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    <div style="display:none"><ix:header><ix:hidden><ix:nonNumeric name="dei:AmendmentFlag" id="ct-nonNumeric-6ade8de0-2af1-4c3f-b7cc-7c73d768ec0a" contextRef="Duration_4_8_2021_To_4_8_2021" format="ixt:booleanfalse">false</ix:nonNumeric><ix:nonNumeric name="dei:EntityCentralIndexKey" id="ct-nonNumeric-776f866d-d978-4678-b059-d9d9cbf15ae5" contextRef="Duration_4_8_2021_To_4_8_2021">0001323885</ix:nonNumeric></ix:hidden><ix:references><link:schemaRef xlink:type="simple" xlink:href="atrc-20210408.xsd"></link:schemaRef></ix:references><ix:resources><xbrli:context id="Duration_4_8_2021_To_4_8_2021"><xbrli:entity><xbrli:identifier scheme="http://www.sec.gov/CIK">0001323885</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2021-04-08</xbrli:startDate><xbrli:endDate>2021-04-08</xbrli:endDate></xbrli:period></xbrli:context></ix:resources></ix:header></div>
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    <div><div style="border-bottom: solid #000000 1.0pt;border-left: none;border-right: none;border-top: none;padding-bottom: 0;"><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 12pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 12pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">&#160;</span></p></div><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 16pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 4.5pt;text-align: center;"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 16pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">UNITED STATES</span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 16pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 16pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">SECURITIES AND EXCHANGE COMMISSION</span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">WASHINGTON, DC 20549</span></p><div style="border-bottom: solid #000000 1.0pt;border-left: none;border-right: none;border-top: none;padding-bottom: 0;"><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 12pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 12pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">&#160;</span></p></div><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 16pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 6pt;text-align: center;"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 16pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">FORM </span><ix:nonNumeric name="dei:DocumentType" id="ct-nonNumeric-0f6c8036-3e89-421e-8d61-9d27e15862eb" contextRef="Duration_4_8_2021_To_4_8_2021"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 16pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">8-K</span></ix:nonNumeric></p><div style="border-bottom: solid #000000 1.0pt;border-left: none;border-right: none;border-top: none;padding-bottom: 0;"><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 12pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 12pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">&#160;</span></p></div><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 14pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 6pt;text-align: center;"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 14pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">CURRENT REPORT</span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 12pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 9pt;text-align: center;"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 12pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">PURSUANT TO SECTION 13 OR 15(d) of the</span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 12pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 12pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">SECURITIES EXCHANGE ACT OF 1934</span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 12pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 9pt;text-align: center;"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 12pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">Date of Report (Date of earliest event reported): </span><ix:nonNumeric name="dei:DocumentPeriodEndDate" id="ct-nonNumeric-f98d5ea0-7d23-4973-8943-678dc24132ad" contextRef="Duration_4_8_2021_To_4_8_2021" format="ixt:datemonthdayyearen"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 12pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">April 8, 2021</span></ix:nonNumeric></p><div style="border-bottom: solid #000000 1.0pt;border-left: none;border-right: none;border-top: none;padding-bottom: 0;"><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 12pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 12pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">&#160;</span></p></div><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 16pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 6pt;text-align: center;"><ix:nonNumeric name="dei:EntityRegistrantName" id="ct-nonNumeric-289cc4ac-cd03-43b3-887d-07957a09cc63" contextRef="Duration_4_8_2021_To_4_8_2021"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 16pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">AtriCure, Inc.</span></ix:nonNumeric></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">(Exact name of registrant as specified in charter)</span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 4.5pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 1.5pt;"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 4.5pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">&#160;</span></p><div style="padding-left: 0;text-align:center"><table dir="ltr" style="border: none;border-collapse: collapse;margin-bottom: .001pt;margin-left: auto;margin-right: auto;"><tr style="height: 0.01in;"><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 155.8pt;"><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 9pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; font-size: 9pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 155.85pt;"><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 9pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; font-size: 9pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 155.85pt;"><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 9pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; font-size: 9pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td></tr><tr><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 155.8pt;"><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><ix:nonNumeric name="dei:EntityIncorporationStateCountryCode" id="ct-nonNumeric-95ede14e-43ba-4325-8441-f056aca36b59" contextRef="Duration_4_8_2021_To_4_8_2021" format="ixt-sec:stateprovnameen"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">Delaware</span></ix:nonNumeric></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 9pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; 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color: #000000;font-size: 8pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">(</span><ix:nonNumeric name="dei:CityAreaCode" id="ct-nonNumeric-4b364b90-8c7e-4e01-bb02-2665ed4a9665" contextRef="Duration_4_8_2021_To_4_8_2021"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">513</span></ix:nonNumeric><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">) </span><ix:nonNumeric name="dei:LocalPhoneNumber" id="ct-nonNumeric-22642691-603d-4341-954d-e916f35a814b" contextRef="Duration_4_8_2021_To_4_8_2021"><span style="white-space:pre-wrap; 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font-family: 'Times New Roman', 'serif';font-size: 1pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 1pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 