BB Biotech (BBBOF) SC 13G/A Revolution Medicines / BB BIOTECH ownership change

Exhibit A

Joint Filing Statement

We, the undersigned, hereby express our agreement that the attached Schedule 13G (including all amendments thereto) is filed on behalf of each of the undersigned.

BB Biotech AG
Date: February 6, 2024	By:	/s/ Martin Gubler
		Signatory Authority
	Name:	Martin Gubler
	Title:	Signatory Authority
Date: February 6, 2024	By:	/s/ Ivo Betschart
		Signatory Authority
	Name:	Ivo Betschart
	Title:	Signatory Authority
Biotech Growth N.V.
Date: February 6, 2024	By:	/s/ Jan Bootsma
		Signatory Authority
	Name:	Jan Bootsma
	Title:	Signatory Authority
Date: February 6, 2024	By:	/s/ Hugo van Neutegem
		Signatory Authority
	Name:	Hugo van Neutegem
	Title:	Signatory Authority

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Biotech Target N.V.
Date: February 6, 2024	By:	/s/ Jan Bootsma
		Signatory Authority
	Name:	Jan Bootsma
	Title:	Signatory Authority
Date: February 6, 2024	By:	/s/ Hugo van Neutegem
		Signatory Authority
	Name:	Hugo van Neutegem
	Title:	Signatory Authority

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