Registration No. 333-238195
PRELIMINARY PROSPECTUS SUPPLEMENT DATED MAY 12, 2020
(To prospectus dated May 12, 2020)
Acton, Massachusetts 01720
| | Per Share | | | Total(3) | |
Public Offering Price | | | $ | | | $ |
Underwriting discounts and commissions(1) | | | $ | | | $ |
Proceeds, before expenses, to us(2) | | | $ | | | $ |
(1) | See “Underwriting” for a description of compensation payable to the underwriters. |
(2) | We expect to receive estimated net proceeds, before expenses, of $ upon settlement of this offering of our common stock. |
(3) | Assumes no exercise of the underwriters’ option to purchase additional shares described below. |
Morgan Stanley | | | J.P. Morgan |