0000932787-26-000043 | 11-K | XBRL Viewer

Plan Termination	12 Months Ended
Dec. 31, 2025
EBP 001
EBP, Plan Termination [Line Items]
Plan Termination	Plan Termination Although it has not expressed any intent to do so, ST, Inc. has the right under the Plan to discontinue contributions and may elect to terminate the Plan at any time, subject to the provisions of the Plan document and ERISA. In the event of termination, partial termination, or discontinuance of the Plan, the Plan is required to pay any outstanding employer contributions due under the Plan and each participant shall be 100% vested in the Plan.

Related Party and Party-In-Interest Transactions	12 Months Ended
Dec. 31, 2025
EBP 001
EBP, Related Party and Party-in-Interest Transactions [Line Items]
Related Party and Party-In-Interest Transactions	Related Party and Party-In-Interest Transactions Certain investments of the Plan consist of money market and mutual funds managed by the Trustee, Fidelity Management Trust Company. Certain advisory services are provided to the Plan by Strategic Advisors, Inc. an affiliate of the Trustee. These transactions are considered exempt party-in-interest transactions. The Trustee and recordkeeper provides certain administrative services to the Plan pursuant to agreements with the Company. The Plan also issues notes to participants, which are secured by the participant’s account balances. These transactions qualify as exempt party-in-interest transactions under ERISA. In addition, certain employees of the Company provide administrative services for the Plan and are not reimbursed for their services from the Plan. Substantially all other administrative and legal expenses are paid by the Company on behalf of the Plan. In addition, the Plan investments include purchases and sales of stock in STMicroelectronics N.V., the parent company of ST, Inc.. At December 31, 2025 and 2024, the Plan held 283,071 and 311,152 shares, respectively, of the parent company’s common stock, with a cost basis of $6,476,290 and $7,130,504, respectively.

Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2025

EBP, Investment, Fair Value and NAV [Line Items]

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.

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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+ Details

- Definition

Tabular disclosure of fair value of investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), including, but not limited to, fair value measured at net asset value per share as practical expedient (NAV).

+ References

+ Details

Tax Status	12 Months Ended
Dec. 31, 2025
EBP 001
EBP, Tax Status [Line Items]
Tax Status	Tax Status The Plan obtained its latest determination letter on April 20, 2018, in which the Internal Revenue Service stated that the Plan, as then designed, was in compliance with the applicable requirements of the Internal Revenue Code (“IRC”). Although the Plan has been amended since receiving the determination letter, management believes that the Plan is designed, and is currently being operated, in compliance with the applicable requirements of the IRC and, therefore, believe that the Plan is qualified, and the related trust is tax-exempt. GAAP requires plan management to evaluate tax positions taken by the Plan and recognize a tax liability (or asset) if the organization has taken an uncertain position that more likely than not would not be sustained upon examination by the Internal Revenue Service. The Plan Administrator has analyzed the tax positions taken by the Plan, and has concluded that as of December 31, 2025 and 2024, there are no uncertain positions taken or expected to be taken that would require recognition of the liability (or asset) or disclosure in the financial statements. The Plan is subject to routine audits by taxing jurisdictions; however, there are currently no audits for any tax periods in progress.

Fair Value Measurements - Schedule of Fair Value and NAV (Details) - EBP 001 - USD ($)	Dec. 31, 2025	Dec. 31, 2024
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	$ 604,934,206	$ 570,800,076
Mutual funds
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	533,614,450	500,842,496
Money market fund
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	33,201,277	36,975,032
STMicroelectronics N.V. stock fund
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	7,572,676	7,998,463
Self-directed brokerage accounts
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	22,423,772	18,943,213
Common collective trust
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	8,122,031	6,040,872
Total
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	596,812,175	564,759,204
Total \| Mutual funds
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	533,614,450	500,842,496
Total \| Money market fund
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	33,201,277	36,975,032
Total \| STMicroelectronics N.V. stock fund
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	7,572,676	7,998,463
Total \| Self-directed brokerage accounts
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	22,423,772	18,943,213
Level 1
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	563,262,379	527,784,172
Level 1 \| Mutual funds
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	533,614,450	500,842,496
Level 1 \| Money market fund
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	0	0
Level 1 \| STMicroelectronics N.V. stock fund
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	7,572,676	7,998,463
Level 1 \| Self-directed brokerage accounts
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	22,075,253	18,943,213
Level 2
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	33,549,796	36,975,032
Level 2 \| Mutual funds
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	0	0
Level 2 \| Money market fund
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	33,201,277	36,975,032
Level 2 \| STMicroelectronics N.V. stock fund
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	0	0
Level 2 \| Self-directed brokerage accounts
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	348,519	0
Level 3
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	0	0
Level 3 \| Mutual funds
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	0	0
Level 3 \| Money market fund
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	0	0
Level 3 \| STMicroelectronics N.V. stock fund
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	0	0
Level 3 \| Self-directed brokerage accounts
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	0	0
NAV \| Common collective trust
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	$ 8,122,031	$ 6,040,872

