MAXCYTE, INC. — Director's Dealing 2024

Oct 1, 2024

National Storage Mechanism | Additional information

RNS Number : 4478G

MaxCyte, Inc.

01 October 2024

MaxCyte, Inc.

("MaxCyte" or the "Company")

Exercise of options and PDMR dealing

ROCKVILLE, MD, October 1, 2024: MaxCyte Inc., (NASDAQ: MXCT; LSE: MXCT), a leading, cell-engineering focused company providing enabling platform technologies to advance the discovery, development, and commercialization of next-generation cell therapeutics and to support innovative, cell-based research, announces that on 26 September 2024, as per a filing lodged with the U.S. Securities and Exchange Commission, John Johnston, a Non-Executive Director of the Company , exercised options over 3,000 shares of common stock of $0.01 of the Company ("Common Stock") ("Exercise") in aggregate. The 3,000 new shares of Common Stock were issued pursuant to the Company's existing its block admission facility and were sold by John Johnston at a price range between $3.800 and $3.870 per Common Stock ("Sale"). The sold shares represent approximately 0.9% of John Johnston's total equity and option holdings in the Company's stock capital, respectively.

Following the Exercise and Sale, John Johnston holds 120,583 shares of Common Stock representing 0.1% of the issued stock capital of the Company. Following the Exercise, John Johnston holds a further 183,918 options over Common Stock and 21,367 restricted stock units.

The sales and option exercises were effected pursuant to a Rule 10b5-1 trading plan adopted by John Johnston on 19 December 2023 relating solely to the sale of shares acquired from exercise of options that expire on 14 July 2027.

MaxCyte Contacts:

US IR Adviser Gilmartin Group David Deuchler, CFA	+1 415-937-5400 [email protected]
Nominated Adviser and Joint Corporate Broker Panmure Liberum Emma Earl / Freddy Crossley Corporate Broking Rupert Dearden	+44 (0)20 7886 2500
UK IR Adviser ICR Consilium Mary-Jane Elliott Chris Welsh	+44 (0)203 709 5700 [email protected]

About MaxCyte

At MaxCyte, we pursue cell engineering excellence to maximize the potential of cells to improve patients' lives. We have spent more than 20 years honing our expertise by building best-in-class platforms, perfecting the art of the transfection workflow, and venturing beyond today's processes to innovate tomorrow's solutions. Our ExPERT™ platform, which is based on our Flow Electroporation ® technology, has been designed to support the rapidly expanding cell therapy market and can be utilized across the continuum of the high-growth cell therapy sector, from discovery and development through commercialization of next-generation, cell-based medicines. The ExPERT family of products includes: four instruments, the ATx™, STx™, GTx™ and VLx ™; a portfolio of proprietary related processing assemblies or disposables; and software protocols, all supported by a robust worldwide intellectual property portfolio. By providing our partners with the right technology, as well as technical and regulatory support, we aim to guide them on their journey to transform human health. Learn more at maxcyte.com and follow us on Twitter and LinkedIn .

NOTIFICATION AND PUBLIC DISCLOSURE OF TRANSACTIONS BY PERSONS DISCHARGING MANAGERIAL RESPONSIBILITIES AND PERSONS CLOSELY ASSOCIATED WITH THEM

1	Details of the person discharging managerial responsibilities / person closely associated
a)	Name	John Johnston
2	Reason for the notification
a)	Position/status	Non-Executive Director
b)	Initial notification /Amendment	Initial notification
3	Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor
a)	Name	MaxCyte, Inc.
b)	LEI	54930053YHXULRFCU991
4	Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted
a)	Description of the financial instrument, type of instrument	Common Stock of $0.01 each
Identification code	US57777K1060
b)	Nature of the transaction	Exercise of Options over common stock
c)	Price(s) and volume(s)
		Exercise Price(s)	Volume(s)
		$2.926	3,000
d)	Aggregated information
- Aggregated volume	3,000
- Price	$2.926
e)	Date of the transaction	26 September 2024
f)	Place of the transaction	US Stock Exchange, Nasdaq

1	Details of the person discharging managerial responsibilities / person closely associated
a)	Name	John Johnston
2	Reason for the notification
a)	Position/status	Non-Executive Director
b)	Initial notification /Amendment	Initial notification
3	Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor
a)	Name	MaxCyte, Inc.
b)	LEI	54930053YHXULRFCU991
4	Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted
a)	Description of the financial instrument, type of instrument	Common Stock of $0.01 each
Identification code	US57777K1060
b)	Nature of the transaction	Sale of common stock
c)	Price(s) and volume(s)
		Exercise Price(s)	Volume(s)
		$3.8000	320
		$3.8050	105
		$3.8100	780
		$3.8150	840
		$3.8200	55
		$3.8250	296
		$3.8300	103
		$3.8400	80
		$3.8450	63
		$3.8500	61
		$3.8550	55
		$3.8600	175
		$3.8700	67
d)	Aggregated information
- Aggregated volume	3,000
- Price	$3.8199
e)	Date of the transaction	26 September 2024
f)	Place of the transaction	US Stock Exchange, Nasdaq

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