Castleark Management LLC

SEC CIK: 0001106832
Latest filing: Aug 14, 2026

SEC filings (opens in a new tab)

PTCT holding history

PTC Therapeutics, Inc. in every 13F filed by Castleark Management LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

PTCT overview All 13F holders of PTCT Full Q2 2026 holdings

Shares (Q2 2026): 33,900
Value: $2.77M
% of portfolio: 0.1%
Quarters held: 3; Since Q4 2025

Holdings of PTCT by Castleark Management LLC, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q2 2026	33,900	$2.77M	0.1%	−57,980−63.1%	Reduced	Holders
Q1 2026	91,880	$6.26M	0.2%	−4,980−5.1%	Reduced	Holders
Q4 2025	96,860	$7.36M	0.2%	+96,860	New	Holders