Fair Value Measurements - Narrative (Details)	Dec. 31, 2025 USD ($)
Common collective trust \| EBP 001
EBP, Investment, Fair Value and NAV [Line Items]
Unfunded commitment	$ 0

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

Schedule H, Line 4i – Schedule of Assets (Held At End of Year) (Details) - EBP 001	12 Months Ended
	Dec. 31, 2025 USD ($)
EBP, Schedule of Asset Held for Investment [Line Items]
Entity tax identification bumber	04-2495946
Plan number	001
Total investments	$ 604,934,206
Participant loans	1,617,395
Total	$ 606,551,601
Minimum
EBP, Schedule of Asset Held for Investment [Line Items]
Interest rate	3.25%
Maximum
EBP, Schedule of Asset Held for Investment [Line Items]
Interest rate	8.50%
Investment, Identifier [Axis]: Common Collective Trust \| Columbia Trust Dividend Income Fund Institutional Class 300
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	$ 8,122,031
Investment, Identifier [Axis]: Common Stock \| STMicroelectronics N.V. Common Stock Shares
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	7,342,862
Investment, Identifier [Axis]: Money Market Fund \| Fidelity Investments Money Market Government Portfolio – Institutional Class
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	33,201,277
Investment, Identifier [Axis]: Money Market Fund \| Fidelity Investments Money Market Treasury Portfolio
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	229,814
Investment, Identifier [Axis]: Mutual Funds \| Allspring Special Small Cap Value Fund - Class R6
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	458,741
Investment, Identifier [Axis]: Mutual Funds \| Cohen & Steers Institutional Realty Shares
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	4,011,189
Investment, Identifier [Axis]: Mutual Funds \| Fidelity 500 Index Fund
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	96,379,933
Investment, Identifier [Axis]: Mutual Funds \| Fidelity Balanced Fund - Class K6
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	10,167,553
Investment, Identifier [Axis]: Mutual Funds \| Fidelity Contrafund – Class K6
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	85,461,899
Investment, Identifier [Axis]: Mutual Funds \| Fidelity Emerging Markets Fund - Class K
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	6,431,087
Investment, Identifier [Axis]: Mutual Funds \| Fidelity Freedom 2010 Fund – Class K6
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	997,097
Investment, Identifier [Axis]: Mutual Funds \| Fidelity Freedom 2015 Fund – Class K6
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	3,247,486
Investment, Identifier [Axis]: Mutual Funds \| Fidelity Freedom 2020 Fund – Class K6
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	3,774,439
Investment, Identifier [Axis]: Mutual Funds \| Fidelity Freedom 2025 Fund – Class K6
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	15,850,588
Investment, Identifier [Axis]: Mutual Funds \| Fidelity Freedom 2030 Fund – Class K6
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	30,524,367
Investment, Identifier [Axis]: Mutual Funds \| Fidelity Freedom 2035 Fund – Class K6
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	36,598,668
Investment, Identifier [Axis]: Mutual Funds \| Fidelity Freedom 2040 Fund – Class K6
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	29,790,391
Investment, Identifier [Axis]: Mutual Funds \| Fidelity Freedom 2045 Fund – Class K6
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	15,587,468
Investment, Identifier [Axis]: Mutual Funds \| Fidelity Freedom 2050 Fund – Class K6
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	10,974,445
Investment, Identifier [Axis]: Mutual Funds \| Fidelity Freedom 2055 Fund – Class K6
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	5,613,893
Investment, Identifier [Axis]: Mutual Funds \| Fidelity Freedom 2060 Fund – Class K6
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	2,946,554
Investment, Identifier [Axis]: Mutual Funds \| Fidelity Freedom 2065 Fund – Class K6
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	1,172,587
Investment, Identifier [Axis]: Mutual Funds \| Fidelity Freedom Income Fund – Class K6
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	699,620
Investment, Identifier [Axis]: Mutual Funds \| Fidelity International Index Fund
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	11,408,014
Investment, Identifier [Axis]: Mutual Funds \| Fidelity Low-Priced Stock Fund - Class K6
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	6,429,321
Investment, Identifier [Axis]: Mutual Funds \| Fidelity Mid-Cap Stock Fund - Class K6
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	7,616,012
Investment, Identifier [Axis]: Mutual Funds \| Fidelity Puritan Fund - Class K6
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	9,630,779
Investment, Identifier [Axis]: Mutual Funds \| Fidelity Total Bond Fund - Class K6
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	10,922,543
Investment, Identifier [Axis]: Mutual Funds \| Fidelity U.S. Bond Index Fund
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	11,749,470
Investment, Identifier [Axis]: Mutual Funds \| Harbor Capital Appreciation Fund Institutional Class
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	18,673,363
Investment, Identifier [Axis]: Mutual Funds \| MFS International Diversification Fund Class R6
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	2,125,934
Investment, Identifier [Axis]: Mutual Funds \| MainStay MacKay High Yield Corporate Bond Fund Class R6
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	5,725,975
Investment, Identifier [Axis]: Mutual Funds \| PIMCO Real Return Fund Institutional Class
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	3,318,969
Investment, Identifier [Axis]: Mutual Funds \| Vanguard Growth Index Fund Institutional Shares
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	47,443,246
Investment, Identifier [Axis]: Mutual Funds \| Vanguard Mid-Cap Index Fund Institutional Shares
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	17,535,048
Investment, Identifier [Axis]: Mutual Funds \| Vanguard Small-Cap Index Fund Admiral Shares
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	4,119,870
Investment, Identifier [Axis]: Mutual Funds \| Vanguard Value Index Fund Institutional Shares
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	15,399,726
Investment, Identifier [Axis]: Mutual Funds \| Wasatch Core Growth Fund Institutional Class Shares
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	828,175
Investment, Identifier [Axis]: Participant-Directed Brokerage Account \| BrokerageLink
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	22,423,772
Mutual funds
EBP, Schedule of Asset Held for Investment [Line Items]
Total investments	$ 533,614,450

