InsidersTradesSigma
Total declarations
Company
▲ Purchases (0 ops.)
▼ Sales (6 ops.)
Insider track record
Board DirectorDisclosed buys
0
Disclosed sells
6
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
Browse the detailed record of transactions filed by ALTMAN STEVEN R, Director. Insider active across 1 company, notably DEXCOM INC. Cumulatively, 15 reports have been recorded. Split: 0 buy · 6 sells. Total volume traded: €871k. Activity tracked since 20 May 2021. The latest transaction was filed on 28 May 2026 (Attribution). Regulator: SEC (Form 4). All data is openly available.
Declarations15 total
5,565 shares0Common StockSEC:0001093557-26-000125:0
2,613 shares0Common StockSEC:0001093557-25-000147:0
2,613 shares0Common StockSEC:0001093557-24-000111:0
2,885 shares0Common StockSEC:0001093557-24-000091:0
2,885 shares0Common StockSEC:0001093557-24-000091:1
460 shares@ US$121.96615.9% of flowCommon StockSEC:0001093557-24-000010:0
2,000 shares@ US$122.774225.6% of flowCommon StockSEC:0001093557-23-000245:0
3,000 shares@ US$120.001438.4% of flowCommon StockSEC:0001093557-23-000242:0
1,000 shares@ US$101.25610.7% of flowCommon StockSEC:0001093557-23-000226:0
1,000 shares@ US$77.588.4% of flowCommon StockSEC:0001093557-23-000207:0
1,000 shares@ US$101.49536.4% of flowCommon StockSEC:0001093557-23-000203:0
2,885 shares@ US$0.0010.0% of flowCommon StockSEC:0001093557-23-000142:0
910 shares0Common StockSEC:0001093557-22-000113:0
806 shares0Common StockSEC:0001093557-21-000134
806 shares0Common StockSEC:0001093557-21-000134:0
15 of 15 declarations
About ALTMAN STEVEN R
Steven R. Altman is a Board Member at Dexcom Inc. In this role, he contributes to overseeing the company's activities and making strategic decisions. Altman brings his expertise in medical technology and innovation, which is essential for guiding the organization's direction. His commitment to improving healthcare is an asset to the board.
