ALLEGRO MICROSYSTEMS INC

Ticker: ALGM CUSIP: 01749D105 Class: Common Stock

KEYBANK NATIONAL ASSOCIATION/OH's Holding History (CIK: 0001089877)

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

Q4 2025

Shares 13,565 Value ($000) $358 Avg Close $27.52 Range $22.41 - $33.84

Q3 2025

Shares 14,418 Value ($000) $421 Avg Close $32.34 Range $28.85 - $38.45

Q2 2025

Shares 19,415 Value ($000) $664 Avg Close $24.91 Range $16.38 - $34.30

Q1 2025

Shares 17,125 Value ($000) $430 Avg Close $24.96 Range $21.16 - $29.45

Q4 2024

Shares 11,760 Value ($000) $257 Avg Close $21.30 Range $18.59 - $24.14

Q3 2024

Shares 10,238 Value ($000) $239 Avg Close $25.14 Range $20.42 - $33.26

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	13,565	$358	$27.52	$22.41 - $33.84
Q3 2025	14,418	$421	$32.34	$28.85 - $38.45
Q2 2025	19,415	$664	$24.91	$16.38 - $34.30
Q1 2025	17,125	$430	$24.96	$21.16 - $29.45
Q4 2024	11,760	$257	$21.30	$18.59 - $24.14
Q3 2024	10,238	$239	$25.14	$20.42 - $33.26