Schedule H, Line 4i – Schedule of Assets (Held At End of Year)

12 Months Ended

Dec. 31, 2025

EBP 001

EBP, Schedule of Asset Held for Investment [Line Items]

Schedule H, Line 4i – Schedule of Assets (Held At End of Year)

STMicroelectronics, Inc. 401(k) Savings Plan


Schedule H, line 4i – Schedule of Assets (Held at End of Year)

EIN: 04-2495946

As of December 31, 2025

Plan Number: 001

(a)

(b)

(c)

(d)

(e)

Identity of Issue, Borrower,

Lessor or Similar Party

Description of Investment Including Maturity Date, Rate of Interest, Collateral, Par, or Maturity Value

Cost

Current Value

Mutual Funds

Fidelity 500 Index Fund

Mutual Fund

96,379,933

Fidelity Contrafund – Class K6

Mutual Fund

85,461,899

Vanguard Growth Index Fund Institutional Shares

Mutual Fund

47,443,246

Fidelity Freedom 2035 Fund – Class K6

Mutual Fund

36,598,668

Fidelity Freedom 2030 Fund – Class K6

Mutual Fund

30,524,367

Fidelity Freedom 2040 Fund – Class K6

Mutual Fund

29,790,391

Harbor Capital Appreciation Fund Institutional Class

Mutual Fund

18,673,363

Vanguard Mid-Cap Index Fund Institutional Shares

Mutual Fund

17,535,048

Fidelity Freedom 2025 Fund – Class K6

Mutual Fund

15,850,588

Fidelity Freedom 2045 Fund – Class K6

Mutual Fund

15,587,468

Vanguard Value Index Fund Institutional Shares

Mutual Fund

15,399,726

Fidelity U.S. Bond Index Fund

Mutual Fund

11,749,470

Fidelity International Index Fund

Mutual Fund

11,408,014

Fidelity Freedom 2050 Fund – Class K6

Mutual Fund

10,974,445

Fidelity Total Bond Fund - Class K6

Mutual Fund

10,922,543

Fidelity Balanced Fund - Class K6

Mutual Fund

10,167,553

Fidelity Puritan Fund - Class K6

Mutual Fund

9,630,779

Fidelity Mid-Cap Stock Fund - Class K6

Mutual Fund

7,616,012

Fidelity Emerging Markets Fund - Class K

Mutual Fund

6,431,087

Fidelity Low-Priced Stock Fund - Class K6

Mutual Fund

6,429,321

MainStay MacKay High Yield Corporate Bond Fund Class R6

Mutual Fund

5,725,975

Fidelity Freedom 2055 Fund – Class K6

Mutual Fund

5,613,893

Vanguard Small-Cap Index Fund Admiral Shares

Mutual Fund

4,119,870

Cohen & Steers Institutional Realty Shares

Mutual Fund

4,011,189

Fidelity Freedom 2020 Fund – Class K6

Mutual Fund

3,774,439

PIMCO Real Return Fund Institutional Class

Mutual Fund

3,318,969

Fidelity Freedom 2015 Fund – Class K6

Mutual Fund

3,247,486

Fidelity Freedom 2060 Fund – Class K6

Mutual Fund

2,946,554

MFS International Diversification Fund Class R6

Mutual Fund

2,125,934

Fidelity Freedom 2065 Fund – Class K6

Mutual Fund

1,172,587

Fidelity Freedom 2010 Fund – Class K6

Mutual Fund

997,097

Wasatch Core Growth Fund Institutional Class Shares

Mutual Fund

828,175

Fidelity Freedom Income Fund – Class K6

Mutual Fund

699,620

Allspring Special Small Cap Value Fund - Class R6

Mutual Fund

458,741

533,614,450

Fidelity Investments Money Market Government Portfolio – Institutional Class

Money Market Fund

33,201,277

STMicroelectronics N.V. Stock Fund:

STMicroelectronics N.V. Common Stock Shares

Common Stock

7,342,862

Fidelity Investments Money Market Treasury Portfolio

Money Market Fund

229,814

BrokerageLink

Participant-Directed Brokerage Account

22,423,772

Columbia Trust Dividend Income Fund Institutional Class 300

Common Collective Trust

8,122,031

Total investments

604,934,206

Participant loans

Interest rates from 3.25% to 8.50%, maturing through 2030 and collateralized by the participant's account balance

1,617,395

Total

606,551,601

* A party-in-interest as defined by ERISA.

** Cost is not required for participant-directed investments.

Statements of Net Assets Available for Benefits - EBP 001 - USD ($)	Dec. 31, 2025	Dec. 31, 2024
Assets
Total investments	$ 604,934,206	$ 570,800,076
Notes receivable from participants	1,617,395	1,465,832
Total assets	606,551,601	572,265,908
Liabilities
Accrued fees and other liabilities	28,137	22,134
Total liabilities	28,137	22,134
Net assets available for plan benefits	606,523,464	572,243,774
Mutual funds
Assets
Total investments	533,614,450	500,842,496
Money market fund
Assets
Total investments	33,201,277	36,975,032
Self-directed brokerage accounts
Assets
Total investments	22,423,772	18,943,213
STMicroelectronics N.V. stock fund
Assets
Total investments	7,572,676	7,998,463
Common collective trust
Assets
Total investments	$ 8,122,031	$ 6,040,872

