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  <title>8-K</title>
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  <div style="display:none;"><ix:header><ix:hidden><ix:nonNumeric id="F_af380e71-cbf2-4cd6-8ca2-5760a7b84c6c" name="dei:AmendmentFlag" contextRef="C_4c2dcbb2-f7bd-4bf6-9082-394b2bea4c16" format="ixt:fixed-false">false</ix:nonNumeric><ix:nonNumeric id="F_56e4367a-c5b0-4c69-83c6-5fe6d0e76f5a" name="dei:EntityCentralIndexKey" contextRef="C_4c2dcbb2-f7bd-4bf6-9082-394b2bea4c16">0001382101</ix:nonNumeric></ix:hidden><ix:references><link:schemaRef xlink:type="simple" xlink:href="stro-20240513.xsd"/></ix:references><ix:resources><xbrli:context id="C_4c2dcbb2-f7bd-4bf6-9082-394b2bea4c16"><xbrli:entity><xbrli:identifier scheme="http://www.sec.gov/CIK">0001382101</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2024-05-13</xbrli:startDate><xbrli:endDate>2024-05-13</xbrli:endDate></xbrli:period></xbrli:context></ix:resources></ix:header></div>
  <div style="padding-top:0.5in;min-height:0.88in;box-sizing:border-box;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">&#160;</span></p></div>
  <p style="padding-bottom:1pt;font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;border-bottom:2.25pt double;text-align:left;"><span style="white-space:pre-wrap;font-size:6pt;font-family:Arial;min-width:fit-content;">&#160;</span></p>
  <p style="font-size:10pt;margin-top:6pt;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:18pt;font-family:Times New Roman;min-width:fit-content;">UNITED STATES</span></p>
  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:18pt;font-family:Times New Roman;min-width:fit-content;">SECURITIES AND EXCHANGE COMMISSION</span></p>
  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:12pt;font-family:Times New Roman;min-width:fit-content;">Washington, D.C. 20549</span><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:12pt;font-family:Times New Roman;min-width:fit-content;"> </span></p>
  <p style="margin-left:40%;padding-bottom:1pt;font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;border-bottom:1pt solid;margin-right:40%;text-align:center;"><span style="white-space:pre-wrap;font-size:9pt;font-family:Times New Roman;min-width:fit-content;">&#160;</span></p>
  <p style="font-size:10pt;margin-top:9pt;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:18pt;font-family:Times New Roman;min-width:fit-content;">FORM </span><span style="font-size:18pt;font-family:Times New Roman;"><ix:nonNumeric id="F_233a482d-adec-431a-b0d6-4b0106a48ee3" contextRef="C_4c2dcbb2-f7bd-4bf6-9082-394b2bea4c16" name="dei:DocumentType"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:18pt;font-family:Times New Roman;min-width:fit-content;">8-K</span></ix:nonNumeric></span><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:18pt;font-family:Times New Roman;min-width:fit-content;"> </span></p>
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  <p style="font-size:10pt;margin-top:9pt;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:12pt;font-family:Times New Roman;min-width:fit-content;">CURRENT REPORT</span><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:12pt;font-family:Times New Roman;min-width:fit-content;"> </span></p>
  <p style="font-size:10pt;margin-top:7pt;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:12pt;font-family:Times New Roman;min-width:fit-content;">Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934</span><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:12pt;font-family:Times New Roman;min-width:fit-content;"> </span></p>
  <p style="font-size:10pt;margin-top:9pt;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:12pt;font-family:Times New Roman;min-width:fit-content;">Date of Report (Date of earliest event reported): </span><span style="font-size:12pt;font-family:Times New Roman;"><ix:nonNumeric id="F_209a4e17-bb9e-4e24-9fed-93e717deecaf" contextRef="C_4c2dcbb2-f7bd-4bf6-9082-394b2bea4c16" name="dei:DocumentPeriodEndDate" format="ixt:date-monthname-day-year-en"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:12pt;font-family:Times New Roman;min-width:fit-content;">May 13, 2024</span></ix:nonNumeric></span></p>
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    <td style="vertical-align:bottom;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span><ix:nonNumeric id="F_eb916d92-27bb-409c-9cd1-0192ae44152f" contextRef="C_4c2dcbb2-f7bd-4bf6-9082-394b2bea4c16" name="dei:EntityIncorporationStateCountryCode" format="ixt-sec:stateprovnameen"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;min-width:fit-content;">Delaware</span></ix:nonNumeric></span></p></td>
    <td style="vertical-align:bottom;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span><ix:nonNumeric id="F_2983e8ca-c10f-4ecf-a205-6f12ebefac0b" contextRef="C_4c2dcbb2-f7bd-4bf6-9082-394b2bea4c16" name="dei:EntityFileNumber"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;min-width:fit-content;">001-38662</span></ix:nonNumeric></span></p></td>
