WILLIAM BLAIR INVESTMENT MANAGEMENT LLC 13D and 13G filings for ADTRAN Holdings, Inc.:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Shares have been adjusted for stock splits.
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2024-11-14 11:03 am Purchase | 2024-09-30 | 13G | ADTRAN Holdings, Inc. ADTN | WILLIAM BLAIR INVESTMENT MANAGEMENT LLC | 4,873,121 6.200% | 871,950 (+21.79%) | Filing |
| 2024-02-12 6:04 pm Purchase | 2023-12-31 | 13G | ADTRAN Holdings, Inc. ADTN | WILLIAM BLAIR INVESTMENT MANAGEMENT LLC | 4,001,171 5.100% | 4,001,171 (New Position) | Filing |