Christopher D. Brown

Date	Company	Security	Transaction	Code	Indirect	10b5-1	$Price	#Shares	$Value	#Remaining
19 Dec 24	MASS 908 Devices	Common Stock	Option exercise	Acquire M	No	No	1.58	55,131	87.11 k	946,453
19 Dec 24	MASS 908 Devices	Stock Option Common Stock	Option exercise	Dispose M	No	No	1.58	55,131	87.11 k	0
1 Apr 24	MASS 908 Devices	Common Stock	Option exercise	Acquire M	No	No	1.75	3,600	6.30 k	884,994
1 Apr 24	MASS 908 Devices	Stock Option Common Stock	Option exercise	Dispose M	No	No	1.75	3,600	6.30 k	114,318
1 Mar 24	MASS 908 Devices	RSU Common Stock, par value $0.001	Grant	Acquire A	No	No	0	43,965	0.00	43,965
1 Mar 24	MASS 908 Devices	Stock Option (option to buy) Common Stock, par value $0.001	Grant	Acquire A	No	No	7.35	60,064	441.47 k	60,064
1 Feb 24	MASS 908 Devices	Common Stock	Sell	Dispose S	No	No	7.0183	2,358	16.55 k	886,394
1 Feb 24	MASS 908 Devices	Common Stock	Sell	Dispose S	No	No	6.9926	1,599	11.18 k	888,752
1 Feb 24	MASS 908 Devices	Common Stock	Option exercise	Acquire M	No	No	0	7,418	0.00	890,351
1 Feb 24	MASS 908 Devices	Common Stock	Option exercise	Acquire M	No	No	0	5,028	0.00	882,933

Data from 3, 4 and 5 filings. Values as filed, not updated for current price.