Here is an update.

On Friday, May 30, the CDA sent its airline partners the final gate layout for O’Hare International Airport as part of the 2025 gate reallocation process, triggered in January by United Airlines in accordance with the airport’s 2018 Airline Use and Lease Agreement (AULA).The final gate layout, available at FlyChicago.com, awards the following preferential-use gates to the following airlines:

·Air Canada: One gate at Concourse E

·Alaska Airlines: One gate at Concourse G

·American Airlines: 59 gates across Concourses G, H, K and L

·Delta Air Lines: Seven gates at Concourse M

·JetBlue: One gate at Concourse G

·Southwest Airlines: Three gates at Concourse M

·Spirit Airlines: Four gates at Concourse G

·United Airlines: 95 gates across Concourses B, C, E, F and G.

https://www.flychicago.com/SiteColle...ibits_2025.pdf

So IamSuss was wrong, AA did lose five gates. Half of G is no longer AA when the entire concourse used to be all AA.