TALEN ENERGY CORP

Ticker: TLN CUSIP: 87422Q109 Class: EQTY

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC's Holding History (CIK: 0001644956)

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

Q4 2025

Shares 569,399 Value ($000) $213,434 Avg Close $388.68 Range $343.40 - $451.28

Q3 2025

Shares 679,697 Value ($000) $289,130 Avg Close $361.29 Range $255.50 - $430.71

Q2 2025

Shares 1,101,782 Value ($000) $320,365 Avg Close $237.27 Range $162.31 - $301.69

Q1 2025

Shares 1,112,993 Value ($000) $222,231 Avg Close $216.89 Range $158.08 - $258.03

Q4 2024

Shares 1,191,166 Value ($000) $239,984 Avg Close $195.05 Range $148.02 - $230.89

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	569,399	$213,434	$388.68	$343.40 - $451.28
Q3 2025	679,697	$289,130	$361.29	$255.50 - $430.71
Q2 2025	1,101,782	$320,365	$237.27	$162.31 - $301.69
Q1 2025	1,112,993	$222,231	$216.89	$158.08 - $258.03
Q4 2024	1,191,166	$239,984	$195.05	$148.02 - $230.89