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IONS · Ionis Pharmaceuticals Inc

Healthcare · −2.7% on Oct 16

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Updated Oct 17 · 9 feeds behind: FDA drug approvals, 1 day, and 8 more · Every feed →

On this page

The market view

Price chart

The interactive IONS chart (by TradingView) loads here.

Our take

1 rule fired on IONS

In short: none of these rules has solid or some evidence yet, so they show no clear lean on IONS.

How each did in past tests, against similar stocks over 3 months. Past results don't predict future ones.

The 0–100 score for IONS, and which of these rules are open on it right now
Members see one number for how strongly these rules agree on IONS, and the day each rule fired. Better-tested rules count more, and so do different kinds of filings that point the same way.
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Compare with this company’s history

Is disclosure activity unusual?

See how many different insiders or members of Congress reported purchases or sales of IONS. Each bar covers 28 days, by disclosure date. Several trades by one person count once in each group and period.

Latest period: Sep 21, 2026–Oct 18, 2026 · UTC dates · today is excluded

Congress purchases

Sparse history

Only 0 of 12 earlier periods had activity. That is too little recurring activity to label this count unusual.

Latest 28 days
0
Earlier median
0
Earlier range
0–0
Distinct filers per 28 daysScale: 0–1
Oct 20, 2025Oct 18, 2026
Earlier periodsLatest 28 daysEarlier median 0

Who appears in the latest period?

No named filers on file for this period.

Up to three filers; one example disclosure each.

Inspect this period’s filings

The history behind this view

First stored company disclosure: Feb 24, 2016. Newest disclosure across this feed: Oct 15, 2026.

Earlier periods in the comparison: 12. Outlined periods are missing data, so they are left out of the comparison. The chart scale changes with the category.

Exact counts, dates and filings for all four categories
Insider purchases · Short history

Only 3 earlier periods are on file to compare with. We need at least 6 full periods before calling a count unusual. Earlier median: 0; range: 0–1.

Insider purchases: distinct filers in stored disclosures
Period and filingsFilersHistory
Oct 20, 2025–Nov 16, 2025—Unavailable
Nov 17, 2025–Dec 14, 2025—Unavailable
Dec 15, 2025–Jan 11, 2026—Unavailable
Jan 12, 2026–Feb 8, 2026—Unavailable
Feb 9, 2026–Mar 8, 2026—Unavailable
Mar 9, 2026–Apr 5, 2026—Unavailable
Apr 6, 2026–May 3, 2026—Unavailable
May 4, 2026–May 31, 2026—Unavailable
Jun 1, 2026–Jun 28, 20260Partial; excluded
Jun 29, 2026–Jul 26, 20260Within stored history
Jul 27, 2026–Aug 23, 20261Within stored history
Aug 24, 2026–Sep 20, 20260Within stored history
Sep 21, 2026–Oct 18, 2026Latest period0Within stored history
Insider sales · Short history

Only 3 earlier periods are on file to compare with. We need at least 6 full periods before calling a count unusual. Earlier median: 0; range: 0–7.

Insider sales: distinct filers in stored disclosures
Period and filingsFilersHistory
Oct 20, 2025–Nov 16, 2025—Unavailable
Nov 17, 2025–Dec 14, 2025—Unavailable
Dec 15, 2025–Jan 11, 2026—Unavailable
Jan 12, 2026–Feb 8, 2026—Unavailable
Feb 9, 2026–Mar 8, 2026—Unavailable
Mar 9, 2026–Apr 5, 2026—Unavailable
Apr 6, 2026–May 3, 2026—Unavailable
May 4, 2026–May 31, 2026—Unavailable
Jun 1, 2026–Jun 28, 20264Partial; excluded
Jun 29, 2026–Jul 26, 20267Within stored history
Jul 27, 2026–Aug 23, 20260Within stored history
Aug 24, 2026–Sep 20, 20260Within stored history
Sep 21, 2026–Oct 18, 2026Latest period0Within stored history
Congress purchases · Sparse history

Only 0 of 12 earlier periods had activity. That is too little recurring activity to label this count unusual. Earlier median: 0; range: 0–0.

Congress purchases: distinct filers in stored disclosures
Period and filingsFilersHistory
Oct 20, 2025–Nov 16, 20250Within stored history
Nov 17, 2025–Dec 14, 20250Within stored history
Dec 15, 2025–Jan 11, 20260Within stored history
Jan 12, 2026–Feb 8, 20260Within stored history
Feb 9, 2026–Mar 8, 20260Within stored history
Mar 9, 2026–Apr 5, 20260Within stored history
Apr 6, 2026–May 3, 20260Within stored history
May 4, 2026–May 31, 20260Within stored history
Jun 1, 2026–Jun 28, 20260Within stored history
Jun 29, 2026–Jul 26, 20260Within stored history
Jul 27, 2026–Aug 23, 20260Within stored history
Aug 24, 2026–Sep 20, 20260Within stored history
Sep 21, 2026–Oct 18, 2026Latest period0Within stored history
Congress sales · Sparse history

Only 0 of 12 earlier periods had activity. That is too little recurring activity to label this count unusual. Earlier median: 0; range: 0–0.

