CHRISTINA SPADE EVP and CFO, CBS Corporation BOB BAKISH President and CEO, Viacom JOE IANNIELLO President and Acting CEO, CBS Corporation Keep? AUGUST 13, 2019 Filed by Viacom Inc. Pursuant to Rule 425 under the Securities Act of 1933, as amended and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934, as amended Subject Company: Viacom Inc. Commission File No.: 001-32686 DexIeScCuLtiAveI MofEfiRce Irms, pinocrtlaundti nIngf ao rdmesactiroipnt iAonb oouft tthheei rT drairnescatc itniotenr easntds, Wbyh seerec uTroit yF ihnodl dIitn Igns c oorn ontehcetriowni swe,i tihs cthoen tparionpeods iend Vtriaancsoamct’iso Fno, rCmB 1S0 a-nKd fVoria tchoem fi swcialll yfielear w eintdhe tdh eS Sepetceumribtieers 3a0n,d 2 E0x1c8h aanndg eit sC pormoxmyi ssstiaotenm (“eSnEt fCil”e)d a o rne gJiasntruaatriyo n2 5st,a 2te0m19e,n bt ootnh Foof rwmh Sic-h4 athrea tf iwleidll winicthlu tdhee aS jEoCin.t A co mnsoernet c soomlipcilteattei odne ssctaritpetmioenn ta nodf CinBfoSr manadt iVonia rceogmar danindg t hdairte wctiollr sa lasnod c eoxnesctiututitvee a o pffriocsepres cwtuisll obfe C inBcSlu. d CedB iSn atnhde Vreigaicsotrmat imona ys taaltseom feilnet ootnh eFro drmoc uSm-4e onrts o wthiethr dthoec uSmEeCn rtse gfialreddi nwgi tth et hper oSpEoCse wd htreann tshaecyti obne.c oTmheis a dvoaciluambleen. tT ihs ensoet dao scuubmsteintutste ( wfohr etnh ea vjoaiinlat bcloen) smenaty s boeli coibtatationned s tfarteeem oefn cth/parrogsep fercotmus tohre rSeEgiCst’rsa wtioenb ssittaet eamt wenwt wo.rs eacn.yg ovth. eNr od oOcfufemr eonrt Swohliicihta CtiBonS Tohr iVs icaocmomm umnaicya ftiiloen w isit fho trh ien fSoErmC.a tIioNnValE pSuTrOpoRsSes A oNnlDy aSnEdC iUs RnoITt iYn tHenOdLedD tEoR aSn dO dFo CesB nSo tA cNonDs tVitIuAteC aOn Mof fAerR tEo UsuRbGscEriDbe T fOor ,R bEuAy Dor T sHelEl, oRrE tGheI SsTolRicAitTaItiOoNn oSfT aAnT oEffMerE tNo Ts,u WbscHrIibCeH f oWr, IbLuLy IoNr CseLlUl, DorE a Tn HinEv iJtOatIioNnT t oC OsuNbsScEriNbTe fSoOr, LbIuCyI TorA sTeIlOl aNn yS TseAcTuEriMtieEs NoTr a / sPoRliOciStaPtEioCnT oUf San Ay NvoDt eA oNr Yap OprToHvaEl Rin R aEnyL EjuVrAisdNiTct iDonO, CnUorM shEaNllT thSe TreH bAeT a nAyR sEa lFeI, LisEsuDa nOcRe oWr ItLraLn sBfeEr FoIfL sEecDu rWitiIeTs Hin T aHnyE jSurEisCd,i cAtiSo nW iEn LwLh iAchS sAuNchY o AffeMr,E inNvDitMatiEoNn,T sSa lOe Ror SsUolPicPitLaEtiMonE wNoTuSld T bOe TunHlaEwSfEu lD pOriCorU tMo rEeNgiTstSr,a tCioAnR oEr FqUuaLlLifYic aAtiNonD u InNd eTrH thEeI Rse EcuNriTtiIeRsE laTwYs BoEf aCnAyU suScEh TjuHrEisYdi cCtiOoNn.T ANIoN o fOfeRr oWf IsLeLcu CriOtieNs TsAhaIlNl bIMe mPOadReT eAxNceTp tI NbyF mOReaMnsA oTfI Oa Npr oAsBpeOcUtuTs mTHeeEti nPgR tOheP OreSqEuDire TmReAntNs SofA SCeTctIiOonN 1A0N oDf t hReE SLeAcTurEitDie Ms AAcTt ToEf R19S3. 3 I,n avse asmtoersn daned, saencdu roityh ehrowlidseer sin m aacyc oorbdtaaninc ef rweeit hco appipelsi coafb tlhee l arewg.istration statement on Form S-4 (when available), which will include the joint consent solicitation statement / prospectus, and other documents filed with the SEC by CBS and Viacom through the website maintained by the SEC at www.sec.gov or by contacting the investor relations department of CBS (+1-212-975-4321 or +1-877-227-0787; [email protected]) or Viacom (+1-212-846-6700 or +1-800-516-4399; [email protected]). Participants in the Solicitation CBS and Viacom and their respective directors and executive officers may be deemed to be participants in the solicitation of consents in respect of the proposed transaction. Information regarding CBS’ directors and executive officers, including a description of their direct interests, by security holdings or otherwise, is contained in CBS’ Form 10-K for the fiscal year ended December 31, 2018 and its proxy statement filed on April 12, 2019, both of which are filed with the SEC. Information regarding Viacom’s directors and DcaocIcmSoCmrdLoaAnn cIsMeto wEckRit ha C nUadu. 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