ALECTOR INC

Ticker: ALEC CUSIP: 014442107 Class: COM

Casdin Capital, LLC's Holding History (CIK: 0001534261)

Note: Option positions (PUT/CALL) are excluded.

Q4 2021
Shares 1,650,000 Value ($000) $34,073 Avg Close $22.55 Range $18.61 - $27.00
Q3 2021
Shares 1,650,000 Value ($000) $37,653 Avg Close $28.01 Range $20.71 - $43.32
Q2 2021
Shares 1,650,000 Value ($000) $34,370 Avg Close $18.85 Range $15.04 - $23.42
Q1 2021
Shares 1,650,000 Value ($000) $33,231 Avg Close $17.93 Range $14.66 - $23.99
Q4 2020
Shares 1,650,000 Value ($000) $24,965 Avg Close $12.43 Range $9.12 - $17.31
Q3 2020
Shares 1,650,000 Value ($000) $17,383 Avg Close $16.17 Range $10.45 - $25.73
Q2 2020
Shares 1,076,039 Value ($000) $26,298 Avg Close $27.60 Range $21.26 - $34.89
Q1 2020
Shares 1,076,039 Value ($000) $25,965 Avg Close $25.49 Range $15.63 - $35.93
Q4 2019
Shares 1,076,039 Value ($000) $18,540 Avg Close $17.00 Range $13.71 - $21.03
Q3 2019
Shares 811,039 Value ($000) $11,695,182 Avg Close $18.05 Range $13.64 - $22.41
Q2 2019
Shares 551,039 Value ($000) $10,189,059 Avg Close $20.30 Range $15.78 - $27.00
Q1 2019
Shares 331,039 Value ($000) $6,197 Avg Close $18.92 Range $15.16 - $23.84