Adtran Inc Stock Price, News & Analysis

NextNav (Nasdaq: NN) and Oscilloquartz announced successful integration of NextNav 5G-based PNT (Positioning, Navigation, and Timing) technology with an Oscilloquartz GNSS-enabled grandmaster clock on October 24, 2025.

The combined system produced GPS-quality timing outputs (PPS and time-of-day) in both outdoor and indoor environments when GPS was absent or degraded by fusing 5G PRS, GPS, and the grandmaster clock. Oscilloquartz’s grandmaster uses a Zero Trust Architecture and accepts multiple timing sources to provide redundancy and resilient synchronization for national security, public safety, telecom, financial services, and other mission-critical infrastructure.

Adtran (NASDAQ:ADTN) announced that its Oscilloquartz platforms now support Galileo OSNMA, the first civilian GNSS authentication service, via firmware update for supported multi-band GNSS receivers. The upgrade verifies navigation messages using digital signatures and TESLA chain keys to ensure timing authenticity and protect against spoofing and manipulation. Available for OSA 5412, OSA 5422, OSA 5430 and OSA 5440, the feature pairs OSNMA with Oscilloquartz Syncjack™ probing to detect record-and-replay (meaconing) attacks by cross-checking GNSS against trusted PTP sources. The update requires no hardware replacement and aims to boost timing resilience for 5G, finance, data centers, energy and other critical infrastructure.

ADTRAN Holdings (NASDAQ: ADTN) will release its third quarter 2025 financial results after market close on Monday, November 3, 2025.

The company will host an earnings conference call on Tuesday, November 4, 2025 at 9:30 a.m. Central Time (4:30 p.m. Central European Time). The call will be webcast and available via the company's Investor Relations site, with dial-in access using Conference ID 8936454. An online replay and transcript will be posted and remain available for at least 12 months.

Adtran (NASDAQ:ADTN) on October 14, 2025 launched Mosaic One Clarity, an AI-driven network operations module built on its REAL AI platform to provide predictive maintenance, explainable insights, guided remediation and continuous learning across multi-vendor access and in-home networks.

The solution is already in several customer trials and aims to reduce site visits, shorten repair times and improve service quality without major infrastructure changes. A trial customer projects up to 75% fewer trouble tickets per month based on early results.

Adtran (NASDAQ:ADTN) showcased its open networking capabilities at the OIF's ECOC 2025 demonstration, featuring its FSP 3000 open line system (OLS) and coherent pluggable transceivers. The company demonstrated a 300km multi-span link supporting speeds from 100Gbit/s to 800Gbit/s in a multi-vendor environment.

The showcase included Adtran's 100ZR+ and 400ZRE coherent pluggables, which were validated across multiple hosts and platforms during the OIF Plugfest. The FSP 3000 OLS supports data rates up to 1.6Tbit/s and features high-resolution flexgrid, colorless ROADMs, and automated monitoring capabilities.

ADTRAN Holdings (NASDAQ: ADTN) has priced an upsized offering of $175.0 million convertible senior notes due 2030, increased from the initially announced $150.0 million. The notes will carry a 3.75% interest rate, payable semi-annually, with an initial conversion price of $11.52 per share, representing a 30% premium over the current stock price.

The company will use approximately $15.3 million for capped call transactions and $152.8 million to repay outstanding borrowings under the Wells Fargo Credit Agreement. The notes include provisions for early conversion, redemption, and repurchase under specific conditions. To mitigate potential dilution, ADTRAN has entered into capped call transactions with a cap price of $15.51 per share.

ADTRAN Holdings (NASDAQ: ADTN) has announced plans to offer $150 million in convertible senior notes due 2030 through a private offering to qualified institutional buyers. The company also granted an option for an additional $22.5 million in notes. The notes will be senior, unsecured obligations with semi-annual interest payments.

The notes will be convertible under certain conditions, with ADTRAN settling conversions through a combination of cash and common stock. The company plans to use the proceeds to fund capped call transactions and repay existing credit agreement borrowings. The capped call transactions are designed to reduce potential dilution from note conversions and offset potential cash payments above the principal amount.

Adtran (NASDAQ:ADTN) has launched the OSA 5401XG SyncPlug™, an innovative SFP-based grandmaster clock designed for precise timing in 10Gbit/s edge and access networks. The device delivers PTP and NTP synchronization in a compact, plug-in form factor that integrates directly into existing infrastructure.

The new solution features multi-band GNSS support, PRTC‑B compliance, and consumes less than 2.5W of power. Key capabilities include advanced spoofing and jamming detection, extended holdover, and support for up to 500,000 NTP transactions per second. The device is targeted at various sectors including telecom, energy, defense, and enterprise networks.