STMicroelectronics Reports Q3 2026 Financial Results

PR No: C3419C

STMic oelect o ics Repo ts Q3 2026 Fi a cial Results

• Q326 et eve ues at $3.76 billio
• G oss ma gi at 37.3%
• Ope ati g i come at $367 millio ( o -U.S. GAAP¹ ope ati g i come at $429 millio )
• Busi ess outlook at mid-poi t: Q426 et eve ues of $4.15 billio a d g oss ma gi of 39.0%

Ge eva, Octobe 29, 2026 – STMic oelect o ics N.V. (“ST”) (NYSE: STM), a global semico ducto leade se vi g custome s ac oss the spect um of elect o ics applicatio s, epo ted U.S. GAAP fi a cial esults fo the thi d qua te e ded Septembe 26, 2026. This p ess elease also co tai s o -U.S. GAAP measu es (see Appe dix fo additio al i fo matio ).

ST epo ted thi d qua te et eve ues of $3.76 billio , g oss ma gi of 37.3%, ope ati g i come of $367 millio , a d et i come of $291 millio o $0.31 diluted ea i gs pe sha e ( o -U.S. GAAP¹ ope ati g i come of $429 millio , a d o -U.S. GAAP¹ et i come of $344 millio o $0.37 diluted ea i gs pe sha e).

Jea -Ma c Che y, ST P eside t & CEO, comme ted:

• “Q3 et eve ues came above the mid-poi t of ou busi ess outlook a ge, d ive by highe eve ues i CECP a d Pe so al Elect o ics. G oss ma gi was above the mid-poi t of ou busi ess outlook a ge.”
• “O a yea -ove -yea basis, Q3 et eve ues i c eased 17.9%. Q3 g oss ma gi was 37.3%, ope ati g ma gi was 9.8% a d et i come was $291 millio . O a o -U.S. GAAP¹ basis ope ati g ma gi was 11.4% a d et i come was $344 millio .”
• “Du i g the qua te , dema d i c eased fu the suppo ted by st o g booki gs a d imp ovi g visibility, while i ve to y i dist ibutio co ti ued to t ack below ou sta da d ta get. Togethe , these i dicato s co fi m the co ti ued o goi g ecove y a d secula g owth ac oss the ma kets we se ve.”
• “Ou fou th qua te busi ess outlook, at the mid-poi t, is fo et eve ues of $4.15 billio , i c easi g about 10.5% seque tially a d about 24.7% yea -ove -yea . G oss ma gi is expected to be about 39.0%, i cludi g about 40 basis poi ts of u used capacity cha ges.”
• “The mid-poi t of this outlook t a slates i to full yea 2026 eve ues of about $14.5 billio , ep ese ti g a 22.8% yea -ove -yea i c ease. Beyo d the cyclical ecove y ac oss ou e d ma kets, the yea -ove -yea g owth is suppo ted by ST’s compa y specific g owth d ive s, i cludi g AI datace te s a d LEO satellite commu icatio . G oss ma gi is expected to be about 36.4%, o -U.S. GAAP¹ g oss ma gi is expected to be about 36.6%, ep ese ti g a imp oveme t of 270 basis poi ts ve sus FY25.”
• “I a e vi o me t whe e dema d emai s well above supply, we co ti ue to expa d capacity alig ed with ST’s st ategic oadmap. We emai focused o imp ovi g p ofitability co siste t with ou i te mediate fi a cial model. This is d ive by ou compa y-specific g owth d ive s a d the executio of ou compa y-wide p og am to eshape ou ma ufactu i g footp i t a d esize ou global cost base.”

Qua te ly Fi a cial Summa y

Thi d Qua te 2026 Summa y Review

Net eve ues totaled $3.76 billio , ep ese ti g a yea -ove -yea i c ease of 17.9%. Yea -ove -yea et sales to OEMs a d Dist ibutio i c eased 10.2% a d 38.8%, espectively. O a seque tial basis, et eve ues i c eased 7.7%, 150 basis poi ts bette tha the mid-poi t of ST’s guida ce.

G oss p ofit totaled $1.40 billio , ep ese ti g a yea -ove -yea i c ease of 32.2%. G oss ma gi of 37.3%, i c eased 410 basis poi ts yea -ove -yea , mai ly due to lowe u used capacity cha ges a d bette p oduct mix.

