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<title>mgni-20220322</title></head><body><div style="display:none"><ix:header><ix:hidden><ix:nonNumeric contextRef="iae1dc024cbbe4331beee12a2426bf97b_D20220322-20220322" name="dei:EntityCentralIndexKey" id="id3VybDovL2RvY3MudjEvZG9jOjhmY2FmNThkN2U1OTQ0MTU4ZmY3ODA4MGRkNzhlZGQ2L3NlYzo4ZmNhZjU4ZDdlNTk0NDE1OGZmNzgwODBkZDc4ZWRkNl80L2ZyYWc6MjRlYjk1OTRmOWQzNGMzMmI1MDAzM2MwMzg1N2IzZjkvdGFibGU6MmEwMDM3N2JiNTQ0NGY1OWE1MTE2YzI3NTQzYjM3MDcvdGFibGVyYW5nZToyYTAwMzc3YmI1NDQ0ZjU5YTUxMTZjMjc1NDNiMzcwN18yLTEtMS0xLTU0NDIx_5c3b9da6-e11a-462c-919a-e52b6d7bb8ba">0001595974</ix:nonNumeric><ix:nonNumeric contextRef="iae1dc024cbbe4331beee12a2426bf97b_D20220322-20220322" name="dei:AmendmentFlag" format="ixt:fixed-false" 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xlink:href="mgni-20220322.xsd"></link:schemaRef></ix:references><ix:resources><xbrli:context id="iae1dc024cbbe4331beee12a2426bf97b_D20220322-20220322"><xbrli:entity><xbrli:identifier scheme="http://www.sec.gov/CIK">0001595974</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2022-03-22</xbrli:startDate><xbrli:endDate>2022-03-22</xbrli:endDate></xbrli:period></xbrli:context></ix:resources></ix:header></div><div id="i8fcaf58d7e5944158ff78080dd78edd6_1"></div><div style="min-height:43pt;width:100%"><div style="text-align:right"><span><br/></span></div></div><div style="text-align:center"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:14pt;font-weight:700;line-height:120%">UNITED STATES</span></div><div style="text-align:center"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:14pt;font-weight:700;line-height:120%">SECURITIES AND EXCHANGE COMMISSION</span></div><div style="text-align:center"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Washington, D.C. 20549</span></div><div style="margin-top:10pt;text-align:center"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:14pt;font-weight:700;line-height:201%">FORM <ix:nonNumeric contextRef="iae1dc024cbbe4331beee12a2426bf97b_D20220322-20220322" name="dei:DocumentType" id="id3VybDovL2RvY3MudjEvZG9jOjhmY2FmNThkN2U1OTQ0MTU4ZmY3ODA4MGRkNzhlZGQ2L3NlYzo4ZmNhZjU4ZDdlNTk0NDE1OGZmNzgwODBkZDc4ZWRkNl8xL2ZyYWc6ZjViYmI2OGY1YjBmNDg3Yjg0OGFlOTA0YjIzOWFkYTEvdGV4dHJlZ2lvbjpmNWJiYjY4ZjViMGY0ODdiODQ4YWU5MDRiMjM5YWRhMV8xNDM5_bce949a1-42c9-4428-b358-ee4e2f9a65f9">8-K</ix:nonNumeric></span></div><div style="margin-top:5pt;text-align:center"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">CURRENT REPORT</span></div><div style="text-align:center"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">Pursuant to Section&#160;13 OR 15(d) of the Securities Exchange Act of 1934</span></div><div style="margin-top:5pt;text-align:center"><span><br/></span></div><div style="text-align:center"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%"><ix:nonNumeric contextRef="iae1dc024cbbe4331beee12a2426bf97b_D20220322-20220322" name="dei:DocumentPeriodEndDate" format="ixt:date-monthname-day-year-en" id="id3VybDovL2RvY3MudjEvZG9jOjhmY2FmNThkN2U1OTQ0MTU4ZmY3ODA4MGRkNzhlZGQ2L3NlYzo4ZmNhZjU4ZDdlNTk0NDE1OGZmNzgwODBkZDc4ZWRkNl8xL2ZyYWc6ZjViYmI2OGY1YjBmNDg3Yjg0OGFlOTA0YjIzOWFkYTEvdGV4dHJlZ2lvbjpmNWJiYjY4ZjViMGY0ODdiODQ4YWU5MDRiMjM5YWRhMV8xNzM_4311f9d2-b114-45a9-b40c-6e228fd05cfd">March 22, 2022</ix:nonNumeric></span></div><div style="text-align:center"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Date of Report (Date of earliest event reported)</span></div><div><span><br/></span></div><div style="margin-top:5pt;text-align:center"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:16pt;font-weight:700;line-height:120%"><ix:nonNumeric contextRef="iae1dc024cbbe4331beee12a2426bf97b_D20220322-20220322" name="dei:EntityRegistrantName" id="id3VybDovL2RvY3MudjEvZG9jOjhmY2FmNThkN2U1OTQ0MTU4ZmY3ODA4MGRkNzhlZGQ2L3NlYzo4ZmNhZjU4ZDdlNTk0NDE1OGZmNzgwODBkZDc4ZWRkNl8xL2ZyYWc6ZjViYmI2OGY1YjBmNDg3Yjg0OGFlOTA0YjIzOWFkYTEvdGV4dHJlZ2lvbjpmNWJiYjY4ZjViMGY0ODdiODQ4YWU5MDRiMjM5YWRhMV8xNDQw_fd6e2f27-7683-4809-a771-7874a7ad0fd2">MAGNITE, INC.</ix:nonNumeric></span></div><div style="text-align:center"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">(Exact name of registrant as specified in its charter)</span></div><div><span><br/></span></div><div><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:99.755%"><tr><td style="width:1.0%"></td><td style="width:32.233%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:32.233%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:32.234%"></td><td style="width:0.1%"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:middle"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%"><ix:nonNumeric contextRef="iae1dc024cbbe4331beee12a2426bf97b_D20220322-20220322" name="dei:EntityIncorporationStateCountryCode" format="ixt-sec:stateprovnameen" id="id3VybDovL2RvY3MudjEvZG9jOjhmY2FmNThkN2U1OTQ0MTU4ZmY3ODA4MGRkNzhlZGQ2L3NlYzo4ZmNhZjU4ZDdlNTk0NDE1OGZmNzgwODBkZDc4ZWRkNl8xL2ZyYWc6ZjViYmI2OGY1YjBmNDg3Yjg0OGFlOTA0YjIzOWFkYTEvdGFibGU6ZjRkNDc0Y2Y0Yjk5NDZkNDg5YTQ0MmI5MWE4YTU0MGMvdGFibGVyYW5nZTpmNGQ0NzRjZjRiOTk0NmQ0ODlhNDQyYjkxYThhNTQwY18wLTAtMS0xLTU0NDIx_9f40d21a-1559-4d0d-ae93-992d5af58dc3">Delaware</ix:nonNumeric></span></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="padding-left:11.25pt;padding-right:11.25pt;text-align:center"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%"><ix:nonNumeric