361.1pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 1pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 1pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td></tr><tr><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 22.75pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; color: #000000;font-family: Wingdings;font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"><span style="white-space:pre-wrap; font-family: &quot;Wingdings&quot;">&#168;</span></span></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 361.1pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</span></p></td></tr></table></div><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 4.5pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 4.5pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">&#160;</span></p><ix:nonNumeric name="dei:SolicitingMaterial" id="ct-nonNumeric-96b9d752-79d5-4b53-9dcf-89bea49f17a6" contextRef="Duration_4_8_2021_To_4_8_2021" format="ixt:booleanfalse"><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 12pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 12pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">&#160;</span></p></ix:nonNumeric><div style="text-align:left"><table dir="ltr" style="border: none;border-collapse: collapse;margin-bottom: .001pt;margin-left: 0;margin-right: auto;"><tr style="height: 0.01in;"><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 22.75pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 1pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 1pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 361.65pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 1pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 1pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td></tr><tr><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 22.75pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; color: #000000;font-family: Wingdings;font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"><span style="white-space:pre-wrap; font-family: &quot;Wingdings&quot;">&#168;</span></span></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 361.65pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</span></p></td></tr></table></div><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 4.5pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; 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font-family: 'Times New Roman', 'serif';font-size: 1pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 1pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 450.5pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 1pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 1pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td></tr><tr><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 22.75pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; color: #000000;font-family: Wingdings;font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"><span style="white-space:pre-wrap; font-family: &quot;Wingdings&quot;">&#168;</span></span></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 450.5pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</span></p></td></tr></table></div><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 4.5pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; 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font-family: 'Times New Roman', 'serif';font-size: 1pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 1pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td></tr><tr><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 22.75pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><ix:nonNumeric name="dei:PreCommencementIssuerTenderOffer" id="ct-nonNumeric-5451c60f-2d18-478a-b701-787ea3a65a85" contextRef="Duration_4_8_2021_To_4_8_2021" format="ixt:booleanfalse"><span style="white-space:pre-wrap; color: #000000;font-family: Wingdings;font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"><span style="white-space:pre-wrap; font-family: &quot;Wingdings&quot;">&#168;</span></span></ix:nonNumeric></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 448.25pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</span></p></td></tr></table></div><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 12pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 12pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; background: #FFFFFF;color: #000000;font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">Securities registered pursuant to Section 12(b) of the Act:</span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 6pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 6pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">&#160;</span></p><div style="padding-left: 0;text-align:center"><table dir="ltr" style="border: none;border-collapse: collapse;margin-bottom: .001pt;margin-left: auto;margin-right: auto;width: 100%;"><tr style="height: 0.01in;"><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 32.6%;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 1pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 1pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 21.1%;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 1pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 1pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 46.3%;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 1pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 1pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td></tr><tr><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 32.6%;"><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;text-decoration: underline;">Title of each class</span></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 21.1%;"><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;text-decoration: underline;">Trading Symbol(s)</span></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 46.3%;"><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;text-decoration: underline;">Name of each exchange on which registered</span></p></td></tr><tr><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 32.6%;"><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><ix:nonNumeric name="dei:Security12bTitle" id="ct-nonNumeric-e0f4924b-df13-422b-a079-ca619c647cf2" contextRef="Duration_4_8_2021_To_4_8_2021"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">Common Stock, $.001 par value</span></ix:nonNumeric></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 21.1%;"><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><ix:nonNumeric name="dei:TradingSymbol" id="ct-nonNumeric-0a572ccf-e84a-423c-befd-05ca684d8f72" contextRef="Duration_4_8_2021_To_4_8_2021"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">ATRC</span></ix:nonNumeric></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 46.3%;"><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><ix:nonNumeric name="dei:SecurityExchangeName" id="ct-nonNumeric-a714e37a-5ecd-4cb3-8fc6-d33ce4f99905" contextRef="Duration_4_8_2021_To_4_8_2021"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">NASDAQ</span></ix:nonNumeric></p></td></tr></table></div><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: 6pt;margin-left: 0;margin-right: 0.23in;margin-top: 0;"><span style="white-space:pre-wrap; color: #000000;font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: 6pt;margin-left: 0;margin-right: 0.23in;margin-top: 0;"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (&#167;230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (&#167;240.12b-2 of this chapter). </span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: 