Plan Description	12 Months Ended
Plan Description	Dec. 31, 2025
EBP 001
EBP, Description of Plan [Line Items]
Plan Description	Plan Description The following description of the STMicroelectronics, Inc. 401(k) Savings Plan (the “Plan”) is provided for general information purposes only. Plan participants should refer to the summary plan description and the Plan document for a more comprehensive description of the Plan’s provisions. General The Plan is a defined contribution 401(k) savings plan adopted on January 1, 1988 for the benefit of eligible employees of STMicroelectronics, Inc. (“ST, Inc. / Company / Employer / Plan Administrator”). The Plan permits voluntary participant contributions and employer automatic and matching contributions. The Plan is subject to the provisions of the Employee Retirement Income Security Act of 1974, as amended (“ERISA”). Administration The Company is responsible for the administration and operation of the Plan. Fidelity Management Trust Company is the Plan’s trustee (“Trustee”) and is responsible for the custody and management of the Plan’s assets. Fidelity Investment Institutional Operations Company, Inc., an affiliate of the Trustee, serves as the Plan’s recordkeeper. Eligibility All employees of ST, Inc. who are at least 18 years of age are eligible to participate in the Plan. Employees who are excluded from participating in the Plan are: (i) employees who are leased (as defined under code 414(n) of the Internal Revenue Code); (ii) an employee who is not a citizen of the United States, was transferred from employment with an affiliated company to employment with ST, Inc. for temporary expatriate service in the United States and was not a participant in the superseded plan on December 31, 1995; (iii) an employee who is an intern or co-op participating in an intern or co-op program; (iv) an employee who is bound by a collective bargaining agreement; or (v) an employee who was not a participant in the superseded plan on December 31, 1995, and for whom contributions are being made to or benefits are being accrued under a foreign governmental pension plan or foreign social security system or under a pension plan maintained by an affiliated company primarily for the benefit of employees who are nonresident aliens with respect to the United States. Contributions Eligible employees may make pre-tax deferrals, after-tax Roth 401(k) deferrals, or a combination of both up to 75% (or such lesser percentage as the President of STMicroelectronics, Inc. may specify from time to time), including catch-up contributions, of their compensation each pay period up to an annual tax dollar limitation in accordance with guidance of the Internal Revenue Service. The Internal Revenue Service limitations were $23,500 with an additional $7,500 catch-up for employees 50 or older during the calendar year 2025. Those employees between the ages of 60 and 63 are eligible to contribute up to $11,250 as a "super" catch-up contribution in lieu of the $7,500. Employer contributions are made by ST, Inc. each payroll period of 100% of the participant’s contribution up to 4% of participant’s eligible compensation. An additional contribution is made by ST, Inc. of 1% to 3% of each participant’s eligible compensation, based on a participant’s length of service. Participants may make Roth in-plan conversions. Rollover contributions are also permitted from a participant’s personal or prior employer tax deferred retirement accounts. Participants can change or suspend their contributions at any time. Participant Accounts Individual accounts are maintained for each participant of the Plan. Each participant’s account is credited with the participant’s contributions, company matching contributions, and Plan earnings as applicable. Participant accounts are also charged with withdrawals, an allocation of Plan losses as applicable, and per participant administrative