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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 SwayzeEVP2026-10-1653$43.54
$2.31kSell
Shannon L. DeversCHRO;EVP2026-10-161,357$43.54
$59.08kSell
C. Frank BennettCSci;EVP2026-08-31110$51.31
$5.64kBuy
Brian BirchlerEVP2026-08-3158$51.31
$2.98kBuy
Patrick R. OneilCLO;EVP2026-08-3163$51.31
$3.23kBuy
Brett P. MoniaCEO2026-08-3198$51.31
$5.03kBuy
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$85.42
$863.64kSell

1 of 19

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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$70.48MInsider
Stanley T. Crooke0.80%1,324,914$37.35MInsider
Joseph H. Wender0.17%277,170$7.81MInsider
Brett P. Monia0.15%242,760$6.84MInsider
Spencer R. Berthelsen0.10%161,443$4.55MInsider
Brian Birchler0.06%102,883$2.90MInsider
Elizabeth L. Hougen0.05%82,660$2.33MInsider
Michael R. Hayden0.05%82,298$2.32MInsider
Eugene Schneider0.05%77,114$2.17MInsider
Frederick T. Muto0.04%74,597$2.10MInsider

1 of 3

IONS vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
IONS0.11%3.35%Net SellingNet Selling
DFTX0.08%34.72%Net SellingNet Selling
ADPT0.10%53.84%Net SellingNet Selling
TVTX0.11%60.41%Net SellingNet Selling
CRSP0.08%35.92%Net SellingNet Selling
View Top Biotech Stocks

Ionis Pharmaceuticals Stock Ownership FAQ

Who owns Ionis Pharmaceuticals?

Ionis Pharmaceuticals (NASDAQ: IONS) is owned by 0.11% institutional shareholders, 3.35% 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 $70.83M.

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