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

Insider buying vs selling

Have Ionis Pharmaceuticals Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Michael R. HaydenDirector2026-07-315,000$51.60
$258.00kBuy
Michael R. HaydenDirector2026-07-3015,000$53.38
$800.70kBuy
C. Frank BennettEVP Chief Scientific Officer2026-07-0715,000$85.46
$1.28MSell
Allene M. DiazDirector2026-07-0710,111$47.11
$476.33kBuy
Allene M. DiazDirector2026-07-0710,111$85.42
$863.64kSell
Holly B. KordasiewiczEVP Chief Development Officer2026-07-07362$84.30
$30.52kSell
C. Frank BennettEVP Chief Scientific Officer2026-07-075,536$83.58
$462.69kSell
Joseph Klein IiiDirector2026-07-0199$79.45
$7.87kSell
Joseph Klein IiiDirector2026-07-0111,419$79.04
$902.55kSell
Joseph Klein IiiDirector2026-07-0111,518$39.94
$460.03kBuy

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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
Lilly Co Eli1.50%2,500,000$143.10MInsider
Stanley T. Crooke0.80%1,324,914$75.84MInsider
Handelsbanken Fonder Ab0.23%383,211$21.93MInstitution
Davenport Co LLC 10.17%283,960$16.25MInstitution
Joseph H. Wender0.17%277,170$15.87MInsider
Brett P. Monia0.15%245,571$14.06MInsider
Spencer R. Berthelsen0.10%161,443$9.24MInsider
Swedbank Ab0.06%95,666$5.48MInstitution
Elizabeth L. Hougen0.05%82,660$4.73MInsider
Michael R. Hayden0.05%82,298$4.71MInsider

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IONS vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
IONS0.11%3.34%Net SellingNet Selling
ABVX0.07%0.00%
KYMR0.12%31.95%Net SellingNet Selling
KRYS0.10%24.37%Net SellingNet Selling
SYRE0.11%24.50%Net SellingNet Selling

Ionis Pharmaceuticals Stock Ownership FAQ

Who owns Ionis Pharmaceuticals?

Ionis Pharmaceuticals (NASDAQ: IONS) is owned by 0.11% institutional shareholders, 3.34% Ionis Pharmaceuticals insiders, and 96.55% retail investors. Lilly Co Eli is the largest individual Ionis Pharmaceuticals shareholder, owning 2.50M shares representing 1.50% of the company. Lilly Co Eli's Ionis Pharmaceuticals shares are currently valued at $143.10M.

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