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    <td style="vertical-align:bottom;"><p style="font-size:8pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;min-width:fit-content;">(State or other jurisdiction</span></p><p style="font-size:8pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;min-width:fit-content;">of Incorporation)</span></p></td>
    <td style="vertical-align:bottom;"><p style="font-size:8pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;min-width:fit-content;">(Commission</span><span style="color:#000000;white-space:pre-wrap;font-weight:bold;min-width:fit-content;"> </span></p><p style="font-size:8pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;min-width:fit-content;">File Number)</span></p></td>
    <td style="vertical-align:bottom;"><p style="font-size:8pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;min-width:fit-content;">(IRS Employer</span></p><p style="font-size:8pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;min-width:fit-content;">Identification No.)</span></p></td>
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  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="font-size:10pt;font-family:Times New Roman;"><ix:nonNumeric id="F_fbf511d5-628f-4215-ba7c-683f3c4d1cd5" contextRef="C_4c2dcbb2-f7bd-4bf6-9082-394b2bea4c16" name="dei:EntityAddressAddressLine1"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">111 Oyster Point Blvd,</span></ix:nonNumeric></span><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:10pt;font-family:Times New Roman;min-width:fit-content;"> </span></p>
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  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:8pt;font-family:Times New Roman;min-width:fit-content;">(Address of principal executive offices) (Zip Code)</span></p>
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  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:8pt;font-family:Times New Roman;min-width:fit-content;">(Registrant&#8217;s telephone number, including area code)</span><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:8pt;font-family:Times New Roman;min-width:fit-content;"> </span></p>
  <p style="font-size:10pt;margin-top:9pt;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">Not Applicable</span></p>
  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:8pt;font-family:Times New Roman;min-width:fit-content;">(Former name or former address, if changed since last report)</span><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:8pt;font-family:Times New Roman;min-width:fit-content;"> </span></p>
  <p style="margin-left:40%;padding-bottom:1pt;font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;border-bottom:1pt solid;margin-right:40%;text-align:center;"><span style="white-space:pre-wrap;font-size:9pt;font-family:Times New Roman;min-width:fit-content;">&#160;</span></p>
  <p style="font-size:10pt;margin-top:9pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">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:</span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;"> </span></p>
  <p style="text-indent:-4.749%;padding-left:4.533%;font-size:10pt;margin-top:6pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="font-size:10pt;font-family:Times New Roman;"><ix:nonNumeric id="F_6696b5d5-de0a-4505-be7e-c28d7717a928" contextRef="C_4c2dcbb2-f7bd-4bf6-9082-394b2bea4c16" name="dei:WrittenCommunications" format="ixt-sec:boolballotbox"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">&#9744;</span></ix:nonNumeric></span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;"> </span></p>
  <p style="text-indent:-4.749%;padding-left:4.533%;font-size:10pt;margin-top:6pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="font-size:10pt;font-family:Times New Roman;"><ix:nonNumeric id="F_343e5029-6b8c-4aac-b5e7-cfc48f29206a" contextRef="C_4c2dcbb2-f7bd-4bf6-9082-394b2bea4c16" name="dei:SolicitingMaterial" format="ixt-sec:boolballotbox"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">&#9744;</span></ix:nonNumeric></span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;"> </span></p>
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  <p style="font-size:10pt;margin-top:9pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">Securities registered pursuant to Section 12(b) of the Act:</span></p>
  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">&#160;</span></p>
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    <td style="vertical-align:top;border-bottom:0.5pt solid #ffffff03;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="white-space:pre-wrap;min-width:fit-content;">&#160;</span></p></td>
