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IONIS PHARMACEUTICALS INC (IONS)

Institutional ownership, SEC filings and insider activity

Sector: Healthcare & Pharma · SEC CIK 0000874015 · EDGAR filings · Updated 2026-07-17

IONIS PHARMACEUTICALS INC (IONS) has reported institutional ownership of 104.4%, with 491 institutional managers holding positions valued at $13.0B per the latest 13F reporting period. SEC filings include an active notice of delisting or failure to satisfy a continued listing rule (8-K Item 3.01).

Institutional ownership
104.4%
Institutional managers
491
Reported 13F value
$13.0B
Insider activity
299 trans.
−$162.2M net selling
Data flags
1 active
from SEC filings

Latest updates

Institutional ownership overview

According to SEC 13F filings tracked by Sightfile, IONIS PHARMACEUTICALS INC has 491 institutional holders and institutional ownership of 104.4%.

Insider activity

Insiders reported 299 transactions (1 buys, 157 sells) across 21 reporting insiders, with a net reported value of −$162.2M.

Data flags from SEC filings

Active notice of delisting or failure to satisfy a continued listing rule (8-K Item 3.01), most recently filed 2022-07-28 (recurring since 2022-07-28) — source filing. The authoritative details are those stated in the filing itself.

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Sightfile provides information only — not investment advice, recommendations, or an assessment of any security. Data is derived from official public sources (SEC EDGAR and U.S. government agencies), may contain errors or delays, and should be verified against the source filing before relying on it.
Data sources: SEC EDGAR (filings, 13F, FTD), aggregated by Sightfile. Page updated 2026-07-17.