expenses that are not paid by the Company. Allocations are based on participant earnings or account balances. The benefit to which a participant is entitled is the benefit that can be provided from the participant’s vested account. Vesting Participants are immediately fully vested in both their contributions and ST, Inc. contributions and the earnings thereon. Prior to December 31, 2000, participants vested in ST, Inc. contributions and the earnings thereon 20% after one year of service and vested an additional 20% on each successive service anniversary date, becoming 100% vested after five years of service. Forfeitures under the Plan are generally used to reduce the amount of Employer contributions otherwise due to the Plan. The amounts of unallocated forfeitures at December 31, 2025 and 2024 were $54,641 and $74,929, respectively. Benefit Payments Upon termination of employment, retirement or death, participants or beneficiaries may elect to receive benefit payments in the form of a single lump sum payment equal to the vested value of the participant’s account, or rollover all or part of the vested account balance into an IRA or another qualified plan, as defined in the Plan document. In-service withdrawals of pre-tax and Roth contributions are generally allowed in cases of hardship, defined as an immediate and heavy financial need. Participants may self-certify the need, and withdrawals may also be permitted under certain additional circumstances as allowed by the Plan. Prior plan after-tax and rollover contributions can be withdrawn at any time. Additionally, under certain circumstances relating to plans from previous acquisitions, a participant who has attained 59½ years of age may withdraw all or any portion of the amount credited to their prior plan elective deferral account. At December 31, 2025 and 2024, there were no benefit claims which had been processed and approved for payment but not yet paid. Benefit payments are determined, paid and taxed to participants based upon the date the check is first processed. Administrative Expense (Credit) Participants pay for the administrative expenses of the Plan, except to the extent the Company elects to pay such expenses. Plan administrative expenses, including but not limited to recordkeeping, trustee, audit and consulting fees, may be allocated to participant accounts using a combination of methods, including a per-participant fee and/or a pro rata allocation based on account balances. These expenses are charged to participant accounts periodically throughout the year, as applicable. Loan fees and certain withdrawal transactions are paid by the applicable participant’s accounts. Revenue credits generated by the Plan for certain investment fund options are reallocated back to those Plan participants who invested in those fund options. Any revenue credits attributable to a participant who no longer has an account in the Plan will be used to reduce future Plan expenses. Notes Receivable from Participants The Plan allows for participant loans. A loan made to a Plan participant shall be in an amount that is not less than $1,000 and not more than 50% of the vested interest in the participant’s account up to $50,000. The repayment period for participant loans cannot exceed five years. At December 31, 2025, the loans bear interest in the range of 3.25% to 8.50%. The loans are collateralized by the borrower’s assignment of rights to their available account, as acknowledged by a promissory note. Investment Options Participants of the Plan may allocate contributions among various investment options. Participants may transfer assets between and among funds. Additionally, participants may change the investment allocation of their contributions at any time. The maximum employee contribution to either the STMicroelectronics N.V. Stock Fund or the self-directed brokerage account is set at 25% of eligible contributions.

