ADTRAN HOLDINGS INC

Ticker: ADTN CUSIP: 00486H105 Class: Common Stock

CANADA PENSION PLAN INVESTMENT BOARD's Holding History (CIK: 0001283718)

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

Q4 2025

Shares 15,500 Value ($000) $135 Avg Close $8.68 Range $7.11 - $10.75

Q3 2025

Shares 31,700 Value ($000) $297 Avg Close $9.32 Range $7.95 - $10.64

Q2 2024

Shares 2,600 Value ($000) $14 Avg Close $5.10 Range $4.34 - $5.87

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	15,500	$135	$8.68	$7.11 - $10.75
Q3 2025	31,700	$297	$9.32	$7.95 - $10.64
Q2 2024	2,600	$14	$5.10	$4.34 - $5.87