13D Filing: RA Capital Management and Solid Biosciences Inc (SLDB)

Page 3 of 8 – SEC Filing

1

Names of Reporting Persons.

 

Peter Kolchinsky

2 Check the Appropriate Box if a Member of a Group (See Instructions)
(a) [ ]
(b) [ ]
3 SEC Use Only
4

Source of Funds (See Instructions):

AF

5

Check if disclosure of legal proceedings
is required pursuant to Items 2(d) or 2(e):

[ ]

6

Citizenship or Place of Organization. United
States

 

Number

of Shares

Beneficially

Owned by

Each

Reporting

Person With

7   Sole Voting Power 0 shares

8   Shared Voting Power 2,689,444 shares

9   Sole Dispositive Power 0 shares

10  Shared
Dispositive Power 2,689,444 shares

11

Aggregate Amount Beneficially Owned by
Each Reporting Person

2,689,444 shares

12 Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)     [ ]
13

Percent of Class Represented by Amount
in Row (11)

7.9%2

14

Type of Reporting Person (See Instructions)

HC, IN

2 The reporting person is the beneficial
owner of 2,689,444 shares of the Issuer’s Common Stock which constitute approximately 7.87% of the class outstanding. The
percentage calculation assumes that there are currently 34,151,022 outstanding shares of Common Stock of the Issuer, based upon
the closing of the Issuer’s initial public offering, as reported in the Issuer’s prospectus filed with the SEC on
January 29, 2018.

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