A Practice Note discussing violations of the Hart-Scott-Rodino (HSR) Act for failure to file an HSR form before making an acquisition of assets or equity that was reportable under the HSR Act. This Practice Note includes a discussion of inadvertent failures to file based on improper reliance on the Rule 802.21 and Rule 802.51 exemptions, willful failures to file, penalty adjustments, and civil penalties for failure to file.