Location
Boston, MA
Signature
/s/ Lauren Crockett, as attorney in fact for Polaris Venture Management Co. VI, L.L.C.
All insider transactions
Transactions in reports broken out by “transaction date” reported in original SEC filing, see here for transactions aggregated across transaction date

Holdings reported by Polaris Venture Management Co. VI, L.L.C.:

Stock Role Class Num Shares Value Price $ Report Date Ownership
Alector, Inc. 10%+ Owner Common Stock 9.85M $68.2M $6.92 29 May 2024 Indirect
Alector, Inc. 10%+ Owner Common Stock 0 $0 $6.92 29 May 2024 Direct

Insider Reports Filed by Polaris Venture Management Co. VI, L.L.C.

Symbol Company Period Transactions Value $ Form Type Role Filing Time
ALEC Alector, Inc. 29 May 2024 3 $0 4 10%+ Owner 31 May 2024, 17:24
ALEC Alector, Inc. 30 Apr 2024 3 $0 4 10%+ Owner 02 May 2024, 17:32
ALEC Alector, Inc. 11 Sep 2023 1 -$3M 4 10%+ Owner 13 Sep 2023, 16:33
ALEC Alector, Inc. 22 Aug 2023 3 $0 4 10%+ Owner 24 Aug 2023, 17:26
ALEC Alector, Inc. 16 Nov 2022 3 $0 4 10%+ Owner 18 Nov 2022, 16:17
ALEC Alector, Inc. 21 Dec 2021 3 $0 4 10%+ Owner 23 Dec 2021, 15:44