InsidersTradesSigma
Total declarations
Company
▲ Purchases (0 ops.)
▼ Sales (2 ops.)
Insider track record
Board DirectorDisclosed buys
0
Disclosed sells
2
T+90 hit rate
60%
T+90 mean return
+2.2%
Across 5 buy signals with a settled T+90 return. Return basis: close on the day after publication.
Signal history
Discover the detailed record of transactions filed by Collins Richard Alexander, Director. Insider active across 1 company, notably DEXCOM INC. Cumulatively, 10 disclosures have been recorded. Breakdown: 0 buy · 2 sells. Total volume traded: €1.7m. History available since 20 May 2021. The latest transaction was filed on 28 May 2026 (Attribution). Regulator: SEC (Form 4). The full history is free.
Declarations10 total
5,605 shares0Common StockSEC:0001093557-26-000117:0
2,632 shares0Common StockSEC:0001093557-25-000148:0
2,632 shares0Common StockSEC:0001093557-24-000113:0
2,906 shares0Common StockSEC:0001093557-24-000093:0
2,906 shares@ US$0.0010.0% of flowCommon StockSEC:0001093557-23-000140:0
910 shares0Common StockSEC:0001093557-22-000115:0
1,500 shares@ US$647.050.0033% mcap50.0% of flowCommon StockSEC:0001093557-21-000266:0
1,500 shares@ US$647.0550.0% of flowCommon StockSEC:0001093557-21-000266
787 shares0Common StockSEC:0001093557-21-000136:0
787 shares0Common StockSEC:0001093557-21-000136
10 of 10 declarations
About Collins Richard Alexander
Richard Alexander Collins is a Board Member at DEXCOM INC. He plays an important role in the company's governance, bringing his expertise in the medical technology field. His experience contributes to the strategic direction of DEXCOM.
