Dyne Therapeutics, Inc.
2020 EMPLOYEE STOCK PURCHASE PLAN
The purpose of this 2020 Employee Stock Purchase Plan (this Plan) is to provide eligible employees of Dyne Therapeutics, Inc. (the Company) and certain of its subsidiaries with opportunities to purchase shares of the Companys common stock, $0.0001 par value per share (the Common Stock), commencing at such time and on such dates as the Board of Directors of the Company (the Board) shall determine. Subject to adjustment under Section 15 hereof, the number of shares of Common Stock that have been approved for this purpose is the sum of:
(a) 488,414 shares of Common Stock; plus
(b) an annual increase to be added on the first day of each fiscal year, commencing on January 1, 2021 and continuing for each fiscal year until, and including, January 1, 2030, equal to the least of (i) 1,953,656 shares of Common Stock, (ii) 1% of the outstanding shares on such date and (iii) an amount determined by the Board.
This Plan is intended to qualify as an employee stock purchase plan as defined in Section 423 of the Internal Revenue Code of 1986, as amended (the Code), and the regulations issued thereunder, and shall be interpreted consistent therewith.
1. Administration. The Plan will be administered by the Board or by a committee appointed by the Board (the Committee). The Board or the Committee has authority to make rules and regulations for the administration of the Plan and its interpretation and decisions with regard thereto shall be final and conclusive.
2. Eligibility. All employees of the Company and all employees of any subsidiary of the Company (as defined in Section 424(f) of the Code) designated by the Board or the Committee from time to time (a Designated Subsidiary), are eligible to participate in any one or more of the offerings of Options (as defined in Section 9) to purchase Common Stock under the Plan provided that:
(a) they are customarily employed by the Company or a Designated Subsidiary for more than 20 hours a week and for more than five months in a calendar year;
(b) they have been employed by the Company or a Designated Subsidiary for at least three months prior to enrolling in the Plan; and
(c) they are employees of the Company or a Designated Subsidiary on the first day of the applicable Plan Period (as defined below).
No employee may be granted an Option hereunder if such employee, immediately after the Option is granted, owns 5% or more of the total combined voting power or value of the stock of the Company or any subsidiary. For purposes of the preceding sentence, the attribution rules of Section 424(d) of the Code shall apply in determining the stock ownership of an employee, and all stock that the employee has a contractual right to purchase shall be treated as stock owned by the employee.