contextRef="iae1dc024cbbe4331beee12a2426bf97b_D20220322-20220322" name="dei:EntityFileNumber" id="id3VybDovL2RvY3MudjEvZG9jOjhmY2FmNThkN2U1OTQ0MTU4ZmY3ODA4MGRkNzhlZGQ2L3NlYzo4ZmNhZjU4ZDdlNTk0NDE1OGZmNzgwODBkZDc4ZWRkNl8xL2ZyYWc6ZjViYmI2OGY1YjBmNDg3Yjg0OGFlOTA0YjIzOWFkYTEvdGFibGU6ZjRkNDc0Y2Y0Yjk5NDZkNDg5YTQ0MmI5MWE4YTU0MGMvdGFibGVyYW5nZTpmNGQ0NzRjZjRiOTk0NmQ0ODlhNDQyYjkxYThhNTQwY18wLTEtMS0xLTU0NDIx_0ef56e11-f11c-4c50-b4e1-cfd5b00c2a00">001-36384</ix:nonNumeric></span></div></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:middle"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%"><ix:nonNumeric contextRef="iae1dc024cbbe4331beee12a2426bf97b_D20220322-20220322" name="dei:EntityTaxIdentificationNumber" id="id3VybDovL2RvY3MudjEvZG9jOjhmY2FmNThkN2U1OTQ0MTU4ZmY3ODA4MGRkNzhlZGQ2L3NlYzo4ZmNhZjU4ZDdlNTk0NDE1OGZmNzgwODBkZDc4ZWRkNl8xL2ZyYWc6ZjViYmI2OGY1YjBmNDg3Yjg0OGFlOTA0YjIzOWFkYTEvdGFibGU6ZjRkNDc0Y2Y0Yjk5NDZkNDg5YTQ0MmI5MWE4YTU0MGMvdGFibGVyYW5nZTpmNGQ0NzRjZjRiOTk0NmQ0ODlhNDQyYjkxYThhNTQwY18wLTItMS0xLTU0NDIx_712b4887-f012-4692-8601-a64db0608bb9">20-8881738</ix:nonNumeric></span></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:middle"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(State or other jurisdiction of incorporation)</span></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="padding-left:11.25pt;padding-right:11.25pt;text-align:center"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(Commission File Number)</span></div></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(IRS Employer Identification No.)</span></td></tr><tr style="height:5pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr><tr><td colspan="9" style="padding:2px 1pt;text-align:left;vertical-align:middle"><div style="text-align:center"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%"><ix:nonNumeric contextRef="iae1dc024cbbe4331beee12a2426bf97b_D20220322-20220322" name="dei:EntityAddressAddressLine1" id="id3VybDovL2RvY3MudjEvZG9jOjhmY2FmNThkN2U1OTQ0MTU4ZmY3ODA4MGRkNzhlZGQ2L3NlYzo4ZmNhZjU4ZDdlNTk0NDE1OGZmNzgwODBkZDc4ZWRkNl8xL2ZyYWc6ZjViYmI2OGY1YjBmNDg3Yjg0OGFlOTA0YjIzOWFkYTEvdGFibGU6ZjRkNDc0Y2Y0Yjk5NDZkNDg5YTQ0MmI5MWE4YTU0MGMvdGFibGVyYW5nZTpmNGQ0NzRjZjRiOTk0NmQ0ODlhNDQyYjkxYThhNTQwY18zLTAtMS0xLTU0NDIxL3RleHRyZWdpb246YjcxYTY4MWEyYjRiNDMxMTg5ZDJjNGRiMGZkMjNkY2FfNA_206854db-87a1-4eaf-a1ee-3e47a10a2d0a">1250 Broadway,</ix:nonNumeric> <ix:nonNumeric contextRef="iae1dc024cbbe4331beee12a2426bf97b_D20220322-20220322" name="dei:EntityAddressAddressLine2" id="id3VybDovL2RvY3MudjEvZG9jOjhmY2FmNThkN2U1OTQ0MTU4ZmY3ODA4MGRkNzhlZGQ2L3NlYzo4ZmNhZjU4ZDdlNTk0NDE1OGZmNzgwODBkZDc4ZWRkNl8xL2ZyYWc6ZjViYmI2OGY1YjBmNDg3Yjg0OGFlOTA0YjIzOWFkYTEvdGFibGU6ZjRkNDc0Y2Y0Yjk5NDZkNDg5YTQ0MmI5MWE4YTU0MGMvdGFibGVyYW5nZTpmNGQ0NzRjZjRiOTk0NmQ0ODlhNDQyYjkxYThhNTQwY18zLTAtMS0xLTU0NDIxL3RleHRyZWdpb246YjcxYTY4MWEyYjRiNDMxMTg5ZDJjNGRiMGZkMjNkY2FfNw_f430cb93-b56e-497f-8fdc-9fc1b48e098a">15th Floor</ix:nonNumeric></span></div></td></tr><tr><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr><td colspan="9" style="padding:2px 1pt;text-align:left;vertical-align:middle"><div style="text-align:center"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%"><ix:nonNumeric contextRef="iae1dc024cbbe4331beee12a2426bf97b_D20220322-20220322" name="dei:EntityAddressCityOrTown" id="id3VybDovL2RvY3MudjEvZG9jOjhmY2FmNThkN2U1OTQ0MTU4ZmY3ODA4MGRkNzhlZGQ2L3NlYzo4ZmNhZjU4ZDdlNTk0NDE1OGZmNzgwODBkZDc4ZWRkNl8xL2ZyYWc6ZjViYmI2OGY1YjBmNDg3Yjg0OGFlOTA0YjIzOWFkYTEvdGFibGU6ZjRkNDc0Y2Y0Yjk5NDZkNDg5YTQ0MmI5MWE4YTU0MGMvdGFibGVyYW5nZTpmNGQ0NzRjZjRiOTk0NmQ0ODlhNDQyYjkxYThhNTQwY181LTAtMS0xLTU0NDIxL3RleHRyZWdpb246MWMyZGRjZjVjYjNhNDQ4ODkxMzdjMzBhYzk2ZWE3MGRfNA_f67ecae1-2ac7-44d4-98d9-d4b97030d048">New York,</ix:nonNumeric> <ix:nonNumeric contextRef="iae1dc024cbbe4331beee12a2426bf97b_D20220322-20220322" name="dei:EntityAddressStateOrProvince" format="ixt-sec:stateprovnameen" id="id3VybDovL2RvY3MudjEvZG9jOjhmY2FmNThkN2U1OTQ0MTU4ZmY3ODA4MGRkNzhlZGQ2L3NlYzo4ZmNhZjU4ZDdlNTk0NDE1OGZmNzgwODBkZDc4ZWRkNl8xL2ZyYWc6ZjViYmI2OGY1YjBmNDg3Yjg0OGFlOTA0YjIzOWFkYTEvdGFibGU6ZjRkNDc0Y2Y0Yjk5NDZkNDg5YTQ0MmI5MWE4YTU0MGMvdGFibGVyYW5nZTpmNGQ0NzRjZjRiOTk0NmQ0ODlhNDQyYjkxYThhNTQwY181LTAtMS0xLTU0NDIxL3RleHRyZWdpb246MWMyZGRjZjVjYjNhNDQ4ODkxMzdjMzBhYzk2ZWE3MGRfNw_d434d3b6-93e7-4732-808e-1ec69bdf702d">New York</ix:nonNumeric> <ix:nonNumeric contextRef="iae1dc024cbbe4331beee12a2426bf97b_D20220322-20220322" name="dei:EntityAddressPostalZipCode" id="id3VybDovL2RvY3MudjEvZG9jOjhmY2FmNThkN2U1OTQ0MTU4ZmY3ODA4MGRkNzhlZGQ2L3NlYzo4ZmNhZjU4ZDdlNTk0NDE1OGZmNzgwODBkZDc4ZWRkNl8xL2ZyYWc6ZjViYmI2OGY1YjBmNDg3Yjg0OGFlOTA0YjIzOWFkYTEvdGFibGU6ZjRkNDc0Y2Y0Yjk5NDZkNDg5YTQ0MmI5MWE4YTU0MGMvdGFibGVyYW5nZTpmNGQ0NzRjZjRiOTk0NmQ0ODlhNDQyYjkxYThhNTQwY181LTAtMS0xLTU0NDIxL3RleHRyZWdpb246MWMyZGRjZjVjYjNhNDQ4ODkxMzdjMzBhYzk2ZWE3MGRfMTA_5d3f6443-94df-4ac1-a466-60e224f44619">10001</ix:nonNumeric></span></div></td></tr><tr><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr><td colspan="9" style="padding:2px 