Ionis Pharmaceuticals Inc (IONS) insider trading.
In Q3 2026, insiders at Ionis Pharmaceuticals Inc reported 17 non-derivative transactions on 19 Forms 3, 4 and 5: 2 open-market purchases worth $1.1M and 6 sales worth $3.5M.
- Transactions
- 17
- Purchases (P)
- 2
- Sales (S)
- 6
- Net shares, P minus S
- -22,527
- Insiders
- 10
- Last filed
- 2026-09-02
Insiders
| Insider | Relationship | Transactions | Buys | Sales |
|---|---|---|---|---|
| Bennett C Frank | Officer · EVP, Chief Scientific Officer | 4 | 0 | 2 |
| Klein Joseph III | Director | 3 | 0 | 2 |
| Hayden Michael R | Director | 2 | 2 | 0 |
| Diaz Allene M. | Director | 2 | 0 | 1 |
| Birchler Brian | Officer · EVP, Corp and Development Ops | 1 | 0 | 0 |
| Monia Brett P | Director, Officer · Chief Executive Officer | 1 | 0 | 0 |
| O'Neil Patrick R. | Officer · EVP CLO & General Counsel | 1 | 0 | 0 |
| Berthelsen Spencer R | Director | 1 | 0 | 0 |
| Herman Joan E | Director | 1 | 0 | 0 |
| Kordasiewicz Holly B. | Officer · EVP, Chief Development Officer | 1 | 0 | 1 |
Transactions
| Date | Insider | Code | Shares | Price | Owned after | Filing |
|---|---|---|---|---|---|---|
| 2026-08-31 | Birchler Brian | J (A) | 58 | $51.31 | 102,883 | Form 4 |
| 2026-08-31 | Monia Brett P | J (A) | 98 | $51.31 | 242,760 | Form 4 |
| 2026-08-31 | O'Neil Patrick R. | J (A) | 63 | $51.31 | 59,205 | Form 4 |
| 2026-08-31 | Bennett C Frank | J (A) | 110 | $51.31 | 60,128 | Form 4 |
| 2026-07-31 | Hayden Michael R | P (A) | 5,000 | $51.6 | 24,000 | Form 4 |
| 2026-07-30 | Hayden Michael R | P (A) | 15,000 | $53.38 | 19,000 | Form 4 |
| 2026-07-15 | Berthelsen Spencer R | M (A) | 5,220 | $0 | 161,233 | Form 4 |
| 2026-07-15 | Herman Joan E | M (A) | 5,220 | $0 | 51,306 | Form 4 |
| 2026-07-07 | Kordasiewicz Holly B. | S (D) | 362 | $84.3 | 22,096 | Form 4 |
| 2026-07-07 | Diaz Allene M. | S (D) | 10,111 | $85.42 | 3,811 | Form 4 |
| 2026-07-07 | Diaz Allene M. | M (A) | 10,111 | $47.11 | 13,922 | Form 4 |
| 2026-07-07 | Bennett C Frank | S (D) | 15,000 | $85.46 | 0 | Form 4 |
| 2026-07-07 | Bennett C Frank | S (D) | 5,536 | $83.58 | 75,018 | Form 4 |
| 2026-07-07 | Bennett C Frank | J (A) | 15,000 | $0 | 15,000 | Form 4 |
| 2026-07-01 | Klein Joseph III | M (A) | 11,518 | $39.94 | 22,532 | Form 4 |
| 2026-07-01 | Klein Joseph III | S (D) | 99 | $79.45 | 22,433 | Form 4 |
| 2026-07-01 | Klein Joseph III | S (D) | 11,419 | $79.04 | 11,014 | Form 4 |
Transaction codes in this quarter
Get IONS insider transactions through the API
curl "https://sec-api.dev/api/v1/insider-transactions?period=2026q3&cik=874015&limit=100" \
-H "Authorization: Bearer $SEC_API_KEY"Insider trading API guide · IONS company page · Ionis Pharmaceuticals Inc on SEC.gov
Questions
Are insiders buying or selling Ionis Pharmaceuticals Inc (IONS)?
In Q3 2026, insiders at Ionis Pharmaceuticals Inc reported 17 non-derivative transactions on 19 Forms 3, 4 and 5: 2 open-market purchases worth $1.1M and 6 sales worth $3.5M. Grants, tax withholding and option exercises are counted as transactions but are not purchases or sales.
Where do these Ionis Pharmaceuticals Inc insider trades come from?
From the SEC Insider Transactions Data Sets for Q3 2026, which republish the Forms 3, 4 and 5 filed on EDGAR. Each row links to its filing on SEC.gov.
Plain-text version for agents and LLMs: /insider-trading/ions.md
Independent. Not affiliated with, endorsed by, or sponsored by the U.S. Securities and Exchange Commission. Data is reproduced from public SEC filings and datasets. Not investment advice.