The Hart-Scott-Rodino Antitrust Improvements Act of 1976 imposes premerger notification and waiting period obligations on transactions over a certain size, where the parties are over a certain size, before those transactions may be completed. Each "person" who is a party to an HSR-reportable deal must file an HSR notification with the DOJ and the Federal Trade Commission. On January 28, 2008, the Federal Trade Commission published revised thresholds for premerger filings under the HSR Act. The new thresholds go into effect February 28, 2008. Acquisitions that have not closed by that date will be subject to the new thresholds. The Act requires all persons contemplating certain mergers or acquisitions meeting the jurisdictional thresholds in the Act to file notification with the FTC and the Department of Justice's Antitrust Division. Filing persons must wait a designated period of time, usually 30 days, before completing their transactions.

The filing thresholds are revised annually, based on gross national product. The thresholds include a size of transaction test and a size of person test. The size of transaction test includes the value of the assets, stock or noncorporate interests (such as partnership or membership interests) being acquired in the deal, and the value of assets, voting securities or noncorporate interests of the target that the acquiring person already holds. In asset deals, the value of the assets is either the acquisition price or the fair market value of the assets, whichever is higher. In stock deals, the value of the stock is determined by the acquisition price or market price, whichever is higher. The size of person test measures the size of the “ultimate parent entity” of the buyer and seller. The "ultimate parent entity" is an entity or natural person that controls the buyer or seller and is not itself controlled by anyone else, e.g., the entity or natural person that has 50% or more of the voting securities of the buyer or seller.[1


The new thresholds are as follows.

While the filing thresholds have changed, the filing fees have not. If the value of the transaction is more than $63.1 million but less than $126.2 million, the filing fee is $45,000. The filing fee is $125,000 if the value of the transaction is $126.2 million or more but less than $630.8 million. If the value of the transactions is $630.8 million or more, the filing fee is $280,000.

The above rules are general guidelines only and their application may vary depending on the particular transaction.