Birchler Brian Insider Trading Activity
Birchler Brian has been net-selling over the last 12 months with 0 purchases and 6 sales across 1 company.
IONS is the most-traded position with 6 trades. The largest single transaction was a sale of IONS for $897K on Oct 15, 2025.
Performance Scorecard
Forward stock performance after each transaction by Birchler Brian. 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 | — | -1.1% | 67% | 6 |
| 90 days | — | +0.3% | 33% | 6 |
| 120 days | — | -3.0% | 60% | 5 |
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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Upgrade to ProRecent Trades
| DATE | TICKER | TYPE | SHARES | PRICE | VALUE | Δ OWNED | ROLE | FILING |
|---|---|---|---|---|---|---|---|---|
Apr 16, 2026 | IONS | Sell | 973 | $75.04 | $73K | −1.4% | VP | |
Jan 30, 2026 | IONS | Sell | 6,179 | $83.03 | $513K | −8.5% | VP | |
Jan 16, 2026 | IONS | Sell | 8,480 | $75.11 | $637K | −12.3% | VP | |
Nov 6, 2025 | IONS | Sell | 8,000 | $76.17 | $609K | −14.1% | VP | |
Oct 15, 2025 | IONS | Sell | 12,425 | $72.23 | $897K | −17.9% | VP | |
Oct 14, 2025 | IONS | Sell | 11,475 | $72.03 | $827K | −16.8% | VP |
Top Companies Traded
| TICKER | COMPANY | TRADES | TOTAL VOLUME |
|---|---|---|---|
| IONS | IONIS PHARMACEUTICALS INC | 6 | $3.6M |
Other insiders at IONIS PHARMACEUTICALS INC
10 other tracked filers at IONS.