Ope ati g i come i c eased f om $180 millio i the yea -ago qua te to $367 millio . ST’s ope ati g ma gi i c eased o a yea -ove -yea basis to 9.8% of et eve ues, compa ed to 5.6% i the thi d qua te of 2025. Ope ati g i come i cluded $55 millio impai me t, est uctu i g cha ges a d othe elated phase-out costs fo the qua te , mai ly eflecti g cha ges elated to the executio of ou compa y-wide p og am to eshape ou ma ufactu i g footp i t a d esize ou global cost base a d $7 millio pu chase p ice allocatio (PPA) effects f om the acquisitio of NXP’s MEMS se so busi ess. Excludi g these items, o -U.S. GAAP¹ Ope ati g i come stood at $429 millio i the thi d qua te (o 11.4% o -U.S. GAAP¹ ope ati g ma gi ).

By epo table segme t, compa ed with the yea -ago qua te :

I A alog, Powe & Disc ete, MEMS a d Se so s (APMS) P oduct G oup:

A alog p oducts, MEMS a d Se so s (AM&S)² segme t:

• Reve ue i c eased 8.8% mai ly due to MEMS a d, to a lesse exte t, A alog a d Imagi g.   
• Ope ati g p ofit dec eased by 0.6% to $219 millio . Ope ati g ma gi was 14.1% compa ed to 15.4%.

Powe a d Disc ete p oducts (P&D) segme t:

• Reve ue i c eased 11.3%.
• Ope ati g esults dec eased f om a loss of $67 millio to a loss of $81 millio . Ope ati g ma gi was -17.1% compa ed to -15.6%.

I Mic oco t olle s, Digital ICs a d RF p oducts (MDRF) P oduct G oup:

Embedded P ocessi g (EMP) segme t:

• Reve ue i c eased 24.1% mai ly due to Ge e al Pu pose MCU.
• Ope ati g p ofit i c eased by 74.2% to $280 millio . Ope ati g ma gi was 23.1% compa ed to 16.5%.

RF Optical Commu icatio s (RFOC) segme t:

• Reve ue i c eased 46.2%.
• Ope ati g p ofit i c eased by 131.2% to $132 millio . Ope ati g ma gi was 26.2% compa ed to 16.6%.

Net i come a d diluted Ea i gs Pe Sha e i c eased to $291 millio a d $0.31 espectively, compa ed to $237 millio a d $0.26 espectively i the yea -ago qua te . I the thi d qua te of 2026 o -U.S. GAAP¹ Net i come stood at $344 millio a d o -U.S. GAAP¹ diluted Ea i gs Pe Sha e stood at $0.37.

Cash Flow a d Bala ce Sheet Highlights

Net cash f om ope ati g activities was $1.02 billio i the thi d qua te compa ed to $549 millio i the yea -ago qua te .

Net Capex ( o -U.S. GAAP¹), was $643 millio i the thi d qua te compa ed to $401 millio i the yea -ago qua te .F ee cash flow ( o -U.S. GAAP¹) was positive at $351 millio i the thi d qua te compa ed to positive $130 millio i the yea -ago qua te .

I ve to y at the e d of the thi d qua te was $3.25 billio , compa ed to $3.19 billio i the p evious qua te a d $3.17 billio i the yea -ago qua te . Days sales of i ve to y at qua te -e d was 126 days, same as the p evious qua te a d compa ed to 135 days fo the yea -ago qua te .

I the thi d qua te , ST paid cash divide ds to its stockholde s totali g $83 millio a d executed a $91 millio sha e buyback, as pa t of its cu e t sha e epu chase p og am.

ST’s et fi a cial positio ( o -U.S. GAAP³) emai ed st o g at $2.11 billio as of Septembe 26, 2026, compa ed to $2.01 billio as of Ju e 27, 2026, a d eflected total liquidity of $5.31 billio a d total fi a cial debt of $3.21 billio . Adjusted et fi a cial positio ( o -U.S. GAAP¹), taki g i to co side atio the effect o total liquidity of adva ces f om capital g a ts fo which capital expe ditu es have ot bee i cu ed yet, stood at $1.81 billio as of Septembe 26, 2026.

