A “60 Minutes” investigation has put the price of one of Mallinckrodt’s drugs under the microscope, but it isn’t weighing on the pharmaceutical giant’s stock price.

The report, which ran on CBS on Sunday, focused on a lawsuit filed by the city of Rockford, Illinois. The lawsuit said the combined cost for two young patients treated with Mallinckrodt‘s drug, HP Acthar Gel, totaled close to half a million dollars. The drug is used to treat a rare and potentially fatal condition affecting 2,000 babies each year.

Mallinckrodt’s stock closed down more than 1 percent on Friday, in anticipation of the report being aired. But shares of the drug maker have since bounced back, opening up more than 4 percent Monday before settling back. They are up more than 2.5 percent at midday.

The report comes ahead of an anticipated speech by President Donald Trump in which he is expected to outline new policies to deliver on his pledge to bring down drug prices. The “60 Minutes” report looked at the broader issue of how businesses across the health care supply chain have come to benefit from higher drug prices.

Mallinckrodt sells Acthar now, but the most dramatic price hike actually took place a few years ago, when the drug was owned by a company called Questcor. In 2007, Questcor hiked the price of Acthar from $1,650 a vial to more than $23,000 a vial overnight despite no notable improvements in the product.

Mallinckrodt acquired Questcor for $5.6 billion in 2014.

Since 2014, the price has continued to rise, and Acthar now costs more than $40,000 a vial — a total increase of 100-thousand percent from its selling price of $40 a vial in 2001, according to the “60 Minutes” report.

Last year, the Federal Trade Commission charged Mallinckrodt with violating antitrust law in its quest to “maintain extremely high prices for Acthar” by buying its main competitor, a drug called Synacthen. Mallinckrodt ultimately settled the matter for $100 million without admitting wrongdoing.

Mallinckrodt told CNBC that regarding the lawsuit, the company did not violate any laws.

“[Mallinckrodt] strongly believes that no company action outlined in the city of Rockford’s lawsuit constitutes a violation of any law, and, therefore, believes that the complaint should be dismissed in its entirety.”

As for the price of Acthar, Mallinckrodt says that, since it acquired the medicine, it has made “only modest price adjustments” in line with its pledge to price drugs responsibly.

But the lawsuit did not solely target the drug manufacturer. Express Scripts, the company negotiating prices for the city of Rockford, has also been pulled into the legal battle.

Express Scripts owned a business that exclusively distributed Acthar before selling the entity in November of last year. Rockford’s lawsuit alleges that the distributor helped keep prices high. Because towns hire pharmacy benefit managers to negotiate prices down, Rockford argues that Express Scripts unlawfully failed to advocate in the town’s best interest.

The pharmacy benefit manager has denied any wrongdoing in the Rockford lawsuit and makes the case that it was “not contractually obligated” to contain costs.

Express Scripts shares opened trading Monday up about a half percent, but they turned down more than 1 percent in midday trading after Center for Medicare and Medicaid Services Administrator Seema Verma tweeted that pharmacy benefit managers harm patients. Shares of CVS also fell, more than 2 percent.

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