1、As filed with the U.S.Securities and Exchange Commission on June 18,2026.Registration No.333-UNITED STATESSECURITIES AND EXCHANGE COMMISSIONWashington,D.C.20549_FORM S-1REGISTRATION STATEMENTUNDERTHE SECURITIES ACT OF 1933_Bleichroeder Acquisition Corp.III(Exact name of registrant as specified in it
2、s charter)_Cayman Islands677098-1931116(State or other jurisdiction ofincorporation or organization)(Primary Standard IndustrialClassification Code Number)(I.R.S.EmployerIdentification Number)1345 Avenue of the Americas,Fl 47NewYork,NY10105212-984-3835(Address,including zip code,and telephone number
3、,including area code,ofregistrants principal executive offices)_Marcello PadulaChief Executive Officer1345 Avenue of the Americas,Fl 47NewYork,NY10105212-984-3835(Name,address,including zip code,and telephone number,including area code,ofagent for service)_Copies to:Lynwood E.ReinhardtJr.Liz M.Graff
4、eoReed Smith LLP2850 N.Harwood StreetSuite 1500Dallas,Texas75201(469)680-4200Bradley KrugerOgier(Cayman)LLP89 Nexus Way,CamanaBay,Grand Cayman,CaymanIslandsKY1-9009(345)949-9876Douglas S.EllenoffStuart NeuhauserJessica YuanEllenoff Grossman&Schole LLP1345 Avenue of theAmericas,11th FloorNewYork,NewY
5、ork10105(212)370-1300_Approximate date of commencement of proposed sale to the public:As soon as practicableafter the effective date of this registration statement.If any of the securities being registered on this Form are to be offered on a delayed or continuousbasis pursuant to Rule415 under the S
6、ecurities Actof1933 check the following box.If this Form is filed to register additional securities for an offering pursuant toRule462(b)under the Securities Act,please check the following box and list the Securities Actregistration statement number of the earlier effective registration statement fo