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The U.S. Department of Justice (DOJ) has filed a lawsuit against private equity giant KKR & Co. Inc., alleging systemic violations of merger notification requirements under the Hart-Scott-Rodino (HSR) Antitrust Improvements Act. The complaint, filed Tuesday in New York federal court, accuses KKR of omitting key disclosures and failing to notify federal enforcers of at least two significant transactions, including a $6.9 billion deal.

Allegations of Systemic Misconduct

The DOJ claims KKR engaged in "rinse-and-repeat failures" to comply with federal merger rules. Acting Antitrust Division Chief Doha Mekki described the alleged violations as "systemic," potentially exposing KKR to penalties exceeding $650 million.

The agency alleges that KKR’s practices obscured the competitive risks of its acquisitions, allowing the firm to evade mandatory scrutiny and gain millions in revenues. "KKR’s conduct allowed it to repeatedly evade legally mandated scrutiny ... and reap millions of dollars in revenues from closing transactions without proper prior review," the DOJ said in a statement.

Impact on Competition

According to the DOJ, KKR’s alleged failures impaired the ability of federal agencies to evaluate the potential anticompetitive effects of its transactions. The complaint highlights concerns over serial acquisitions in key markets, which the DOJ says could have posed significant threats to competition and harmed consumers nationwide.

"In some cases, KKR's misconduct obscured the threat its deals posed to competition, including serial acquisitions affecting important markets," the DOJ said.

Potential Penalties

Under the HSR Act, parties must provide federal antitrust agencies with advance notice of certain mergers and acquisitions. Violations of these requirements can result in steep penalties, which the DOJ is now pursuing against KKR.

The lawsuit underscores the DOJ’s renewed focus on enforcing merger compliance rules and ensuring that private equity firms are held accountable for transparency in dealmaking.