Quentin S. Blackford insider trades: iRhythm Holdings (IRTC) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Quentin reports to the SEC
and 1 more company
Open-market buys and sales
27 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Aug 10, 2026 | IRTC | ↓ Sell | 26,859 | $124.65 | $3.3M | Direct | Aug 11, 2026 (1d) |
| Mar 2, 2026 | IRTC | ↓ Sell | 13,813 | $128.44 | $1.8M | Direct | Mar 3, 2026 (1d) |
| Nov 3, 2025 | IRTC | ↓ Sell | 14,059 | $182.94 | $2.6M | Direct | Nov 4, 2025 (1d) |
| Aug 5, 2025 | IRTC | ↓ Sell10b5-1 | 30,000 | $160.54 | $4.8M | Direct | Aug 6, 2025 (1d) |
| Mar 3, 2025 | IRTC | ↓ Sell | 8,145 | $108.77 | $886K | Direct | Mar 4, 2025 (1d) |
| Feb 26, 2025 | IRTC | ↓ Sell | 22,252 | $112.13 | $2.5M | Direct | Feb 27, 2025 (1d) |
| Nov 4, 2024 | IRTC | ↓ Sell | 16,145 | $77.41 | $1.2M | Direct | Nov 5, 2024 (1d) |
| Mar 7, 2024 | ATEC | ↑ Buy | 20,000 | $12.83 | $257K | Direct | Mar 8, 2024 (1d) |
| Mar 4, 2024 | IRTC | ↓ Sell | 4,221 | $111.14 | $469K | Direct | Mar 5, 2024 (1d) |
| Feb 29, 2024 | IRTC | ↓ Sell | 24,701 | $121.96 | $3.0M | Direct | Mar 1, 2024 (1d) |
| Nov 2, 2022 | IRTC | ↓ Sell | 12,699 | $122.40 | $1.6M | Direct | Nov 4, 2022 (2d) |
| Sep 10, 2021 | DXCM | ↓ Sell10b5-1 | 18,662 | $547.62 | $10.2M | Direct | Sep 10, 2021 (0d) |
| May 28, 2021 | DXCM | ↓ Sell10b5-1 | 7,223 | $375.00 | $2.7M | Direct | Jun 1, 2021 (4d) |
| Mar 10, 2021 | DXCM | ↓ Sell | 6,509 | $362.22 | $2.4M | Direct | Mar 12, 2021 (2d) |
| Sep 10, 2020 | DXCM | ↓ Sell10b5-1 | 25,079 | $399.41 | $10.0M | Direct | Sep 11, 2020 (1d) |
| Mar 12, 2020 | DXCM | ↓ Sell10b5-1 | 12,561 | $248.98 | $3.1M | Direct | Mar 13, 2020 (1d) |
| Mar 9, 2020 | DXCM | ↓ Sell10b5-1 | 891 | $261.00 | $233K | Direct | Mar 10, 2020 (1d) |
| Sep 10, 2019 | DXCM | ↓ Sell10b5-1 | 10,320 | $141.25 | $1.5M | Direct | Sep 12, 2019 (2d) |
| Sep 9, 2019 | DXCM | ↓ Sell | 11,686 | $149.86 | $1.8M | Direct | Sep 11, 2019 (2d) |
| Aug 12, 2019 | AXGN | ↑ Buy | 15,535 | $14.01 | $218K | Direct | Aug 13, 2019 (1d) |
| May 29, 2019 | DXCM | ↓ Sell10b5-1 | 8,874 | $118.95 | $1.1M | Direct | May 30, 2019 (1d) |
| Mar 12, 2019 | DXCM | ↓ Sell | 5,358 | $142.79 | $765K | Direct | Mar 13, 2019 (1d) |
| Sep 11, 2018 | DXCM | ↓ Sell10b5-1 | 8,440 | $147.04 | $1.2M | Direct | Sep 13, 2018 (2d) |
| Sep 10, 2018 | DXCM | ↓ Sell | 7,149 | $143.76 | $1.0M | Direct | Sep 12, 2018 (2d) |
| Dec 7, 2015 | NUVA | ↓ Sell10b5-1 | 15,000 | $51.10 | $767K | Direct | Dec 7, 2015 (0d) |
| Nov 19, 2014 | NUVA | ↓ Sell10b5-1 | 7,698 | $43.41 | $334K | Direct | Nov 20, 2014 (1d) |
| Oct 3, 2014 | NUVA | ↓ Sell10b5-1 | 5,000 | $36.30 | $182K | Direct | Apr 8, 2015 (187d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other IRTC insiders
Open-market trades in the last 12 months
About Quentin S. Blackford's insider trades
Quentin S. Blackford is President and CEO at iRhythm Holdings (IRTC). Since Oct 3, 2014, Quentin has reported 2 open-market purchases worth $474K and 25 sales worth $59.4M on SEC Form 4. In the last 12 months: 2 sales ($5.1M).
12 sales (61% of the value sold) were made under a Rule 10b5-1 trading plan, which is set up months in advance and runs on a schedule, so they say little about how the insider sees the stock today.
Their filings also include grants and awards (39 filings), shares withheld for taxes (9 filings), option exercises (7 filings), gifts (3 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every IRTC insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.