AGREEMENT
Exhibit A
AGREEMENT
The undersigned agree that this Schedule 13D amendment, dated August 26, 2025, relating to the Class A common stock, par value $0.0001 per share of GeneDx Holdings Corp. shall be filed on behalf of the undersigned.
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| By ▇▇▇ ▇▇▇▇▇▇ | |
| ▇▇▇ ▇▇▇▇▇▇, Manager | |
| August 26, 2025 | |
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C-LSH LLC | |
| By ▇▇▇ ▇▇▇▇▇▇ | |
| ▇▇▇ ▇▇▇▇▇▇, Managing Member | |
| August 26, 2025 | |
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M-LSH LLC | |
| By ▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇ | |
| ▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇, Managing Member | |
| August 26, 2025 | |
| Casdin Capital, LLC | |
| By ▇▇▇ ▇▇▇▇▇▇ | |
| ▇▇▇ ▇▇▇▇▇▇, Managing Member | |
| August 26, 2025 | |
| Casdin Partners Master Fund, L.P. | |
| By ▇▇▇ ▇▇▇▇▇▇ | |
| ▇▇▇ ▇▇▇▇▇▇, Managing Member of its General Partner | |
| August 26, 2025 | |
| Casdin Partners GP, LLC | |
| By ▇▇▇ ▇▇▇▇▇▇ | |
| ▇▇▇ ▇▇▇▇▇▇, Managing Member | |
| August 26, 2025 | |
| ▇▇▇ ▇▇▇▇▇▇ | |
| By ▇▇▇ ▇▇▇▇▇▇ | |
| ▇▇▇ ▇▇▇▇▇▇ | |
| August 26, 2025 | |
| ▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇ | |
| By ▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇ | |
| ▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇ | |
| August 26, 2025 | |
| Corvex Management LP | |
| By ▇▇▇▇▇ ▇▇▇▇▇▇▇ | |
| ▇▇▇▇▇ ▇▇▇▇▇▇▇, Managing Partner | |
| August 26, 2025 |