IONIS PHARMACEUTICALS INC

Ticker: IONS CUSIP: 462222100 Class: COM

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

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

Q4 2025

Shares 47,488 Value ($000) $3,757 Avg Close $75.30 Range $64.93 - $83.61

Q3 2025

Shares 21,500 Value ($000) $1,407 Avg Close $48.82 Range $39.72 - $65.55

Q4 2015

Shares 38,000 Value ($000) $2,354 Avg Close $53.96 Range $38.30 - $65.34

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	47,488	$3,757	$75.30	$64.93 - $83.61
Q3 2025	21,500	$1,407	$48.82	$39.72 - $65.55
Q4 2015	38,000	$2,354	$53.96	$38.30 - $65.34