Idorsia

Ticker: IDRSF CUSIP: H3879B109 Class: COM

GILDER GAGNON HOWE & CO LLC's Holding History (CIK: 0000902464)

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

Q1 2018
Shares 159,283 Value ($000) $3,812 Avg Close $27.47 Range $23.90 - $33.02
Q4 2017
Shares 176,653 Value ($000) $4,613 Avg Close $20.18 Range $16.98 - $24.56
Q3 2017
Shares 200,353 Value ($000) $3,582 Avg Close $18.23 Range $17.14 - $19.10
Q2 2017
Shares 199,839 Value ($000) $3,777 Avg Close — Range —