IONIS PHARMACEUTICALS INC

Ticker: IONS CUSIP: 462222100 Class: COM

STATE OF WISCONSIN INVESTMENT BOARD's Holding History (CIK: 0000854157)

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

Q4 2025
Shares 94,761 Value ($000) $7,497 Avg Close $75.30 Range $64.93 - $83.61
Q3 2025
Shares 96,837 Value ($000) $6,335 Avg Close $48.82 Range $39.72 - $65.55
Q2 2025
Shares 96,694 Value ($000) $3,820 Avg Close $32.73 Range $23.95 - $40.61
Q1 2025
Shares 108,316 Value ($000) $3,268 Avg Close $32.75 Range $29.61 - $35.48
Q4 2024
Shares 101,231 Value ($000) $3,539 Avg Close $37.38 Range $33.33 - $40.58
Q3 2024
Shares 86,166 Value ($000) $3,452 Avg Close $46.53 Range $39.48 - $52.34
Q2 2024
Shares 87,700 Value ($000) $4,180 Avg Close $41.01 Range $35.95 - $47.86
Q1 2024
Shares 91,815 Value ($000) $3,980 Avg Close $47.67 Range $41.60 - $54.44
Q4 2023
Shares 103,565 Value ($000) $5,239 Avg Close $47.90 Range $41.84 - $52.27
Q3 2023
Shares 105,765 Value ($000) $4,798 Avg Close $41.26 Range $38.26 - $47.72
Q2 2023
Shares 109,310 Value ($000) $4,485 Avg Close $38.43 Range $34.32 - $43.55
Q1 2023
Shares 115,251 Value ($000) $4,119 Avg Close $37.55 Range $32.69 - $41.73
Q4 2022
Shares 128,227 Value ($000) $4,843 Avg Close $42.06 Range $36.69 - $47.74
Q3 2022
Shares 129,854 Value ($000) $5,743 Avg Close $42.14 Range $35.95 - $48.82
Q2 2022
Shares 137,233 Value ($000) $5,080 Avg Close $37.71 Range $31.46 - $44.42
Q1 2022
Shares 114,451 Value ($000) $4,239 Avg Close $32.73 Range $28.25 - $37.15
Q4 2021
Shares 17,054 Value ($000) $519 Avg Close $31.48 Range $25.04 - $35.80
Q3 2021
Shares 17,579 Value ($000) $590 Avg Close $37.68 Range $33.52 - $40.99
Q2 2021
Shares 16,749 Value ($000) $668 Avg Close $39.17 Range $34.43 - $47.87
Q1 2021
Shares 72,205 Value ($000) $3,246 Avg Close $55.77 Range $41.42 - $64.37
Q4 2020
Shares 100,085 Value ($000) $5,659 Avg Close $49.83 Range $45.09 - $60.95
Q3 2020
Shares 75,736 Value ($000) $3,594 Avg Close $55.55 Range $47.19 - $63.49
Q2 2020
Shares 75,936 Value ($000) $4,477 Avg Close $55.63 Range $45.12 - $61.24
Q1 2020
Shares 70,176 Value ($000) $3,318 Avg Close $55.74 Range $39.32 - $64.34
Q4 2019
Shares 88,156 Value ($000) $5,326 Avg Close $59.58 Range $53.34 - $66.22
Q3 2019
Shares 89,703 Value ($000) $5,374 Avg Close $65.17 Range $58.48 - $73.09
Q2 2019
Shares 92,702 Value ($000) $5,958 Avg Close $70.69 Range $61.91 - $86.58
Q1 2019
Shares 23,381 Value ($000) $1,898 Avg Close $64.51 Range $52.45 - $81.59
Q4 2018
Shares 23,961 Value ($000) $1,295 Avg Close $51.00 Range $43.27 - $59.81
Q3 2018
Shares 23,961 Value ($000) $1,236 Avg Close $46.98 Range $41.05 - $54.85
Q2 2018
Shares 24,461 Value ($000) $1,019 Avg Close $44.30 Range $39.07 - $51.00
Q1 2018
Shares 24,771 Value ($000) $1,092 Avg Close $50.80 Range $43.38 - $56.47
Q4 2017
Shares 25,344 Value ($000) $1,275 Avg Close $54.84 Range $50.02 - $65.51
Q3 2017
Shares 25,135 Value ($000) $1,274 Avg Close $52.38 Range $43.75 - $60.01
Q2 2017
Shares 24,616 Value ($000) $1,252 Avg Close $46.57 Range $37.26 - $55.73
Q1 2017
Shares 24,066 Value ($000) $967 Avg Close $44.91 Range $37.29 - $56.91
Q4 2016
Shares 65,917 Value ($000) $3,153 Avg Close $39.57 Range $24.58 - $57.00
Q3 2016
Shares 77,030 Value ($000) $2,822 Avg Close $31.29 Range $23.26 - $40.82
Q2 2016
Shares 80,030 Value ($000) $1,864 Avg Close $32.26 Range $19.59 - $46.75
Q1 2016
Shares 10,000 Value ($000) $405 Avg Close $40.62 Range $30.93 - $62.68