TRINSEO PLC

Ticker: TSE CUSIP: G9059U107 Class: Foreign Stock

BlackRock, Inc.'s Holding History (CIK: 0002012383)

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

Q4 2025

Shares 2,413,178 Value ($000) $1,199 Avg Close $1.19 Range $0.45 - $2.41

Q3 2025

Shares 2,369,672 Value ($000) $5,569 Avg Close $2.60 Range $1.90 - $3.32

Q2 2025

Shares 2,255,133 Value ($000) $7,036 Avg Close $3.28 Range $2.33 - $4.41

Q1 2025

Shares 757,558 Value ($000) $2,788 Avg Close $4.52 Range $3.49 - $5.95

Q4 2024

Shares 764,134 Value ($000) $3,897 Avg Close $4.89 Range $3.12 - $6.98

Q3 2024

Shares 771,513 Value ($000) $3,942 Avg Close $3.30 Range $1.91 - $5.97

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	2,413,178	$1,199	$1.19	$0.45 - $2.41
Q3 2025	2,369,672	$5,569	$2.60	$1.90 - $3.32
Q2 2025	2,255,133	$7,036	$3.28	$2.33 - $4.41
Q1 2025	757,558	$2,788	$4.52	$3.49 - $5.95
Q4 2024	764,134	$3,897	$4.89	$3.12 - $6.98
Q3 2024	771,513	$3,942	$3.30	$1.91 - $5.97