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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1776111	Mbx Biosciences Inc.	MBX	()	DE

Insiders

Cik	Name	Reported Address	Director	Officer	Large Shareholder	Other
1768564	New Enterprise Associates 17, L.p.	1954 Greenspring Drive Suite 600 Timonium MD 21093	No	No	No	No
1796820	Nea Partners 17, L.p.	1954 Greenspring Drive Suite 600 Timonium MD 21093	No	No	No	No
1796821	Nea 17 Gp, Llc	1954 Greenspring Drive Suite 600 Timonium MD 21093	No	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2024-09-16	1,023,103	$0.00	1,023,103	No	4	C	Direct
Common Stock	Acquisiton	2024-09-16	2,091,383	$0.00	3,114,486	No	4	C	Direct
Common Stock	Acquisiton	2024-09-16	500,000	$16.00	3,614,486	No	4	P	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	C	Direct
No	4	C	Direct
No	4	P	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Series A Convertible Preferred Stock	Disposition	2024-09-16	12,299,854	$0.00	1,023,103	$0.00
Common Stock	Series B Convertible Preferred Stock	Disposition	2024-09-16	25,142,840	$0.00	2,091,383	$0.00

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0			No	4	C	Direct
0			No	4	C	Direct

Footnotes

Each share of Series A Convertible Preferred Stock and Series B Convertible Preferred Stock (collectively, the "Preferred Stock") was convertible into Common Stock on a one-for-12.0221 basis at any time at the option of the holder, and automatically converted into the number of shares shown in Column 7 immediately prior to the closing of the Issuer's initial public offering on September 16, 2024. The Preferred Stock had no expiration date.
The securities are directly held by New Enterprise Associates 17, L.P. ("NEA 17") and are indirectly held by NEA Partners 17, L.P. ("NEA Partners 17"), the sole general partner of NEA 17, NEA 17 GP, LLC ("NEA 17 GP"), the sole general partner of NEA Partners 17, and the individual managers of NEA 17 GP (NEA Partners 17, NEA 17 GP and the individual managers of NEA 17 GP (collectively, the "Managers") together, the "Indirect Reporting Persons"). The Mangers are Forest Baskett, Ali Behbahani, Carmen Chang, Anthony Florence, Jr., Mohamad Makhzoumi, Edward Mathers, Scott Sandell, Paul Walker and Rick Yang. The Indirect Reporting Persons disclaim beneficial ownership within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended, or otherwise of such portion of the securities held by NEA 17 in which the Indirect Reporting Persons have no pecuniary interest.