| Schedule of Plan's Investments at Fair Value |
The following tables present, by level within the fair value hierarchy, the Plan’s investments at fair value:
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Fair Value measurements at December 31, 2025 Using |
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Fair Value |
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Quoted Prices in Active Markets for Identical Assets (Level 1) |
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Significant Other Observable Inputs (Level 2) |
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Significant Unobservable Inputs
(Level 3) |
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Mutual funds |
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$ |
391,048,609 |
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$ |
391,048,609 |
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$ |
— |
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$ |
— |
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Money market funds |
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15,026,272 |
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15,026,272 |
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— |
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— |
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ADTRAN Holdings common stock fund |
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2,127,735 |
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2,127,735 |
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— |
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— |
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Brokerage Link |
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11,169,957 |
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11,169,957 |
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— |
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— |
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Total investments at fair value |
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419,372,573 |
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419,372,573 |
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— |
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— |
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Investments measured at net asset value (a) |
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6,823,061 |
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— |
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— |
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— |
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Total investments at fair value |
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$ |
426,195,634 |
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$ |
419,372,573 |
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$ |
— |
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$ |
— |
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Fair Value measurements at December 31, 2024 Using |
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Fair Value |
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Quoted Prices in Active Markets for Identical Assets (Level 1) |
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Significant Other Observable Inputs (Level 2) |
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Significant Unobservable Inputs
(Level 3) |
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Mutual funds |
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$ |
350,577,008 |
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$ |
350,577,008 |
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$ |
— |
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$ |
— |
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Money market funds |
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18,335,666 |
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18,335,666 |
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— |
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— |
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ADTRAN Holdings common stock fund |
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2,067,054 |
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2,067,054 |
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— |
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— |
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Brokerage Link |
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9,784,651 |
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9,784,651 |
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— |
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— |
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Total investments at fair value |
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380,764,379 |
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380,764,379 |
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— |
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— |
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Investments measured at net asset value (a) |
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8,402,285 |
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— |
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— |
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— |
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Total investments at fair value |
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$ |
389,166,664 |
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$ |
380,764,379 |
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$ |
— |
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$ |
— |
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(a)In accordance with Subtopic 820-10, the commingled trust fund was measured at net asset value per share (or its equivalent) and has not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the line items presented in the statement of net assets available for benefits.
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