1pt;text-align:center;vertical-align:middle"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(Address of principal executive offices, including zip code)</span></td></tr><tr style="height:5pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr><tr><td colspan="9" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="text-align:center"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">(<ix:nonNumeric contextRef="iae1dc024cbbe4331beee12a2426bf97b_D20220322-20220322" name="dei:CityAreaCode" id="id3VybDovL2RvY3MudjEvZG9jOjhmY2FmNThkN2U1OTQ0MTU4ZmY3ODA4MGRkNzhlZGQ2L3NlYzo4ZmNhZjU4ZDdlNTk0NDE1OGZmNzgwODBkZDc4ZWRkNl8xL2ZyYWc6ZjViYmI2OGY1YjBmNDg3Yjg0OGFlOTA0YjIzOWFkYTEvdGFibGU6ZjRkNDc0Y2Y0Yjk5NDZkNDg5YTQ0MmI5MWE4YTU0MGMvdGFibGVyYW5nZTpmNGQ0NzRjZjRiOTk0NmQ0ODlhNDQyYjkxYThhNTQwY185LTAtMS0xLTU0NDIxL3RleHRyZWdpb246NjNlZWY0MDdiMDk0NDBiNjhjM2Y0MTk3YjVlMDYzZTFfMzI5ODUzNDg4MzM1Mg_d7245d6b-db0e-4603-a483-8433d90a13ae">212</ix:nonNumeric>) <ix:nonNumeric contextRef="iae1dc024cbbe4331beee12a2426bf97b_D20220322-20220322" name="dei:LocalPhoneNumber" id="id3VybDovL2RvY3MudjEvZG9jOjhmY2FmNThkN2U1OTQ0MTU4ZmY3ODA4MGRkNzhlZGQ2L3NlYzo4ZmNhZjU4ZDdlNTk0NDE1OGZmNzgwODBkZDc4ZWRkNl8xL2ZyYWc6ZjViYmI2OGY1YjBmNDg3Yjg0OGFlOTA0YjIzOWFkYTEvdGFibGU6ZjRkNDc0Y2Y0Yjk5NDZkNDg5YTQ0MmI5MWE4YTU0MGMvdGFibGVyYW5nZTpmNGQ0NzRjZjRiOTk0NmQ0ODlhNDQyYjkxYThhNTQwY185LTAtMS0xLTU0NDIxL3RleHRyZWdpb246NjNlZWY0MDdiMDk0NDBiNjhjM2Y0MTk3YjVlMDYzZTFfNw_8b258b0e-95e6-4f11-8c54-00768aef92cb">243-2769</ix:nonNumeric></span></div></td></tr><tr><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr><td colspan="9" style="padding:2px 1pt;text-align:center;vertical-align:middle"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(Registrant&#8217;s telephone number, including area code)</span></td></tr><tr style="height:5pt"><td colspan="9" style="padding:0 1pt"></td></tr><tr><td colspan="9" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:144%">Not applicable</span></td></tr><tr><td colspan="9" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:144%">(Former name or former address, if changed since last report)</span></td></tr></table></div><div style="margin-bottom:16pt;padding-left:18.5pt;padding-right:18.5pt;text-align:center"><span><br/></span></div><div style="margin-top:5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">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></div><div><span><br/></span></div><div style="padding-left:3pt"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:97.851%"><tr><td style="width:1.0%"></td><td style="width:3.391%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:77.343%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:15.966%"></td><td style="width:0.1%"></td></tr><tr><td colspan="3" style="border-left:1pt solid #cbcbcb;border-top:1pt solid #cbcbcb;padding:2px 1pt;text-align:center;vertical-align:top"><span style="color:#000000;font-family:'Quivira',sans-serif;font-size:10pt;font-weight:400;line-height:100%"><ix:nonNumeric contextRef="iae1dc024cbbe4331beee12a2426bf97b_D20220322-20220322" name="dei:WrittenCommunications" format="ixt-sec:boolballotbox" id="id3VybDovL2RvY3MudjEvZG9jOjhmY2FmNThkN2U1OTQ0MTU4ZmY3ODA4MGRkNzhlZGQ2L3NlYzo4ZmNhZjU4ZDdlNTk0NDE1OGZmNzgwODBkZDc4ZWRkNl8xL2ZyYWc6ZjViYmI2OGY1YjBmNDg3Yjg0OGFlOTA0YjIzOWFkYTEvdGFibGU6ZjIyMDUxOWRkYzE5NDg2ZTk1MTI3OTdhMWU5Y2Q1ZWUvdGFibGVyYW5nZTpmMjIwNTE5ZGRjMTk0ODZlOTUxMjc5N2ExZTljZDVlZV8wLTAtMS0xLTU0NDIx_51969146-801b-402c-a050-6203f4ba230b">&#9744;</ix:nonNumeric></span></td><td colspan="6" style="border-bottom:1pt solid #cbcbcb;border-left:1pt solid #cbcbcb;border-right:1pt solid #cbcbcb;border-top:1pt solid #cbcbcb;padding:2px 1pt;text-align:left;vertical-align:middle"><div style="margin-bottom:2pt;padding-left:4.35pt;padding-right:4pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</span></div></td></tr><tr><td colspan="3" style="border-left:1pt solid #cbcbcb;border-top:1pt solid #cbcbcb;padding:2px 1pt;text-align:left;vertical-align:top"><div style="margin-bottom:2pt;padding-left:1.25pt;padding-right:1.25pt;text-align:center"><span style="color:#000000;font-family:'Quivira',sans-serif;font-size:10pt;font-weight:400;line-height:100%"><ix:nonNumeric contextRef="iae1dc024cbbe4331beee12a2426bf97b_D20220322-20220322" name="dei:SolicitingMaterial" format="ixt-sec:boolballotbox" id="id3VybDovL2RvY3MudjEvZG9jOjhmY2FmNThkN2U1OTQ0MTU4ZmY3ODA4MGRkNzhlZGQ2L3NlYzo4ZmNhZjU4ZDdlNTk0NDE1OGZmNzgwODBkZDc4ZWRkNl8xL2ZyYWc6ZjViYmI2OGY1YjBmNDg3Yjg0OGFlOTA0YjIzOWFkYTEvdGFibGU6ZjIyMDUxOWRkYzE5NDg2ZTk1MTI3OTdhMWU5Y2Q1ZWUvdGFibGVyYW5nZTpmMjIwNTE5ZGRjMTk0ODZlOTUxMjc5N2ExZTljZDVlZV8xLTAtMS0xLTU0NDIx_f5d449e1-7450-4631-b78c-57924d100ed0">&#9744;</ix:nonNumeric></span></div></td><td colspan="6" style="border-bottom:1pt solid #cbcbcb;border-left:1pt solid #cbcbcb;border-right:1pt solid #cbcbcb;border-top:1pt solid #cbcbcb;padding:2px 1pt;text-align:left;vertical-align:middle"><div style="margin-bottom:2pt;padding-left:4.35pt;padding-right:4pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</span></div></td></tr><tr><td colspan="3" style="border-left:1pt solid #cbcbcb;border-top:1pt solid #cbcbcb;padding:2px 1pt;text-align:left;vertical-align:top"><div