    <td style="vertical-align:top;border-bottom:0.5pt solid;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;min-width:fit-content;">Trading Symbol(s)</span></p></td>
    <td style="vertical-align:top;border-bottom:0.5pt solid #ffffff03;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="white-space:pre-wrap;min-width:fit-content;">&#160;</span></p></td>
    <td style="vertical-align:bottom;border-bottom:0.5pt solid;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;min-width:fit-content;">Name of each exchange on which registered</span></p></td>
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    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span><ix:nonNumeric id="F_1d3449db-7ea0-4d9a-9693-1f931be45b98" contextRef="C_4c2dcbb2-f7bd-4bf6-9082-394b2bea4c16" name="dei:Security12bTitle"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">Common Stock, $0.001 par value</span></ix:nonNumeric></span></p></td>
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="white-space:pre-wrap;min-width:fit-content;">&#160;</span></p></td>
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span><ix:nonNumeric id="F_1056a9ed-ef87-4577-9e00-4317d08c06a3" contextRef="C_4c2dcbb2-f7bd-4bf6-9082-394b2bea4c16" name="dei:TradingSymbol"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">STRO</span></ix:nonNumeric></span></p></td>
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="white-space:pre-wrap;min-width:fit-content;">&#160;</span></p></td>
    <td style="vertical-align:top;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span><ix:nonNumeric id="F_e42e3d53-41c7-4e18-9ba7-605734d166a4" contextRef="C_4c2dcbb2-f7bd-4bf6-9082-394b2bea4c16" name="dei:SecurityExchangeName" format="ixt-sec:exchnameen"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">The Nasdaq Global Market</span></ix:nonNumeric></span></p></td>
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  <p style="font-size:10pt;margin-top:9pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (&#167;&#8201;230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (&#167;&#8201;240.12b-2 of this chapter).</span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;"> </span></p>
  <p style="margin-left:66.667%;font-size:10pt;margin-top:6pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">Emerging growth company </span><span style="font-size:10pt;font-family:Times New Roman;"><ix:nonNumeric id="F_9530955a-c84b-4076-ad0c-c02117048bdd" contextRef="C_4c2dcbb2-f7bd-4bf6-9082-394b2bea4c16" name="dei:EntityEmergingGrowthCompany" format="ixt-sec:boolballotbox"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">&#9744;</span></ix:nonNumeric></span></p>
  <p style="font-size:10pt;margin-top:6pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">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. &#9744;</span></p>
  <p style="padding-bottom:1pt;font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;border-bottom:2.25pt double;text-align:left;"><span style="white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">&#160;</span></p>
  <div style="flex-direction:column;display:flex;padding-bottom:0.5in;justify-content:flex-end;box-sizing:border-box;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;font-size:11pt;font-family:'Calibri',sans-serif;min-width:fit-content;">&#160;</span></p></div>
  <hr style="page-break-after:always;"/>
  <div style="padding-top:0.5in;min-height:0.88in;box-sizing:border-box;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">&#160;</span></p></div>
  <p style="text-indent:-7.143%;padding-left:6.667%;font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">Item 2.02.	Results of Operations and Financial Condition.</span></p>
  <p style="text-indent:5.147%;font-size:10pt;margin-top:6pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">On May 13, 2024, Sutro Biopharma, Inc. (the &#8220;</span><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:italic;min-width:fit-content;">Company</span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">&#8221;) issued a press release announcing its financial results for the quarter ended March 31, 2024. A copy of the press release is attached as Exhibit 99.1 to this report.</span></p>
  <p style="text-indent:5.147%;font-size:10pt;margin-top:12pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">The information furnished with Item 2.02 of this report, including Exhibit 99.1, is being furnished and shall not be deemed &#8220;filed&#8221; for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the &#8220;</span><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:italic;min-width:fit-content;">Exchange Act</span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">&#8221;), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference into any other filing under the Exchange Act or under the Securities Act of 1933, as amended (the &#8220;</span><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:italic;min-width:fit-content;">Securities Act</span><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">&#8221;), except as expressly set forth by specific reference in such a filing.</span></p>