Plan Description (Details) - EBP 001 - USD ($)	12 Months Ended	156 Months Ended
Plan Description (Details) - EBP 001 - USD ($)	Dec. 31, 2025	Dec. 30, 2000	Dec. 31, 2024
EBP, Description of Plan [Line Items]
Pretax, maximum annual compensation to total compensation, percentage	75.00%
Matching percentage	100.00%
Participant compensation matched, percentage	4.00%
Employer vesting percentage		20.00%
Vesting period		1 year
Employer vesting percentage, total		100.00%
Vesting period, total		5 years
Forfeited nonvested account	$ 54,641		$ 74,929
Minimum borrowing, amount	$ 1,000
Maximum borrowing, to total account, percentage	50.00%
Maximum borrowing, amount	$ 50,000
Note receivable from participant, maximum borrowing term, years	5 years
Common stock or self-directed brokerage account
EBP, Description of Plan [Line Items]
EBP, participant contribution, maximum compensation, percentage	25.00%
Maximum
EBP, Description of Plan [Line Items]
EBP, Employer automatic contribution based on years of service, percentage	3.00%
Interest rate	8.50%
Minimum
EBP, Description of Plan [Line Items]
EBP, Employer automatic contribution based on years of service, percentage	1.00%
Interest rate	3.25%

Summary of Significant Accounting Policies (Policies) - EBP 001	12 Months Ended
	Dec. 31, 2025
EBP, Accounting Policy [Line Items]
Basis of Accounting	Basis of Accounting The accompanying financial statements have been prepared in accordance with accounting principles generally accepted in the United States (GAAP).
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires Plan management to make estimates and assumptions that affect the reported amounts of assets and liabilities and changes therein, and disclosure of contingent assets and liabilities. Actual results could differ from those estimates.
Risks and Uncertainties	Risks and Uncertainties The Plan provides for various investment options of specified registered investment companies, a common collective trust, company stock and a self-directed brokerage account. The underlying investments held by the funds may include stocks, bonds, fixed income securities, mutual funds and other investment securities. Such investments are exposed to various risks and uncertainties, such as interest rate risk, market risk, credit risk, economic changes, political unrest, regulatory changes, foreign currency risk and overall market volatility risk, among others. Due to the level of risk and uncertainty associated with certain investment securities, it is at least reasonably possible that changes in the values of investment securities in the near term could materially affect participant account balances and the amounts reported in the statements of net assets available for plan benefits.
Investment Valuation and Income Recognition	Investment Valuation and Income Recognition Investments are measured at fair value. Fair value is the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. See Note 4 for further discussion of fair value measurements. Purchases and sales of the investments within the Plan are reflected on a trade-date basis. Net appreciation (depreciation) in the fair value of investments includes the Plan’s gains and losses on investments bought and sold as well as held during the year. Dividend income is recorded on the ex-dividend date. Interest income is accrued as earned. The Plan presents in the statement of changes in net assets available for plan benefits the net depreciation or net appreciation in fair value of investments, which consists of the net realized gains or losses and the net unrealized appreciation or depreciation of those investments.
Notes Receivable from Participants	Notes Receivable from Participants Notes receivable from participants are measured at unpaid principal balance plus accrued but unpaid interest, which approximates fair value. Interest income on participant loans is recorded as earned. Delinquent notes are recorded as distributions based on the terms of the Plan document. The Plan does not record an allowance for loan losses, as repayments of principal and interest are received through payroll deductions and the notes are collateralized by the participants’ account balances.
Benefits Payments	Benefit Payments Benefit payments are recorded when paid.
Contributions	Contributions Participant contributions and related employer contributions are recognized during the period in which the respective payroll deductions are made.

