| Fair Value Measurements |
The following tables set forth by level within the fair value hierarchy, the Plan investments measured at fair value on a recurring basis:
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Investments at Fair Value as of December 31, 2025 | | | | Level 1 | | Level 2 | | Level 3 | | Total | | | | | | | | | | | | | Mutual funds | $ | 533,614,450 | | $ | — | | $ | — | | $ | 533,614,450 | | | | Money market fund | | — | | | 33,201,277 | | | — | | | 33,201,277 | | | | STMicroelectronics N.V. stock fund | | 7,572,676 | | | — | | | — | | | 7,572,676 | | | | Self-directed brokerage accounts | | 22,075,253 | | | 348,519 | | | — | | | 22,423,772 | | | | Total investments measured at fair value | | 563,262,379 | | | 33,549,796 | | | — | | | 596,812,175 | | | | Common Collective Trust measured at net asset value (a) | | — | | | — | | | — | | | 8,122,031 | | | | | | | | | | | | | | Total investments | $ | 563,262,379 | | $ | 33,549,796 | | $ | — | | $ | 604,934,206 | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Investments at Fair Value as of December 31, 2024 | | | | Level 1 | | Level 2 | | Level 3 | | Total | | | | | | | | | | | | | Mutual funds | $ | 500,842,496 | | $ | — | | $ | — | | $ | 500,842,496 | | | | Money market fund | | — | | | 36,975,032 | | | — | | | 36,975,032 | | | | STMicroelectronics N.V. stock fund | | 7,998,463 | | | — | | | — | | | 7,998,463 | | | | Self-directed brokerage accounts | | 18,943,213 | | | — | | | — | | | 18,943,213 | | | | Total investments measured at fair value | | 527,784,172 | | | 36,975,032 | | | — | | | 564,759,204 | | | | Common Collective Trust measured at net asset value (a) | | — | | | — | | | — | | | 6,040,872 | | | | | | | | | | | | | | Total investments | $ | 527,784,172 | | $ | 36,975,032 | | $ | — | | $ | 570,800,076 | | |
(a) Certain investments that are measured at fair value using the NAV per share (or its equivalent) as a practical expedient have not been categorized 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 amounts presented in the Statements of Net Assets Available for Plan Benefits.
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