0001972481-23-000028.txt : 20230626 0001972481-23-000028.hdr.sgml : 20230626 20230626163428 ACCESSION NUMBER: 0001972481-23-000028 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20230626 DATE AS OF CHANGE: 20230626 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: MAXCYTE, INC. CENTRAL INDEX KEY: 0001287098 STANDARD INDUSTRIAL CLASSIFICATION: SERVICES-COMMERCIAL PHYSICAL & BIOLOGICAL RESEARCH [8731] IRS NUMBER: 522210438 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 144 SEC ACT: 1933 Act SEC FILE NUMBER: 001-40674 FILM NUMBER: 231042818 BUSINESS ADDRESS: STREET 1: 9713 KEY WEST AVENUE, STREET 2: SUITE 400 CITY: ROCKVILLE STATE: MD ZIP: 20850 BUSINESS PHONE: 301-517-5556 MAIL ADDRESS: STREET 1: 9713 KEY WEST AVENUE, STREET 2: SUITE 400 CITY: ROCKVILLE STATE: MD ZIP: 20850 FORMER COMPANY: FORMER CONFORMED NAME: MAXCYTE INC DATE OF NAME CHANGE: 20040415 REPORTING-OWNER: COMPANY DATA: COMPANY CONFORMED NAME: Johnston John Joseph CENTRAL INDEX KEY: 0001874850 FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: C/O MAXCYTE, INC. STREET 2: 22 FIRSTFIELD ROAD, SUITE 110 CITY: GAITHERSBURG STATE: MD ZIP: 20878 144 1 primary_doc.xml 144 0001874850 XXXXXXXX LIVE 0001287098 MAXCYTE, INC. 001-40674 9713 KEY WEST AVENUE, SUITE 400 ROCKVILLE MD 20850 301-517-5556 Johnston John Joseph Affiliate Common Stifel Investments

501 N. Broadway St. Louis MO 63102

25000 117000.00 102904745 06/26/2023 NASDAQ Common 06/13/2016 option exercise Issuer N 6817 06/26/2023 Cash Common 01/20/2020 option exercise Issuer N 18183 06/26/2023 Cash Y 06/26/2023 03/28/2023 Dominick Iadicicco