Cloonan Michael Insider Trading Activity
Cloonan Michael has been net-selling over the last 12 months with 0 purchases and 12 sales across 1 company.
SION is the most-traded position with 12 trades. The largest single transaction was a sale of SION for $1.3M on Oct 21, 2025.
Performance Scorecard
Forward stock performance after each transaction by Cloonan Michael. 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 | — | -15.3% | 0% | 12 |
| 90 days | — | -36.5% | 0% | 12 |
| 120 days | — | -34.1% | 0% | 12 |
Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.
Price & Trades
Pro: Trade MarkersSION · Sionna Therapeutics, Inc.
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| DATE | TICKER | TYPE | SHARES | PRICE | VALUE | ROLE |
|---|---|---|---|---|---|---|
| Oct 21, 2025 | SION | Sell | 13,324 | $34.44 | $459K | CEO |
| Oct 21, 2025 | SION | Sell | 30,049 | $35.63 | $1.1M | CEO |
| Oct 21, 2025 | SION | Sell | 22,895 | $36.60 | $838K | CEO |
| Oct 21, 2025 | SION | Sell | 33,532 | $37.31 | $1.3M | CEO |
| Oct 16, 2025 | SION | Sell | 200 | $34.00 | $7K | CEO |
| Oct 16, 2025 | SION | Sell | 10,225 | $31.46 | $322K | CEO |
| Oct 15, 2025 | SION | Sell | 14,775 | $31.11 | $460K | CEO |
| Sep 29, 2025 | SION | Sell | 7,793 | $29.70 | $231K | CEO |
| Sep 26, 2025 | SION | Sell | 17,207 | $28.85 | $496K | CEO |
| Aug 27, 2025 | SION | Sell | 7,426 | $25.01 | $186K | CEO |
| Aug 26, 2025 | SION | Sell | 17,574 | $24.96 | $439K | CEO |
| Aug 20, 2025 | SION | Sell | 25,000 | $22.75 | $569K | CEO |
Top Companies Traded
| TICKER | COMPANY | TRADES | TOTAL VOLUME |
|---|---|---|---|
| SION | Sionna Therapeutics, Inc. | 12 | $6.3M |
Other insiders at Sionna Therapeutics, Inc.
6 other tracked filers at SION.