DexCom, Inc. (DXCM) Insider Trading

Over the last 3 months, DXCM insiders made 0 open-market buys and 15 sales, a net sale of -$8.3M (SEC Form 4). Over the last 6 months, 778 institutions increased and 686 reduced their position (13F).

Insider Activity

Sentiment
0/100
Buys (3m)
0
Sells (3m)
15
Net (3m)
-$8.3M
Insider trades by month Buys Sells
Mar
Apr
May
Jun
Jul
Aug
Context3-month price +20.5%Institutions accumulating (13F)
DateInsiderTypeSharesPrice
Aug 28, 2026Stern Sadieofficer: EVP Chief People & Culture OffSell2,565$88.37
Aug 25, 2026Leach Jacob Stevendirector, officer: President, CEO, and DirectorTax1,451$92.34
Aug 25, 2026Sylvain Jereme Mofficer: EVP, Chief Financal OfficerTax1,451$92.34
Aug 25, 2026Brown Michael Jonofficer: EVP Chief Legal Compliance OffTax1,451$92.34
Aug 25, 2026Stern Sadieofficer: EVP Chief People & Culture OffTax1,451$92.34
Aug 24, 2026SAYER KEVIN Rdirector, officer: Executive ChairSell19,308$89.71
Aug 24, 2026SAYER KEVIN Rdirector, officer: Executive ChairSell7,351$90.78
Aug 24, 2026SAYER KEVIN Rdirector, officer: Executive ChairSell97$91.41
Aug 17, 2026Brown Michael Jonofficer: EVP Chief Legal Compliance OffSell1,700$91.93
Aug 13, 2026Heller Bridgette PdirectorSell1,012$88.29
Aug 4, 2026FOLETTA MARK GdirectorSell2,000$80.00
Jul 21, 2026SAYER KEVIN Rdirector, officer: Executive ChairSell26,756$76.32
Jul 16, 2026Brown Michael Jonofficer: EVP Chief Legal Compliance OffSell1,700$74.42
Jul 7, 2026SAYER KEVIN Rdirector, officer: Executive ChairSell26,756$72.00
Jun 17, 2026Brown Michael Jonofficer: EVP Chief Legal Compliance OffSell1,700$75.55
Jun 17, 2026FOLETTA MARK GdirectorSell3,801$74.10
Jun 17, 2026FOLETTA MARK GdirectorSell199$74.82
Jun 5, 2026Coleman Jonofficer: EVP, Chief Commercial OfficerSell4,912$73.00
Jun 5, 2026Coleman Jonofficer: EVP, Chief Commercial OfficerSell4,911$74.13
Jun 1, 2026Ashley Euan A.directorGrant5,565
Jun 1, 2026AUGUSTINOS NICHOLASdirectorGrant5,575
Jun 1, 2026Collins Richard AlexanderdirectorGrant5,605
Jun 1, 2026Malady KyledirectorGrant5,575
Jun 1, 2026Osterloh Albert Frederick IVdirectorGrant1,630
Jun 1, 2026GALA RENEE DdirectorGrant5,605
Jun 1, 2026Heller Bridgette PdirectorGrant5,575
Jun 1, 2026Driscoll RimmadirectorGrant5,605
Jun 1, 2026ALTMAN STEVEN RdirectorGrant5,565
Jun 1, 2026FOLETTA MARK GdirectorGrant6,331
May 27, 2026Leach Jacob Stevendirector, officer: President, CEO, and DirectorTax1,451$71.90

Source: DXCM SEC Form 4 filings, latest Aug 28, 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
778
New positions
272
Reduced
686
Sold out
105
Largest moves
InstitutionActionSharesFiled
BLACKROCK, INC.Reduced39.0MMay 13, 2026
BlackRock, Inc.Reduced38.2MAug 7, 2026
VANGUARD CAPITAL MANAGEMENT LLCIncreased25.2MAug 13, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position25.0MMay 15, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCIncreased19.7MAug 13, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCNew Position19.2MMay 8, 2026
STATE STREET CORPIncreased18.4MAug 7, 2026
STATE STREET CORPReduced17.9MMay 15, 2026
BAILLIE GIFFORD & COIncreased15.6MMay 8, 2026
Invesco Ltd.Increased15.3MAug 14, 2026
BAILLIE GIFFORD & COReduced14.8MAug 6, 2026
ALLIANCEBERNSTEIN L.P.Increased12.9MMay 15, 2026
GEODE CAPITAL MANAGEMENT, LLCIncreased12.4MAug 12, 2026
GEODE CAPITAL MANAGEMENT, LLCIncreased12.3MMay 15, 2026
ALLIANCEBERNSTEIN L.P.Reduced11.7MAug 14, 2026

Source: SEC Form 13F filings. For informational purposes only — not investment advice.