ADTRAN (ADTN) CTO Christoph Glingener Receives Award 9,384 Shares

What Happened

• Christoph Glingener, Chief Technology Officer of ADTRAN Holdings, received 9,384 shares on 2026-07-24 as the vesting of performance stock units. The Form 4 reports an acquisition price of $0.00 (these were granted/vested equity awards rather than an open-market purchase).

Key Details

• Transaction date: 2026-07-24; Filing date: 2026-07-28 (filed 4 days after the transaction; exceeds the typical 2-business-day Form 4 deadline).
• Transaction type/code: Award/Grant (A) — vesting of performance stock units.
• Shares acquired: 9,384; reported acquisition price: $0.00.
• Shares owned after transaction: not disclosed in the provided filing excerpt.
• Footnote: These shares represent vesting of performance stock units awarded under the Amended and Restated ADTRAN Holdings, Inc. 2020 Employee Stock Incentive Plan on May 24, 2023.
• No 10b5-1 plan, tax withholding, or immediate sale was reported in the excerpt.

Context

• This transaction reflects compensation (vesting of PSUs) rather than a purchase or sale by the insider. Such awards are part of executive pay programs and do not by themselves indicate buying or selling sentiment. No subsequent sale of these vested shares is reported in the provided filing.