Insider · CIK 0001700619
Richard Alexander Collins
director
Files at DXCM (DEXCOM INC). First filing Nov 10, 2025, latest Nov 17, 2025.
Track record
Not enough history
Fewer than three past buys with six months of prices.
Median 6-month excess
-
after past buys, n = 0
Hit rate
-
past buys that beat the index over 6 months
Open-market trades
0 / 2
$0 bought, $389k sold
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
DXCM: DEXCOM INC
DXCMOct 9, 2026 · close 84.11
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 14Weak | DEXCOM INC | $172k 2,906 shares | -8% | +6% from low-36% from high | |
| 15Weak | DEXCOM INC | $218k 3,948 shares | -9% | 0% from low-40% from high |
Transactions
Every row this insider has filed, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Nov 14, 2025 | DXCM DEXCOM INC | SOpen-market sale Common Stockindirect: by Trust10b5-1 | -2,906 | $59.05 | $172k | 35,088 | Nov 17, 2025 |
| Nov 10, 2025 | DXCM DEXCOM INC | SOpen-market sale Common Stockindirect: by Trust10b5-1 | -3,948 | $55.17 | $218k | 37,994 | Nov 10, 2025 |
| May 8, 2025 | DXCM DEXCOM INC | GGift Common Stock | -2,632 | $0.00 | $0 | 0 | May 12, 2025 |
| May 8, 2025 | DXCM DEXCOM INC | GGift Common Stockindirect: by Trust | +2,632 | $0.00 | $0 | 41,942 | May 12, 2025 |
| May 8, 2025 | DXCM DEXCOM INC | AGrant or award Common Stock | +5,074 | $0.00 | $0 | 5,074 | May 12, 2025 |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.