AGREEMENT
EXHIBIT 1
AGREEMENT
Pursuant to Rule 13d-l(k)(l) under the Securities Exchange Act of 1934, the undersigned hereby agree that only one statement containing the information required by Schedule 13D need be filed with respect to the ownership by each of the undersigned of shares of Common Stock of Spark Therapeutics, Inc.
Date: February 5, 2015
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THE CHILDREN’S HOSPITAL OF PHILADELPHIA FOUNDATION | ||
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By: |
/s/ Xxxxxx Xxxxxxxxxx, MD |
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Xxxxxx Xxxxxxxxxx, MD |
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Chief Executive Officer |
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/s/ Xxxxxx Xxxxxxxxxx, MD |
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Xxxxxx Xxxxxxxxxx, MD |
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