MaxCyte Regulatory News (MXCT)

SCHEDULE 6

AIM BLOCK ADMISSION SIX MONTHLY RETURN

Please ensure the entries on this return are typed

a. Name of company

MaxCyte, Inc.

b. Name of scheme(s)

MaxCyte Long Term Incentive Plan

c. Period of return:

From 5 May 2017 To 31 January 2018

d. Number and class of securities not issued under scheme

1,000,000 ordinary shares of common stock of $0.01 each

e. Number of shares issued under scheme during period

200,229 ordinary shares of common stock of $0.01 each

f. Balance under the scheme not yet issued at the end of the period.

799,771 ordinary shares of common stock of $0.01 each

g. Number and class of share(s) (amount of stock / debt securities) originally listed and the date of admission; If additional blocklisting application have been made, under this scheme, since the original listing application please also state the number of shares and the date(s) of admission.

1,000,000 ordinary shares of common stock of $0.01 each on 5 May 2017

Please confirm your total issued share capital as at the end of this period.

(If you hold any shares in Treasury state the figure separately);

……51,014,746……………… Treasury shares (if applicable) ………Nil………….

h. Contact name and telephone number for queries;

Doug Doerfler, Chief Executive Officer

Ron Holtz, Chief Financial Officer

+1 301 944 1660

Date

1 February 2018