Prosight Management, LP

SEC CIK: 0001617201
Latest filing: Aug 14, 2026

SEC filings (opens in a new tab)

APTO holding history

Aptose Biosciences Inc. in every 13F filed by Prosight Management, LP, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

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

Shares (Q4 2021): 0; Sold out in Q4 2021
Value: $0
% of portfolio: 0.0%
Quarters held: 3; Since Q1 2021

Holdings of APTO by Prosight Management, LP, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q4 2021	0	$0	0.0%	−70,563−100.0%	Sold out	Holders
Q3 2021	70,563	$154.0K	0.1%	−62,437−46.9%	Reduced	Holders
Q2 2021	133,000	$442.0K	0.3%	−17,000−11.3%	Reduced	Holders
Q1 2021	150,000	$896.0K	0.7%	–	–	Holders

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.