Ionis Pharmaceuticals, Inc. (IONS) Insider Trading
Over the last 3 months, IONS insiders made 0 open-market buys and 23 sales, a net sale of -$24.4M (SEC Form 4). Over the last 6 months, 364 institutions increased and 302 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
23
Net (3m)
-$24.4M
Insider trades by month Buys Sells
Jan
Feb
Mar
Apr
May
Jun
Context3-month price +5.6%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Jun 30, 2026 | Schneider Eugeneofficer: EVP, Chf Clinical Develop Ofcr | Option | 26,000 | $60.89 |
| Jun 30, 2026 | O'NEIL PATRICK R.officer: EVP CLO & General Counsel | Sell | 3,069 | $80.00 |
| Jun 30, 2026 | Schneider Eugeneofficer: EVP, Chf Clinical Develop Ofcr | Sell | 26,000 | $81.05 |
| Jun 30, 2026 | Baroldi Josephofficer: EVP, Chief Business Officer | Option | 3,866 | $56.78 |
| Jun 30, 2026 | Baroldi Josephofficer: EVP, Chief Business Officer | Option | 1,769 | $32.60 |
| Jun 30, 2026 | Baroldi Josephofficer: EVP, Chief Business Officer | Sell | 5,635 | $80.16 |
| Jun 26, 2026 | Monia Brett Pdirector, officer: Chief Executive Officer | Option | 21,072 | $32.60 |
| Jun 26, 2026 | Monia Brett Pdirector, officer: Chief Executive Officer | Option | 14,565 | $32.60 |
| Jun 26, 2026 | Monia Brett Pdirector, officer: Chief Executive Officer | Option | 50,000 | $56.78 |
| Jun 26, 2026 | Swayze Ericofficer: EVP Research | Sell | 10,602 | $79.18 |
| Jun 26, 2026 | Monia Brett Pdirector, officer: Chief Executive Officer | Sell | 50,000 | $80.59 |
| Jun 26, 2026 | Monia Brett Pdirector, officer: Chief Executive Officer | Sell | 21,072 | $78.49 |
| Jun 26, 2026 | Monia Brett Pdirector, officer: Chief Executive Officer | Sell | 14,565 | $78.41 |
| Jun 16, 2026 | BERTHELSEN SPENCER Rdirector | Sell | 8,000 | $73.49 |
| Jun 16, 2026 | Kordasiewicz Holly B.officer: EVP, Chief Development Officer | Option | 19,895 | $56.78 |
| Jun 16, 2026 | Kordasiewicz Holly B.officer: EVP, Chief Development Officer | Sell | 41,004 | $73.09 |
| Jun 16, 2026 | Kordasiewicz Holly B.officer: EVP, Chief Development Officer | Sell | 19,842 | $74.05 |
| Jun 16, 2026 | BERTHELSEN SPENCER Rdirector | Option | 8,000 | $24.42 |
| Jun 16, 2026 | Kordasiewicz Holly B.officer: EVP, Chief Development Officer | Option | 21,000 | $60.89 |
| Jun 16, 2026 | Kordasiewicz Holly B.officer: EVP, Chief Development Officer | Option | 7,951 | $60.89 |
| Jun 16, 2026 | Kordasiewicz Holly B.officer: EVP, Chief Development Officer | Option | 12,000 | $32.60 |
| Jun 8, 2026 | Reikes Peter Ndirector | Grant | 10,753 | $75.13 |
| Jun 8, 2026 | HANTSON LUDWIGdirector | Grant | 10,753 | $75.13 |
| Jun 3, 2026 | BERTHELSEN SPENCER Rdirector | Sell | 8,000 | $75.67 |
| Jun 3, 2026 | BERTHELSEN SPENCER Rdirector | Option | 8,000 | $24.42 |
| May 15, 2026 | Monia Brett Pdirector, officer: Chief Executive Officer | Sell | 3,220 | $78.68 |
| May 15, 2026 | Monia Brett Pdirector, officer: Chief Executive Officer | Sell | 1,316 | $78.01 |
| May 15, 2026 | Monia Brett Pdirector, officer: Chief Executive Officer | Option | 3,220 | $32.60 |
| May 15, 2026 | Monia Brett Pdirector, officer: Chief Executive Officer | Option | 1,316 | $32.60 |
| May 6, 2026 | LOSCALZO JOSEPHdirector | Option | 12,000 | $40.05 |
Source: IONS SEC Form 4 filings, latest Jun 30, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their IONS positions over the last 6 months (SEC Form 13F).
Increased
364
New positions
175
Reduced
302
Sold out
114
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| FMR LLC | Increased | 24.6M | May 15, 2026 |
| FMR LLC | Increased | 24.1M | Feb 17, 2026 |
| CAPITAL WORLD INVESTORS | Increased | 21.2M | May 13, 2026 |
| CAPITAL WORLD INVESTORS | Increased | 18.0M | Feb 11, 2026 |
| VANGUARD GROUP INC | Reduced | 16.4M | Jan 29, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 14.2M | May 15, 2026 |
| BLACKROCK, INC. | Increased | 10.6M | Feb 12, 2026 |
| BLACKROCK, INC. | Reduced | 10.4M | May 13, 2026 |
| T. ROWE PRICE INVESTMENT MANAGEMENT, INC. | Reduced | 9.1M | Feb 19, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 7.8M | May 8, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | Increased | 6.4M | May 15, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | 6.3M | Feb 17, 2026 |
| T. ROWE PRICE INVESTMENT MANAGEMENT, INC. | Reduced | 6.2M | May 15, 2026 |
| TWO SIGMA INVESTMENTS, LP | Increased | 5.9M | May 15, 2026 |
| BELLEVUE GROUP AG | Reduced | 4.8M | Feb 17, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.