Followi g the exe cise of the call optio fo the ea ly edemptio of ST’s co ve tible debt due i 2027, bo dholde s exe cised thei co ve sio ights o the total of $750 millio co ve tible bo ds. ST settled the bo d o a et-sha e basis, delive i g $750 millio i cash a d about 4.2 millio sha es f om t easu y stock.

Busi ess Outlook

ST’s guida ce, at the mid-poi t, fo the 2026 fou th qua te is:

• Net eve ues a e expected to be $4.15 billio , a i c ease of 10.5% seque tially, plus o mi us 350 basis poi ts.
• G oss ma gi of 39.0%, plus o mi us 200 basis poi ts.
• This outlook is based o a assumed effective cu e cy excha ge ate of app oximately $1.14 = €1.00 fo the 2026 fou th qua te a d i cludes the impact of existi g hedgi g co t acts.
• The fou th qua te will close o Decembe 31, 2026.

This busi ess outlook does ot i clude a y impact of pote tial fu the cha ges to global t ade ta iffs compa ed to the cu e t situatio .

Co fe e ce Call a d Webcast I fo matio

ST will co duct a co fe e ce call with a alysts, i vesto s a d epo te s to discuss its thi d qua te 2026 fi a cial esults a d cu e t busi ess outlook today at 9:30 a.m. Ce t al Eu opea Time (CET) / 3:30 a.m. U.S. Easte Time (ET). A live webcast (liste -o ly mode) of the co fe e ce call will be accessible at ST’s website, https://i vesto s.st.com, a d will be available fo eplay u til Novembe 13, 2026.

Use of Suppleme tal No -U.S. GAAP Fi a cial I fo matio

This p ess elease co tai s suppleme tal o -U.S. GAAP fi a cial i fo matio .

Reade s a e cautio ed that these measu es a e u audited a d ot p epa ed i acco da ce with U.S. GAAP a d should ot be co side ed as a substitute fo U.S. GAAP fi a cial measu es. I additio , such o -U.S. GAAP fi a cial measu es may ot be compa able to simila ly titled i fo matio f om othe compa ies. To compe sate fo these limitatio s, the suppleme tal o -U.S. GAAP fi a cial i fo matio should ot be ead i isolatio , but o ly i co ju ctio with ST’s co solidated fi a cial stateme ts p epa ed i acco da ce with U.S. GAAP.

See the Appe dix of this p ess elease fo a eco ciliatio of ST’s o -U.S. GAAP fi a cial measu es to thei co espo di g U.S. GAAP fi a cial measu es.

Fo wa d-looki g I fo matio

Some of the stateme ts co tai ed i this elease that a e ot histo ical facts a e stateme ts of futu e expectatio s a d othe fo wa d-looki g stateme ts (withi the mea i g of Sectio 27A of the Secu ities Act of 1933 o Sectio 21E of the Secu ities Excha ge Act of 1934, each as ame ded) that a e based o ma ageme t’s cu e t views a d assumptio s, a d a e co ditio ed upo a d also i volve k ow a d u k ow isks a d u ce tai ties that could cause actual esults, pe fo ma ce o eve ts to diffe mate ially f om those a ticipated by such stateme ts due to, amo g othe facto s:

