Page 4 of 8 – SEC Filing
SCHEDULE 13D
| Item 1. | Security and Issuer |
This Schedule 13D relates to common
stock, par value $0.001 per share (the “Common Stock”), of Solid Biosciences Inc., a Delaware corporation (the “Issuer”). The
address of the principal executive offices of the Issuer is: 161 First Street, Third Floor, Cambridge, MA 02142.
| Item 2. | Identity and Background |
(a) This Schedule 13D is being
filed on behalf of (i) RA Capital Management, LLC (“RA Capital”) and (ii) Peter Kolchinsky and together with
each of the foregoing, the “Reporting Persons”).
Common Stock reported herein for RA Capital
represent shares reported for RA Capital Healthcare Fund, L.P. (the “Fund”) as well as shares held in a separately
managed account (the “Account”). RA Capital is the general partner of the Fund and serves as investment adviser for
the Account. Peter Kolchinsky is the manager of RA Capital. As the investment adviser to the Fund and the Account, RA Capital may
be deemed a beneficial owner, for purposes of Section 13(d) of the Securities Exchange Act of 1934 (the “Act”), of
any securities of the Issuer owned by the Fund or the Account. As the manager of RA Capital, Mr. Kolchinsky may be deemed a beneficial
owner, for purposes of Section 13(d) of the Act, of any securities of the Issuer beneficially owned by RA Capital. RA Capital is
a registered investment adviser within the meaning of Rule 13d-1(b)(1)(ii)(E) and Rule 16a-1(a)(v), and Mr. Kolchinsky is a parent
or control person of RA Capital within the meaning of Rule 13d-1(b)(1)(ii)(G) and Rule 16a-1(a)(1)(vii). RA Capital and Mr. Kolchinsky
disclaim beneficial ownership of the securities reported in this Schedule 13D Statement (the “Statement”) other than
for the purpose of determining their obligations under Section 13(d) of the Act, and neither the filing of the Statement nor the
filing of this Amendment shall be deemed an admission that either RA Capital or Mr. Kolchinsky is the beneficial owner of such
securities for any other purpose.
(b) The business address of each of
the Reporting Persons is: 20 Park Plaza, Suite 1200, Boston, MA 02116.
(c) The Fund is a private investment
vehicle. RA Capital provides investment management services to the Fund and the Account. The principal occupation of Mr. Kolchinsky
is investment management.
(d) None of the Reporting Persons
has, during the last five years, been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors).
(e) None of the Reporting Persons
has, during the last five years, been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction
and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting
or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.
(f) See Item 6 of the cover pages.
| Item 3. | Source and Amount of Funds or Other Consideration |
Prior to the Issuer’s initial public
offering (the “IPO”), the Reporting Persons acquired equity interests in the Issuer’s
predecessor in a private placement, and those interests converted into 1,689,444 shares of Common Stock prior to consummation of
the IPO. The Reporting Persons purchased 1,000,000 shares of Common Stock from the underwriters of the IPO. All purchases were
for cash and were funded by working capital of the Fund and the Account.
