Kevin J. Knopp

Date	Company	Security	Transaction	Code	Indirect	10b5-1	$Price	#Shares	$Value	#Remaining
13 Dec 24	MASS 908 Devices	Common Stock	Option exercise	Acquire M	No	No	1.58	110,626	174.79 k	667,025
13 Dec 24	MASS 908 Devices	Common Stock	Option exercise	Acquire M	No	No	1.75	47,418	82.98 k	556,399
13 Dec 24	MASS 908 Devices	Stock Option Common Stock	Option exercise	Dispose M	No	No	1.58	110,626	174.79 k	0
13 Dec 24	MASS 908 Devices	Stock Option Common Stock	Option exercise	Dispose M	No	No	1.75	47,418	82.98 k	0
13 May 24	MASS 908 Devices	Common Stock	Buy	Acquire P	No	No	6.42	10,000	64.20 k	508,981
10 May 24	MASS 908 Devices	Common Stock	Buy	Acquire P	No	No	5.77	10,000	57.70 k	498,981
9 May 24	MASS 908 Devices	Common Stock	Buy	Acquire P	No	No	5.83	10,000	58.30 k	488,981
8 May 24	MASS 908 Devices	Common Stock	Buy	Acquire P	No	No	5.72	10,000	57.20 k	478,981

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