JOINT FILING AGREEMENT
EXHIBIT 99.1
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 13G need be filed with respect to the ownership by each of the undersigned of Ordinary Shares of NewAmsterdam Pharma Company N.V.
Date: August 20, 2025
▇▇▇▇▇▇▇ LIFE SCIENCES X, L.P.
By: FHMLS X, L.P., its General Partner
By: FHMLS X, L.L.C., its General Partner
By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇▇
▇▇▇▇▇ ▇. ▇▇▇▇▇▇, Chief Financial Officer
Date: August 20, 2025
▇▇▇▇▇▇▇ LIFESCIENCES SPONSOR LLC
By: ▇▇▇▇▇▇▇ Life Sciences X, L.P., its sole member
By: FHMLS X, L.P., its General Partner
By: FHMLS X, L.L.C., its General Partner
By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇▇
▇▇▇▇▇ ▇. ▇▇▇▇▇▇, Chief Financial Officer
Date: August 20, 2025
FHMLS X, L.P.
By: FHMLS X, L.L.C., its General Partner
By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇▇
▇▇▇▇▇ ▇. ▇▇▇▇▇▇, Chief Financial Officer
Date: August 20, 2025
FHMLS X, L.L.C.
By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇▇
▇▇▇▇▇ ▇. ▇▇▇▇▇▇, Chief Financial Officer
Date: August 20, 2025
▇▇▇▇▇▇▇ LIFE SCIENCES PUBLIC FUND, L.P.
By: FHMLSP, L.P., its General Partner
By: FHMLSP, L.L.C., its General Partner
By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇▇
▇▇▇▇▇ ▇. ▇▇▇▇▇▇, Chief Financial Officer
Date: August 20, 2025
FHMLSP, L.P.
By: FHMLSP, L.L.C., its General Partner
By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇▇
▇▇▇▇▇ ▇. ▇▇▇▇▇▇, Chief Financial Officer
Date: August 20, 2025
FHMLSP, L.L.C.
By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇▇
▇▇▇▇▇ ▇. ▇▇▇▇▇▇, Chief Financial Officer
Date: August 20, 2025
▇▇▇▇▇▇▇ 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/ ▇▇▇▇▇ ▇. ▇▇▇▇▇▇
▇▇▇▇▇ ▇. ▇▇▇▇▇▇, Chief Financial Officer
Date: August 20, 2025
FHMLSP OVERAGE, L.P.
By FHMLSP Overage, L.L.C., its General Partner
By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇▇
▇▇▇▇▇ ▇. ▇▇▇▇▇▇, Chief Financial Officer
Date: August 20, 2025
FHMLSP OVERAGE, L.L.C.
By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇▇
▇▇▇▇▇ ▇. ▇▇▇▇▇▇, Chief Financial Officer
Date: August 20, 2025
▇▇▇▇▇▇▇ LIFE SCIENCES XI, L.P.
By: FHMLS XI, L.P., its General Partner
By: FHMLS XI, L.L.C., its General Partner
By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇▇
▇▇▇▇▇ ▇. ▇▇▇▇▇▇, Chief Financial Officer
Date: August 20, 2025
FHMLS XI, L.P.
By: FHMLS XI, L.L.C., its General Partner
By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇▇
▇▇▇▇▇ ▇. ▇▇▇▇▇▇, Chief Financial Officer
Date: August 20, 2025
FHMLS XI, L.L.C.
By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇▇
▇▇▇▇▇ ▇. ▇▇▇▇▇▇, Chief Financial Officer
Date: August 20, 2025
▇▇▇▇▇▇▇ LIFE SCIENCES XII, L.P.
By: FHMLS XII, L.P., its General Partner
By: FHMLS XII, L.L.C., its General Partner
By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇
▇▇▇▇▇▇ ▇▇▇▇▇, General Counsel
Date: August 20, 2025
FHMLS XII, L.P.
By: FHMLS XII, L.L.C., its General Partner
By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇
▇▇▇▇▇▇ ▇▇▇▇▇, General Counsel
Date: August 20, 2025
FHMLS XII, L.L.C.
By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇
▇▇▇▇▇▇ ▇▇▇▇▇, General Counsel
Date: August 20, 2025
By: *
▇▇▇▇▇ ▇. ▇▇▇▇▇▇
Date: August 20, 2025
By: *
▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇
Date: August 20, 2025
By: **
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Date: August 20, 2025
By: **
▇▇▇▇▇ ▇▇▇▇▇
Date: August 20, 2025
By: ***
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Date: August 20, 2025
By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇▇
▇▇▇▇▇ ▇. ▇▇▇▇▇▇, as Attorney-in-Fact
* This Joint Filing Agreement was executed by ▇▇▇▇▇ ▇. ▇▇▇▇▇▇ 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 Joint Filing Agreement was executed by ▇▇▇▇▇ ▇. ▇▇▇▇▇▇ 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 Joint Filing Agreement was executed by ▇▇▇▇▇ ▇. ▇▇▇▇▇▇ on behalf of the individuals listed above pursuant to a Power of Attorney, a copy of which was filed with the SEC on April 18, 2022.