SEC Form 4 · accession 0000899243-16-034693

MyoKardia Inc · MYOK

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Table I — non-derivative securities

Table II — derivative securities

Explanation of responses

• F1Pursuant to a Rule 10b5-1 trading plan adopted by Third Rock Ventures II, L.P. ("TRV II"), Third Rock Ventures GP II, L.P. ("TRV GP II") and TRV GP II, LLC ("TRV GP II LLC"), TRV II distributed on November 29, 2016, for no consideration, 850,000 shares of Common Stock of the Issuer (the "Shares") to its limited partners and to TRV GP II, the general partner of TRV II, representing each such partner's pro rata interest in such Shares. On the same date, TRV GP II distributed, for no consideration, the Shares it received in the distribution by TRV II to its partners, representing each such partner's pro rata interest in such Shares. All of the aforementioned distributions were made in accordance with the exemptions afforded by Rules 16a-13 and 16a-9 of the Securities Exchange Act of 1934, as amended.
• F2The reporting person is a partner of TRV GP II, which is the general partner of TRV II. The reporting person disclaims beneficial ownership over the shares held by TRV II, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that he is the beneficial owner of such shares.
• F3The shares are directly held by the reporting person. Includes Shares received in the distributions described in footnote (1) above.