Congress sales: distinct filers in stored disclosures
Period and filingsFilersHistory
Oct 20, 2025–Nov 16, 20250Within stored history
Nov 17, 2025–Dec 14, 20250Within stored history
Dec 15, 2025–Jan 11, 20260Within stored history
Jan 12, 2026–Feb 8, 20260Within stored history
Feb 9, 2026–Mar 8, 20260Within stored history
Mar 9, 2026–Apr 5, 20260Within stored history
Apr 6, 2026–May 3, 20260Within stored history
May 4, 2026–May 31, 20260Within stored history
Jun 1, 2026–Jun 28, 20260Within stored history
Jun 29, 2026–Jul 26, 20260Within stored history
Jul 27, 2026–Aug 23, 20260Within stored history
Aug 24, 2026–Sep 20, 20260Within stored history
Sep 21, 2026–Oct 18, 2026Latest period0Within stored history
How to read this comparison

The median is the middle count in up to 12 earlier, non-overlapping 28-day periods; the range runs from the smallest to the largest count. The latest period is excluded from both. A comparison needs at least 6 earlier periods, including 3 with activity. The feed’s latest disclosure must be within 7 days of the current period’s end. This freshness check does not verify complete collection.

Insiders include individuals and reporting entities; only purchase and sale codes enter this view. Congress counts reporting members, including their disclosed family transactions. The same filer can appear in purchases and sales, so these categories should not be added into a net count.

These are stored disclosures, not a complete measure of trading. Reporting delays and collection gaps can change the comparison. More activity does not identify a motive or predict a stock’s return.

Company timeline

What has been happening?

May 1, 2026–Oct 16, 2026. Select a month in a category to inspect its records.

Company filings

Insiders

FDA & trials

Insiders · Oct 2026

  1. Filed
All 31 records in this snapshot
  1. Filed
  2. Filed
  3. Filed
  4. Filed
  5. Filed
  6. Filed
  7. Record date
  8. Disclosed
    Michael R Hayden · Purchase

    Transaction dated Jul 31, 2026

  9. Disclosed
    Michael R Hayden · Purchase

    Transaction dated Jul 30, 2026

  10. Disclosed
    Allene M. Diaz · Sale

    Transaction dated Jul 7, 2026

  11. Disclosed
    C Frank Bennett · Sale

    Transaction dated Jul 7, 2026

  12. Disclosed
    C Frank Bennett · Sale

    Transaction dated Jul 7, 2026

  13. Record date
  14. Disclosed
    Holly B. Kordasiewicz · Sale

    Transaction dated Jul 7, 2026

  15. Filed
  16. Filed
  17. Filed
  18. Disclosed
    Joseph Klein III · Sale

    Transaction dated Jul 1, 2026

  19. Disclosed
    Joseph Klein III · Sale

    Transaction dated Jul 1, 2026

  20. Filed
  21. Disclosed
    Eugene Schneider · Sale

    Transaction dated Jun 26, 2026

  22. Disclosed
    Joseph Baroldi · Sale

    Transaction dated Jun 26, 2026

  23. Disclosed
    Patrick R. O'Neil · Sale

    Transaction dated Jun 26, 2026

  24. Disclosed
    Brett P Monia · Sale

    Transaction dated Jun 26, 2026

  25. Disclosed
    Brett P Monia · Sale

    Transaction dated Jun 25, 2026

  26. Disclosed
    Brett P Monia · Sale

    Transaction dated Jun 24, 2026

  27. Disclosed
    Eric Swayze · Sale

    Transaction dated Jun 25, 2026

  28. Disclosed
    Holly B. Kordasiewicz · Sale

    Transaction dated Jun 12, 2026

  29. Disclosed
    Holly B. Kordasiewicz · Sale

    Transaction dated Jun 12, 2026

  30. Disclosed
    Spencer R Berthelsen · Sale

    Transaction dated Jun 15, 2026

  31. Record date

Month counts include every record on file. The lists show the newest records on this page. A dash means none on file that month. Trades use disclosure dates; contract dates follow the source record. Nearby events do not establish the cause of a price move.

Who's buying and selling · last 90 days

Congress

No Congress trades on IONS disclosed in the last 90 days.

See every Congress trade on IONS →

Company insiders

1 buy · 0 sells (2 filed lots) · $1.1M bought

  1. ▲ BUYMichael R Hayden DirectorIONS Ionis Pharmaceuticals Inc$258Kdisclosed Jul 31 · filed the same day
  2. ▲ BUYMichael R Hayden DirectorIONS Ionis Pharmaceuticals Inc$801Kdisclosed Jul 31 · filed 1 day after the trade
See every insider trade on IONS →

Filings & events

Company filings (8-K) 115

Events the company must report to the SEC within days — results, deals, departures, restatements.

