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Company
▲ Purchases (0 ops.)
▼ Sales (20 ops.)
Latest filing published 16 Sept 2026 for DEXCOM INC, €124k. Read the official filing
Filing timeline
BuySaleMichael Jon Brown
Insider track record
Disclosed buys
0
Disclosed sells
20
Not enough buy signals with a settled T+90 horizon to measure a track record yet.
Signal history
Michael Jon Brown: trading record in brief
Michael Jon Brown is a declared insider of Dexcom Inc (senior executive), with filings sourced from SEC (Form 4). The record holds 29 filings, for trades running from 8 March 2022 to 15 September 2026.
Sales make up the whole of the open-market record (20 sales, €4.3M). The amount is not disclosed for 1 filing. The rest of the record consists of 8 share grants. So far in 2026, the count stands at no purchases and 6 sales.
Most recently, on 16 September 2026, the filings show an open-market sale worth €124k in Dexcom Inc. The median gap between a trade and its publication by SEC (Form 4) is 2 days. The legal deadline for a Form 4 is two business days after the transaction. Selling is not necessarily a view on the stock: liquidity needs and diversification are common motives. Source: insider filings from SEC (Form 4). Past trades are no guide to future returns.
Companies and markets linked to Michael Jon Brown
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
Declarations29 total
1,700 shares@ US$84.04Common StockSEC:0001093557-26-000178:0
1,451 shares@ US$92.340.0004% mcap2.3% of flowCommon StockSEC:0001093557-26-000157:0
1,700 shares@ US$91.930.0005% mcap2.8% of flowCommon StockSEC:0001093557-26-000149:0
1,700 shares@ US$74.420.0005% mcap2.4% of flowCommon StockSEC:0001093557-26-000135:0
1,700 sharesCommon StockSEC:0001093557-26-000131:0
1,451 shares@ US$71.900.0003% mcap2.6% of flowCommon StockSEC:0001093557-26-000098:0
1,700 shares@ US$63.040.0004% mcap2.5% of flowCommon StockSEC:0001093557-26-000065:0
1,700 shares@ US$64.852.6% of flowCommon StockSEC:0001093557-26-000052:0
39,019 shares0Common StockSEC:0001093557-26-000048:0
7,123 shares0Common StockSEC:0001093557-26-000010:0
500 shares@ US$80.290.9% of flowCommon StockSEC:0001093557-25-000247:0
500 shares@ US$86.031.0% of flowCommon StockSEC:0001093557-25-000226:0
500 shares@ US$82.801.0% of flowCommon StockSEC:0001093557-25-000217:0
10,000 shares@ US$84.284916.5% of flowCommon StockSEC:0001093557-25-000197:0
13,000 shares@ US$70.380124.0% of flowCommon StockSEC:0001093557-25-000080:0
29,922 shares0Common StockSEC:0001093557-25-000063:0
686 shares@ US$70.001.2% of flowCommon StockSEC:0001093557-24-000150:0
652 shares@ US$69.551.2% of flowCommon StockSEC:0001093557-24-000147:0
659 shares@ US$114.292.0% of flowCommon StockSEC:0001093557-24-000135:0
652 shares@ US$119.242.1% of flowCommon StockSEC:0001093557-24-000123:0
629 shares@ US$126.252.1% of flowCommon StockSEC:0001093557-24-000081:0
2,524 shares@ US$140.01569.4% of flowCommon StockSEC:0001093557-24-000060:0
8,799 shares@ US$134.410731.0% of flowCommon StockSEC:0001093557-24-000048:0
21,711 shares0Common StockSEC:0001093557-24-000034:0
900 shares@ US$113.64312.7% of flowCommon StockSEC:0001093557-23-000238:0
25 of 29 declarations