style="margin-bottom:2pt;padding-left:1.25pt;padding-right:1.25pt;text-align:center"><span style="color:#000000;font-family:'Quivira',sans-serif;font-size:10pt;font-weight:400;line-height:100%"><ix:nonNumeric contextRef="iae1dc024cbbe4331beee12a2426bf97b_D20220322-20220322" name="dei:PreCommencementTenderOffer" format="ixt-sec:boolballotbox" id="id3VybDovL2RvY3MudjEvZG9jOjhmY2FmNThkN2U1OTQ0MTU4ZmY3ODA4MGRkNzhlZGQ2L3NlYzo4ZmNhZjU4ZDdlNTk0NDE1OGZmNzgwODBkZDc4ZWRkNl8xL2ZyYWc6ZjViYmI2OGY1YjBmNDg3Yjg0OGFlOTA0YjIzOWFkYTEvdGFibGU6ZjIyMDUxOWRkYzE5NDg2ZTk1MTI3OTdhMWU5Y2Q1ZWUvdGFibGVyYW5nZTpmMjIwNTE5ZGRjMTk0ODZlOTUxMjc5N2ExZTljZDVlZV8yLTAtMS0xLTU0NDIx_c20f8c71-959c-4e01-836c-b7e3e883a382">&#9744;</ix:nonNumeric></span></div></td><td colspan="6" style="border-bottom:1pt solid #cbcbcb;border-left:1pt solid #cbcbcb;border-right:1pt solid #cbcbcb;border-top:1pt solid #cbcbcb;padding:2px 1pt;text-align:left;vertical-align:middle"><div style="margin-bottom:2pt;padding-left:4.35pt;padding-right:4pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</span></div></td></tr><tr><td colspan="3" style="border-bottom:1pt solid #cbcbcb;border-left:1pt solid #cbcbcb;border-top:1pt solid #cbcbcb;padding:2px 1pt;text-align:left;vertical-align:top"><div style="margin-bottom:2pt;padding-left:1.25pt;padding-right:1.25pt;text-align:center"><span style="color:#000000;font-family:'Quivira',sans-serif;font-size:10pt;font-weight:400;line-height:100%"><ix:nonNumeric contextRef="iae1dc024cbbe4331beee12a2426bf97b_D20220322-20220322" name="dei:PreCommencementIssuerTenderOffer" format="ixt-sec:boolballotbox" id="id3VybDovL2RvY3MudjEvZG9jOjhmY2FmNThkN2U1OTQ0MTU4ZmY3ODA4MGRkNzhlZGQ2L3NlYzo4ZmNhZjU4ZDdlNTk0NDE1OGZmNzgwODBkZDc4ZWRkNl8xL2ZyYWc6ZjViYmI2OGY1YjBmNDg3Yjg0OGFlOTA0YjIzOWFkYTEvdGFibGU6ZjIyMDUxOWRkYzE5NDg2ZTk1MTI3OTdhMWU5Y2Q1ZWUvdGFibGVyYW5nZTpmMjIwNTE5ZGRjMTk0ODZlOTUxMjc5N2ExZTljZDVlZV8zLTAtMS0xLTU0NDIx_d10615d5-fcf8-4347-b583-317a86a54b45">&#9744;</ix:nonNumeric></span></div></td><td colspan="6" style="border-bottom:1pt solid #cbcbcb;border-left:1pt solid #cbcbcb;border-right:1pt solid #cbcbcb;border-top:1pt solid #cbcbcb;padding:2px 1pt;text-align:left;vertical-align:middle"><div style="margin-bottom:2pt;padding-left:4.35pt;padding-right:4pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</span></div></td></tr></table></div><div style="margin-bottom:14pt;margin-top:3pt"><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Securities registered pursuant to Section 12(b) of the Act:</span></div><div style="padding-left:3pt"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:100.000%"><tr><td style="width:1.0%"></td><td style="width:29.613%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:2.565%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:24.373%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:2.565%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:37.184%"></td><td style="width:0.1%"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><div style="margin-bottom:2pt;margin-top:3pt;padding-left:3.35pt;padding-right:3.35pt;text-align:center"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">Title of each class</span></div></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><div style="margin-bottom:2pt;margin-top:3pt;padding-left:3.35pt;padding-right:3.35pt;text-align:center"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">Trading Symbol(s)</span></div></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><div style="margin-bottom:2pt;margin-top:3pt;padding-left:3.35pt;padding-right:3.35pt;text-align:center"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">Name of each exchange on which registered</span></div></td></tr><tr><td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:left;vertical-align:top"><div style="margin-bottom:2pt;margin-top:3pt;padding-right:3.35pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%"><ix:nonNumeric contextRef="iae1dc024cbbe4331beee12a2426bf97b_D20220322-20220322" name="dei:Security12bTitle" id="id3VybDovL2RvY3MudjEvZG9jOjhmY2FmNThkN2U1OTQ0MTU4ZmY3ODA4MGRkNzhlZGQ2L3NlYzo4ZmNhZjU4ZDdlNTk0NDE1OGZmNzgwODBkZDc4ZWRkNl8xL2ZyYWc6ZjViYmI2OGY1YjBmNDg3Yjg0OGFlOTA0YjIzOWFkYTEvdGFibGU6NjdhNzY5MTFhMDA4NDMxZGIxMzk4MGM3MTU5Y2Y3MWIvdGFibGVyYW5nZTo2N2E3NjkxMWEwMDg0MzFkYjEzOTgwYzcxNTljZjcxYl8xLTAtMS0xLTU0NDIx_de7d50e1-78fb-4ba4-80a5-0b75a2ad78b9">Common stock, par value $0.00001 per share</ix:nonNumeric></span></div></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:left;vertical-align:top"><div style="margin-bottom:2pt;margin-top:3pt;padding-left:3.35pt;padding-right:3.35pt;text-align:center"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%"><ix:nonNumeric contextRef="iae1dc024cbbe4331beee12a2426bf97b_D20220322-20220322" name="dei:TradingSymbol" id="id3VybDovL2RvY3MudjEvZG9jOjhmY2FmNThkN2U1OTQ0MTU4ZmY3ODA4MGRkNzhlZGQ2L3NlYzo4ZmNhZjU4ZDdlNTk0NDE1OGZmNzgwODBkZDc4ZWRkNl8xL2ZyYWc6ZjViYmI2OGY1YjBmNDg3Yjg0OGFlOTA0YjIzOWFkYTEvdGFibGU6NjdhNzY5MTFhMDA4NDMxZGIxMzk4MGM3MTU5Y2Y3MWIvdGFibGVyYW5nZTo2N2E3NjkxMWEwMDg0MzFkYjEzOTgwYzcxNTljZjcxYl8xLTItMS0xLTU0NDIx_5ca7b374-a3ef-426d-b1d1-b3f7711df37e">MGNI</ix:nonNumeric></span></div></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:left;vertical-align:top"><div