ALLEGRO MICROSYSTEMS INC

Ticker: ALGM CUSIP: 01749D105 Class: Common Stock

JOHNSON INVESTMENT COUNSEL INC's Holding History (CIK: 0000821197)

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

Q3 2025

Shares 7,659 Value ($000) $224 Avg Close $32.34 Range $28.85 - $38.45

Q2 2025

Shares 7,659 Value ($000) $262 Avg Close $24.91 Range $16.38 - $34.30

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2025	7,659	$224	$32.34	$28.85 - $38.45
Q2 2025	7,659	$262	$24.91	$16.38 - $34.30