Hart-Scott-Rodino Antitrust Improvements Act: Filing & Compliance

The HSR Act defines size by reference to annual net sales and total assets. Corporations must aggregate revenues and assets of their subsidiaries and affiliates in calculating whether thresholds are met. This aggregation can push a deal into reportable territory even if the acquiring company alone would fall below the threshold. Courts and the FTC have interpreted aggregation broadly, so corporations cannot avoid HSR by using a subsidiary or shell entity to acquire a target.

Certain transactions are exempt from HSR filing, including acquisitions of goods or services in the ordinary course of business, acquisitions of less than 10 percent of a public company's voting securities, and transactions involving foreign sovereigns or foreign government entities. Real estate acquisitions and some financial transactions also qualify for exemptions. Corporations should analyze exemptions carefully, because a transaction that appears to qualify may lose exemption status if the acquiring party later exercises control or intends to use the acquired entity in a way that changes the character of the transaction.

The HSR rules define documents broadly to include internal communications, board presentations, and analyses addressing the target's competitive position, market share, or pricing power. Corporations often struggle with the scope of Item 4(c) discovery, because the rules do not require production of all documents in a company's files, but rather documents prepared by or for the parties to the transaction that are material to the FTC's competitive analysis. From a practitioner's perspective, this distinction creates gray areas; documents that seem tangential may still be material if they bear on market concentration, entry barriers, or pricing behavior. Corporations should work with counsel to identify and produce responsive documents while asserting appropriate privileges and confidentiality protections.

Filings must be certified by officers of the acquiring and acquired entities under penalty of perjury. False or misleading statements in an HSR filing can result in civil penalties and may provide grounds for enforcement action. Corporations must ensure that certifying officers have reviewed the underlying documents and have a reasonable basis to attest to their accuracy. In New York practice, delayed or incomplete certification can delay agency review and may lead to Second Request issuance if the FTC determines that initial filings were deficient in material respects.

Agencies evaluate competitive effects by examining market concentration, barriers to entry, customer switching costs, and the merged entity's incentive and ability to raise prices or reduce output. Horizontal mergers (competitors combining) receive closer scrutiny than vertical or conglomerate mergers. Agencies also consider whether the transaction would eliminate a significant competitive threat or remove a maverick competitor that constrains pricing in the market. Corporations should understand that agency review is not purely mechanical; prosecutors have discretion to challenge transactions based on forward-looking competitive effects that may not be evident from historical market shares alone.

If a Second Request is issued, corporations face a choice: comply fully and submit to extended review, or negotiate with the agencies to modify the transaction structure or divest assets to address competitive concerns. Many transactions resolve through negotiation and consent agreements that impose divestitures or behavioral remedies. Corporations should prepare for Second Request scenarios early in deal planning by identifying potential competitive sensitivities and considering whether divested assets or operational changes could address agency concerns. Our antitrust practice focuses on helping corporations navigate agency review and structure deals to minimize enforcement risk.

Before filing, corporations should ensure that all Item 4(c) documents are identified, reviewed for privilege and confidentiality, and organized for submission. Corporations should also prepare officer certifications and ensure that certifying officers understand the scope of their attestations. Documentation of competitive analysis, market research, and internal discussions regarding the transaction should be preserved and made available to counsel for review. Our Hart-Scott-Rodino filing team works with corporations to prepare filings that are complete, accurate, and positioned to withstand agency scrutiny.

Corporations planning transactions above HSR thresholds should begin HSR compliance analysis as early as possible in the deal process. Waiting until a letter of intent is signed to assess HSR implications can create time pressure and limit options for deal restructuring if competitive concerns emerge. Corporations should document their competitive analysis, preserve internal communications regarding the transaction's competitive rationale, and prepare to respond promptly to agency requests for additional information. Early engagement with counsel experienced in HSR matters can help corporations identify competitive sensitivities, structure deals to minimize enforcement risk, and navigate agency review efficiently if a Second Request is issued.