Insider · CIK 0001874850

Johnston John Joseph

Reports to the SEC for 1 company · ROCKVILLE, MD

sec.gov

Transactions

Companies

Filings

CIK

0001874850

Forms 4 and 5

Insider transactions

50 trades

Date	Company	Role	Code	Shares	Price	Value	Shares after
2026-06-17	MXCTMAXCYTE, INC.A Award	Director	AAward	+30.4K sh	—	—	201,581
2026-06-17	MXCTMAXCYTE, INC. · Stock Option (right to buy)A Award	Director	AAward	+49.6K sh	—	—	49,579
2025-06-18	MXCTMAXCYTE, INC.A Award	Director	AAward	+29.2K sh	—	—	171,160
2025-06-18	MXCTMAXCYTE, INC. · Stock Option (right to buy)A Award	Director	AAward	+50.8K sh	—	—	50,790
2025-01-27	MXCTMAXCYTE, INC.M Exercise/Conversion	Director	MExercise/Conversion	+3,000 sh	$2.93	+$8,796	144,950
2025-01-27	MXCTMAXCYTE, INC.S Sale	Director	SSale	−3,000 sh	$4.64	−$13.9K	141,950
2025-01-27	MXCTMAXCYTE, INC. · Stock Option (right to buy)M Exercise/Conversion	Director	MExercise/Conversion	−3,000 sh	—	—	17,417
2024-12-26	MXCTMAXCYTE, INC.M Exercise/Conversion	Director	MExercise/Conversion	+3,000 sh	$2.93	+$8,796	144,950
2024-12-26	MXCTMAXCYTE, INC.S Sale	Director	SSale	−3,000 sh	$4.01	−$12K	141,950
2024-12-26	MXCTMAXCYTE, INC. · Stock Option (right to buy)M Exercise/Conversion	Director	MExercise/Conversion	−3,000 sh	—	—	20,417
2024-12-09	MXCTMAXCYTE, INC.M Exercise/Conversion	Director	MExercise/Conversion	+891 sh	$2.93	+$2,607.066	142,841
2024-12-09	MXCTMAXCYTE, INC.M Exercise/Conversion	Director	MExercise/Conversion	+1,121 sh	$1.64	+$1,839.561	143,962
2024-12-09	MXCTMAXCYTE, INC.M Exercise/Conversion	Director	MExercise/Conversion	+483 sh	$2.93	+$1,416.156	144,445
2024-12-09	MXCTMAXCYTE, INC.S Sale	Director	SSale	−2,495 sh	$3.79	−$9,458.545	141,950
2024-12-09	MXCTMAXCYTE, INC. · Stock Option (right to buy)M Exercise/Conversion	Director	MExercise/Conversion	−891 sh	—	—	0
2024-12-09	MXCTMAXCYTE, INC. · Stock Option (right to buy)M Exercise/Conversion	Director	MExercise/Conversion	−1,121 sh	—	—	0
2024-12-09	MXCTMAXCYTE, INC. · Stock Option (right to buy)M Exercise/Conversion	Director	MExercise/Conversion	−483 sh	—	—	23,417
2024-12-06	MXCTMAXCYTE, INC.M Exercise/Conversion	Director	MExercise/Conversion	+505 sh	$2.93	+$1,477.63	142,455
2024-12-06	MXCTMAXCYTE, INC.S Sale	Director	SSale	−505 sh	$3.70	−$1,869.005	141,950
2024-12-06	MXCTMAXCYTE, INC. · Stock Option (right to buy)M Exercise/Conversion	Director	MExercise/Conversion	−505 sh	—	—	891
2024-10-28	MXCTMAXCYTE, INC.M Exercise/Conversion	Director	MExercise/Conversion	+3,000 sh	$2.93	+$8,778	144,950
2024-10-28	MXCTMAXCYTE, INC.S Sale	Director	SSale	−3,000 sh	$3.72	−$11.2K	141,950
2024-10-28	MXCTMAXCYTE, INC. · Stock Option (right to buy)M Exercise/Conversion	Director	MExercise/Conversion	−3,000 sh	—	—	1,396
2024-09-26	MXCTMAXCYTE, INC.M Exercise/Conversion	Director	MExercise/Conversion	+3,000 sh	$2.93	+$8,778	144,950
2024-09-26	MXCTMAXCYTE, INC.S Sale	Director	SSale	−3,000 sh	$3.82	−$11.5K	141,950
2024-09-26	MXCTMAXCYTE, INC. · Stock Option (right to buy)M Exercise/Conversion	Director	MExercise/Conversion	−3,000 sh	—	—	4,396
