Joseph Klein III Insider Trading Activity
Joseph Klein III has been net-selling over the last 12 months with 0 purchases and 10 sales across 1 company.
IONS is the most-traded position with 10 trades. The largest single transaction was a sale of IONS for $1.7M on Sep 3, 2025.
Performance Scorecard
Forward stock performance after each transaction by Joseph Klein III. Buy returns measure price movement after open-market purchases; sell-avoided measures the loss avoided after open-market sales. Success rate counts trades where the insider's direction was right.
| PERIOD | AVG BUY RETURN | AVG SELL AVOIDED | SUCCESS RATE | TRADES |
|---|---|---|---|---|
| 30 days | — | -1.4% | 60% | 10 |
| 90 days | — | -9.9% | 50% | 6 |
| 120 days | — | -18.8% | 33% | 3 |
Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.
Price & Trades
Pro: Trade MarkersIONS · IONIS PHARMACEUTICALS INC
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| DATE | TICKER | TYPE | SHARES | PRICE | VALUE | ROLE |
|---|---|---|---|---|---|---|
| May 1, 2026 | IONS | Sell | 8,680 | $73.35 | $637K | Director |
| May 1, 2026 | IONS | Sell | 1,431 | $74.45 | $107K | Director |
| Apr 1, 2026 | IONS | Sell | 20,105 | $75.50 | $1.5M | Director |
| Apr 1, 2026 | IONS | Sell | 2,216 | $75.95 | $168K | Director |
| Mar 3, 2026 | IONS | Sell | 13,526 | $79.17 | $1.1M | Director |
| Mar 3, 2026 | IONS | Sell | 6,794 | $80.00 | $543K | Director |
| Mar 3, 2026 | IONS | Sell | 1,012 | $80.82 | $82K | Director |
| Nov 25, 2025 | IONS | Sell | 4,000 | $80.00 | $320K | Director |
| Sep 3, 2025 | IONS | Sell | 28,000 | $60.00 | $1.7M | Director |
| Sep 3, 2025 | IONS | Sell | 28,000 | $60.00 | $1.7M | Director |
Top Companies Traded
| TICKER | COMPANY | TRADES | TOTAL VOLUME |
|---|---|---|---|
| IONS | IONIS PHARMACEUTICALS INC | 10 | $7.8M |
Other insiders at IONIS PHARMACEUTICALS INC
10 other tracked filers at IONS.