CastleKnight Master Fund LP - 31 Dec 2025 SCHEDULE 13G/A Report for Trinseo PLC Ordinary Shares, par value $0.01 per share (TSE)

Filing Manager
CastleKnight Master Fund LP
Reporting Manager
CastleKnight Master Fund LP
Security
Trinseo PLC Ordinary Shares, par value $0.01 per share
Symbol
TSE
Shares outstanding
36,916,143 shares
Disclosed Ownership
516,826 shares
Ownership
1.4%
Form type
SCHEDULE 13G/A
Filing time
17 Feb 2026, 17:18:43 UTC
Date of event
31 Dec 2025
Previous filing
14 Aug 2025
SEC
View on sec.gov

Reporting Managers (6)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
CastleKnight Master Fund LP 1.4% 516,826 0 516,826 By: CastleKnight Fund GP LLC, its general partner, By: Weitman Capital LLC, its managing member By: /s/ Aaron Weitman / Manager
CastleKnight Fund GP LLC 1.4% 516,826 0 516,826 By: Weitman Capital LLC, its managing member By: /s/ Aaron Weitman / Manager
CastleKnight Management LP 1.4% 516,826 0 516,826 By: CastleKnight Management GP LLC, its general partner, By: Weitman Capital LLC, its managing member By: /s/ Aaron Weitman / Manager
CastleKnight Management GP LLC 1.4% 516,826 0 516,826 By: Weitman Capital LLC, its managing member By: /s/ Aaron Weitman / Manager
Weitman Capital LLC 1.4% 516,826 0 516,826 By: /s/ Aaron Weitman Aaron Weitman / Manager
Aaron Weitman 1.4% 516,826 0 516,826 By: /s/ Aaron Weitman Aaron Weitman