• cha ges i global t ade policies, i cludi g the co ti uatio , adoptio a d expa sio of ta iffs a d t ade ba ie s a d sa ctio s, that a e affecti g a d could fu the affect the mac o-eco omic e vi o me t a d a e adve sely impacti g a d could fu the adve sely impact the dema d fo ou p oducts;
• u ce tai mac o-eco omic a d i dust y t e ds (such as i flatio a d fluctuatio s i supply chai s), which a e impacti g a d may fu the impact p oductio capacity a d e d-ma ket dema d fo ou p oducts;
• custome dema d that diffe s f om p ojectio s which may equi e us to u de take t a sfo matio measu es that may ot be successful i ealizi g the expected be efits i full o at all;
• the ability to desig , ma ufactu e a d sell i ovative p oducts i a apidly cha gi g tech ological e vi o me t;
• cha ges i eco omic, social, public health, labo , political, o i f ast uctu e co ditio s i the locatio s whe e we, ou custome s, o ou supplie s ope ate, i cludi g as a esult of mac o-eco omic o egio al eve ts, geopolitical a d milita y co flicts, social u est, labo actio s, o te o ist activities;
• u a ticipated eve ts o ci cumsta ces, which may impact ou ability to execute ou pla s a d/o meet the objectives of ou esea ch a d developme t a d ma ufactu i g p og ams, which be efit f om public fu di g;
• fi a cial difficulties with a y of ou majo dist ibuto s o sig ifica t cu tailme t of pu chases by key custome s;
• the loadi g, p oduct mix, a d ma ufactu i g pe fo ma ce of ou p oductio facilities a d/o ou equi ed volume to fulfill capacity ese ved with supplie s o thi d-pa ty ma ufactu i g p ovide s;
• availability a d costs of equipme t, aw mate ials, utilities, thi d-pa ty ma ufactu i g se vices a d tech ology, o othe supplies equi ed by ou ope atio s (i cludi g i c easi g costs esulti g f om i flatio );
• the fu ctio alities a d pe fo ma ce of ou IT systems, which a e subject to cybe secu ity th eats a d which suppo t ou c itical ope atio al activities i cludi g ma ufactu i g, fi a ce a d sales, a d a y b eaches of ou IT systems o those of ou custome s, supplie s, pa t e s a d p ovide s of thi d-pa ty lice sed tech ology;
• theft, loss, o misuse of pe so al data about ou employees, custome s, o othe thi d pa ties, a d b eaches of data p ivacy legislatio ;
• the impact of i tellectual p ope ty claims by ou competito s o othe thi d pa ties, a d ou ability to obtai equi ed lice ses o easo able te ms a d co ditio s;
• cha ges i ou ove all tax positio as a esult of cha ges i tax ules, ew o evised legislatio , the outcome of tax audits o cha ges i i te atio al tax t eaties which may impact ou esults of ope atio s as well as ou ability to accu ately estimate tax c edits, be efits, deductio s a d p ovisio s a d to ealize defe ed tax assets;
• va iatio s i the fo eig excha ge ma kets a d, mo e pa ticula ly, the U.S. dolla excha ge ate as compa ed to the Eu o a d the othe majo cu e cies we use fo ou ope atio s;
• the outcome of o goi g litigatio as well as the impact of a y ew litigatio to which we may become a defe da t;
• p oduct liability o wa a ty claims, claims based o epidemic o delive y failu e, o othe claims elati g to ou p oducts, o ecalls by ou custome s fo p oducts co tai i g ou pa ts;
• atu al eve ts such as seve e weathe , ea thquakes, tsu amis, volca o e uptio s o othe acts of atu e, the effects of climate cha ge, health isks a d epidemics o pa demics i locatio s whe e we, ou custome s o ou supplie s ope ate;
• i c eased egulatio a d i itiatives i ou i dust y, i cludi g those co ce i g climate cha ge a d sustai ability matte s a d ou goal to become ca bo eut al i all di ect a d i di ect emissio s (scopes 1 a d 2), p oduct t a spo tatio , busi ess t avel, a d employee commuti g emissio s (ou scope 3 focus), a d to achieve ou 100% e ewable elect icity sou ci g goal by the e d of 2027;
• epidemics o pa demics, which may egatively impact the global eco omy i a sig ifica t ma e fo a exte ded pe iod of time, a d could also mate ially adve sely affect ou busi ess a d ope ati g esults;
• i dust y cha ges esulti g f om ve tical a d ho izo tal co solidatio amo g ou supplie s, competito s, a d custome s;
• the ability to successfully amp up ew p og ams that could be impacted by facto s beyo d ou co t ol, i cludi g the availability of c itical thi d-pa ty compo e ts a d pe fo ma ce of subco t acto s i li e with ou expectatio s; a d
• i dividual custome use of ce tai p oducts, which may diffe f om the a ticipated uses of such p oducts a d esult i diffe e ces i pe fo ma ce, i cludi g e e gy co sumptio , may lead to a failu e to achieve ou disclosed emissio – eductio goals, adve se legal actio o additio al esea ch costs.

