MAIR

Madison Air Solutions Corporation

A global maker of indoor air quality, HVAC, and airflow equipment, Madison Air Solutions owns brands such as AprilAire humidifiers, Reznor heaters, and Big Ass Fans. Founded in 2017 by Larry Gies of Madison Industries in Chicago, it was assembled by buying established ventilation brands and gathering them under one roof. One of those brands, Big Ass Fans, started in 1999 selling large slow-turning fans to dairy farmers and earned its name when customers kept calling the maker "the guys with those big ass fans."

CUSIP: 55658T105IndustrialsUS1 holder

Ownership Activity Financials Filings

Holder	Schedule	% of class	Shares	Filed
Larry Gies	13GPassive	67.1%	336.68M	Aug 10, 2026
Madison Industries Holdings LLC	13GPassive	64.7%	324.38M	Aug 10, 2026
Madison Air Co-Investors LLC	13GPassive	2.5%	12.30M	Aug 10, 2026
FMR LLC	13GPassive	8%	14.08M	Aug 6, 2026
Abigail P. Johnson	13GPassive	8%	14.08M	Aug 6, 2026
Ernesto Bertarelli	13GPassive	25.3%	44.84M	May 15, 2026
KC Armada LP	13GPassive	21.3%	37.62M	May 15, 2026
Durable Capital Partners LP	13GPassive	5.2%	9.26M	Apr 23, 2026

MAIR

MAIR

Schedule 13D / 13G filings