  <p style="text-indent:-7.143%;padding-left:6.667%;font-size:10pt;margin-top:12pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">Item 9.01.	Financial Statements and Exhibits</span></p>
  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;" id="part_1_2_3">&#160;</p>
  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">(d) Exhibits.</span></p>
  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:10pt;font-family:Times New Roman;min-width:fit-content;"> </span></p>
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    <td style="padding-left:0.042in;vertical-align:bottom;padding-right:0.042in;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;border-bottom:1pt solid;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;min-width:fit-content;">Exhibit<br/>No.</span></p></td>
    <td style="padding-left:0.042in;vertical-align:bottom;padding-right:0.042in;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;"> </span></p></td>
    <td style="padding-left:0.042in;vertical-align:bottom;padding-right:0.042in;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;border-bottom:1pt solid;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;min-width:fit-content;">Description</span></p></td>
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    <td style="padding-left:0.042in;vertical-align:middle;padding-right:0.042in;"><p style="font-size:6pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;">&#160;</span></p></td>
    <td colspan="2" style="padding-left:0.042in;vertical-align:middle;padding-right:0.042in;"><p style="font-size:6pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;">&#160;</span></p></td>
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    <td style="padding-left:0.042in;vertical-align:middle;padding-right:0.042in;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">99.1</span></p></td>
    <td style="padding-left:0.042in;vertical-align:middle;padding-right:0.042in;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;"> </span></p></td>
    <td style="padding-left:0.042in;vertical-align:middle;padding-right:0.042in;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><a href="stro-ex99_1.htm"><span style="color:#0000ff;white-space:pre-wrap;text-decoration:underline;min-width:fit-content;">Press release issued by Sutro Biopharma, Inc. regarding its financial results for the period ended March 31, 2024, dated May 13, 2024.</span></a></p></td>
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    <td style="padding-left:0.042in;vertical-align:middle;padding-right:0.042in;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">104</span></p></td>
    <td style="padding-left:0.042in;vertical-align:middle;padding-right:0.042in;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;min-width:fit-content;">&#160;</span></p></td>
    <td style="padding-left:0.042in;vertical-align:middle;padding-right:0.042in;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">Cover Page Interactive Data File (embedded within the Inline XBRL document)</span></p></td>
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  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">&#160;</span></p>
  <div style="flex-direction:column;display:flex;padding-bottom:0.5in;justify-content:flex-end;box-sizing:border-box;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;font-size:11pt;font-family:'Calibri',sans-serif;min-width:fit-content;">&#160;</span></p></div>
  <hr style="page-break-after:always;"/>
  <div style="padding-top:0.5in;min-height:0.88in;box-sizing:border-box;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">&#160;</span></p></div>
  <p style="font-size:10pt;margin-top:6pt;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">SIGNATURE</span></p>
  <p style="font-size:10pt;margin-top:12pt;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.</span></p>
  <p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="white-space:pre-wrap;font-size:12pt;font-family:Times New Roman;min-width:fit-content;">&#160;</span></p>
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    <td style="width:59.96%;"/>
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    <td style="padding-top:0.01in;vertical-align:top;padding-right:0.01in;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;"> </span></p></td>
    <td colspan="2" style="padding-top:0.01in;vertical-align:bottom;padding-right:0.01in;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;min-width:fit-content;">Sutro Biopharma, Inc.</span></p></td>
   </tr>