5.25pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: justify;"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">Emerging growth company </span><ix:nonNumeric name="dei:EntityEmergingGrowthCompany" id="ct-nonNumeric-c9951565-f2ae-481d-ac5d-f5d945adbe39" contextRef="Duration_4_8_2021_To_4_8_2021" format="ixt:booleanfalse"><span style="white-space:pre-wrap; color: #000000;font-family: Wingdings;font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"><span style="white-space:pre-wrap; font-family: &quot;Wingdings&quot;">&#168;</span></span></ix:nonNumeric></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 12pt;line-height: 108%;margin-bottom: 5.25pt;margin-left: 0;margin-right: 0.37in;margin-top: 0;"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. </span><span style="white-space:pre-wrap; color: #000000;font-family: Wingdings;font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"><span style="white-space:pre-wrap; font-family: &quot;Wingdings&quot;">&#168;</span></span><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 12pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">&#160;</span></p><div style="border-bottom: solid #000000 1.0pt;border-left: none;border-right: none;border-top: none;padding-bottom: 0;"><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 12pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 12pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">&#160;</span><span style="white-space:pre-wrap; color: #000000;font-size: 10pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;"><br />&#8206;</span></p></div></div>
    <div><div class="footerContainer"></div><hr class="pageBreak" style="margin:18pt 0pt; ct-page-break: true; page-break-after: always;" /><div class="headerContainer"><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 12pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: right;"><span style="white-space:pre-wrap; white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 12pt;font-style: italic;font-weight: bold;margin: 0;padding: 0;"> </span></p></div></div>
    <div><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 12pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 12pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.</span></p><p dir="ltr" style="background: #FFFFFF;font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; color: #000000;font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p><p dir="ltr" style="background: #FFFFFF;font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">On April 8, 2021, the Company issued a press release announcing that B. Kristine Johnson has been elected to Board Chair effective as of the&#160;2021 Annual Meeting of Stockholders scheduled for May 20, 2021 (as may be postponed, continued or adjourned, the &#8220;Annual Meeting&#8221;). The press release also announces that Scott W. Drake and Mark R. Lanning will not stand for reelection to the Board at the Annual Meeting. A copy of the press release announcing these changes is attached hereto as Exhibit 99.1 and is incorporated herein by reference.</span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 13.5pt;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">Item 9.01&#160;&#160;&#160;&#160;Financial Statements and Exhibits.</span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 6pt;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">(d)&#160;&#160;&#160;&#160;Exhibits</span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p><div style="text-align:left"><table dir="ltr" style="border: none;border-collapse: collapse;margin-bottom: .001pt;margin-left: 0;margin-right: auto;width: 100%;"><tr style="height: 0.01in;"><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 8.5%;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 1pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span id="part_1_2_4" style="text-decoration: none;"></span><span id="item_1_31_1" style="text-decoration: none;"></span><span id="part_1_2_5" style="text-decoration: none;"></span><span id="item_1_47_1" style="text-decoration: none;"></span><span style="white-space:pre-wrap; font-size: 1pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: bottom;width: 1.1%;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 1pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 1pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 462.1pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 1pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 1pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td></tr><tr><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 8.5%;"><p dir="ltr" style="text-align:left; font-family: inherit;font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;text-decoration: underline;">No.</span></p></td><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: bottom;width: 1.1%;"><p dir="ltr" style="text-align:left; font-family: inherit;font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; color: #212529;font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 462.1pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;text-decoration: underline;">Description</span></p></td></tr><tr><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 8.5%;"><p dir="ltr" style="text-align:left; font-family: inherit;font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; color: #212529;font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: bottom;width: 1.1%;"><p dir="ltr" style="text-align:left; font-family: inherit;font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;text-indent: 0.06in;"><span style="white-space:pre-wrap; color: #212529;font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 462.1pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td></tr><tr><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 8.5%;"><p dir="ltr" style="text-align:left; font-family: inherit;font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; color: #212529;font-family: inherit;font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">99.1</span></p></td><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: bottom;width: 1.1%;"><p dir="ltr" style="text-align:left; font-family: inherit;font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;text-indent: 0.06in;"><span style="white-space:pre-wrap; color: #212529;font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 462.1pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><a href="atrc-20210408xex99_1.htm"><span style="white-space:pre-wrap; color: #0066CC;font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;text-decoration: underline;">Press Release dated April 8, 2021</span></a></p></td></tr><tr><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 8.5%;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; color: #212529;font-family: inherit;font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">104</span></p></td><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: bottom;width: 1.1%;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; color: #212529;font-family: inherit;font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">&#160;</span></p></td><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 462.1pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; color: #212529;font-family: inherit;font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">Cover Page Interactive Data File--the cover page XBRL tags are embedded within the Inline XBRL document.</span></p></td></tr></table></div><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 12pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 12pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 12pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; font-size: 12pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"><br />&#8206;</span><span id="part_1_2_6" style="text-decoration: none;"></span><span id="doc_1_2" style="text-decoration: none;"></span><span style="white-space:pre-wrap; font-size: 12pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></div>