Such fo wa d-looki g stateme ts a e subject to va ious isks a d u ce tai ties, which may cause actual esults a d pe fo ma ce of ou busi ess to diffe mate ially a d adve sely f om the fo wa d-looki g stateme ts. Ce tai fo wa d-looki g stateme ts ca be ide tified by the use of fo wa d-looki g te mi ology, such as “believes”, “expects”, “may”, “a e expected to”, “should”, “would be”, “seeks” o “a ticipates” o simila exp essio s o the egative the eof o othe va iatio s the eof o compa able te mi ology, o by discussio s of st ategy, pla s o i te tio s.

Some of these isk facto s a e set fo th a d a e discussed i mo e detail i “Item 3. Key I fo matio — Risk Facto s” i cluded i ou A ual Repo t o Fo m 20-F fo the yea e ded Decembe 31, 2025 as filed with the Secu ities a d Excha ge Commissio (“SEC”) o Feb ua y 26, 2026. Should o e o mo e of these isks o u ce tai ties mate ialize, o should u de lyi g assumptio s p ove i co ect, actual esults may va y mate ially f om those desc ibed i this p ess elease as a ticipated, believed o expected. We do ot i te d, a d do ot assume a y obligatio , to update a y i dust y i fo matio o fo wa d-looki g stateme ts set fo th i this elease to eflect subseque t eve ts o ci cumsta ces.

U favo able cha ges i the above o othe facto s listed u de “Item 3. Key I fo matio — Risk Facto s” f om time to time i ou SEC fili gs, could have a mate ial adve se effect o ou busi ess a d/o fi a cial co ditio .

About STMic oelect o ics

At ST, we a e 49,000 c eato s a d make s of semico ducto tech ologies maste i g the semico ducto supply chai with state-of-the-a t ma ufactu i g facilities. A i teg ated device ma ufactu e , we wo k with mo e tha 200,000 custome s a d thousa ds of pa t e s to desig a d build p oducts, solutio s, a d ecosystems that add ess thei challe ges a d oppo tu ities, a d the eed to suppo t a mo e sustai able wo ld. Ou tech ologies e able sma te mobility, mo e efficie t powe a d e e gy ma ageme t, a d the wide-scale deployme t of cloudco ected auto omous thi gs. We a e o t ack to be ca bo eut al i all di ect a d i di ect emissio s (scopes 1 a d 2), p oduct t a spo tatio , busi ess t avel, a d employee commuti g emissio s (ou scope 3 focus), a d to achieve ou 100% e ewable elect icity sou ci g goal by the e d of 2027. Fu the i fo matio ca be fou d at www.st.com.

Fo fu the i fo matio , please co tact:

INVESTOR RELATIONS:Jé ôme RamelEVP Co po ate Developme t & I teg ated Exte al Commu icatio Tel: +41 22 929 59 20 je ome. amel@st.com

MEDIA RELATIONS:Alexis B eto Co po ate Exte al Commu icatio sTel: + 33 6 59 16 79 08alexis.b eto @st.com

Appe dixST Suppleme tal Fi a cial I fo matio

(a)   Net eve ues of Othe s i clude eve ues f om sales of assembly se vices a d othe eve ues. Ope ati g i come (loss) of Othe s i clude items such as u used capacity cha ges, i cludi g i cide ts leadi g to powe outage, impai me t, est uctu i g cha ges a d othe elated phase-out costs, ma ageme t eo ga izatio costs, sta t-up costs, a d othe u allocated i come (expe ses) such as: st ategic o special esea ch a d developme t p og ams, ce tai co po ate-level ope ati g expe ses, pate t claims a d litigatio s, a d othe costs that a e ot allocated to epo table segme ts, ope ati g ea i gs of othe p oducts as well as PPA effects f om the acquisitio of NXP’s MEMS se so busi ess. With additio al cost eleme ts i cluded i the table below:

(Appe dix – co ti ued)

ST Suppleme tal No -U.S. GAAP Fi a cial I fo matio U.S. GAAP – No -U.S. GAAP Reco ciliatio

The suppleme tal o -U.S. GAAP i fo matio p ese ted i this p ess elease is u audited a d subject to i he e t limitatio s. Such o -U.S. GAAP i fo matio is ot based o a y comp ehe sive set of accou ti g ules o p i ciples a d should ot be co side ed as a substitute fo U.S. GAAP measu es. Also, ou suppleme tal o -U.S. GAAP fi a cial i fo matio may ot be compa able to simila ly titled o -U.S. GAAP measu es used by othe compa ies. Fu the , specific limitatio s fo i dividual o -U.S. GAAP measu es, a d the easo s fo p ese ti g o -U.S. GAAP fi a cial i fo matio , a e set fo th i the pa ag aphs below. To compe sate fo these limitatio s, the suppleme tal o -U.S. GAAP fi a cial i fo matio should ot be ead i isolatio , but o ly i co ju ctio with ou co solidated fi a cial stateme ts p epa ed i acco da ce with U.S. GAAP.

