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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
Patrick R. OneilEVP CLO General Counsel2025-09-121,700$56.78
$96.53kBuy
Patrick R. OneilEVP CLO General Counsel2025-09-121,700$64.58
$109.79kSell
Patrick R. OneilEVP CLO General Counsel2025-09-0920,000$60.89
$1.22MBuy
Joseph BaroldiEVP Chief Business Officer2025-09-0911,950$62.16
$742.84kSell
Patrick R. OneilEVP CLO General Counsel2025-09-0920,000$64.56
$1.29MSell
Patrick R. OneilEVP CLO General Counsel2025-09-091,000$64.56
$64.56kSell
Patrick R. OneilEVP CLO General Counsel2025-09-091,000$56.78
$56.78kBuy
Joseph BaroldiEVP Chief Business Officer2025-09-0911,950$31.80
$380.01kBuy
C. Frank BennettEVP Chief Scientific Officer2025-09-056,000$59.60
$357.58kSell
Joseph BaroldiEVP Chief Business Officer2025-09-05250$31.80
$7.95kBuy

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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 LLC14.83%23,642,990$1.45BInstitution
Vanguard Group Inc10.49%16,714,846$1.02BInstitution
T Rowe Price Investment Management Inc10.07%16,048,721$984.03MInstitution
Capital World Investors7.87%12,540,188$768.90MInstitution
Blackrock Inc6.84%10,896,937$668.15MInstitution
Bellevue Group Ag4.93%7,853,198$481.52MInstitution
Wellington Management Group LLP3.98%6,345,776$389.09MInstitution
Deep Track Capital LP3.07%4,891,544$299.93MInstitution
State Street Corp2.84%4,530,398$277.78MInstitution
Adage Capital Partners GP LLC2.38%3,800,000$233.00MInstitution

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IONS vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
IONS96.82%3.18%Net SellingNet Selling
MRNA74.88%22.64%Net BuyingNet Selling
BBIO63.78%36.22%Net SellingNet Selling
MDGL26.16%73.84%Net BuyingNet Buying
VRNA11.02%51.50%Net SellingNet Selling
View Top Biotech Stocks

Ionis Pharmaceuticals Stock Ownership FAQ

Who owns Ionis Pharmaceuticals?

Ionis Pharmaceuticals (NASDAQ: IONS) is owned by 106.26% institutional shareholders, 3.49% Ionis Pharmaceuticals insiders, and 0.00% retail investors. Lilly Co Eli is the largest individual Ionis Pharmaceuticals shareholder, owning 2.50M shares representing 1.57% of the company. Lilly Co Eli's Ionis Pharmaceuticals shares are currently valued at $152.93M.

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