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
Patrick R. OneilCLO;EVP2026-08-3163$51.31
$3.23kBuy
Brett P. MoniaCEO2026-08-3198$51.31
$5.03kBuy
C. Frank BennettCSci;EVP2026-08-31110$51.31
$5.64kBuy
Brian BirchlerEVP2026-08-3158$51.31
$2.98kBuy
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 Officer2026-07-075,536$83.58
$462.69kSell
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

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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$111.25MInsider
Stanley T. Crooke0.80%1,324,914$58.96MInsider
Joseph H. Wender0.17%277,170$12.33MInsider
Brett P. Monia0.15%242,760$10.80MInsider
Spencer R. Berthelsen0.10%161,443$7.18MInsider
Brian Birchler0.06%102,883$4.58MInsider
Elizabeth L. Hougen0.05%82,660$3.68MInsider
Michael R. Hayden0.05%82,298$3.66MInsider
Eugene Schneider0.05%77,114$3.43MInsider
Frederick T. Muto0.04%74,597$3.32MInsider

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IONS vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
IONS0.11%3.35%Net SellingNet Selling
ABVX0.07%0.00%
SYRE0.11%24.47%Net SellingNet Selling
PRAX0.12%50.28%Net Selling
IMVT0.05%57.73%Net BuyingNet Selling

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 96.54% 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 $111.25M.

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