ST believes that these o -U.S. GAAP fi a cial measu es p ovide useful i fo matio fo i vesto s a d ma ageme t because they offe , whe ead i co ju ctio with ST’s U.S. GAAP fi a cials, (i) the ability to make mo e mea i gful pe iod-to-pe iod compa iso s of ST’s o -goi g ope ati g esults, (ii) the ability to bette ide tify t e ds i ST’s busi ess a d pe fo m elated t e d a alysis, a d (iii) to facilitate a compa iso of ST’s esults of ope atio s agai st i vesto a d a alyst fi a cial models a d valuatio s, which may exclude these items.

No -U.S. GAAP G oss P ofit, No -U.S. GAAP Ope ati g I come, No -U.S. GAAP Net I come a d No -U.S. GAAP Diluted Ea i gs Pe Sha e ( o -U.S. GAAP measu es)

Ope ati g i come befo e impai me t, est uctu i g cha ges a d othe elated phase-out costs, a d othe ce tai items, is used by ma ageme t to help e ha ce a u de sta di g of o goi g ope atio s a d to commu icate the impact of the excluded items, such as impai me t, est uctu i g cha ges a d othe elated phase-out costs, a d PPA effects. No -U.S. GAAP g oss p ofit is also used by ma ageme t to commu icate the impact of PPA effects o g oss ma gi . Adjusted et ea i gs a d ea i gs pe sha e (EPS) a e used by ma ageme t to help e ha ce a u de sta di g of o goi g ope atio s a d to commu icate the impact of the excluded items like impai me t, est uctu i g cha ges a d othe elated phase-out costs a d othe ce tai items, such as PPA effects, et of the eleva t tax impact.

(Appe dix – co ti ued)

Net Fi a cial Positio a d Adjusted Net Fi a cial Positio ( o -U.S. GAAP measu es)

Net Fi a cial Positio , a o -U.S. GAAP measu e, ep ese ts the diffe e ce betwee ou total liquidity a d ou total fi a cial debt. Ou total liquidity i cludes cash a d cash equivale ts, est icted cash, if a y, sho t-te m deposits, a d ma ketable secu ities, a d ou total fi a cial debt i cludes sho t-te m debt a d lo g-te m debt, as epo ted i ou Co solidated Bala ce Sheets. ST also p ese ts adjusted et fi a cial positio as a o -U.S. GAAP measu e, to take i to co side atio the effect o total liquidity of adva ces eceived o capital g a ts fo which capital expe ditu es have ot bee i cu ed yet.

ST believes its Net Fi a cial Positio a d Adjusted Net Fi a cial Positio p ovide useful i fo matio fo i vesto s a d ma ageme t because they give evide ce of ou global positio eithe i te ms of et i debted ess o et cash by measu i g ou capital esou ces based o cash a d cash equivale ts, est icted cash, if a y, sho t-te m deposits a d ma ketable secu ities a d the total level of ou fi a cial debt. Ou defi itio s of Net Fi a cial Positio a d Adjusted Net Fi a cial Positio may diffe f om defi itio s used by othe compa ies, a d the efo e, compa ability may be limited.

^(a)  Lo g-te m debt co tai s sta da d co ditio s but does ot impose mi imum fi a cial atios. Committed c edit facilities fo $1,198 millio equivale t a e cu e tly u d aw .^(b)  Du i g Q326 ST et settled its co ve tible bo d due 2027 delive i g $750 millio i cash a d about 4.2 millio sha es f om t easu y stock. Q226 sho t-te m debt i cludes $750 millio afte the a ou ceme t of the ea ly edemptio of the co ve tible bo ds due 2027.