style="margin-bottom:2pt;margin-top:3pt;padding-left:3.35pt;padding-right:3.35pt;text-align:center"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%"><ix:nonNumeric contextRef="iae1dc024cbbe4331beee12a2426bf97b_D20220322-20220322" name="dei:SecurityExchangeName" format="ixt-sec:exchnameen" id="id3VybDovL2RvY3MudjEvZG9jOjhmY2FmNThkN2U1OTQ0MTU4ZmY3ODA4MGRkNzhlZGQ2L3NlYzo4ZmNhZjU4ZDdlNTk0NDE1OGZmNzgwODBkZDc4ZWRkNl8xL2ZyYWc6ZjViYmI2OGY1YjBmNDg3Yjg0OGFlOTA0YjIzOWFkYTEvdGFibGU6NjdhNzY5MTFhMDA4NDMxZGIxMzk4MGM3MTU5Y2Y3MWIvdGFibGVyYW5nZTo2N2E3NjkxMWEwMDg0MzFkYjEzOTgwYzcxNTljZjcxYl8xLTQtMS0xLTU0NDIx_ca47d2d6-0970-426a-830c-954d41d344f8">Nasdaq Global Select Market</ix:nonNumeric></span></div></td></tr></table></div><div style="margin-top:5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">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&#160;12b-2&#160;of the Securities Exchange Act of 1934 (&#167;&#160;240.12b-2&#160;of this chapter).</span></div><div style="margin-top:5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:201%">Emerging growth company&#160;&#160;</span><span style="color:#000000;font-family:'Quivira',sans-serif;font-size:10pt;font-weight:400;line-height:201%"><ix:nonNumeric contextRef="iae1dc024cbbe4331beee12a2426bf97b_D20220322-20220322" name="dei:EntityEmergingGrowthCompany" format="ixt-sec:boolballotbox" id="id3VybDovL2RvY3MudjEvZG9jOjhmY2FmNThkN2U1OTQ0MTU4ZmY3ODA4MGRkNzhlZGQ2L3NlYzo4ZmNhZjU4ZDdlNTk0NDE1OGZmNzgwODBkZDc4ZWRkNl8xL2ZyYWc6ZjViYmI2OGY1YjBmNDg3Yjg0OGFlOTA0YjIzOWFkYTEvdGV4dHJlZ2lvbjpmNWJiYjY4ZjViMGY0ODdiODQ4YWU5MDRiMjM5YWRhMV8xNDQy_1187f86f-5acf-4b7a-b009-2a672451bdad">&#9744;</ix:nonNumeric></span></div><div style="margin-top:5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">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&#160;13(a) of the Exchange Act.&#160;&#160;</span><span style="color:#000000;font-family:'Quivira',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#9744;</span></div><div style="height:43.17pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div><span><br/></span></div></div></div><hr style="page-break-after:always"/><div style="min-height:43pt;width:100%"><div style="text-align:right"><span><br/></span></div></div><div style="padding-left:54pt;text-indent:-54pt"><span style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Item 5.02.&#160;&#160;&#160;&#160;</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers</span><span style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">.</span></div><div style="text-indent:18pt"><span><br/></span></div><div style="margin-bottom:10pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Effective March 21, 2022, the Board of Directors (the &#8220;Board&#8221;) of Magnite, Inc. (the &#8220;Company&#8221;), upon the recommendation of its Nominating and Governance Committee, appointed David Pearson and Diane Yu as directors of the Company. Mr. Pearson will serve as a Class III director and Ms. Yu will serve as a Class I director. Mr. Pearson was also appointed to serve as a member of the Audit Committee of the Board.</span></div><div style="margin-bottom:10pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">New Director Biographies</span></div><div style="margin-bottom:10pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">David Pearson</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">, age 56, has served on the Board of Directors of Lee Enterprises Inc., a public media company listed on Nasdaq, since February 2020, and is also a member of Lee&#8217;s Audit Committee. Mr. Pearson was Chief Financial Officer of Vonage Holdings Corp., a public cloud technology company from May 2013 until August 2020. Before Mr. Pearson joined Vonage, he spent more than nine years with Deutsche Bank Securities as a Managing Director and Global Media &amp; Telecom Group Head. Prior to joining Deutsche Bank, Mr. Pearson served in various roles at Goldman, Sachs &amp; Co. in the Technology, Media &amp; Telecommunications investment banking practice for more than nine years, including most recently as Managing Director. Mr. Pearson started his career at Coopers &amp; Lybrand and holds a M.B.A. from Harvard Business School and an A.B. in Political Science and Organizational Behavior from Brown University. </span></div><div style="margin-bottom:10pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Diane Yu</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">, age 48, has served as the Chief Technology Officer of Better.com since January 2021. Ms. Yu is the Co-Founder of FreeWheel Media, Inc. and served as its Chief Technology Officer from 2007 to 2014, when FreeWheel was acquired by Comcast. Following the sale, Ms. Yu served as Chief Technology Officer of Comcast&#8217;s Advanced Advertising Division. Prior to co-founding FreeWheel, Ms. Yu spent more than nine years at DoubleClick, where she served as the Vice President of engineering from 2005 until 2007. She received her Bachelor&#8217;s degree from Peking University in 1995 and a Master&#8217;s degree in Mathematics from the Ohio University in 1998.