This post was also written by Katherine Mathews and Ariel Nieland.

The Federal Trade Commission has announced the annual threshold adjustments for premerger filings under the Hart-Scott-Rodino Antitrust Improvements Act of 1976 (15 U.S.C. § 18a) (“HSR”). The new thresholds will take effect February 22, 2010 and will govern all transactions closing on or after that date.

The new thresholds have decreased the dollar amount required to trigger HSR notification and waiting period requirements with respect to both the size-of-transaction and size-of-person tests.

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