(Appe dix – co ti ued)

Net Capex a d F ee Cash Flow ( o -U.S. GAAP measu es)

ST p ese ts Net Capex as a o -U.S. GAAP measu e, which is epo ted as pa t of ou F ee Cash Flow ( o -U.S. GAAP measu e), to take i to co side atio the effect of adva ces f om capital g a ts eceived o p io pe iods allocated to p ope ty, pla t a d equipme t i the epo ti g pe iod.

Net Capex, a o -U.S. GAAP measu e, is defi ed as (i) Payme t fo pu chase of ta gible assets, as epo ted plus (ii) P oceeds f om sale of ta gible assets, as epo ted plus (iii) P oceeds f om capital g a ts a d othe co t ibutio s, as epo ted plus (iv) Adva ces f om capital g a ts allocated to p ope ty, pla t a d equipme t i the epo ti g pe iod.

ST believes Net Capex p ovides useful i fo matio fo i vesto s a d ma ageme t because a ual capital expe ditu es budget i cludes the effect of capital g a ts. Ou defi itio of Net Capex may diffe f om defi itio s used by othe compa ies, a d the efo e, compa ability may be limited.

F ee Cash Flow, which is a o -U.S. GAAP measu e, is defi ed as (i) et cash f om ope ati g activities plus (ii) Net Capex plus (iii) payme t fo pu chase (a d p oceeds f om sale) of i ta gible a d fi a cial assets a d (iv) et cash paid fo busi ess acquisitio s, if a y.

ST believes F ee Cash Flow p ovides useful i fo matio fo i vesto s a d ma ageme t because it measu es ou capacity to ge e ate cash f om ou ope ati g a d i vesti g activities to sustai ou ope atio s.

F ee Cash Flow eco ciles with the total cash flow a d the et cash i c ease (dec ease) by i cludi g the payme t fo pu chases of (a d p oceeds f om matu ed) ma ketable secu ities a d et i vestme t i (a d p oceeds f om) sho t-te m deposits, the et cash f om (used i ) fi a ci g activities a d the effect of cha ges i excha ge ates, a d by excludi g the adva ces f om capital g a ts eceived o p io pe iods allocated to p ope ty, pla t a d equipme t i the epo ti g pe iod. Ou defi itio of F ee Cash Flow may diffe f om defi itio s used by othe compa ies, a d the efo e, compa ability may be limited.

^(a)   Q126 F ee cash flow i cludes $895 millio cash-out elated to the acquisitio of NXP MEMS se so busi ess.

(Appe dix – co ti ued)

Fi a cial Cale da

The fi a cial cale da fo the emai i g of 2026 is as follows:

Decembe 16, 2026 – Ja ua y 28, 2027                 Quiet pe iod

Ja ua y 28, 2027                                 Q4 2026 Fi a cial Results

The fi a cial cale da fo 2027 is as follows:

Ma ch 16, 2027 – Ap il 22, 2027                         Quiet pe iod

Ap il 22, 2027                                         Q1 2027 Fi a cial Results

Ju e 16, 2027 – July 22, 2027                         Quiet pe iod

July 22, 2027                                         Q2 2027 Fi a cial Results

Septembe 16, 2027 – Octobe 21, 2027                 Quiet pe iod

Octobe 21, 2027                                 Q3 2027 Fi a cial Results

These dates a e p elimi a y a d a e subject to fi al co fi matio .

¹ No -U.S. GAAP. See Appe dix fo eco ciliatio to U.S. GAAP a d i fo matio explai i g why the Compa y believes these measu es a e impo ta t.¹ No -U.S. GAAP. See Appe dix fo eco ciliatio to U.S. GAAP a d i fo matio explai i g why the Compa y believes these measu es a e impo ta t.² Q326 A alog p oducts, MEMS a d Se so s (AM&S) segme t i cluded eve ues associated with NXP’s MEMS se so busi ess.

³ No -U.S. GAAP. See Appe dix fo eco ciliatio to U.S. GAAP a d i fo matio explai i g why the Compa y believes these measu es a e impo ta t.² Q126 F ee cash flow i cludes $895 millio cash-out elated to the acquisitio of NXP MEMS se so busi ess.

Attachme t

• C3419C – ST – Q326 Ea i gs PR – 29oct2026