ALLEGRO MICROSYSTEMS INC

Ticker: ALGM CUSIP: 01749D105 Class: Common Stock

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

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

Q4 2025

Shares 2,301 Value ($000) $61 Avg Close $27.52 Range $22.41 - $33.84

Q3 2025

Shares 519 Value ($000) $15 Avg Close $32.34 Range $28.85 - $38.45

Q2 2025

Shares 285 Value ($000) $10 Avg Close $24.91 Range $16.38 - $34.30

Q1 2025

Shares 385 Value ($000) $10 Avg Close $24.96 Range $21.16 - $29.45

Q4 2024

Shares 512 Value ($000) $11 Avg Close $21.30 Range $18.59 - $24.14

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	2,301	$61	$27.52	$22.41 - $33.84
Q3 2025	519	$15	$32.34	$28.85 - $38.45
Q2 2025	285	$10	$24.91	$16.38 - $34.30
Q1 2025	385	$10	$24.96	$21.16 - $29.45
Q4 2024	512	$11	$21.30	$18.59 - $24.14