WallStreetZenWallStreetZen

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
Joseph BaroldiEVP Chief Business Officer2026-06-263,866$56.78
$219.51kBuy
Brett P. MoniaChief Executive Officer2026-06-2650,000$80.59
$4.03MSell
Brett P. MoniaChief Executive Officer2026-06-2650,000$56.78
$2.84MBuy
Patrick R. OneilEVP CLO General Counsel2026-06-263,069$80.00
$245.52kSell
Eugene SchneiderEVP Chf Clinical Develop Ofcr2026-06-2626,000$81.05
$2.11MSell
Eugene SchneiderEVP Chf Clinical Develop Ofcr2026-06-2626,000$60.89
$1.58MBuy
Joseph BaroldiEVP Chief Business Officer2026-06-265,635$80.16
$451.70kSell
Joseph BaroldiEVP Chief Business Officer2026-06-261,769$32.60
$57.67kBuy
Eric SwayzeEVP Research2026-06-2510,602$79.18
$839.49kSell
Brett P. MoniaChief Executive Officer2026-06-2521,072$78.49
$1.65MSell

1 of 31

IONS insiders have sold more... subscribe to Premium to read more.
Net Insider Buy/Sell (L12M) Ownership

Be the first to know when IONS insiders and whales buy or sell their stock.

IONS Shareholders

What type of owners hold Ionis Pharmaceuticals Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Fmr LLC14.86%24,556,637$1.88BInstitution
Capital World Investors12.82%21,186,369$1.62BInstitution
Blackrock Inc6.32%10,442,476$799.06MInstitution
Vanguard Portfolio Management LLC4.73%7,808,902$597.54MInstitution
Vanguard Capital Management LLC4.31%7,118,330$544.69MInstitution
Wellington Management Group LLP3.87%6,391,816$489.10MInstitution
T Rowe Price Investment Management Inc3.73%6,159,027$471.29MInstitution
Two Sigma Investments LP3.54%5,857,629$448.23MInstitution
State Street Corp2.42%3,995,564$305.74MInstitution
Geode Capital Management LLC2.41%3,984,332$304.88MInstitution

1 of 3

IONS vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
IONS96.90%3.10%Net SellingNet Selling
AXSM62.19%37.81%Net SellingNet Selling
MDGL26.32%73.68%Net BuyingNet Selling
SMMT8.35%91.65%Net BuyingNet Buying
ARWR85.83%9.77%Net SellingNet Selling
View Top Biotech Stocks

Ionis Pharmaceuticals Stock Ownership FAQ

Who owns Ionis Pharmaceuticals?

Ionis Pharmaceuticals (NASDAQ: IONS) is owned by 104.43% institutional shareholders, 3.34% Ionis Pharmaceuticals insiders, and 0.00% retail investors. Lilly Co Eli is the largest individual Ionis Pharmaceuticals shareholder, owning 2.50M shares representing 1.51% of the company. Lilly Co Eli's Ionis Pharmaceuticals shares are currently valued at $191.30M.

If you're new to stock investing, here's how to buy Ionis Pharmaceuticals stock.
©2026 WallStreetZen
Company
AboutNewsBlogStock Investing FAQPlansPrivacy PolicyTerms of ServiceCancellation & RefundsPerformanceHelp GuidesContactTwitterYouTubeNewsletter
Stock Tools
Top Performing AnalystsStock ScreenerStock ForecastTrending StocksStrong Buy StocksHighest Earnings StocksBest Dividend Paying StocksStatisticsStock Market SectorsStock Market IndustriesHow to Buy Stocks Online
Stock Ideas
Buy The DipBiggest Stock Gainers TodayBiggest Stock Losers Today52 Week High Stocks52 Week Low StocksMost Active Stocks TodayMost Undervalued StocksBest Penny Stocks to Buy NowBest Stocks Under $5Best Stocks Under $10
WallStreetZen does not provide financial advice and does not issue recommendations or offers to buy stock or sell any security.

Information is provided 'as-is' and solely for informational purposes and is not advice. WallStreetZen does not bear any responsibility for any losses or damage that may occur as a result of reliance on this data.