TRINSEO PLC

Ticker: TSE CUSIP: G9059U107 Class: Foreign Stock

BRIGHTLINE CAPITAL MANAGEMENT, LLC's Holding History (CIK: 0001432450)

Note: Option positions (PUT/CALL) are excluded.

Q3 2025

Shares 1,060,000 Value ($000) $2,491 Avg Close $2.60 Range $1.90 - $3.32

Q2 2025

Shares 1,022,000 Value ($000) $3,189 Avg Close $3.28 Range $2.33 - $4.41

Q1 2025

Shares 1,016,000 Value ($000) $3,739 Avg Close $4.52 Range $3.49 - $5.95

Q4 2024

Shares 945,000 Value ($000) $4,820 Avg Close $4.89 Range $3.12 - $6.98

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2025	1,060,000	$2,491	$2.60	$1.90 - $3.32
Q2 2025	1,022,000	$3,189	$3.28	$2.33 - $4.41
Q1 2025	1,016,000	$3,739	$4.52	$3.49 - $5.95
Q4 2024	945,000	$4,820	$4.89	$3.12 - $6.98