Arnon Rosenthal

Date	Company	Security	Transaction	Code	Indirect	10b5-1	$Price	#Shares	$Value	#Remaining
2 Dec 24	ALEC Alector	Common Stock	Sell	Dispose S	No	No	2.5194	52,172	131.44 k	2,507,074
1 Oct 24	ALEC Alector	Common Stock	Grant	Acquire A	No	No	0	610,500	0.00	2,559,246
3 Sep 24	ALEC Alector	Common Stock	Sell	Dispose S	No	No	4.8827	26,499	129.39 k	1,948,746
3 Jun 24	ALEC Alector	Common Stock	Sell	Dispose S	No	No	4.7988	25,135	120.62 k	1,975,245
4 Mar 24	ALEC Alector	Common Stock	Sell	Dispose S	No	No	6.9218	18,837	130.39 k	2,000,380

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