</span></div><div style="margin-bottom:10pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">New Director Compensation</span></div><div style="margin-bottom:10pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">In conjunction with their appointments, Mr. Pearson and Ms. Yu were each granted restricted stock units in accordance with the terms and conditions of the Company&#8217;s non-employee director compensation program, as follows:  (i) an equity award comprised of restricted stock units with an aggregate value of $375,000, vesting in three equal annual increments, on the first, second and third anniversaries of the issuance date or, if earlier, upon a change of control, and (ii) an equity award comprised of restricted stock units with an aggregate nominal total value of $28,332, vesting on the date of the Company&#8217;s 2022 annual meeting of stockholders.  In addition, each of Mr. Pearson and Ms. Yu will be entitled to receive annual cash compensation of $50,000 for service on the Board, as well as any applicable fees for committee service.</span></div><div style="margin-bottom:10pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Mr. Pearson and Ms. Yu have no direct or indirect material interest in any transaction required to be disclosed pursuant to Item 404(a) of Regulation S-K. </span></div><div style="margin-bottom:10pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">On March 22, 2022, the Company issued a press release announcing the appointments of Mr. Pearson and Ms. Yu. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K.</span></div><div style="margin-bottom:10pt;padding-left:54pt;text-indent:-54pt"><span style="background-color:#ffffff;color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Item 5.03.&#160;&#160;&#160;&#160;</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year.</span></div><div style="margin-bottom:10pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">On March 21, 2022, the Board unanimously approved the amendment and restatement of the Company&#8217;s Fourth Amended and Restated Bylaws (the &#8220;Bylaws&#8221;). The amendments are solely to remove certain provisions providing for, until April 1, 2022, a specified composition of the Board and related mechanics, which were adopted in connection with the closing on April 1, 2020 of the merger transaction between The Rubicon Project, Inc. and Telaria, Inc (following which the Company changed its name to Magnite, Inc.).</span></div><div style="margin-bottom:10pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The amendments also include various conforming and other non-substantive changes.</span></div><div style="margin-bottom:10pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The above description of the amendments to the Bylaws is qualified in its entirety by reference to the full text of the Bylaws, a copy of which is included as Exhibit 3.1 hereto and incorporated herein by reference.</span></div><div style="height:43.17pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div><span><br/></span></div></div></div><div id="i8fcaf58d7e5944158ff78080dd78edd6_7"></div><hr style="page-break-after:always"/><div style="min-height:43pt;width:100%"><div style="text-align:right"><span><br/></span></div></div><div style="-sec-extract:summary"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:100.000%"><tr><td style="width:1.0%"></td><td style="width:8.900%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:88.900%"></td><td style="width:0.1%"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">Item&#160;9.01.</span></div></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">Financial Statements and Exhibits.</span></td></tr></table></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(d)  Exhibits.</span></div><div><span><br/></span></div><div style="padding-left:9.9pt"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:99.755%"><tr><td style="width:1.0%"></td><td style="width:12.996%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:1.983%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:81.721%"></td><td style="width:0.1%"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="padding-left:2.75pt;padding-right:2.75pt;text-align:center"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">Exhibit </span></div><div style="padding-left:2.75pt;padding-right:2.75pt;text-align:center"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">Number</span></div></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">Description</span></td></tr><tr><td colspan="3" style="border-top:0.5pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">3.1</span></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="border-top:0.5pt solid #000000;padding:2px 1pt;text-align:left;vertical-align:top"><div style="text-align:justify"><span style="color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%;text-decoration:underline"><a style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%;text-decoration:underline" href="exhibit31-magnitefifthamen.htm">F</a><a style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%;text-decoration:underline" href="exhibit31-magnitefifthamen.htm">i</a><a