STMicroelectronics N.V.

ST Supplemental Non-U.S. GAAP Financial Information

U.S. GAAP – Non-U.S. GAAP Reconciliation

The supplemental non-U.S. GAAP information presented in this press release is unaudited and subject to inherent

limitations. Such non-U.S. GAAP information is not based on any comprehensive set of accounting rules or principles and

should not be considered as a substitute for U.S. GAAP measures. Also, our supplemental non-U.S. GAAP financial

information may not be comparable to similarly titled non-U.S. GAAP measures used by other companies. Further,

specific limitations for individual non-U.S. GAAP measures, and the reasons for presenting non-U.S. GAAP financial

information, are set forth in the paragraphs below. To compensate for these limitations, the supplemental non-U.S. GAAP

financial information should not be read in isolation, but only in conjunction with our consolidated financial statements

prepared in accordance with U.S. GAAP.

ST believes that these non-U.S. GAAP financial measures provide useful information for investors and management

because they offer, when read in conjunction with ST’s U.S. GAAP financials, (i) the ability to make more meaningful

period-to-period comparisons of ST’s on-going operating results, (ii) the ability to better identify trends in ST’s business

and perform related trend analysis, and (iii) to facilitate a comparison of ST’s results of operations against investor and

analyst financial models and valuations, which may exclude these items.

Non-U.S. GAAP Gross Profit, Non-U.S. GAAP Operating Income, Non-U.S. GAAP Net Income and Non-U.S. GAAP

Diluted Earnings Per Share (non-U.S. GAAP measures)

Operating income before impairment, restructuring charges and other related phase-out costs, and other certain items, is

used by management to help enhance an understanding of ongoing operations and to communicate the impact of the

excluded items, such as impairment, restructuring charges and other related phase-out costs, and PPA effects. Non-U.S.

GAAP gross profit is also used by management to communicate the impact of PPA effects on gross margin. Adjusted net

earnings and earnings per share (EPS) are used by management to help enhance an understanding of ongoing

operations and to communicate the impact of the excluded items like impairment, restructuring charges and other related

phase-out costs and other certain items, such as PPA effects, net of the relevant tax impact.

Net Financial Position and Adjusted Net Financial Position (non-U.S. GAAP measures)

Net Financial Position, a non-U.S. GAAP measure, represents the difference between our total liquidity and our total

financial debt. Our total liquidity includes cash and cash equivalents, restricted cash, if any, short-term deposits, and

marketable securities, and our total financial debt includes short-term debt and long-term debt, as reported in our

Consolidated Balance Sheets. ST also presents adjusted net financial position as a non-U.S. GAAP measure, to take into

consideration the effect on total liquidity of advances received on capital grants for which capital expenditures have not

been incurred yet.

ST believes its Net Financial Position and Adjusted Net Financial Position provide useful information for investors and

management because they give evidence of our global position either in terms of net indebtedness or net cash by

measuring our capital resources based on cash and cash equivalents, restricted cash, if any, short-term deposits and

marketable securities and the total level of our financial debt. Our definitions of Net Financial Position and Adjusted Net

Financial Position may differ from definitions used by other companies, and therefore, comparability may be limited.

(a)Long-term debt contains standard conditions but does not impose minimum financial ratios. Committed credit facilities for $1,198 million equivalent

are currently undrawn.

(b)During Q326 ST net settled its convertible bond due 2027 delivering $750 million in cash and about 4.2 million shares from treasury stock. Q226

short-term debt includes $750 million after the announcement of the early redemption of the convertible bonds due 2027.

Net Capex and Free Cash Flow (non-U.S. GAAP measures)

ST presents Net Capex as a non-U.S. GAAP measure, which is reported as part of our Free Cash Flow (non-U.S. GAAP

measure), to take into consideration the effect of advances from capital grants received on prior periods allocated to

property, plant and equipment in the reporting period.

Net Capex, a non-U.S. GAAP measure, is defined as (i) Payment for purchase of tangible assets, as reported plus (ii)

Proceeds from sale of tangible assets, as reported plus (iii) Proceeds from capital grants and other contributions, as

reported plus (iv) Advances from capital grants allocated to property, plant and equipment in the reporting period.

ST believes Net Capex provides useful information for investors and management because annual capital expenditures

budget includes the effect of capital grants. Our definition of Net Capex may differ from definitions used by other

companies, and therefore, comparability may be limited.

Free Cash Flow, which is a non-U.S. GAAP measure, is defined as (i) net cash from operating activities plus (ii) Net

Capex plus (iii) payment for purchase (and proceeds from sale) of intangible and financial assets and (iv) net cash paid

for business acquisitions, if any.

ST believes Free Cash Flow provides useful information for investors and management because it measures our capacity

to generate cash from our operating and investing activities to sustain our operations.

Free Cash Flow reconciles with the total cash flow and the net cash increase (decrease) by including the payment for

purchases of (and proceeds from matured) marketable securities and net investment in (and proceeds from) short-term

deposits, the net cash from (used in) financing activities and the effect of changes in exchange rates, and by excluding the

advances from capital grants received on prior periods allocated to property, plant and equipment in the reporting period.

Our definition of Free Cash Flow may differ from definitions used by other companies, and therefore, comparability may

be limited.

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(a)Q126 Free cash flow includes $895 million cash-out related to the acquisition of NXP MEMS sensor business.