- Definition

Disclosure of accounting policy for use of estimate in preparation of financial statement of employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References + Details

Fair Value Measurements

12 Months Ended

Dec. 31, 2025

EBP 001

EBP, Investment, Fair Value and NAV [Line Items]

Fair Value Measurements

GAAP establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to quoted prices in active markets for identical assets and liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are described below:

Basis of Fair Value Measurement

Level 1 – Quoted prices (unadjusted) in active markets for identical assets and liabilities;

Level 2 – Inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly, such as:

a.Quoted prices for similar assets or liabilities in active markets

b.Quoted prices for identical assets or liabilities in inactive markets

c.Inputs other than quoted prices that are observable for the asset or liability

d.Inputs that are derived principally from or corroborated by observable market data by correlation or other means.

If the asset or liability has a specified (contractual) term, the Level 2 input must be observable for substantially the full term of the asset or liability.

Level 3 – Prices or valuations that require inputs that are both significant to the fair value measurement and 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.

The following is a description of the valuation methodologies used for the investments measured at fair value, including the general classification of such instruments pursuant to the valuation hierarchy.

Mutual Funds

The fair market value of the fund is based on its calculated net asset value (NAV) at the close of business of the appropriate exchange, considering the value of the fund assets at that time. The values of the assets are generally based on quoted prices in active markets. The fair market value of the funds is based on the fund’s NAV, which is the price to sell one share of the fund. The NAV is readily available on the appropriate exchange. Mutual funds are classified as Level 1.

Money Market Fund

The Plan holds an investment in the Fidelity Investments Money Market Government Portfolio. The NAV of the fund is valued at amortized cost, which approximates fair value. The amortized cost of an instrument is determined by valuing it at its original cost and thereafter amortizing any discount or premium from its face value at a constant rate until maturity. Securities held by a money market fund are generally high quality and liquid; however, they are reflected as Level 2 because the inputs used to determine fair value are not quoted prices in an active market. The fund normally invests assets in U.S. government securities and repurchase agreements for those securities.

STMicroelectronics N.V. Stock Fund

The STMicroelectronics N.V. Stock Fund is comprised primarily of the stock of the parent company of ST, Inc., as well as short-term investments (interest-bearing cash) designed to allow for purchases and sales without the usual trade settlement period for individual stock transactions. The fair value of the fund is based on the per share price as quoted in an active market and weighted with the amount of cash held to settle daily transactions. The total fair value of the fund is classified as Level 1.

Self-directed Brokerage Account

The BrokerageLink account is a self-directed brokerage account that allows participants to invest in a wide variety of securities. Investments in the BrokerageLink account include common stock, cash reserves, mutual funds, exchange-traded funds, options and preferred stock. These are publicly traded securities with quoted prices in active markets and are classified as Level 1. Other investments include certificates of deposit and corporate bonds which are valued using third-party pricing sources. These assets are classified as Level 2.

Common Collective Trust

The Plan holds an investment in the Columbia Trust Dividend Income Fund Institutional 300 which is a common collective trust (“CCT”). The CCT is valued at the NAV as provided by the administrator of the fund. The NAV is used as the practical expedient to estimate fair value. The NAV is based on the value of the underlying assets of the fund, less liabilities, and then divided by the number of units outstanding. Participants are allowed to redeem units of the CCT held by the Plan on a daily basis and there are no unfunded commitments. The fund seeks to maximize total return, consisting of current income and capital appreciation by primarily investing in U.S and Non-U.S. equity securities and cash.

The preceding methods described may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. Furthermore, although the Plan believes its valuation methods are appropriate and consistent with other market participants, the use of different methodologies and assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement at the reporting date.

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

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

- Definition

The entire disclosure for fair value of investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), including, but not limited to, fair value measured at net asset value per share as practical expedient (NAV).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-3

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-3

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 962
-SubTopic 325
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478873/962-325-55-17

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
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-Section 50
-Paragraph 6A
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 325
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-Section 45
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477509/962-325-45-5

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
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Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
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Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6A-02(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477804/962-205-S99-1

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
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Reference 16: http://www.xbrl.org/2003/role/recommendedDisclosureRef
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Reference 17: http://www.xbrl.org/2003/role/disclosureRef
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-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477509/962-325-45-6

+ Details

Statement of Changes in Net Assets Available for Benefits - EBP 001	12 Months Ended
	Dec. 31, 2025 USD ($)
Investment income:
Net appreciation in fair value of investments	$ 66,889,757
Interest and dividends	25,046,121
Total investment income	91,935,878
Interest on notes receivable from participants	120,066
Contributions:
Participant	13,116,645
Employer	7,518,592
Rollovers	1,460,278
Total contributions	22,095,515
Total additions	114,151,459
Deductions
Benefits paid to participants	79,521,493
Administrative expense, net	350,276
Total deductions	79,871,769
Net increase in net assets available for plan benefits	34,279,690
Net assets available for plan benefits, beginning of year	572,243,774
Net assets available for plan benefits, end of year	$ 606,523,464

