IONS
IONIS PHARMACEUTICALS INC
NASDAQ · Healthcare · Biotechnology · US
$43.52
−1.96%0
Insider buys (3m)
2
Insider sells (3m)
-$61.4K
Net value (3m)
-15.7%
Price return (3m)
Form 4 filings
| Date | Insider | Activity | Shares | Price |
|---|---|---|---|---|
| Oct 19, 2026 | Swayze Eric · officer: EVP Research | Sale | 53 | $44 |
| Oct 19, 2026 | Devers Shannon L. · officer: EVP, Chief Human Resources Ofc | M-Exempt | 2,820 | $0.00 |
| Oct 19, 2026 | Devers Shannon L. · officer: EVP, Chief Human Resources Ofc | Sale | 1,357 | $44 |
| Oct 19, 2026 | Swayze Eric · officer: EVP Research | M-Exempt | 125 | $0.00 |
| Jul 31, 2026 | Hayden Michael R · director | Purchase | 5,000 | $52 |
| Jul 31, 2026 | Hayden Michael R · director | Purchase | 15,000 | $53 |
| Jul 17, 2026 | HERMAN JOAN E · director | M-Exempt | 5,220 | $0.00 |
| Jul 17, 2026 | Reikes Peter N · director | A-Award | 3,399 | $0.00 |
| Jul 17, 2026 | BERTHELSEN SPENCER R · director | M-Exempt | 5,220 | $0.00 |
| Jul 17, 2026 | HANTSON LUDWIG · director | A-Award | 3,399 | $0.00 |
| Jul 9, 2026 | Diaz Allene M. · director | M-Exempt | 10,111 | $47 |
| Jul 9, 2026 | BENNETT C FRANK · officer: EVP, Chief Scientific Officer | Sale | 15,000 | $85 |
| Jul 9, 2026 | Kordasiewicz Holly B. · officer: EVP, Chief Development Officer | Sale | 362 | $84 |
| Jul 9, 2026 | Diaz Allene M. · director | Sale | 10,111 | $85 |
| Jul 9, 2026 | BENNETT C FRANK · officer: EVP, Chief Scientific Officer | Sale | 5,536 | $84 |
| Jul 6, 2026 | BERTHELSEN SPENCER R · director | A-Award | 2,301 | $0.00 |
| Jul 6, 2026 | KLEIN JOSEPH III · director | A-Award | 5,369 | $79 |
| Jul 6, 2026 | LOSCALZO JOSEPH · director | A-Award | 2,301 | $0.00 |
| Jul 6, 2026 | Hayden Michael R · director | A-Award | 5,369 | $79 |
| Jul 6, 2026 | YANG MICHAEL J. · director | A-Award | 5,369 | $79 |
| Jul 6, 2026 | Diaz Allene M. · director | A-Award | 5,369 | $79 |
| Jul 6, 2026 | Hayden Michael R · director | A-Award | 2,301 | $0.00 |
| Jul 6, 2026 | LOSCALZO JOSEPH · director | A-Award | 5,369 | $79 |
| Jul 6, 2026 | KLEIN JOSEPH III · director | Sale | 99 | $79 |
| Jul 6, 2026 | BERTHELSEN SPENCER R · director | A-Award | 5,369 | $79 |
| Jul 6, 2026 | KLEIN JOSEPH III · director | Sale | 11,419 | $79 |
| Jul 6, 2026 | HERMAN JOAN E · director | A-Award | 5,369 | $79 |
| Jul 6, 2026 | HERMAN JOAN E · director | A-Award | 2,301 | $0.00 |
| Jul 6, 2026 | Diaz Allene M. · director | A-Award | 2,301 | $0.00 |
| Jul 6, 2026 | KLEIN JOSEPH III · director | M-Exempt | 11,518 | $40 |
Institutional positioning
13F filings over the trailing two quarters
New 142Increased 390Reduced 317Sold out 71
| Filer | Action | Shares | Filed |
|---|---|---|---|
| FMR LLC | Increased | 24,631,956 | Aug 13, 2026 |
| FMR LLC | Increased | 24,556,637 | May 15, 2026 |
| Capital World Investors | Increased | 21,669,226 | Aug 12, 2026 |
| CAPITAL WORLD INVESTORS | Increased | 21,186,369 | May 13, 2026 |
| BlackRock, Inc. | Increased | 10,704,660 | Aug 7, 2026 |
| BLACKROCK, INC. | Reduced | 10,442,476 | May 13, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 7,859,529 | Aug 13, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 7,808,902 | May 8, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | Increased | 7,651,415 | Aug 14, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 7,211,497 | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 7,118,330 | May 15, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | Increased | 6,391,816 | May 15, 2026 |
| TWO SIGMA INVESTMENTS, LP | Increased | 6,252,342 | Aug 14, 2026 |
| ROYAL BANK OF CANADA | Increased | 6,182,479 | Aug 14, 2026 |
| T. ROWE PRICE INVESTMENT MANAGEMENT, INC. | Reduced | 6,159,027 | May 15, 2026 |
Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Oct 19, 2026