13G Filing: RA Capital Management and Derma Sciences, Inc. (DSCI)

CUSIP No. 249827502

Item 1.

(a) Name of Issuer: Derma Sciences,
Inc. (the “Issuer”).

(b) Address of the Issuer’s
Principal Executive Offices: 214 Carnegie Center, Suite 300, Princeton, NJ 08540.

Item 2.

(a) Name of Person
Filing: This joint statement on Schedule 13G is being filed by Peter Kolchinsky, RA Capital Management, LLC (“Capital”),
and RA Capital Healthcare Fund, L.P. (the “Fund”). Mr. Kolchinsky, Capital and the Fund are collectively referred to
herein as the “Reporting Persons.”

(b) Address of
Principal Business Office: The principal business office of the Reporting Persons is c/o RA Capital Management, LLC, 20 Park
Plaza, Suite 1200, Boston, MA 02116.

(c) Citizenship:
Capital is a Massachusetts limited liability company. The Fund is a Delaware limited partnership. Mr. Kolchinsky is a United States
citizen.

(d) Title and Class
of Securities: Common stock (“Common Stock”)

(e) CUSIP Number:
249827502

Item 3. If this statement is filed
pursuant to §§240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:

Not applicable.

Item 4. Ownership:

Provide the following information regarding
the aggregate number and percentage of the class of securities of the issuer identified in Item 1.

(a) Amount Beneficially Owned:**

RA Capital Management, LLC – 2,055,676 shares

Peter Kolchinsky – 2,055,676 shares

RA Capital Healthcare Fund, L.P. –
1,613,065 shares

(b) Percent of Class:**

RA Capital Management, LLC – 8.0%

Peter Kolchinsky – 8.0%

RA Capital Healthcare Fund, L.P. –
6.3%