As of March 31, 2025 and December 31, 2024, UScellular did not have any material financial or nonfinancial assets or liabilities that were required to be recorded at fair value in its Consolidated Balance Sheet in accordance with GAAP.

The provisions of GAAP establish a fair value hierarchy that contains three levels for inputs used in fair value measurements. Level 1 inputs include quoted market prices for identical assets or liabilities in active markets. Level 2 inputs include quoted market prices for similar assets and liabilities in active markets or quoted market prices for identical assets and liabilities in inactive markets. Level 3 inputs are unobservable. A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. A financial instrument’s level within the fair value hierarchy is not representative of its expected performance or its overall risk profile and, therefore Level 3 assets are not necessarily higher risk than Level 2 assets or Level 1 assets.

As of March 31, 2025, UScellular recorded a net written call option at fair value, which was considered Level 3 within the fair value hierarchy. See Note 6 — Divestitures for additional information.

UScellular has applied the provisions of fair value accounting for purposes of computing the fair value of financial instruments for disclosure purposes as displayed below.


	Level within the Fair Value Hierarchy	March 31, 2025				December 31, 2024
		Book Value		Fair Value		Book Value		Fair Value
(Dollars in millions)
Long-term debt	2	$	2,882	$	2,791	$	2,890	$	2,785

Long-term debt excludes lease obligations, the current portion of Long-term debt and debt financing costs. The fair value of Long-term debt was estimated using various methods, including quoted market prices and discounted cash flow analyses.