ADTRAN HOLDINGS INC

Ticker: ADTN CUSIP: 00486H105 Class: Common Stock

DIMENSIONAL FUND ADVISORS LP's Holding History (CIK: 0000354204)

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

Q4 2025

Shares 888,180 Value ($000) $7,719 Avg Close $8.68 Range $7.11 - $10.75

Q3 2025

Shares 431,037 Value ($000) $4,042 Avg Close $9.32 Range $7.95 - $10.64

Q2 2025

Shares 440,008 Value ($000) $3,947 Avg Close $7.98 Range $6.93 - $9.17

Q1 2025

Shares 442,004 Value ($000) $3,855 Avg Close $10.06 Range $8.30 - $12.44

Q4 2024

Shares 623,935 Value ($000) $5,197 Avg Close $7.38 Range $5.67 - $9.21

Q3 2024

Shares 437,861 Value ($000) $2,596 Avg Close $5.57 Range $4.62 - $6.92

Q2 2024

Shares 279,915 Value ($000) $1,472 Avg Close $5.10 Range $4.34 - $5.87

Q1 2024

Shares 276,277 Value ($000) $1,503 Avg Close $6.38 Range $5.19 - $7.66

Q4 2023

Shares 30,723 Value ($000) $226 Avg Close $6.59 Range $4.91 - $8.56

Q3 2023

Shares 72,113 Value ($000) $593 Avg Close $8.83 Range $6.92 - $10.84

Q2 2023

Shares 625,001 Value ($000) $6,581 Avg Close $9.75 Range $7.73 - $15.55

Q1 2023

Shares 1,511,054 Value ($000) $23,965 Avg Close $16.92 Range $14.49 - $19.68

Q4 2022

Shares 2,032,892 Value ($000) $38 Avg Close $19.51 Range $17.59 - $22.50

Q3 2022

Shares 2,184,782 Value ($000) $42,777 Avg Close $21.11 Range $16.78 - $24.69

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	888,180	$7,719	$8.68	$7.11 - $10.75
Q3 2025	431,037	$4,042	$9.32	$7.95 - $10.64
Q2 2025	440,008	$3,947	$7.98	$6.93 - $9.17
Q1 2025	442,004	$3,855	$10.06	$8.30 - $12.44
Q4 2024	623,935	$5,197	$7.38	$5.67 - $9.21
Q3 2024	437,861	$2,596	$5.57	$4.62 - $6.92
Q2 2024	279,915	$1,472	$5.10	$4.34 - $5.87
Q1 2024	276,277	$1,503	$6.38	$5.19 - $7.66
Q4 2023	30,723	$226	$6.59	$4.91 - $8.56
Q3 2023	72,113	$593	$8.83	$6.92 - $10.84
Q2 2023	625,001	$6,581	$9.75	$7.73 - $15.55
Q1 2023	1,511,054	$23,965	$16.92	$14.49 - $19.68
Q4 2022	2,032,892	$38	$19.51	$17.59 - $22.50
Q3 2022	2,184,782	$42,777	$21.11	$16.78 - $24.69