style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%;text-decoration:underline" href="exhibit31-magnitefifthamen.htm">f</a><a style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%;text-decoration:underline" href="exhibit31-magnitefifthamen.htm">th Am</a><a style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%;text-decoration:underline" href="exhibit31-magnitefifthamen.htm">e</a><a style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%;text-decoration:underline" href="exhibit31-magnitefifthamen.htm">n</a><a style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%;text-decoration:underline" href="exhibit31-magnitefifthamen.htm">ded</a><a style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%;text-decoration:underline" href="exhibit31-magnitefifthamen.htm"> and Restate</a><a style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%;text-decoration:underline" href="exhibit31-magnitefifthamen.htm">d Bylaw</a><a style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%;text-decoration:underline" href="exhibit31-magnitefifthamen.htm">s of Mag</a><a style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%;text-decoration:underline" href="exhibit31-magnitefifthamen.htm">nite, Inc.</a></span></div></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">99.1</span></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><div style="text-align:justify"><span style="color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%;text-decoration:underline"><a style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%;text-decoration:underline" href="exhibit991-boardappointmen.htm">Press </a><a style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%;text-decoration:underline" href="exhibit991-boardappointmen.htm">release of Magnite, Inc.,</a><a style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%;text-decoration:underline" href="exhibit991-boardappointmen.htm"> dated </a><a style="-sec-extract:exhibit;color:#0000ff;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%;text-decoration:underline" href="exhibit991-boardappointmen.htm">March 22, 2022 announcing new board members.</a></span></div></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">104</span></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:justify;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Cover Page Interactive Data File (embedded within the Inline XBRL document)</span></td></tr></table></div><div style="padding-left:9.9pt"><span><br/></span></div><div style="padding-left:9.9pt"><span><br/></span></div><div id="i8fcaf58d7e5944158ff78080dd78edd6_10"></div><div style="text-align:center"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:350%">SIGNATURES</span></div><div style="margin-top:12pt;text-indent:24pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">&#160;&#160;&#160;&#160;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></div><div style="margin-bottom:35pt"><span><br/></span></div><div style="padding-left:8.5pt"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:96.972%"><tr><td style="width:1.0%"></td><td style="width:5.546%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:39.081%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:4.640%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:46.333%"></td><td style="width:0.1%"></td></tr><tr style="height:15pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="6" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:2pt;padding-left:3.35pt;padding-right:2pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">MAGNITE, INC.</span></div></td></tr><tr style="height:18pt"><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:2pt;margin-top:2pt;padding-left:3.35pt;padding-right:2pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Date:</span></div></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:2pt;margin-top:2pt;padding-left:3.35pt;padding-right:2pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">March 22, 2022</span></div></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:2pt;margin-top:2pt;padding-left:3.35pt;padding-right:2pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">By:</span></div></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:2pt;padding-right:2pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">/s/ Aaron Saltz</span></div></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:2pt;margin-top:2pt;padding-left:3.35pt;padding-right:2pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Aaron Saltz </span></div></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="margin-bottom:2pt;padding-left:3.35pt;padding-right:2pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">General Counsel and Corporate Secretary</span></div></td></tr></table></div><div style="height:43pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div><span><br/></span></div></div></div></body></html>
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mgni-20220322
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
March 22, 2022
Date of Report (Date of earliest event reported)
MAGNITE, INC.
