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NASDAQ: IONS
Ionis Pharmaceuticals Inc Stock Ownership - Who owns Ionis Pharmaceuticals?

OverviewForecastEarningsRevenueDividendOwnership

Insider buying vs selling

Have Ionis Pharmaceuticals Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Eugene SchneiderEVP Chf Clinical Develop Ofcr2026-03-195,812$70.97
$412.49kSell
Elizabeth L. HougenEVP Finance CFO2026-03-1710,172$73.21
$744.66kSell
Elizabeth L. HougenEVP Finance CFO2026-03-1661,041$56.78
$3.47MBuy
Elizabeth L. HougenEVP Finance CFO2026-03-1660,299$60.89
$3.67MBuy
Elizabeth L. HougenEVP Finance CFO2026-03-1633,118$32.60
$1.08MBuy
Elizabeth L. HougenEVP Finance CFO2026-03-1620,541$37.58
$771.93kBuy
Elizabeth L. HougenEVP Finance CFO2026-03-16205,608$72.38
$14.88MSell
Elizabeth L. HougenEVP Finance CFO2026-03-169,440$72.77
$686.90kSell
Brett P. MoniaChief Executive Officer2026-03-1017,591$76.34
$1.34MSell
Brett P. MoniaChief Executive Officer2026-03-1034,103$60.89
$2.08MBuy

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Net Insider Buy/Sell (L12M) Ownership

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IONS Shareholders

What type of owners hold Ionis Pharmaceuticals Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Fmr LLC14.57%24,072,101$1.74BInstitution
Capital World Investors10.87%17,961,299$1.30BInstitution
Vanguard Group Inc9.95%16,440,459$1.19BInstitution
Blackrock Inc6.45%10,647,863$768.24MInstitution
T Rowe Price Investment Management Inc5.51%9,108,019$657.14MInstitution
Wellington Management Group LLP3.79%6,260,325$451.68MInstitution
Bellevue Group Ag2.91%4,802,199$346.48MInstitution
State Street Corp2.41%3,974,865$286.79MInstitution
Geode Capital Management LLC1.91%3,148,849$227.19MInstitution
Two Sigma Advisers LP1.85%3,052,111$220.21MInstitution

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IONS vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
IONS96.87%3.13%Net SellingNet Selling
MDGL26.15%73.85%Net BuyingNet Selling
JAZZ28.78%71.22%Net SellingNet Selling
EXEL94.72%5.28%Net SellingNet Selling
SMMT8.32%91.68%Net Buying
View Top Biotech Stocks

Ionis Pharmaceuticals Stock Ownership FAQ

Who owns Ionis Pharmaceuticals?

Ionis Pharmaceuticals (NASDAQ: IONS) is owned by 103.17% institutional shareholders, 3.34% Ionis Pharmaceuticals insiders, and 0.00% retail investors. Lilly Co Eli is the largest individual Ionis Pharmaceuticals shareholder, owning 2.50M shares representing 1.51% of the company. Lilly Co Eli's Ionis Pharmaceuticals shares are currently valued at $181.30M.

If you're new to stock investing, here's how to buy Ionis Pharmaceuticals stock.
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