When American Airlines and Sabre finally settled their mudslinging, take-no-prisoners federal and state antitrust and breach of contract lawsuits in October 2012, the two adversaries were sworn to secrecy.

It appeared at the time that Sabre had come out on the short end of things, but its IPO registration statement filed today reveals to what extent — and you can follow the money.

Sabre had to make some large payments to American Airlines.

Sabre took a settlement charge of $222 million, net of tax, and says it made a $100 million payment to American Airlines in December 2012, and sent off another $100 million cheek to American Airlines last month.

Why They Were Fighting

The latest battle in the ongoing wars between the two partners reached a critical point in January 2011 as American Airlines’ pursued a months-long effort to get travel agencies to establish direct technology ties with the airline to get flight inventory and fares instead of have them go through Sabre for connectivity and services.

Sabre responded by biasing the display of American’s flights in the system that Sabre’s travel agency customers use, making those flights difficult to find, and Sabre began charging American exorbitant fees.

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American sought more than $1 billion in damages for what it considered to be Sabre’s anticompetitive practices.

Under the agreement, in addition to the $200 million in payments that Sabre had to make to American, the two parties renewed their distribution agreement, and another one between Travelocity and American was also renewed.

Neither party admitted any wrongdoing.

In its IPO papers, Sabre stated that its airline and hospitality IT unit is currently negotiating “additional/new agreements” to supply the airline with an internal reservations system. Sabre currently supplies American with its airline reservations system, and US Airways would presumably be transitioned to that system, as well.

Photo Credit: American Airlines and Sabre settled their antitrust and breach of contract suits about a year after American Airlines filed for bankruptcy protection, and while CEO Tom Horton, picture, was still in charge. Ron T. Ennis / Fort Worth Star-Telegram/MCT