ALGM Filings — Allegro Microsystems, Inc. - FilingSpy
ALGM
Allegro Microsystems, Inc.
A maker of the tiny magnetic sensors and power chips that quietly run modern life, Allegro MicroSystems builds the components that measure wheel speed for anti-lock brakes, position for electric power steering, and current for everything from car motors to AI data centers. The company traces back to the semiconductor division of Sprague Electric, spun off in 1990 and bought by Japan's Sanken Electric. Fun fact: the "Allegro" name means "fast and lively" in music — fitting for chips that track motion, and the company still calls New Hampshire home.
Select a row to see that insider’s individual transactions. † Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over the last year: -122.6K shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.