What it files 8-Ks about

  • Other events · item 8.0123
  • Shared information with investors · item 7.0115
  • Quarterly or yearly results · item 2.0211
  • Signed a major agreement · item 1.018
  • Directors or officers joined, left or got new pay · item 5.025
  • Shareholder vote results · item 5.073

Filing red flags 15

Warning signs in the company's own SEC filings — going-concern doubts, control weaknesses, staff comment letters, late filings, restatements, Wells notices, clinical holds, dividend cuts.

Lobbying 10

Lobbying reports filed with the Senate for the company.

$800K across 10 reports

Issues named in the most reports

  • Health Issues 10
  • Medicare/Medicaid 5
  • Taxation/Internal Revenue Code 5

Planned insider sales (Form 144) 167

Notices insiders file before they sell certain shares, such as ones they got straight from the company.

1 in the last 90 days · 167 notices on file

The notices on file don't give the sale's size; each sale shows up under company insiders once it is reported.

5% owners (13D / 13G) 2

Investors who reported owning 5% or more — 13D for owners who may push for changes, 13G for owners who just hold.

Push for changes, or just hold?

  • 13G, just holds: 2 filings

Filed by Vanguard Capital Management LLC · Capital World Investors

Biggest named funds (13F)

The largest IONS holdings among the well-known funds whose quarterly 13F filings we read — opens here.

Every disclosed trade on IONS

  1. ▲ BUYMichael R Hayden DirectorIONS Ionis Pharmaceuticals Inc$258Kdisclosed Jul 31 · filed the same day
  2. ▲ BUYMichael R Hayden DirectorIONS Ionis Pharmaceuticals Inc$801Kdisclosed Jul 31 · filed 1 day after the trade
  3. ▼ SELLC Frank Bennett EVP, Chief Scientific OfficerIONS Ionis Pharmaceuticals Inc$1.3Mdisclosed Jul 9 · filed 2 days after the trade
  4. ▼ SELLC Frank Bennett EVP, Chief Scientific OfficerIONS Ionis Pharmaceuticals Inc$463Kdisclosed Jul 9 · filed 2 days after the trade
  5. ▼ SELLHolly B. Kordasiewicz EVP, Chief Development OfficerIONS Ionis Pharmaceuticals Inc$30.5Kdisclosed Jul 9 · filed 2 days after the trade
  6. ▼ SELLAllene M. Diaz DirectorIONS Ionis Pharmaceuticals Inc$864Kdisclosed Jul 9 · filed 2 days after the trade
  7. ▼ SELLJoseph Klein III DirectorIONS Ionis Pharmaceuticals Inc$903Kdisclosed Jul 6 · filed 5 days after the trade · late
  8. ▼ SELLJoseph Klein III DirectorIONS Ionis Pharmaceuticals Inc$7.9Kdisclosed Jul 6 · filed 5 days after the trade · late
  9. ▼ SELLJoseph Baroldi EVP, Chief Business OfficerIONS Ionis Pharmaceuticals Inc$452Kdisclosed Jun 30 · filed 4 days after the trade
  10. ▼ SELLEugene Schneider EVP, Chf Clinical Develop OfcrIONS Ionis Pharmaceuticals Inc$2.1Mdisclosed Jun 30 · filed 4 days after the trade
  11. ▼ SELLPatrick R. O'Neil EVP CLO & General CounselIONS Ionis Pharmaceuticals Inc$246Kdisclosed Jun 30 · filed 4 days after the trade
  12. ▼ SELLBrett P Monia Chief Executive OfficerIONS Ionis Pharmaceuticals Inc$4Mdisclosed Jun 26 · filed the same day
  13. ▼ SELLEric Swayze EVP ResearchIONS Ionis Pharmaceuticals Inc$839Kdisclosed Jun 26 · filed 1 day after the trade
  14. ▼ SELLBrett P Monia Chief Executive OfficerIONS Ionis Pharmaceuticals Inc$1.7Mdisclosed Jun 26 · filed 1 day after the trade
  15. ▼ SELLBrett P Monia Chief Executive OfficerIONS Ionis Pharmaceuticals Inc$1.1Mdisclosed Jun 26 · filed 2 days after the trade
  16. ▼ SELLSpencer R Berthelsen DirectorIONS Ionis Pharmaceuticals Inc$588Kdisclosed Jun 16 · filed 1 day after the trade
  17. ▼ SELLHolly B. Kordasiewicz EVP, Chief Development OfficerIONS Ionis Pharmaceuticals Inc$1.5Mdisclosed Jun 16 · filed 4 days after the trade
  18. ▼ SELLHolly B. Kordasiewicz EVP, Chief Development OfficerIONS Ionis Pharmaceuticals Inc$3Mdisclosed Jun 16 · filed 4 days after the trade
  19. ▼ SELLSheldon Whitehouse Dem · Senate · RIIONS Ionis Pharmaceuticals Inc$1K–$15Kdisclosed Feb 24, 2016 · filed 35 days after the trade
See the trades on IONS in the feed →
People & votes

Which members of Congress traded IONS, sponsored bills that touch it and voted on them — opens here.