Dexcom (NASDAQ: DXCM) insider transactions

In the twelve months to 10 November 2026, executives and directors of Dexcom reported 31 open-market sales of 164,826 shares ($12.8m) and 0 open-market purchases, by 9 people, according to the Form 4 filings they submitted to the SEC.

Latest transactions

The 20 most recent transactions in Dexcom shares reported on Form 4
Date	Insider	Role	Transaction	Shares	Price	Held after	Filing
8 November 2026	Sylvain Jereme M	EVP, COO & CFO	Shares withheld for tax	−1,451	$79.41	145,377	Form 4
8 November 2026	Stern Sadie	EVP Chief People & Culture Off	Shares withheld for tax	−1,451	$79.41	119,462	Form 4
8 November 2026	Leach Jacob Steven	President, CEO, and Director	Shares withheld for tax	−1,451	$79.41	417,457	Form 4
8 November 2026	Brown Michael Jon	EVP Chief Legal Compliance Off	Shares withheld for tax	−1,451	$79.41	96,734	Form 4
30 October 2026	Ashley Euan A.	Director	Gift	−2,389	—	10,342	Form 4
27 October 2026	Stern Sadie	EVP Chief People & Culture Off	Open-market sale, 10b5-1 plan	−2,565	$78.62	120,913	Form 4
15 October 2026	Brown Michael Jon	EVP Chief Legal Compliance Off	Open-market sale, 10b5-1 plan	−1,700	$85.48	98,185	Form 4
28 September 2026	Stern Sadie	EVP Chief People & Culture Off	Open-market sale, 10b5-1 plan	−2,565	$86.15	123,478	Form 4
15 September 2026	Brown Michael Jon	EVP Chief Legal Compliance Off	Open-market sale, 10b5-1 plan	−1,700	$84.04	99,885	Form 4
15 September 2026	Augustinos Nicholas	Director	Open-market sale, 10b5-1 plan	−6,539	$84.04	29,293	Form 4
14 September 2026	Augustinos Nicholas	Director	Open-market sale, 10b5-1 plan	−1,550	$84.02	35,832	Form 4
10 September 2026	Sylvain Jereme M	EVP, Chief Financal Officer	Open-market sale, 10b5-1 plan	−3,638	$83.27	146,828	Form 4
10 September 2026	Boehnlein Glenn S	Director	Grant or award	+5,841	—	5,841	Form 4
27 August 2026	Stern Sadie	EVP Chief People & Culture Off	Open-market sale, 10b5-1 plan	−2,565	$88.37	126,043	Form 4
22 August 2026	Stern Sadie	EVP Chief People & Culture Off	Shares withheld for tax	−1,451	$92.34	128,608	Form 4
22 August 2026	Brown Michael Jon	EVP Chief Legal Compliance Off	Shares withheld for tax	−1,451	$92.34	101,502	Form 4
22 August 2026	Sylvain Jereme M	EVP, Chief Financal Officer	Shares withheld for tax	−1,451	$92.34	150,390	Form 4
22 August 2026	Leach Jacob Steven	President, CEO, and Director	Shares withheld for tax	−1,451	$92.34	418,908	Form 4
20 August 2026	Sayer Kevin R	Executive Chair	Open-market sale, 10b5-1 plan	−19,308	$89.71	309,662	Form 4
20 August 2026	Sayer Kevin R	Executive Chair	Open-market sale, 10b5-1 plan	−7,351	$90.78	302,311	Form 4

Names appear as in the filing, surname first. A dash in the price column means the filing reports none, as in grants and gifts.

How to read the table

Only open-market purchases and sales are trades the insider chose to make at the market price, and they are the ones counted in the summary above. Grants, option exercises and shares withheld for tax come from pay plans. A sale marked as a 10b5-1 plan was scheduled in advance under a written plan.

Where each row comes from

From the Form 4 that each executive, director or large shareholder must file with the SEC within two business days of a transaction, read up to 10 November 2026. Each row links to its filing on EDGAR. Only transactions in shares are listed, not derivatives, and amended filings are left out. The accounts of the company are on the Dexcom page; the method, in data sources.

Information prepared from the Form 4 filings submitted to the SEC, for information purposes only. It is not financial advice or a recommendation to buy or sell. Updated on 12 November 2026.