Ptc Therapeutics Inc. (PTCT): Camber Capital Management Adds 500,000 Shares to Its Position

Page 4 of 6 – SEC Filing

13G

CUSIP No.
69366J200

Page 4 of
6

 

 

ITEM 1.

(a) Name of
Issuer:

PTC Therapeutics,
Inc.

 

(b) Address of
Issuer’s Principal Executive Offices:

100 Corporate
Court, South Plainfield, NJ 07080

 

ITEM 2.

(a) Name of Person
Filing:

Camber Capital
Management LLC

Stephen
DuBois

 

(b) Address of
Principal Business Office, or if None, Residence:

Camber Capital
Management LLC

Stephen
DuBois

101 Huntington
Avenue

Suite
2101

Boston, MA
02199

 

(c)
Citizenship:

Camber Capital
Management LLC –
Massachusetts

Stephen
DuBois – United
States

 

(d) Title of Class
of Securities:

Common Stock, par
value. $0.001 per share

 

(e) CUSIP
Number:

69366J200

 

 

ITEM 3. IF THIS STATEMENT IS FILED PURSUANT TO
SS.240.13d-1(b) OR 240.13d-2(b) OR (c), CHECK WHETHER THE PERSON
FILING IS A:

 

	(a)	[_]	Broker or dealer registered under Section 15 of the Act  (15 U.S.C. 78o).
	(b)	[_]	Bank as defined in Section 3(a)(6) of the Act (15 U.S.C. 78c).
	(c)	[_]	Insurance company as defined in Section 3(a)(19) of the Act (15 U.S.C. 78c).
	(d)	[_]	Investment company registered under Section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).
	(e)	[_]	An investment adviser in accordance with  ss.240.13d-1(b)(1)(ii)(E);
	(f)	[_]	An employee benefit plan or endowment fund in accordance with ss.240.13d-1(b)(1)(ii)(F);
	(g)	[_]	A parent holding company or control person in accordance with ss.240.13d-1(b)(1)(ii)(G);
	(h)	[_]	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
	(i)	[_]	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
	(j)	[_]	Group, in accordance with ss.240.13d-1(b)(1)(ii)(J).

 

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: Camber Capital Management LLC –
2,000,000
shares

Stephen DuBois
– 2,000,000
shares

 

(b) Percent of
class: Camber Capital Management LLC –
5.84%

Stephen DuBois
– 5.84%