XENON PHARMACEUTICALS INC

Ticker: XENE CUSIP: 98420N105 Class: Common Stock

Atika Capital Management LLC's Holding History (CIK: 0001599731)

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

Q4 2025
Shares 92,506 Value ($000) $4,146 Avg Close $42.00 Range $37.23 - $46.60
Q3 2025
Shares 38,000 Value ($000) $1,526 Avg Close $35.22 Range $30.00 - $40.35
Q1 2025
Shares 24,000 Value ($000) $805 Avg Close $37.97 Range $32.70 - $42.23
Q4 2024
Shares 72,600 Value ($000) $2,846 Avg Close $41.35 Range $37.34 - $46.00
Q3 2024
Shares 126,000 Value ($000) $4,961 Avg Close $40.32 Range $35.73 - $44.74
Q2 2024
Shares 124,000 Value ($000) $4,835 Avg Close $39.97 Range $35.53 - $44.37
Q1 2024
Shares 122,000 Value ($000) $5,252 Avg Close $46.00 Range $42.08 - $50.99
Q4 2023
Shares 93,234 Value ($000) $4,294 Avg Close $35.33 Range $27.98 - $47.00
Q2 2023
Shares 68,050 Value ($000) $2,620 Avg Close $39.75 Range $33.60 - $43.75
Q1 2023
Shares 67,450 Value ($000) $2,414 Avg Close $36.94 Range $32.64 - $41.25