ADTRAN Holdings Reports Preliminary Q3 FY2026 Results

What Happened

• ADTRAN Holdings, Inc. announced preliminary financial results for the fiscal quarter ended June 30, 2026. The company filed an 8-K (Item 2.02) and attached a press release dated July 21, 2026 (Exhibit 99.1).
• Because ADTRAN is listed on the Frankfurt Stock Exchange, it also published an ad hoc announcement in Germany on July 22, 2026 (CEST) under the EU Market Abuse Regulation (MAR) and included an English translation as Exhibit 99.2 (Item 7.01). The 8-K was signed by Timothy Santo, Senior VP Finance and CFO, on July 22, 2026.

Key Details

• Filing: Form 8-K dated July 22, 2026 reporting preliminary quarterly results (Item 2.02).
• Press release: Exhibit 99.1 — Press Release dated July 21, 2026.
• MAR ad hoc: Exhibit 99.2 — Ad hoc Notification dated July 22, 2026 (English translation) published in Germany per MAR.
• Signature: Signed by Timothy Santo (SVP Finance & CFO) on July 22, 2026.

Why It Matters

• The company is providing an early update on quarterly earnings and complying with both U.S. disclosure rules and EU MAR requirements; the MAR ad hoc notice indicates the preliminary results were material enough to require real-time disclosure in Germany.
• For investors, this is a timely signal to review ADTRAN’s upcoming formal earnings release and conference call (if scheduled) because preliminary results can affect revenue and earnings expectations, analyst estimates, and short-term share price movement.