Related Party and Party-In-Interest Transactions (Details) - EBP 001 - STMicroelectronics N.V. stock fund - USD ($)	Dec. 31, 2025	Dec. 31, 2024
EBP, Related Party and Party-in-Interest Transactions [Line Items]
EBP, investment, number of shares (in shares)	283,071	311,152
EBP, investment, cost	$ 6,476,290	$ 7,130,504

Summary of Significant Accounting Policies	12 Months Ended
Summary of Significant Accounting Policies	Dec. 31, 2025
EBP 001
EBP, Accounting Policy [Line Items]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Accounting The accompanying financial statements have been prepared in accordance with accounting principles generally accepted in the United States (GAAP). Use of Estimates The preparation of financial statements in conformity with GAAP requires Plan management to make estimates and assumptions that affect the reported amounts of assets and liabilities and changes therein, and disclosure of contingent assets and liabilities. Actual results could differ from those estimates. Risks and Uncertainties The Plan provides for various investment options of specified registered investment companies, a common collective trust, company stock and a self-directed brokerage account. The underlying investments held by the funds may include stocks, bonds, fixed income securities, mutual funds and other investment securities. Such investments are exposed to various risks and uncertainties, such as interest rate risk, market risk, credit risk, economic changes, political unrest, regulatory changes, foreign currency risk and overall market volatility risk, among others. Due to the level of risk and uncertainty associated with certain investment securities, it is at least reasonably possible that changes in the values of investment securities in the near term could materially affect participant account balances and the amounts reported in the statements of net assets available for plan benefits. Investment Valuation and Income Recognition Investments are measured at fair value. Fair value is the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. See Note 4 for further discussion of fair value measurements. Purchases and sales of the investments within the Plan are reflected on a trade-date basis. Net appreciation (depreciation) in the fair value of investments includes the Plan’s gains and losses on investments bought and sold as well as held during the year. Dividend income is recorded on the ex-dividend date. Interest income is accrued as earned. The Plan presents in the statement of changes in net assets available for plan benefits the net depreciation or net appreciation in fair value of investments, which consists of the net realized gains or losses and the net unrealized appreciation or depreciation of those investments. Notes Receivable from Participants Notes receivable from participants are measured at unpaid principal balance plus accrued but unpaid interest, which approximates fair value. Interest income on participant loans is recorded as earned. Delinquent notes are recorded as distributions based on the terms of the Plan document. The Plan does not record an allowance for loan losses, as repayments of principal and interest are received through payroll deductions and the notes are collateralized by the participants’ account balances. Benefit Payments Benefit payments are recorded when paid. Contributions Participant contributions and related employer contributions are recognized during the period in which the respective payroll deductions are made.

Cover	12 Months Ended
Cover	Dec. 31, 2025
Document Information [Line Items]
Amendment Flag	false
Entity Central Index Key	0000932787
Document Type	11-K
Entity Registrant Name	STMicroelectronics N.V.
EBP 001
Document Information [Line Items]
Amendment Flag	false
Entity Central Index Key	0000932787
Document Type	11-K
Entity Registrant Name	STMicroelectronics N.V.

Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2025
EBP 001
EBP, Subsequent Event [Line Items]
Subsequent Events	Subsequent Events The Plan’s Management has evaluated subsequent events through the date on which the financial statements were issued and determined that no significant subsequent events have occurred requiring adjustments to the financial statements or disclosures.

Concentrations of Credit Risk	12 Months Ended
Concentrations of Credit Risk	Dec. 31, 2025
EBP 001
EBP, Risk and Uncertainty [Line Items]
Concentrations of Credit Risk	Concentrations of Credit Risk Each investment fund is diversified through a portfolio containing a wide variety of investments that fit the particular investment strategy and targeted composition. Further diversification is available to participants through participation in more than one fund. The quality of investments held in the fund portfolio reflects the expertise of the fund managers.

Plan Termination (Details)	12 Months Ended
Plan Termination (Details)	Dec. 31, 2025
EBP 001
EBP, Plan Termination [Line Items]
EBP, employer contribution, plan termination, vesting percentage	100.00%