(Exact name of registrant as specified in its charter)
Delaware
001-36384
20-8881738
(State or other jurisdiction of incorporation)
(Commission File Number)
(IRS Employer Identification No.)
1250 Broadway,
15th Floor
New York,
New York
10001
(Address of principal executive offices, including zip code)
(
212
)
243-2769
(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, par value $0.00001 per share
MGNI
Nasdaq Global Select 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 5.02.
Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers
.
Effective March 21, 2022, the Board of Directors (the "Board") of Magnite, Inc. (the "Company"), upon the recommendation of its Nominating and Governance Committee, appointed David Pearson and Diane Yu as directors of the Company. Mr. Pearson will serve as a Class III director and Ms. Yu will serve as a Class I director. Mr. Pearson was also appointed to serve as a member of the Audit Committee of the Board.
New Director Biographies
David Pearson
, age 56, has served on the Board of Directors of Lee Enterprises Inc., a public media company listed on Nasdaq, since February 2020, and is also a member of Lee's Audit Committee. Mr. Pearson was Chief Financial Officer of Vonage Holdings Corp., a public cloud technology company from May 2013 until August 2020. Before Mr. Pearson joined Vonage, he spent more than nine years with Deutsche Bank Securities as a Managing Director and Global Media & Telecom Group Head. Prior to joining Deutsche Bank, Mr. Pearson served in various roles at Goldman, Sachs & Co. in the Technology, Media & Telecommunications investment banking practice for more than nine years, including most recently as Managing Director. Mr. Pearson started his career at Coopers & Lybrand and holds a M.B.A. from Harvard Business School and an A.B. in Political Science and Organizational Behavior from Brown University.
Diane Yu
, age 48, has served as the Chief Technology Officer of Better.com since January 2021. Ms. Yu is the Co-Founder of FreeWheel Media, Inc. and served as its Chief Technology Officer from 2007 to 2014, when FreeWheel was acquired by Comcast. Following the sale, Ms. Yu served as Chief Technology Officer of Comcast's Advanced Advertising Division. Prior to co-founding FreeWheel, Ms. Yu spent more than nine years at DoubleClick, where she served as the Vice President of engineering from 2005 until 2007. She received her Bachelor's degree from Peking University in 1995 and a Master's degree in Mathematics from the Ohio University in 1998.
New Director Compensation
In conjunction with their appointments, Mr. Pearson and Ms. Yu were each granted restricted stock units in accordance with the terms and conditions of the Company's non-employee director compensation program, as follows:  (i) an equity award comprised of restricted stock units with an aggregate value of $375,000, vesting in three equal annual increments, on the first, second and third anniversaries of the issuance date or, if earlier, upon a change of control, and (ii) an equity award comprised of restricted stock units with an aggregate nominal total value of $28,332, vesting on the date of the Company's 2022 annual meeting of stockholders.  In addition, each of Mr. Pearson and Ms. Yu will be entitled to receive annual cash compensation of $50,000 for service on the Board, as well as any applicable fees for committee service.
Mr. Pearson and Ms. Yu have no direct or indirect material interest in any transaction required to be disclosed pursuant to Item 404(a) of Regulation S-K.
On March 22, 2022, the Company issued a press release announcing the appointments of Mr. Pearson and Ms. Yu. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K.
Item 5.03.
Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year.
On March 21, 2022, the Board unanimously approved the amendment and restatement of the Company's Fourth Amended and Restated Bylaws (the "Bylaws"). The amendments are solely to remove certain provisions providing for, until April 1, 2022, a specified composition of the Board and related mechanics, which were adopted in connection with the closing on April 1, 2020 of the merger transaction between The Rubicon Project, Inc. and Telaria, Inc (following which the Company changed its name to Magnite, Inc.).
The amendments also include various conforming and other non-substantive changes.
The above description of the amendments to the Bylaws is qualified in its entirety by reference to the full text of the Bylaws, a copy of which is included as Exhibit 3.1 hereto and incorporated herein by reference.
Item 9.01.
Financial Statements and Exhibits.
(d)  Exhibits.
Exhibit
Number
Description
3.1
F
i
f
th Am
e
n
ded
and Restate
d Bylaw
s of Mag
nite, Inc.
99.1
Press
release of Magnite, Inc.,
dated
March 22, 2022 announcing new board members.
104
Cover Page Interactive Data File (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.
MAGNITE, INC.
Date:
March 22, 2022
By:
/s/ Aaron Saltz
Aaron Saltz
General Counsel and Corporate Secretary