PlusAI Files Amended SEC Registration Statement For SPAC Merger With Churchill IX; Advances Toward 2026 Nasdaq Listing, Expected To Be Listed On Nasdaq Under The Ticker Symbol "PLS"

PlusAI, a leader in AI software for autonomous trucks, and Churchill Capital Corp IX (NASDAQ:CCIX), a publicly traded special purpose acquisition company, today announced an amended filing with the U.S. Securities and Exchange Commission of their joint registration statement on Form S-4 (the "Registration Statement") in connection with the proposed business combination. The Registration Statement includes a preliminary proxy statement/prospectus and has not yet been declared effective. The information contained therein is subject to change. The filing follows the first amendment of a draft registration statement on December 5, 2025, and represents a step in the process toward completion of the previously disclosed proposed business combination between PlusAI and Churchill Capital Corp IX ("Churchill IX").

PlusAI is a differentiated leader in autonomous trucking software, built from the ground up as an AI-native virtual driver company. Founded in Silicon Valley in 2016, PlusAI has replaced traditional hand-coded autonomy stacks with advanced AI models trained on more than six million miles of real-world operations across the U.S., Europe, and Asia. This dataset, combined with proprietary foundation models and a highly optimized in-vehicle neural architecture, enables SuperDrive™ to generalize across routes, geographies, and vehicle platforms. Designed specifically for commercial on-highway heavy-duty trucking, the system combines advanced perception, prediction, and planning intelligence with multilayered safety and redundancy tailored to support reliable, commercial-scale Level 4 operation. PlusAI is partnering with leading global truck OEMs including TRATON GROUP (International, Scania, and MAN), Hyundai, and IVECO to provide a uniquely scalable model to drive large scale adoption of autonomous trucks by fleet operators.

Since announcing the proposed business combination with Churchill IX, PlusAI has continued to advance its autonomy programs and lay the foundation for the planned 2027 commercial launch of SuperDrive™-enabled factory-built autonomous trucks:

• Customer Fleet Trials Launched in Texas: International Trucks and PlusAI initiated customer fleet trials along the I-35 corridor between Laredo and Dallas, deploying next-generation tractors equipped with factory-installed sensors, onboard compute, and the latest release of PlusAI's SuperDrive™ autonomous driving software.
• World-First Precision Bike Jump with Driverless Trucks: Scania and PlusAI partnered with Red Bull on a globally recognized first-of-its-kind precision autonomy demonstration. Two autonomous Scania trucks, powered by SuperDrive™, executed perfectly synchronized maneuvers to create a split-second jump window for Red Bull athlete Matt Jones. The demonstration highlighted the exceptional precision, timing, and control of TRATON's autonomous platform under highly dynamic conditions.
• Material Progress in Autonomous Performance Metrics: PlusAI announced significant advancement in SuperDrive™ commercial readiness, reporting Safety Case Readiness (SCR) of 86% for the first half of 2025, up from 75% in the second half of 2024, reflecting continued improvement across core safety and system-maturity benchmarks.
• NVIDIA-Powered Level 4 Development Collaboration: International and PlusAI are accelerating Level 4 autonomy development leveraging the NVIDIA DRIVE AGX Hyperion platform, which provides the high-performance compute, sensor processing, and system architecture required for scalable, production-grade autonomous trucking.
• Driverless Safety Maneuver Validation: PlusAI successfully completed a series of driverless safety-maneuver validation tests using International trucks equipped with SuperDrive™, demonstrating autonomous fallback procedures, emergency responses, and complex edge-case handling with no driver in the cab and no remote intervention.

Upon closing, the combined company will operate as "PlusAI" and is expected to be listed on Nasdaq under the ticker symbol "PLS." The business combination remains subject to approval by Churchill IX shareholders, the Registration Statement being declared effective by the SEC, and other customary closing conditions. The business combination is expected to close in Q1 of 2026.