Aug 23 (Reuters) -

* MBX BIOSCIENCES INC FILES FOR IPO - SEC FILING

* MBX BIOSCIENCES, INC- HAVE APPLIED TO LIST COMMON STOCK

ON

NASDAQ GLOBAL SELECT MARKET UNDER SYMBOL MBX

* MBX BIOSCIENCES INC SAYS J.P. MORGAN, JEFFERIES, STIFEL,

AND

GUGGENHEIM SECURITIES ARE UNDERWRITERS TO IPO

* MBX BIOSCIENCES INC SAYS ENTITIES AFFILIATED WITH FRAZIER

LIFE

SCIENCES BENEFICIALLY OWNED 21.88% OF SHARES PRIOR TO OFFERING

* MBX BIOSCIENCES INC SAYS ENTITIES AFFILIATED WITH NEW

ENTERPRISE

ASSOCIATES BENEFICIALLY OWNED 14.42% OF SHARES PRIOR TO OFFERING

* MBX BIOSCIENCES INC SAYS ENTITIES AFFILIATED WITH ORBIMED

ADVISORS LLC BENEFICIALLY OWNED 14.15% OF SHARES PRIOR TO

OFFERING

* MBX BIOSCIENCES INC SAYS ENTITIES AFFILIATES WITH RA

CAPITAL

BENEFICIALLY OWNED 6.40% OF SHARES PRIOR TO OFFERING