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    <div><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 12pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 12pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">SIGNATURES</span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: 12pt;margin-left: 0;margin-right: 0;margin-top: 9pt;text-indent: 0.00in;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.</span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;text-indent: 0.00in;"><span style="white-space:pre-wrap; font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p><div style="padding-left: 0;text-align:left"><table dir="ltr" style="border: none;border-collapse: collapse;margin-bottom: .001pt;margin-left: 0;margin-right: auto;width: 100%;"><tr style="height: 0.01in;"><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 6.3%;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 1pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 1pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 44.6%;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 1pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 1pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 4.5%;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 1pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 1pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 44.6%;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 1pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 1pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td></tr><tr><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 6.3%;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 12pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 12pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 44.6%;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 12pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 12pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td colspan="2" style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 49.1%;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">ATRICURE,&#160;INC.</span></p></td></tr><tr><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 6.3%;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 12pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 12pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 44.6%;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 12pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 12pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 4.5%;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 12pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 12pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 44.6%;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 12pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 12pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td></tr><tr><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 6.3%;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">Dated:</span></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 44.6%;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">April 8, 2021</span></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 4.5%;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">By:</span></p></td><td style="border-bottom: solid windowtext 1.0pt;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 44.6%;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">/s/ Angela L. Wirick</span></p></td></tr><tr><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 6.3%;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 44.6%;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 4.5%;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top: solid windowtext 1.0pt;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 44.6%;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">Angela L. Wirick</span></p></td></tr><tr><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 6.3%;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 44.6%;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 4.5%;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 44.6%;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 10pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">Chief Financial Officer</span></p></td></tr></table></div><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 12pt;line-height: 108%;margin-bottom: .001pt;margin-left: 0;margin-right: 0;margin-top: 12pt;"><span style="white-space:pre-wrap; font-size: 12pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></div>
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{"company-data": {"conformed-name": "AtriCure, Inc.", "cik": "0001323885", "assigned-sic": "3841", "irs-number": "341940305", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-51470", "film-number": "21813804"}, "business-address": {"street1": "7555 INNOVATION WAY", "city": "MASON", "state": "OH", "zip": "45040", "phone": "513-755-4100"}, "mail-address": {"street1": "7555 INNOVATION WAY", "city": "MASON", "state": "OH", "zip": "45040"}}
atrc-20210408x8k
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549
FORM
8-K
CURRENT REPORT
PURSUANT TO SECTION 13 OR 15(d) of the
SECURITIES EXCHANGE ACT OF 1934
Date of Report (Date of earliest event reported):
April 8, 2021
AtriCure, Inc.
(Exact name of registrant as specified in charter)
Delaware
(State or other jurisdiction of incorporation)
000-51470
(Commission File Number)
34-1940305
(IRS Employer Identification No.)
7555 Innovation Way
,
Mason
OH
45040
(Address of Principal Executive Offices, and Zip Code)
(
513
)
755-4100
(Registrant's Telephone Number, Including Area Code)
Not Applicable
(Former name or former address, if changed since last report)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):
¨
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
¨
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
¨
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
¨
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Securities registered pursuant to Section 12(b) of the Act:
Title of each class
Trading Symbol(s)
Name of each exchange on which registered
Common Stock, $.001 par value
ATRC
NASDAQ
Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).
Emerging growth company
¨
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.
¨
‎
Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.
On April 8, 2021, the Company issued a press release announcing that B. Kristine Johnson has been elected to Board Chair effective as of the 2021 Annual Meeting of Stockholders scheduled for May 20, 2021 (as may be postponed, continued or adjourned, the "Annual Meeting"). The press release also announces that Scott W. Drake and Mark R. Lanning will not stand for reelection to the Board at the Annual Meeting. A copy of the press release announcing these changes is attached hereto as Exhibit 99.1 and is incorporated herein by reference.
Item 9.01    Financial Statements and Exhibits.
(d)    Exhibits
No.
Description
99.1
Press Release dated April 8, 2021
104
Cover Page Interactive Data File--the cover page XBRL tags are embedded within the Inline XBRL document.
‎
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
ATRICURE, INC.
Dated:
April 8, 2021
By:
/s/ Angela L. Wirick
Angela L. Wirick
Chief Financial Officer