ADTRAN HOLDINGS INC

Ticker: ADTN CUSIP: 00486H105 Class: Common Stock

SBI Securities Co., Ltd.'s Holding History (CIK: 0001851815)

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

Q4 2025

Shares 13 Value ($000) $0 Avg Close $8.68 Range $7.11 - $10.75

Q3 2025

Shares 12 Value ($000) $0 Avg Close $9.32 Range $7.95 - $10.64

Q2 2025

Shares 12 Value ($000) $0 Avg Close $7.98 Range $6.93 - $9.17

Q1 2025

Shares 12 Value ($000) $0 Avg Close $10.06 Range $8.30 - $12.44

Q4 2024

Shares 12 Value ($000) $0 Avg Close $7.38 Range $5.67 - $9.21

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	13	$0	$8.68	$7.11 - $10.75
Q3 2025	12	$0	$9.32	$7.95 - $10.64
Q2 2025	12	$0	$7.98	$6.93 - $9.17
Q1 2025	12	$0	$10.06	$8.30 - $12.44
Q4 2024	12	$0	$7.38	$5.67 - $9.21