Names:
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Deerfield Mgmt HIF, L.P., Deerfield Mgmt III, L.P., Deerfield Management Company, L.P.,
Deerfield Healthcare Innovations Fund, L.P. and Deerfield Private Design Fund III, L.P.
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Address:
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780 Third Avenue, 37th Floor
New York, NY 10017
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Designated Filer:
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James E. Flynn
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Issuer and Ticker Symbol:
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Editas Medicine, Inc. [EDIT]
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Date of Event Requiring Statement:
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February 8, 2016
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DEERFIELD MGMT HIF, L.P.
By: J.E. Flynn Capital HIF, LLC, General Partner
By: /s/ Jonathan Isler
Jonathan Isler, Attorney-In-Fact
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DEERFIELD MGMT III, L.P.
By: J.E. Flynn Capital III, LLC, General Partner
By: /s/ Jonathan Isler
Jonathan Isler, Attorney-In-Fact
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DEERFIELD MANAGEMENT COMPANY, L.P.
By: Flynn Management LLC, General Partner
By: /s/ Jonathan Isler
Jonathan Isler, Attorney-In-Fact
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DEERFIELD PRIVATE DESIGN FUND III, L.P.
By: Deerfield Mgmt III, L.P., General Partner
By: J.E. Flynn Capital III, LLC, General Partner
By: /s/ Jonathan Isler
Jonathan Isler, Attorney-In-Fact
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DEERFIELD HEALTHCARE INNOVATIONS FUND, L.P.
By: Deerfield Mgmt HIF, L.P., General Partner
By: J.E. Flynn Capital HIF, LLC, General Partner
By: /s/ Jonathan Isler
Jonathan Isler, Attorney-In-Fact
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