2024-08-26	MXCTMAXCYTE, INC.M Exercise/Conversion	Director	MExercise/Conversion	+3,000 sh	$2.93	+$8,778	144,950
2024-08-26	MXCTMAXCYTE, INC.S Sale	Director	SSale	−3,000 sh	$4.28	−$12.8K	141,950
2024-08-26	MXCTMAXCYTE, INC. · Stock Option (right to buy)M Exercise/Conversion	Director	MExercise/Conversion	−3,000 sh	—	—	7,396
2024-07-26	MXCTMAXCYTE, INC.M Exercise/Conversion	Director	MExercise/Conversion	+3,000 sh	$2.93	+$8,778	144,950
2024-07-26	MXCTMAXCYTE, INC.S Sale	Director	SSale	−3,000 sh	$4.75	−$14.2K	141,950
2024-07-26	MXCTMAXCYTE, INC. · Stock Option (right to buy)M Exercise/Conversion	Director	MExercise/Conversion	−3,000 sh	—	—	10,396
2024-06-27	MXCTMAXCYTE, INC.M Exercise/Conversion	Director	MExercise/Conversion	+5,044 sh	$1.64	+$8,277.204	146,994
2024-06-27	MXCTMAXCYTE, INC.M Exercise/Conversion	Director	MExercise/Conversion	+4,956 sh	$2.93	+$14.5K	151,950
2024-06-27	MXCTMAXCYTE, INC.S Sale	Director	SSale	−10K sh	$3.99	−$39.9K	141,950
2024-06-27	MXCTMAXCYTE, INC. · Stock Option (right to buy)M Exercise/Conversion	Director	MExercise/Conversion	−5,044 sh	—	—	1,121
2024-06-27	MXCTMAXCYTE, INC. · Stock Option (right to buy)M Exercise/Conversion	Director	MExercise/Conversion	−4,956 sh	—	—	13,396
2024-06-11	MXCTMAXCYTE, INC.A Award	Director	AAward	+21.4K sh	—	—	141,950
2024-06-11	MXCTMAXCYTE, INC. · Stock Option (right to buy)A Award	Director	AAward	+40.7K sh	—	—	40,701
2024-03-26	MXCTMAXCYTE, INC.M Exercise/Conversion	Director	MExercise/Conversion	+5,000 sh	$2.14	+$10.7K	125,583
2024-03-26	MXCTMAXCYTE, INC.S Sale	Director	SSale	−5,000 sh	$4.41	−$22K	120,583
2024-03-26	MXCTMAXCYTE, INC. · Stock Option (right to buy)M Exercise/Conversion	Director	MExercise/Conversion	−5,000 sh	—	—	617
2024-02-26	MXCTMAXCYTE, INC.M Exercise/Conversion	Director	MExercise/Conversion	+5,000 sh	$2.14	+$10.7K	125,583
2024-02-26	MXCTMAXCYTE, INC.S Sale	Director	SSale	−5,000 sh	$4.60	−$23K	120,583
2024-02-26	MXCTMAXCYTE, INC. · Stock Option (right to buy)M Exercise/Conversion	Director	MExercise/Conversion	−5,000 sh	—	—	5,617
2024-01-26	MXCTMAXCYTE, INC.M Exercise/Conversion	Director	MExercise/Conversion	+5,000 sh	$2.14	+$10.7K	125,583
2024-01-26	MXCTMAXCYTE, INC.S Sale	Director	SSale	−5,000 sh	$5.12	−$25.6K	120,583
2024-01-26	MXCTMAXCYTE, INC. · Stock Option (right to buy)M Exercise/Conversion	Director	MExercise/Conversion	−5,000 sh	—	—	10,617
2023-12-26	MXCTMAXCYTE, INC.M Exercise/Conversion	Director	MExercise/Conversion	+5,000 sh	$2.14	+$10.7K	125,583
2023-12-26	MXCTMAXCYTE, INC.S Sale	Director	SSale	−5,000 sh	$4.53	−$22.7K	120,583

Recent filings

Accepted (ET)
Jun 224
Johnston John Joseph0000905148-26-003056
SEC(opens sec.gov)
Jun 234
Johnston John Joseph0000905148-25-002235
SEC(opens sec.gov)
Jan 294
Johnston John Joseph0001415889-25-002263
SEC(opens sec.gov)
Dec 304
Johnston John Joseph0001415889-24-030230
SEC(opens sec.gov)
Dec 104
Johnston John Joseph0001415889-24-028839
SEC(opens sec.gov)

Companies

MAXCYTE, INC.DirectorMXCT

Address

C/O MAXCYTE, INC. 9713 KEY WEST AVENUE, SUITE 400

ROCKVILLE, MD, 20850