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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
Eric SwayzeEVP Research2026-02-139,435$81.56
$769.51kSell
Eric SwayzeEVP Research2026-02-136,207$82.07
$509.40kSell
B. Lynne ParshallDirector2026-02-115,000$82.72
$413.59kSell
Brett P. MoniaChief Executive Officer2026-02-0629,430$85.79
$2.52MSell
C. Frank BennettEVP Chief Scientific Officer2026-02-0216,463$32.60
$536.69kBuy
C. Frank BennettEVP Chief Scientific Officer2026-02-0248,626$60.89
$2.96MBuy
C. Frank BennettEVP Chief Scientific Officer2026-02-0248,626$83.03
$4.04MSell
C. Frank BennettEVP Chief Scientific Officer2026-02-0220,000$82.60
$1.65MSell
C. Frank BennettEVP Chief Scientific Officer2026-02-0216,463$83.03
$1.37MSell
Brett P. MoniaChief Executive Officer2026-01-3062,970$82.72
$5.21MSell

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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
Capital World Investors11.09%17,961,299$1.45BInstitution
Vanguard Group Inc10.15%16,440,459$1.33BInstitution
Blackrock Inc6.57%10,647,863$858.22MInstitution
State Street Corp2.45%3,974,865$320.37MInstitution
Geode Capital Management LLC1.94%3,148,849$253.80MInstitution
Lilly Co Eli1.54%2,500,000$201.50MInsider
Tweedy Browne Co LLC 11.52%2,464,930$198.67MInstitution
Jpmorgan Chase Co1.42%2,304,792$185.77MInstitution
Deep Track Capital LP1.05%1,700,000$137.02MInstitution
American Century Companies Inc1.00%1,617,106$130.34MInstitution

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IONS vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
IONS57.17%3.48%Net SellingNet Selling
ASND36.86%0.00%
BBIO47.86%52.14%Net SellingNet Selling
SMMT3.67%96.33%Net Buying
BMRN73.06%1.74%Net SellingNet Selling
View Top Biotech Stocks

Ionis Pharmaceuticals Stock Ownership FAQ

Who owns Ionis Pharmaceuticals?

Ionis Pharmaceuticals (NASDAQ: IONS) is owned by 57.17% institutional shareholders, 3.48% Ionis Pharmaceuticals insiders, and 39.36% retail investors. Lilly Co Eli is the largest individual Ionis Pharmaceuticals shareholder, owning 2.50M shares representing 1.54% of the company. Lilly Co Eli's Ionis Pharmaceuticals shares are currently valued at $203.40M.

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