Exhibit 10.21

 

VOYAGER THERAPEUTICS, INC.

 

AMENDMENT NO. 1 TO THE

2015 EMPLOYEE STOCK PURCHASE PLAN

 

The Voyager Therapeutics, Inc. 2015 Employee Stock Purchase Plan (the “Plan”) is
hereby amended by the Board of Directors of Voyager Therapeutics, Inc., a
Delaware corporation, as follows:

The first sentence of Section 3 of the Plan is hereby amended by deleting it and
replacing it with the following:

“All individuals classified as employees on the payroll records of the Company
and each Designated Subsidiary are eligible to participate in any one or more of
the Offerings under the Plan, provided that as of the first day of the
applicable Offering (the “Offering Date”) they are customarily employed by the
Company or a Designated Subsidiary for more than 20 hours a week.”

 

 

ADOPTED BY BOARD OF DIRECTORS:

September 14, 2017

 

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