Richard Alexander Collins insider trades: Dexcom (DXCM) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Richard reports to the SEC
Open-market buys and sales
4 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Nov 14, 2025 | DXCM | ↓ Sell10b5-1 | 2,906 | $59.05 | $172K | by Trust | Nov 17, 2025 (3d) |
| Nov 10, 2025 | DXCM | ↓ Sell10b5-1 | 3,948 | $55.17 | $218K | by Trust | Nov 10, 2025 (0d) |
| Nov 3, 2021 | DXCM | ↓ Sell | 1,500 | $647.05 | $971K | by Trust | Nov 29, 2021 (26d) |
| Feb 18, 2020 | DXCM | ↓ Sell10b5-1 | 4,000 | $284.40 | $1.1M | by Trust | Feb 20, 2020 (2d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other DXCM insiders
Open-market trades in the last 12 months
About Richard Alexander Collins's insider trades
Richard Alexander Collins is a director at Dexcom (DXCM). Since Feb 18, 2020, Richard has reported no open-market purchases and 4 sales worth $2.5M on SEC Form 4. In the last 12 months: 2 sales ($389K).
3 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 (9 filings), gifts (4 filings), other transactions (4 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 DXCM insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.