Protopapas Anna

Date	Company	Security	Transaction	Code	Indirect	10b5-1	$Price	#Shares	$Value	#Remaining
16 Jan 25	MRSN Mersana Therapeutics	Common Stock	Sell	Dispose S	No	Yes	0.58	8,637	5.01 k	168,041
15 Jan 25	MRSN Mersana Therapeutics	Common Stock	Option exercise	Acquire M	No	No	0	21,250	0.00	176,678
15 Jan 25	MRSN Mersana Therapeutics	RSU Common Stock	Option exercise	Dispose M	No	No	0	21,250	0.00	0
15 Jan 25	MRSN Mersana Therapeutics	Common Stock	Sell	Dispose S	No	Yes	0.63	6,191	3.90 k	155,428
14 Jan 25	MRSN Mersana Therapeutics	Common Stock	Option exercise	Acquire M	No	No	0	16,750	0.00	161,619
14 Jan 25	MRSN Mersana Therapeutics	RSU Common Stock	Option exercise	Dispose M	No	No	0	16,750	0.00	16,750
14 Jan 25	MRSN Mersana Therapeutics	Common Stock	Sell	Dispose S	No	Yes	0.66	11,534	7.61 k	144,869
13 Jan 25	MRSN Mersana Therapeutics	Common Stock	Option exercise	Acquire M	No	No	0	31,250	0.00	156,403
13 Jan 25	MRSN Mersana Therapeutics	RSU Common Stock	Option exercise	Dispose M	No	No	0	31,250	0.00	62,500
12 Jun 24	NUVL Nuvalent	Class A Common Stock	Grant	Acquire A	No	No	0	2,499	0.00	2,499

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