Ionis Pharmaceuticals Inc. (IONS)
Ionis Pharmaceuticals Inc. (IONS) Insider Trading
Directors, officers and holders of more than 10% of IONS report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.
Recent Form 4 transactions
The 50 most recent of 717 transactions on file: 2 with code P, 8 with code S and 40 with other codes.
| Date | Insider | Title | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Oct 16, 2026 | Devers Shannon L. | EVP, Chief Human Resources Ofc | S Sale | 1,357 | $43.54 | $59,082 |
| Oct 16, 2026 | Swayze Eric | EVP Research | S Sale | 53 | $43.54 | $2,308 |
| Oct 15, 2026 | Swayze Eric | EVP Research | M Exercise | 125 | Not measured | Not measured |
| Oct 15, 2026 | Swayze Eric | EVP Research | M Exercise | 125 | Not measured | Not measured |
| Oct 15, 2026 | Devers Shannon L. | EVP, Chief Human Resources Ofc | M Exercise | 2,820 | Not measured | Not measured |
| Oct 15, 2026 | Devers Shannon L. | EVP, Chief Human Resources Ofc | M Exercise | 2,820 | Not measured | Not measured |
| Aug 31, 2026 | O'NEIL PATRICK R. | EVP CLO & General Counsel | J Other | 63 | $51.31 | $3,232 |
| Aug 31, 2026 | Birchler Brian | EVP, Corp and Development Ops | J Other | 58 | $51.31 | $2,976 |
| Aug 31, 2026 | BENNETT C FRANK | EVP, Chief Scientific Officer | J Other | 110 | $51.31 | $5,644 |
| Aug 31, 2026 | Monia Brett P | Chief Executive Officer | J Other | 98 | $51.31 | $5,028 |
| Jul 31, 2026 | Hayden Michael R | Director | P Purchase | 5,000 | $51.60 | $258,000 |
| Jul 30, 2026 | Hayden Michael R | Director | P Purchase | 15,000 | $53.38 | $800,700 |
| Jul 15, 2026 | HANTSON LUDWIG | Director | A Award | 3,399 | Not measured | Not measured |
| Jul 15, 2026 | HERMAN JOAN E | Director | M Exercise | 5,220 | Not measured | Not measured |
| Jul 15, 2026 | BERTHELSEN SPENCER R | Director | M Exercise | 5,220 | Not measured | Not measured |
| Jul 15, 2026 | Reikes Peter N | Director | A Award | 3,399 | Not measured | Not measured |
| Jul 15, 2026 | BERTHELSEN SPENCER R | Director | M Exercise | 5,220 | Not measured | Not measured |
| Jul 15, 2026 | HERMAN JOAN E | Director | M Exercise | 5,220 | Not measured | Not measured |
| Jul 7, 2026 | BENNETT C FRANK | EVP, Chief Scientific Officer | S Sale | 15,000 | $85.46 | $1,281,930 |
| Jul 7, 2026 | Diaz Allene M. | Director | M Exercise | 10,111 | $47.11 | $476,329 |
| Jul 7, 2026 | BENNETT C FRANK | EVP, Chief Scientific Officer | J Other | 15,000 | Not measured | Not measured |
| Jul 7, 2026 | BENNETT C FRANK | EVP, Chief Scientific Officer | J Other | 15,000 | Not measured | Not measured |
| Jul 7, 2026 | Diaz Allene M. | Director | S Sale | 10,111 | $85.42 | $863,637 |
| Jul 7, 2026 | Kordasiewicz Holly B. | EVP, Chief Development Officer | S Sale | 362 | $84.30 | $30,517 |
| Jul 7, 2026 | Diaz Allene M. | Director | M Exercise | 10,111 | Not measured | Not measured |
| Jul 7, 2026 | BENNETT C FRANK | EVP, Chief Scientific Officer | S Sale | 5,536 | $83.58 | $462,693 |
| Jul 1, 2026 | BERTHELSEN SPENCER R | Director | A Award | 5,369 | Not measured | Not measured |
| Jul 1, 2026 | BERTHELSEN SPENCER R | Director | A Award | 2,301 | Not measured | Not measured |
| Jul 1, 2026 | LOSCALZO JOSEPH | Director | A Award | 2,301 | Not measured | Not measured |
| Jul 1, 2026 | HERMAN JOAN E | Director | A Award | 2,301 | Not measured | Not measured |
| Jul 1, 2026 | KLEIN JOSEPH III | Director | M Exercise | 11,518 | $39.94 | $460,029 |
| Jul 1, 2026 | HERMAN JOAN E | Director | A Award | 5,369 | Not measured | Not measured |
| Jul 1, 2026 | Hayden Michael R | Director | A Award | 5,369 | Not measured | Not measured |
| Jul 1, 2026 | YANG MICHAEL J. | Director | A Award | 5,369 | Not measured | Not measured |
| Jul 1, 2026 | KLEIN JOSEPH III | Director | S Sale | 11,419 | $79.04 | $902,551 |
| Jul 1, 2026 | KLEIN JOSEPH III | Director | M Exercise | 11,518 | Not measured | Not measured |
| Jul 1, 2026 | KLEIN JOSEPH III | Director | A Award | 5,369 | Not measured | Not measured |
| Jul 1, 2026 | Diaz Allene M. | Director | A Award | 5,369 | Not measured | Not measured |
| Jul 1, 2026 | YANG MICHAEL J. | Director | A Award | 2,301 | Not measured | Not measured |
| Jul 1, 2026 | Diaz Allene M. | Director | A Award | 2,301 | Not measured | Not measured |
| Jul 1, 2026 | KLEIN JOSEPH III | Director | A Award | 2,301 | Not measured | Not measured |
| Jul 1, 2026 | Hayden Michael R | Director | A Award | 2,301 | Not measured | Not measured |
| Jul 1, 2026 | LOSCALZO JOSEPH | Director | A Award | 5,369 | Not measured | Not measured |
| Jul 1, 2026 | KLEIN JOSEPH III | Director | S Sale | 99 | $79.45 | $7,866 |
| Jun 26, 2026 | Schneider Eugene | EVP, Chf Clinical Develop Ofcr | M Exercise | 26,000 | Not measured | Not measured |
| Jun 26, 2026 | Baroldi Joseph | EVP, Chief Business Officer | M Exercise | 1,769 | Not measured | Not measured |
| Jun 26, 2026 | Schneider Eugene | EVP, Chf Clinical Develop Ofcr | M Exercise | 26,000 | $60.89 | $1,583,140 |
| Jun 26, 2026 | Baroldi Joseph | EVP, Chief Business Officer | M Exercise | 3,866 | Not measured | Not measured |
| Jun 26, 2026 | Baroldi Joseph | EVP, Chief Business Officer | M Exercise | 3,866 | $56.78 | $219,511 |
| Jun 26, 2026 | Baroldi Joseph | EVP, Chief Business Officer | M Exercise | 1,769 | $32.60 | $57,669 |
The full Form 4 history is on the IONS company page (Insider Trades card, View all).
Questions about this data
Which insider transactions are open-market trades?
Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.
How quickly are insider trades reported?
A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.
Who has to file Form 4?
Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.
Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.