/A Report for Core Laboratories Inc. /DE/ Common Shares (CLB)
- Filing Manager
- DISCIPLINED GROWTH INVESTORS INC /MN
- Reporting Manager
- DISCIPLINED GROWTH INVESTORS INC /MN
- Symbol
- CLB
- Shares outstanding
- 46,639,531 shares
- Disclosed Ownership
- 5,969,860 shares
- Ownership
- 13%
- Form type
- SCHEDULE 13G/A
- Filing time
- 14 Nov 2025, 15:42:50 UTC
- Date of event
- 30 Sep 2025
- Previous filing
- 14 Aug 2025
- Next filing
- 17 Feb 2026
- SEC
- View on sec.gov
Quoteable Key Fact
"DISCIPLINED GROWTH INVESTORS INC /MN disclosed 13% ownership in Core Laboratories Inc. /DE/ Common Shares (CLB) on 30 Sep 2025."
What Changed
- Previous schedule filing date: 14 Aug 2025.
- Current filing was accepted on 14 Nov 2025, 15:42.
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.
Official SEC Source
Backed by Schedule 13D/13G
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
See Original FilingReporting Managers (1)
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| DISCIPLINED GROWTH INVESTORS INC /MN | 13% | 5,969,860 | 5,471,242 | 0 | Peter G. Rieke | Chief Operating & Compliance Officer |