Public ownership evidence

Ionis Pharmaceuticals, Inc. Common Stock (IONS) Ownership Disclosures

Read IONS insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-10-10T12:08:28.848Z

Separate the three disclosure sources

Step 1 of 3

Recent Form 4 activity

Ionis Pharmaceuticals, Inc. Common Stock: source evidence dated 2026-10-10T12:08:28.848Z.

Available
2026-08-01
Trade date
2026-07-31
Reporting owners
Hayden Michael R
Code
P
Shares
5,000
Reported value
Not reported
What you should see

The displayed owner or issuer and source fields identify the receipt to verify; keep reporting and availability dates separate.

Step 2 of 3

Is this an insider transaction, 13F holding, or Congressional event?

Each source has different dates and units. Raw ticker-matched receipts, including amendments, are not deduplicated current ownership totals.

SEC 0000874015-26-000254
What you should see

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Step 3 of 3

Read IONS fundamentals

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Read IONS fundamentals
What you should see

Keep reporting dates and units beside the answer, and inspect its original citations.

Recent Form 4 activity

See the complete recent form 4 activity
2026-08-012026-07-31Hayden Michael RP5,000Not reported
2026-08-012026-07-30Hayden Michael RP15,000Not reported
2026-07-182026-07-15Reikes Peter NA3,399Not reported
2026-07-182026-07-15HANTSON LUDWIGA3,399Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

Cornerstone Financial Management LLC2026-06-302026-08-2915$1,189None
Cornerstone Financial Management LLC2026-03-312026-08-2915$1,126None
Cornerstone Financial Management LLC2025-12-312026-08-2915$1,187None
Advisors Asset Management, Inc.2020-06-302026-08-2817,587$1,036,930None
Advisors Asset Management, Inc.2021-09-302026-08-283,164$106,000None
Corient Private Wealth LP2026-06-302026-08-28193,536$15,345,472None
Corient Private Wealth LP2026-06-302026-08-283,125$247,781None
VELA Investment Management, LLC2026-03-312026-08-2812,500$938,625Call
VELA Investment Management, LLC2025-12-312026-08-285,000$395,550Call
Principia Wealth Advisory, LLC2026-06-302026-08-2732$2,537None
Principia Wealth Advisory, LLC2026-03-312026-08-2732$2,403None
Advisors Asset Management, Inc.2024-03-312026-08-273,178$137,766None
Advisors Asset Management, Inc.2025-03-312026-08-276,048$182,468None
Advisors Asset Management, Inc.2020-12-312026-08-2710,000$565,000None
Advisors Asset Management, Inc.2021-03-312026-08-273,208$144,232None
Advisors Asset Management, Inc.2021-06-302026-08-273,179$127,000None
Advisors Asset Management, Inc.2020-09-302026-08-2716,683$791,608None
Advisors Asset Management, Inc.2025-09-302026-08-275,454$356,801None
Advisors Asset Management, Inc.2023-12-312026-08-27303$15,329None
Advisors Asset Management, Inc.2019-12-312026-08-2616,462$994,469None
VIRGINIA RETIREMENT SYSTEMS ET Al2026-03-312026-08-2610,300$773,427None
VIRGINIA RETIREMENT SYSTEMS ET Al2026-06-302026-08-2613,400$1,062,486None
Advisors Asset Management, Inc.2025-06-302026-08-255,999$237,020None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-25180,949$14,347,446None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-2514,347,446$180,949,000None
Advisors Asset Management, Inc.2024-09-302026-08-226,140$245,968None
Advisors Asset Management, Inc.2024-06-302026-08-225,074$241,827None
Advisors Asset Management, Inc.2024-12-312026-08-226,070$212,207None
Advisors Asset Management, Inc.2025-12-312026-08-222,835$224,277None
Advisors Asset Management, Inc.2020-03-312026-08-2217,833$843,144None
Assenagon Asset Management S.A.2026-06-302026-08-2240,927$3,245,102None
Harvest Fund Management Co., Ltd2026-06-302026-08-21234$19,000None
Archer Investment Corp2026-06-302026-08-20600$47,574None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-206,918$548,406None
Advisors Asset Management, Inc.2019-03-312026-08-1928,593$2,320,894None
Advisors Asset Management, Inc.2019-09-302026-08-1919,001$1,138,350None
Advisors Asset Management, Inc.2019-06-302026-08-1924,946$1,603,279None
Orion Capital Management LLC2026-06-302026-08-1980$6,343None
Ensign Peak Advisors, Inc2026-03-312026-08-1946,004$3,454,440None
Ensign Peak Advisors, Inc2025-12-312026-08-1953,664$4,245,359None
Ensign Peak Advisors, Inc2025-09-302026-08-1927,595$1,805,265None
NORTH STAR ASSET MANAGEMENT INC2026-06-302026-08-1916,560$1,313,042None
Corient Private Wealth LP2026-06-302026-08-18196,791$15,603,561None
Empowered Funds, LLC2026-06-302026-08-18110,256$8,742,198None
Empowered Funds, LLC2026-06-302026-08-18108,014$8,564,430None
Empowered Funds, LLC2026-06-302026-08-182,885$228,752None
Empowered Funds, LLC2026-06-302026-08-181,255$99,509None
Empowered Funds, LLC2026-06-302026-08-18632$50,111None
Empowered Funds, LLC2026-06-302026-08-18100$7,929None
Transamerica Financial Advisors, LLC2026-06-302026-08-1821$1,665None

90-day public filing window, up to 50 source positions.

Cornerstone Financial Management LLC ↗Cornerstone Financial Management LLC ↗Cornerstone Financial Management LLC ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Corient Private Wealth LP ↗Corient Private Wealth LP ↗VELA Investment Management, LLC ↗VELA Investment Management, LLC ↗Principia Wealth Advisory, LLC ↗

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

No records are available for this view.

Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.

Aurora · AI research assistant

Try this in Aurora

Edit the request, then open it in Aurora. You choose when to send it.