DexCom Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

BIT:1DXCM Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
15 Aug 25	Sell€13,579	Mark Foletta	Individual	195	€69.64
15 Jul 25	Sell€593	Mark Foletta	Individual	8	€74.09
12 Mar 25	Sell€2,095,087	Kevin Sayer	Individual	32,498	€64.47
12 Mar 25	Sell€720,496	Sadie Stern	Individual	11,176	€64.47
12 Mar 25	Sell€773,683	Jereme Sylvain	Individual	12,001	€64.47
12 Mar 25	Sell€838,086	Michael Brown	Individual	13,000	€64.47
12 Mar 25	Sell€907,454	Jacob Leach	Individual	14,076	€64.47
10 Mar 25	Sell€476,879	Jereme Sylvain	Individual	7,000	€68.93
29 Jan 25	Sell€2,783,393	Kevin Sayer	Individual	33,359	€83.44
29 Jan 25	Sell€174,635	Sadie Stern	Individual	2,093	€83.44
29 Jan 25	Sell€98,707	Matthew Dolan	Individual	1,183	€83.44
29 Jan 25	Sell€174,384	Jereme Sylvain	Individual	2,090	€83.44
28 Jan 25	Sell€219,523	Jacob Leach	Individual	2,634	€83.34
16 Dec 24	Sell€54,446	Jacob Leach	Individual	744	€73.18
16 Dec 24	Sell€54,446	Jereme Sylvain	Individual	744	€73.18
16 Dec 24	Sell€31,028	Sadie Stern	Individual	424	€73.18
20 Nov 24	Sell€302,680	Sadie Stern	Individual	4,259	€71.07

Insider Trading Volume

Insider Buying: 1DXCM insiders have only sold shares in the past 3 months.

Ownership Breakdown

What is the ownership structure of 1DXCM?
Owner Type	Number of Shares	Ownership Percentage
State or Government	366,104	0.0939%
Public Companies	1,036,937	0.266%
Individual Insiders	1,230,816	0.316%
General Public	20,803,116	5.33%
Institutions	366,579,299	94%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 59.74% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
12.7%	The Vanguard Group, Inc.	49,455,578	€2.4b	2.35%	0.03%
10%	BlackRock, Inc.	39,016,563	€1.9b	-0.57%	0.03%
4.32%	State Street Global Advisors, Inc.	16,858,078	€801.7m	1.05%	0.03%
4.07%	Baillie Gifford & Co.	15,882,168	€755.3m	-4.93%	0.41%
2.84%	UBS Asset Management AG	11,063,305	€526.2m	-8.7%	0.05%
2.76%	Geode Capital Management, LLC	10,766,356	€512.0m	3.45%	0.04%
2.59%	Jennison Associates LLC	10,090,374	€479.9m	-12.4%	0.32%
2.55%	Sands Capital Management, LLC	9,947,944	€473.1m	-4.48%	1.43%
1.87%	Teachers Insurance and Annuity Association-College Retirement Equities Fund	7,296,957	€347.0m	-7.17%	0.08%
1.74%	Capital Research and Management Company	6,793,543	€323.1m	-55%	0.02%
1.44%	Massachusetts Financial Services Company	5,608,475	€266.7m	-15.1%	0.07%
1.33%	Norges Bank Investment Management	5,192,796	€247.0m	4.79%	0.02%
1.12%	Amundi Asset Management SAS	4,363,578	€207.5m	-20.8%	0.05%
1.09%	JP Morgan Asset Management	4,233,603	€201.3m	48.7%	0.02%
1%	American Century Investment Management Inc	3,889,237	€185.0m	-4.03%	0.09%
0.98%	Northern Trust Global Investments	3,835,420	€182.4m	-1.33%	0.03%
0.98%	Marshall Wace LLP	3,822,085	€181.8m	261%	0.28%
0.94%	Invesco Capital Management LLC	3,650,208	€173.6m	-5.06%	0.06%
0.87%	Federated Hermes, Inc.	3,390,540	€161.2m	-6.1%	0.37%
0.87%	Raymond James Financial, Inc.	3,379,116	€160.7m	0.72%	0.06%
0.86%	Morgan Stanley	3,372,362	€160.4m	-3.93%	0.02%
0.79%	Charles Schwab Investment Management, Inc.	3,073,266	€146.2m	0%	0.02%
0.75%	BNY Asset Management	2,918,031	€138.8m	-23.6%	0.03%
0.65%	Janus Henderson Group plc	2,548,046	€121.2m	0.59%	0.05%
0.65%	DSM Capital Partners LLC	2,533,539	€120.5m	76.5%	2.14%

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2025/11/10 05:47
End of Day Share Price	2025/11/07 00:00
Earnings	2025/09/30
Annual Earnings	2024/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

DexCom, Inc. is covered by 53 analysts. 26 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
Jeffrey Johnson	Baird
Travis Steed	Barclays
Matthew Miksic	Barclays