5G-Based Timing Delivery of 20 Nanosecond Synchronization Exceeds International Timing Standards and Critical Infrastructure Requirements

NextNav Inc. (NASDAQ:NN), a leader in next-generation terrestrial positioning, navigation, and timing (PNT) and 3D geolocation solutions, today announced real-world field validation of timing accuracy of approximately 20 nanoseconds (billionths of a second) using Positioning Reference Signals (PRS) transmitted by its operational 5G PNT Network in Santa Clara County, CA. The field validation was conducted over-the-air in both outdoor and indoor environments, including GPS-denied locations. The timing results demonstrate how NextNav's planned 5G-powered 3D PNT solution in the lower 900 MHz band can deliver timing information to serve critical infrastructure needs.

NextNav's solution is capable of reaching locations where GPS may be unavailable, such as indoors, in urban canyons, or in GPS-denied environments. The timing accuracy performance significantly exceeds the 100-nanosecond requirement for critical infrastructure applications, and the stability meets key international timing standards like ITU PRTC Telecom Mask B.

"This is an important proof point for our commercial readiness and shows that NextNav can deliver the timing accuracy and stability required for a range of mission-critical capabilities, including some of the most demanding, such as AI data centers, electric utilities, telecom networks, public safety, and national security applications," said Arun Raghupathy, Co-Founder and CTO at NextNav. "Precise timing is a foundational layer for the critical infrastructure powering the modern economy, and these results show our standards-based terrestrial 5G-powered 3D PNT solution can serve as an important complement and backup to GPS."

For more information on these timing results, NextNav released a blog following the company's presentation on May 6, 2026, at the Workshop on Synchronization and Timing Systems (WSTS), hosted by the Alliance for Telecommunications Industry Solutions.

About NextNav

NextNav Inc. (NASDAQ:NN) is a leader in next-generation 3D Positioning, Navigation, and Timing (PNT) solutions. As the nation's largest license holder in a spectrum band expressly designated for terrestrial positioning services, NextNav is uniquely positioned to enable a widescale terrestrial complement and backup to GPS. Leveraging licensed low-band spectrum and the global 5G ecosystem, NextNav is focused on delivering an accurate, reliable, and resilient 3D PNT solution to protect national security, public safety, and the economy. Learn more at www.nextnav.com.

For more information, please visit https://nextnav.com/ or follow NextNav on X at https://x.com/NextNav or LinkedIn at https://www.linkedin.com/company/nextnav/.

Forward-Looking Statements

This press release contains "forward‑looking statements" within the meaning of the safe harbor provisions of the United States Private Securities Litigation Reform Act of 1995. Forward‑looking statements can be identified by the use of words such as "estimate," "plan," "project," "forecast," "intend," "will," "expect," "anticipate," "believe," "seek," "target," or other similar expressions that predict or indicate future events or trends or that are not statements of historical matters. These statements are based on various assumptions and are not predictions of actual performance.

These forward‑looking statements are subject to a number of risks and uncertainties, including, but not limited to, the following factors: difficulties, delays, or unforeseen challenges in the development, deployment, operation, or integration of NextNav's network, assets, software, or other technologies, including its next‑generation terrestrial 3D PNT technology; adverse regulatory developments, including action or inaction by the Federal Communications Commission ("FCC") or other federal or state governmental authorities affecting spectrum allocation, location‑based services, the use of licensed spectrum, or E911 or related requirements; the outcome and timing of NextNav's pending petition for rulemaking before the FCC and the possibility that the FCC may not issue a notice of proposed rulemaking ("NPRM"), may delay or decline to adopt a subsequent report and order ("R&O"), or may adopt rules that differ materially from those sought by NextNav; and NextNav's ability to execute its business plan, including entering into and maintaining strategic partnerships, managing growth, and achieving or sustaining profitability.

These factors are not exhaustive. Additional risks and uncertainties that could cause actual results to differ materially from those expressed or implied in the forward‑looking statements are described in NextNav's filings with the Securities and Exchange Commission, including, but not limited to, the "Risk Factors" section of NextNav's most recent Annual Report on Form 10‑K and subsequent Quarterly Reports on Form 10‑Q.

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Investor Contact:

IR@nextnav.com

Media Contact:

NNmedia@nextnav.com

NextNav Demonstrates Exceptional First-Ever Wireless Indoor Timing Solution for Critical Infrastructure