DexCom, Inc. (DXCM) Insider Trading
Over the last 3 months, DXCM insiders made 0 open-market buys and 9 sales, a net sale of -$3.3M (SEC Form 4). Over the last 6 months, 766 institutions increased and 653 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
9
Net (3m)
-$3.3M
Insider trades by month Buys Sells
Nov
Feb
Mar
Apr
May
Jun
Context3-month price +7.2%Institutions mixed (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Jun 17, 2026 | FOLETTA MARK Gdirector | Sell | 3,801 | $74.10 |
| Jun 17, 2026 | Brown Michael Jonofficer: EVP Chief Legal Compliance Off | Sell | 1,700 | $75.55 |
| Jun 17, 2026 | FOLETTA MARK Gdirector | Sell | 199 | $74.82 |
| Jun 5, 2026 | Coleman Jonofficer: EVP, Chief Commercial Officer | Sell | 4,911 | $74.13 |
| Jun 5, 2026 | Coleman Jonofficer: EVP, Chief Commercial Officer | Sell | 4,912 | $73.00 |
| Jun 1, 2026 | Osterloh Albert Frederick IVdirector | Grant | 1,630 | — |
| Jun 1, 2026 | Ashley Euan A.director | Grant | 5,565 | — |
| Jun 1, 2026 | GALA RENEE Ddirector | Grant | 5,605 | — |
| Jun 1, 2026 | FOLETTA MARK Gdirector | Grant | 6,331 | — |
| Jun 1, 2026 | AUGUSTINOS NICHOLASdirector | Grant | 5,575 | — |
| Jun 1, 2026 | Heller Bridgette Pdirector | Grant | 5,575 | — |
| Jun 1, 2026 | Collins Richard Alexanderdirector | Grant | 5,605 | — |
| Jun 1, 2026 | Driscoll Rimmadirector | Grant | 5,605 | — |
| Jun 1, 2026 | Malady Kyledirector | Grant | 5,575 | — |
| Jun 1, 2026 | ALTMAN STEVEN Rdirector | Grant | 5,565 | — |
| May 27, 2026 | Brown Michael Jonofficer: EVP Chief Legal Compliance Off | Tax | 1,451 | $71.90 |
| May 27, 2026 | Leach Jacob Stevendirector, officer: President, CEO, and Director | Tax | 1,451 | $71.90 |
| May 27, 2026 | Sylvain Jereme Mofficer: EVP, Chief Financal Officer | Tax | 1,451 | $71.90 |
| May 27, 2026 | Coleman Jonofficer: EVP, Chief Commercial Officer | Tax | 7,362 | $71.90 |
| May 27, 2026 | Stern Sadieofficer: EVP Chief People & Culture Off | Tax | 1,451 | $71.90 |
| May 26, 2026 | SAYER KEVIN Rdirector, officer: Executive Chair | Sell | 26,759 | $72.00 |
| May 19, 2026 | Brown Michael Jonofficer: EVP, Chief Legal Officer | Sell | 1,700 | $59.91 |
| May 14, 2026 | Heller Bridgette Pdirector | Sell | 1,012 | $60.01 |
| Apr 16, 2026 | Brown Michael Jonofficer: EVP, Chief Legal Officer | Sell | 1,700 | $63.04 |
| Mar 18, 2026 | Brown Michael Jonofficer: EVP, Chief Legal Officer | Sell | 1,700 | $64.85 |
| Mar 10, 2026 | Sylvain Jereme Mofficer: EVP, Chief Financal Officer | Grant | 48,774 | — |
| Mar 10, 2026 | Brown Michael Jonofficer: EVP, Chief Legal Officer | Tax | 23,325 | $68.10 |
| Mar 10, 2026 | SAYER KEVIN Rdirector, officer: Executive Chair | Tax | 32,498 | $68.10 |
| Mar 10, 2026 | Sylvain Jereme Mofficer: EVP, Chief Financal Officer | Tax | 18,950 | $68.10 |
| Mar 10, 2026 | SAYER KEVIN Rdirector, officer: Executive Chair | Grant | 32,749 | — |
Source: DXCM SEC Form 4 filings, latest Jun 17, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their DXCM positions over the last 6 months (SEC Form 13F).
Increased
766
New positions
288
Reduced
653
Sold out
229
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 50.0M | May 15, 2026 |
| VANGUARD GROUP INC | Reduced | 49.1M | Jan 29, 2026 |
| BLACKROCK, INC. | Increased | 39.8M | Feb 12, 2026 |
| BLACKROCK, INC. | Reduced | 39.0M | May 13, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 19.2M | May 8, 2026 |
| STATE STREET CORP | Increased | 18.1M | Feb 13, 2026 |
| STATE STREET CORP | Reduced | 17.9M | May 15, 2026 |
| BAILLIE GIFFORD & CO | Increased | 15.6M | May 8, 2026 |
| BAILLIE GIFFORD & CO | Reduced | 15.6M | Jan 23, 2026 |
| ALLIANCEBERNSTEIN L.P. | Increased | 12.9M | May 15, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 12.3M | May 15, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 11.0M | Feb 9, 2026 |
| UBS ASSET MANAGEMENT AMERICAS INC | Increased | 9.7M | May 13, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | Increased | 9.3M | May 15, 2026 |
| ALLIANCEBERNSTEIN L.P. | Increased | 8.6M | Feb 17, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.