Blackford Quentin S. Insider Trading Activity
Blackford Quentin S. has been net-selling over the last 12 months with 0 purchases and 12 sales across 1 company.
IRTC is the most-traded position with 12 trades. The largest single transaction was a sale of IRTC for $3.5M on Feb 25, 2026.
Performance Scorecard
Forward stock performance after each transaction by Blackford Quentin S.. 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 | — | -4.2% | 33% | 12 |
| 90 days | — | -1.1% | 42% | 12 |
| 120 days | — | -7.5% | 13% | 8 |
Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.
Price & Trades
Pro: Trade MarkersIRTC · iRhythm Holdings, Inc.
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| DATE | TICKER | TYPE | SHARES | PRICE | VALUE | ROLE |
|---|---|---|---|---|---|---|
| Mar 2, 2026 | IRTC | Sell | 4,347 | $128.44 | $558K | CEO |
| Mar 2, 2026 | IRTC | Sell | 4,043 | $128.44 | $519K | CEO |
| Mar 2, 2026 | IRTC | Sell | 5,423 | $128.44 | $697K | CEO |
| Feb 25, 2026 | IRTC | Sell | 25,540 | $135.42 | $3.5M | CEO |
| Nov 3, 2025 | IRTC | Sell | 14,059 | $182.94 | $2.6M | CEO |
| Aug 5, 2025 | IRTC | Sell | 8,726 | $158.85 | $1.4M | CEO |
| Aug 5, 2025 | IRTC | Sell | 9,775 | $160.06 | $1.6M | CEO |
| Aug 5, 2025 | IRTC | Sell | 4,905 | $160.73 | $788K | CEO |
| Aug 5, 2025 | IRTC | Sell | 1,600 | $161.92 | $259K | CEO |
| Aug 5, 2025 | IRTC | Sell | 1,514 | $163.30 | $247K | CEO |
| Aug 5, 2025 | IRTC | Sell | 3,174 | $163.93 | $520K | CEO |
| Aug 5, 2025 | IRTC | Sell | 306 | $165.00 | $50K | CEO |
Top Companies Traded
| TICKER | COMPANY | TRADES | TOTAL VOLUME |
|---|---|---|---|
| IRTC | iRhythm Holdings, Inc. | 12 | $12.6M |
Other insiders at iRhythm Holdings, Inc.
8 other tracked filers at IRTC.