   <tr style="height:10pt;background-color:#ffffff;white-space:pre-wrap;word-break:break-word;">
    <td style="padding-top:0.01in;vertical-align:middle;padding-right:0.01in;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;"> </span></p></td>
    <td style="padding-top:0.01in;vertical-align:bottom;padding-right:0.01in;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;"> </span></p></td>
    <td style="padding-top:0.01in;vertical-align:bottom;padding-right:0.01in;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;"> </span></p></td>
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   <tr style="height:12.95pt;background-color:#ffffff;white-space:pre-wrap;word-break:break-word;">
    <td style="padding-top:0.01in;vertical-align:bottom;padding-right:0.01in;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">Date: May 13, 2024</span></p></td>
    <td style="padding-top:0.01in;vertical-align:top;padding-right:0.01in;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">By:</span></p></td>
    <td style="padding-top:0.01in;vertical-align:bottom;border-bottom:0.25pt solid #000000;padding-right:0.01in;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;">/s/ Edward Albini</span></p></td>
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   <tr style="height:10pt;background-color:#ffffff;white-space:pre-wrap;word-break:break-word;">
    <td style="padding-top:0.01in;vertical-align:bottom;padding-right:0.01in;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;"> </span></p></td>
    <td style="padding-top:0.01in;vertical-align:middle;padding-right:0.01in;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;min-width:fit-content;"> </span></p></td>
    <td style="padding-top:0.01in;vertical-align:bottom;padding-right:0.01in;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;min-width:fit-content;">Edward Albini</span></p></td>
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    <td style="padding-top:0.01in;vertical-align:bottom;padding-right:0.01in;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;min-width:fit-content;"> </span></p></td>
    <td style="padding-top:0.01in;vertical-align:bottom;padding-right:0.01in;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:left;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;min-width:fit-content;"> </span></p></td>
    <td style="padding-top:0.01in;vertical-align:bottom;padding-right:0.01in;text-align:left;"><p style="font-size:10pt;margin-top:0;font-family:Times New Roman;margin-bottom:0;text-align:center;"><span style="color:#000000;white-space:pre-wrap;font-weight:bold;min-width:fit-content;">Chief Financial Officer</span></p></td>
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  <p style="font-size:10pt;margin-top:12pt;font-family:Times New Roman;margin-bottom:0;text-align:right;"><span style="white-space:pre-wrap;font-size:10pt;font-family:Times New Roman;min-width:fit-content;">&#160;</span></p>
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8-K
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 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):
May 13, 2024
SUTRO BIOPHARMA, INC.
(Exact name of registrant as specified in its charter)
Delaware
001-38662
47-0926186
(State or other jurisdiction
of Incorporation)
(Commission
File Number)
(IRS Employer
Identification No.)
111 Oyster Point Blvd,
South San Francisco
,
California
,
94080
(Address of principal executive offices) (Zip Code)
(650)
881-6500
(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:
☐
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, $0.001 par value
STRO
The Nasdaq Global Market
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 2.02.	Results of Operations and Financial Condition.
On May 13, 2024, Sutro Biopharma, Inc. (the "
Company
") issued a press release announcing its financial results for the quarter ended March 31, 2024. A copy of the press release is attached as Exhibit 99.1 to this report.
The information furnished with Item 2.02 of this report, including Exhibit 99.1, is being furnished and shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "
Exchange Act
"), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference into any other filing under the Exchange Act or under the Securities Act of 1933, as amended (the "
Securities Act
"), except as expressly set forth by specific reference in such a filing.
Item 9.01.	Financial Statements and Exhibits
(d) Exhibits.
Exhibit
No.
Description
99.1
Press release issued by Sutro Biopharma, Inc. regarding its financial results for the period ended March 31, 2024, dated May 13, 2024.
104
Cover Page Interactive Data File (embedded within the Inline XBRL document)
SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
Sutro Biopharma, Inc.
Date: May 13, 2024
By:
/s/ Edward Albini
Edward Albini
Chief Financial Officer