IONS
IONIS PHARMACEUTICALS INC · Healthcare · Market cap $7.3B
Insiders bought $997K net in the last 90 days ·2 sellers, 1 buyer· latest Form 4 filed Oct 20, 2026
Insider Buying
$1.1M
reported purchases (SEC code P)
Insider Selling
$133.4M
reported sales (SEC code S)
Unique Insiders
20
in the rolling window
Latest filing
Oct 20, 2026
Devers Shannon L.
IONIS PHARMACEUTICALS INC (IONS) has 85 SEC Form 4 filings (246 transaction rows) in the rolling window, disclosed by 20 distinct insiders. Most recent filing: Oct 20, 2026.
Inside the rolling window, 20 insiders at IONIS PHARMACEUTICALS INC reported 2 open-market purchases totaling $1.1M and 80 open-market sales totaling $133.4M. The most active filer is Chief Executive Officer Monia Brett P with 10 filings. Insiders have net sold $25.7M over the trailing 6 months. The most recent open-market filing is a sale of 1,357 shares by EVP, Chief Human Resources Ofc Devers Shannon L., dated Oct 16, 2026, worth $59K.
- Industry:Biotechnology
- CEO:Brett Monia
- Employees:1,480
- HQ:Carlsbad, CA, US
- IPO:1991-05-17
| Source | |||||||
|---|---|---|---|---|---|---|---|
Devers Shannon L.First in 7 months | EVP, Chief Human Resources Ofc | Sale | 1,357 | $59K | Oct 20 | -3.3% | SEC ↗ |
Swayze EricFirst in 4 months | EVP Research | Sale | 53 | $2K | Oct 20 | -3.3% | SEC ↗ |
Hayden Michael RFirst filing | Director | Purchase | 15,000 | $801K | Jul 31 | -15.2% | SEC ↗ |
Hayden Michael RFirst filing | Director | Purchase | 5,000 | $258K | Jul 31 | -15.2% | SEC ↗ |
BENNETT C FRANKFirst in 4 months | EVP, Chief Scientific Officer | Sale | 20,536 | $1.7M | Jul 9 | -31.7% | SEC ↗ |
Diaz Allene M.First in 4 months | Director | Sale | 10,111 | $864K | Jul 9 | -31.7% | SEC ↗ |
| EVP, Chief Development Officer | Sale | 362 | $31K | Jul 9 | -31.7% | SEC ↗ | |
| Director | Sale | 11,518 | $910K | Jul 6 | -47.2% | SEC ↗ | |
| EVP, Chief Business Officer | Sale | 5,635 | $452K | Jun 30 | — | SEC ↗ | |
O'NEIL PATRICK R.First in 4 months | EVP CLO & General Counsel | Sale | 3,069 | $246K | Jun 30 | — | SEC ↗ |
Schneider EugeneFirst in 3 months | EVP, Chf Clinical Develop Ofcr | Sale | 26,000 | $2.1M | Jun 30 | — | SEC ↗ |
| Chief Executive Officer | Sale | 14,565 | $1.1M | Jun 26 | — | SEC ↗ | |
| Chief Executive Officer | Sale | 21,072 | $1.7M | Jun 26 | — | SEC ↗ | |
| Chief Executive Officer | Sale | 50,000 | $4.0M | Jun 26 | — | SEC ↗ | |
Swayze EricFirst in 4 months | EVP Research | Sale | 10,602 | $839K | Jun 26 | — | SEC ↗ |
Kordasiewicz Holly B.First in 5 months | EVP, Chief Development Officer | Sale | 60,846 | $4.5M | Jun 16 | — | SEC ↗ |
| Director | Sale | 8,000 | $588K | Jun 16 | — | SEC ↗ | |
BERTHELSEN SPENCER RFirst filing | Director | Sale | 8,000 | $605K | Jun 3 | — | SEC ↗ |
| Chief Executive Officer | Sale | 1,316 | $103K | May 15 | — | SEC ↗ | |
| Chief Executive Officer | Sale | 3,220 | $253K | May 15 | — | SEC ↗ | |
| Director | Sale | 77,289 | $5.8M | May 6 | — | SEC ↗ | |
| Director | Sale | 10,111 | $743K | May 5 | — | SEC ↗ | |
| EVP, Chief Business Officer | Sale | 1,626 | $117K | Apr 30 | — | SEC ↗ | |
| EVP, Chf GL Pdt Str Ofcr | Sale | 4,902 | $368K | Apr 17 | — | SEC ↗ | |
| EVP, Chief Business Officer | Sale | 5,619 | $419K | Apr 17 | — | SEC ↗ |
Earnings: last 7 quarters
Congress trading IONS 6 all-time
- DRep. Daniel GoldmanOther$1,001 - $15,0002023-03-06
- DRep. Ro KhannaSale$1,001 - $15,0002023-03-14
- DRep. Ro KhannaPurchase$1,001 - $15,0002022-12-06
- DRep. Donna ShalalaPurchase$1,001 - $15,0002019-05-08
- DRep. Donna ShalalaOther$1,001 - $15,0002019-06-24
- DSen. Sheldon WhitehouseOther$1,001 - $15,0002016-01-20
STOCK Act disclosures are filed up to 45 days after the trade. Amount is a disclosed range, not an exact figure.
Frequently asked questions
How many SEC Form 4 insider filings does IONS have?
IONIS PHARMACEUTICALS INC (IONS) has 85 SEC Form 4 filings (246 transaction rows) in the rolling 365-day window, disclosed by 20 distinct insiders. Most recent filing: Oct 20, 2026.
When was the most recent SEC Form 4 filing for IONS?
The most recent Form 4 filing for IONS on Tracefour is dated Oct 20, 2026.
Who is the most active insider at IONS?
The most active SEC Form 4 filer at IONS in the rolling window is Chief Executive Officer Monia Brett P, with 10 filings.
What is the net insider flow at IONS over the last 6 months?
Over the trailing 180 days, insiders at IONS have net sold $25.7M based on SEC Form 4 disclosures.
What is the total insider buy and sell value at IONS in the current window?
Inside the rolling window, insiders at IONS bought $1.1M and sold $133.4M based on SEC Form 4 filings.
Can I get alerts for IONS insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at IONIS PHARMACEUTICALS INC (IONS). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
IONIS PHARMACEUTICALS INC is in the Healthcare sector.