| Type | Title | Date Released | |
|---|---|---|---|
4 | Wilson James Denson Jr (Reporting) | ||
10-Q | Form 10-Q | ||
8-K | ADTRAN Holdings Reports Third Quarter 2026 Financial Results and Provides Q4 Outlook | ||
4 | Terlinde Christian (Reporting) | ||
3 | Terlinde Christian (Reporting) | ||
SCHEDULE 13G | VANGUARD CAPITAL MANAGEMENT LLC (Filed by) | ||
8-K | ADTRAN Holdings, Inc. Appoints Dr. Christian H. Terlinde to Board of Directors | ||
8-K | Adtran Holdings Amends Employment Agreement for CTO Christoph Glingener | ||
4 | Glingener Christoph (Reporting) | ||
4 | Santo Timothy P (Reporting) | ||
10-Q | Form 10-Q | ||
8-K | ADTRAN Holdings, Inc. Reports Second Quarter 2026 Financial Results |