AGREEMENT
EXHIBIT A
AGREEMENT
Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, the undersigned hereby agree that only one statement containing the information required by Schedule 13D need to be filed with respect to the ownership by each of the undersigned of shares of Common Stock of MBX Biosciences, Inc.
| Date: September 23, 2024 | XXXXXXX LIFE SCIENCES PUBLIC FUND, L.P. | |||||
| By: FHMLSP, L.P., its General Partner | ||||||
| By: FHMLSP, L.L.C., its General Partner | ||||||
| By: | /s/ Xxxxx X. Xxxxxx | |||||
| Xxxxx X. Xxxxxx, Chief Financial Officer | ||||||
| Date: September 23, 2024 | FHMLSP, L.P. | |||||
| By: FHMLSP, L.L.C., its General Partner | ||||||
| By: | /s/ Xxxxx X. Xxxxxx | |||||
| Xxxxx X. Xxxxxx, Chief Financial Officer | ||||||
| Date: September 23, 2024 | FHMLSP, L.L.C. | |||||
| By: | /s/ Xxxxx X. Xxxxxx | |||||
| Xxxxx X. Xxxxxx, Chief Financial Officer | ||||||
| Date: September 23, 2024 | XXXXXXX LIFE SCIENCES PUBLIC OVERAGE FUND, L.P. | |||||
| By: FHMLSP Overage, L.P., its General Partner | ||||||
| By: FHMLSP Overage, L.L.C., its General Partner | ||||||
| By: | /s/ Xxxxx X. Xxxxxx | |||||
| Xxxxx X. Xxxxxx, Chief Financial Officer | ||||||
| Date: September 23, 2024 | FHMLSP OVERAGE, L.P. | |||||
| By FHMLSP Overage, L.L.C., its General Partner | ||||||
| By: | /s/ Xxxxx X. Xxxxxx | |||||
| Xxxxx X. Xxxxxx, Chief Financial Officer | ||||||
| Date: September 23, 2024 | FHMLSP OVERAGE, L.L.C. | |||||
| By: | /s/ Xxxxx X. Xxxxxx | |||||
| Xxxxx X. Xxxxxx, Chief Financial Officer | ||||||
Page 1
| Date: September 23, 2024 | XXXXXXX LIFE SCIENCES X, L.P. | |||||
| By: FHMLS X, L.P., its General Partner | ||||||
| By: FHMLS X, L.L.C., its General Partner | ||||||
| By: | /s/ Xxxxx X. Xxxxxx | |||||
| Xxxxx X. Xxxxxx, Chief Financial Officer | ||||||
| Date: September 23, 2024 | FHMLS X, L.P. | |||||
| By: FHMLS X, L.L.C., its General Partner | ||||||
| By: | /s/ Xxxxx X. Xxxxxx | |||||
| Xxxxx X. Xxxxxx, Chief Financial Officer | ||||||
| Date: September 23, 2024 | FHMLS X, L.L.C. | |||||
| By: | /s/ Xxxxx X. Xxxxxx | |||||
| Xxxxx X. Xxxxxx, Chief Financial Officer | ||||||
| Date: September 23, 2024 | XXXXXXX LIFE SCIENCES XI, L.P. | |||||
| By FHMLS XI, L.P., its general partner | ||||||
| By FHMLS XI, L.L.C., its general partner | ||||||
| By: | /s/ Xxxxx X. Xxxxxx | |||||
| Xxxxx X. Xxxxxx, Chief Financial Officer | ||||||
| Date: September 23, 2024 | FHMLS XI, L.P. | |||||
| By FHMLS XI, L.L.C., its general partner | ||||||
| By: | /s/ Xxxxx X. Xxxxxx | |||||
| Xxxxx X. Xxxxxx, Chief Financial Officer | ||||||
| Date: September 23, 2024 | FHMLS XI, L.L.C. | |||||
| By: | /s/ Xxxxx X. Xxxxxx | |||||
| Xxxxx X. Xxxxxx, Chief Financial Officer | ||||||
| Date: September 23, 2024 | By: | * | ||||
| Xxxxx X. Xxxxxx | ||||||
| Date: September 23, 2024 | By: | * | ||||
| Xxxxxxx X. Xxxxx | ||||||
| Date: September 23, 2024 | By: | ** | ||||
| Xxxxxx Xxx | ||||||
Page 2
| Date: September 23, 2024 | By: | ** | ||||
| Xxxxx Xxxxx | ||||||
| Date: September 23, 2024 | By: | *** | ||||
| Xxxxxx Xxxxx | ||||||
| Date: September 23, 2024 | By: | /s/ Xxxxx X. Xxxxxx | ||||
| Xxxxx X. Xxxxxx, as Attorney-in-Fact | ||||||
| * | This Agreement was executed by Xxxxx X. Xxxxxx on behalf of the individuals listed above pursuant to a Power of Attorney, a copy of which was filed with the SEC on July 31, 2017. |
| ** | This Agreement was executed by Xxxxx X. Xxxxxx on behalf of the individuals listed above pursuant to a Power of Attorney, a copy of which was filed with the SEC on August 16, 2021. |
| *** | This Agreement was executed by Xxxxx X. Xxxxxx on behalf of the individual listed above pursuant to a Power of Attorney, a copy of which was filed with the SEC on April 18, 2022. |
Page 3
