X0202 SCHEDULE 13D 0001544204 XXXXXXXX LIVE Equity 10/14/2026 false 0001287098 57777K106 MAXCYTE, INC.

9713 KEY WEST AVENUE, SUITE 400 ROCKVILLE MD 20850

Matthew Hambly 02039088836 2 Savoy Court London X0 WC2R 0EZ 0001544204 N Liontrust Investment Partners LLP OO N X0 5194322.00 0.00 5194322.00 0.00 5194322.00 N 5.0 IV Equity MAXCYTE, INC. 9713 KEY WEST AVENUE, SUITE 400 ROCKVILLE MD 20850 Liontrust Investment Partners LLP 2 Savoy Court, London WC2R 0EZ Investment Firm 2 Savoy Court, London WC2R 0EZ No No United Kingdom N/A (a) The acquisition by any person of additional securities of the issuer, or the disposition of securities of the issuer 5,194,322 5.0330% 5,194,322 shares rade Date BUY/SELL Amount Price 01-Sep-2026 SELL -81,203.00 1.23950150 02-Sep-2026 SELL -63,958.00 1.25395358 03-Sep-2026 SELL -54,839.00 1.24421552 08-Sep-2026 SELL -41,034.00 1.26752510 09-Sep-2026 SELL -37,115.00 1.23726948 10-Sep-2026 SELL -29,095.00 1.19462212 11-Sep-2026 SELL -32,615.00 1.17414454 14-Sep-2026 SELL -74,036.00 1.14991057 07-Oct-2026 SELL -3,111.00 1.04626808 14-Oct-2026 BUY 138,139.00 1.26072563 14-Oct-2026 BUY 175,694.00 1.26072563 14-Oct-2026 BUY 43,113.00 1.26072563 N/A N/A N/A N/A Liontrust Investment Partners LLP Matthew Hambly 10/15/2026