TELEPHONE & DATA SYSTEMS INC /DE/

In April 2018, the United States Department of Justice (DOJ) notified TDS, that it was conducting inquiries of Array and TDS under the federal False Claims Act relating to Array’s participation in wireless spectrum license auctions 58, 66, 73 and 97 conducted by the FCC. Array is or was a limited partner in several limited partnerships which qualified for the 25% bid credit in each auction. The investigation arose from civil actions under the Federal False Claims Act brought by private parties in the U.S. District Court for the Western District of Oklahoma. In 2019, following the DOJ’s investigation, the DOJ informed Advantage Spectrum, L.P. (Advantage) and King Street Wireless, L.P. (King Street) that it would not intervene in the above-referenced actions. Subsequently, the private party plaintiffs decided to continue the actions on their own. In July 2020, these actions were transferred to the U.S. District Court for the District of Columbia upon the request of Advantage and King Street and over the objection of the Relators. In March 2023, the District Court for the District of Columbia granted Advantage’s and King Street’s motion to dismiss the actions with prejudice. The private party plaintiffs appealed the district court’s decision to grant the motions to dismiss. In April 2025, the U.S. Court of Appeals for the D.C. Circuit affirmed the district court’s dismissal as to the case involving King Street. Plaintiffs filed a petition for certiorari with the U.S. Supreme Court on September 5, 2025. The Supreme Court has requested a response from the defendants. On September 26, 2025, the D.C. Circuit reversed the district court’s decision dismissing the case involving Advantage, and remanded that case to the district court for further proceedings.

TDS and Array believe that the Relators’ claims are without merit and that Advantage’s and King Street’s participation in FCC auctions complied with applicable law and FCC Rules.

On May 2, 2023, a putative stockholder class action was filed against TDS and Array and certain current and former officers and directors in the United States District Court for the Northern District of Illinois. An Amended Complaint was filed on September 1, 2023, which names TDS, Array, and certain current Array officers and directors as defendants, and alleges that certain public statements made between May 6, 2022 and November 3, 2022 (the potential class period) regarding, among other things, Array’s business strategies to address subscriber demand, violated Section 10(b) and 20(a) of the Securities Exchange Act of 1934. The plaintiff seeks to represent a class of stockholders who purchased TDS equity securities during the potential class period and demands unspecified money damages. On November 1, 2024, the court issued a Memorandum Opinion and Order granting in part and denying in part the defendants' motion to dismiss the lawsuit. On February 28, 2025, the parties reached a settlement in principle. On April 25, 2025, the plaintiff filed a motion for preliminary approval of the settlement. On September 4, 2025, the court approved the settlement and dismissed the lawsuit in its entirety with prejudice.

On January 31, 2025, a stockholder derivative lawsuit was filed in the Circuit Court of Cook County, Illinois, Chancery Division against certain TDS and Array directors and officers, and nominal defendant TDS. The derivative lawsuit takes issue with the same public statements made between May 6, 2022 and November 3, 2022, alleging that the fact that the statements were made was a breach of fiduciary duty on the part of the officer and director defendants, and bringing claims for indemnification and contribution against the officer and director defendants and Array. In addition to indemnification and contribution, the plaintiff seeks money damages and the implementation of certain governance proposals. On July 21, 2025, a motion to intervene in the lawsuit was filed by the stockholder plaintiff who had previously filed a stockholder derivative lawsuit in the United States District Court for the Northern District of Illinois and subsequently dismissed that federal court lawsuit. The defendants filed a motion to dismiss the Circuit Court lawsuit on July 23, 2025. On September 29, 2025, the proposed intervenor withdrew her motion to intervene. A hearing on the motion to dismiss was held on October 6, 2025. A status conference on the motion to dismiss is set for January 23, 2026.

TDS is unable at this time to determine whether the outcome of these actions would have a material impact on its results of operations, financial condition, or cash flows. TDS intends to contest plaintiffs' claims vigorously on the merits.