LIVE FROM THE DATABASETRANSACTIONS 362,430COMPANIES 5,763LATEST TRADE Oct 16UPDATED Oct 17, 12:31 AM
DXCMCIK 0001093557

DEXCOM INC

82 transactions by 16 insiders, from October 24, 2025 to September 28, 2026.

Transactions
8216 insiders
Bought · P
$1.0Mopen market
Sold · S
$12.3Mopen market
Net
−$11.3Mnet selling

Officers and directors

People inside the company. What they do with their own shares is the reason this data exists.

InsiderTradesPlannedBoughtSold
Michael Jon BrownGC137/13—$873K
Kevin R. SayerChair106/10—$8.3M
Sadie SternChief82/8—$448K
Jacob Steven LeachCEO8—$1.0M—
Mark G. FolettaDir74/7—$627K
Nicholas AugustinosDir62/6—$680K
Jereme M. SylvainChief6———
Richard Alexander CollinsDir52/5—$389K
Bridgette P. HellerDir54/5—$278K
Jon ColemanChief42/4—$723K
Steven R. AltmanDir3———
Euan A. AshleyDir2———
Albert Frederick Osterloh IVDir2———
Kyle MaladyDir1———
Renee D. GalaDir1———
Rimma DriscollDir1———

All transactions

82 in total, newest filings first.

InsiderDateCodeSharesPriceValue
Sadie SternChiefSep 28SPLAN2,565$86.15$221K
Nicholas AugustinosDirSep 15SPLAN6,539$84.04$550K
Nicholas AugustinosDirSep 14SPLAN1,550$84.02$130K
Michael Jon BrownGCSep 15SPLAN1,700$84.04$143K
Sadie SternChiefAug 27SPLAN2,565$88.37$227K
Jacob Steven LeachCEOAug 22F1,451$92.34$134K
Jereme M. SylvainChiefAug 22F1,451$92.34$134K
Sadie SternChiefAug 22F1,451$92.34$134K
Michael Jon BrownGCAug 22F1,451$92.34$134K
Kevin R. SayerChairAug 20SPLAN97$91.41$9K
Kevin R. SayerChairAug 20SPLAN7,351$90.78$667K
Kevin R. SayerChairAug 20SPLAN19,308$89.71$1.7M
Michael Jon BrownGCAug 14SPLAN1,700$91.93$156K
Bridgette P. HellerDirAug 12SPLAN1,012$88.29$89K
Nicholas AugustinosDirAug 12G1,075$0.00—
Mark G. FolettaDirAug 3SPLAN2,000$85.32$171K
Mark G. FolettaDirJul 31SPLAN2,000$80.00$160K
Kevin R. SayerChairJul 20SPLAN26,756$76.32$2.0M
Michael Jon BrownGCJul 15SPLAN1,700$74.42$127K
Kevin R. SayerChairJul 6SPLAN26,756$72.00$1.9M
Mark G. FolettaDirJun 15SPLAN199$74.82$15K
Mark G. FolettaDirJun 15SPLAN3,801$74.10$282K
Michael Jon BrownGCJun 15SPLAN1,700$75.55$128K
Jon ColemanChiefJun 4SPLAN4,911$74.13$364K
Jon ColemanChiefJun 3SPLAN4,912$73.00$359K
Kyle MaladyDirMay 28A5,575$0.00—
Mark G. FolettaDirMay 28A6,331$0.00—
Bridgette P. HellerDirMay 28A5,575$0.00—
Albert Frederick Osterloh IVDirMay 28A1,630$0.00—
Rimma DriscollDirMay 28A5,605$0.00—
Renee D. GalaDirMay 28A5,605$0.00—
Richard Alexander CollinsDirMay 28A5,605$0.00—
Euan A. AshleyDirMay 28A5,565$0.00—
Nicholas AugustinosDirMay 28A5,575$0.00—
Steven R. AltmanDirMay 28A5,565$0.00—
Jacob Steven LeachCEOMay 22F1,451$71.90$104K
Jereme M. SylvainChiefMay 22F1,451$71.90$104K
Sadie SternChiefMay 22F1,451$71.90$104K
Jon ColemanChiefMay 22F7,362$71.90$529K
Michael Jon BrownGCMay 22F1,451$71.90$104K
Kevin R. SayerChairMay 21SPLAN26,759$72.00$1.9M
Michael Jon BrownGCMay 15SPLAN1,700$59.91$102K
Bridgette P. HellerDirMay 12SPLAN1,012$60.01$61K
Mark G. FolettaDirMay 8G5,731$0.00—
Mark G. FolettaDirMay 8G5,731$0.00—
Richard Alexander CollinsDirMay 8G5,074$0.00—
Richard Alexander CollinsDirMay 8G5,074$0.00—
Nicholas AugustinosDirMay 8G5,046$0.00—
Nicholas AugustinosDirMay 8G5,046$0.00—
Steven R. AltmanDirMay 8G5,037$0.00—
Steven R. AltmanDirMay 8G5,037$0.00—
Michael Jon BrownGCApr 15SPLAN1,700$63.04$107K
Michael Jon BrownGCMar 16SPLAN1,700$64.85$110K
Kevin R. SayerChairMar 8F32,498$68.10$2.2M
Kevin R. SayerChairMar 8A32,749$0.00—
Jereme M. SylvainChiefMar 8F18,950$68.10$1.3M
Jereme M. SylvainChiefMar 8A48,774$0.00—
Sadie SternChiefMar 8F17,199$68.10$1.2M
Sadie SternChiefMar 8A39,019$0.00—
Jacob Steven LeachCEOMar 8F19,757$68.10$1.3M
Jacob Steven LeachCEOMar 8A104,516$0.00—
Jon ColemanChiefMar 8A43,897$0.00—
Michael Jon BrownGCMar 8F23,325$68.10$1.6M
Michael Jon BrownGCMar 8A39,019$0.00—
Albert Frederick Osterloh IVDirFeb 26A7,061$0.00—
Bridgette P. HellerDirFeb 12SPLAN1,012$68.01$69K
Jacob Steven LeachCEOJan 29F3,058$73.36$224K
Jacob Steven LeachCEOJan 29A8,310$0.00—
Sadie SternChiefJan 29F2,656$73.36$195K
Sadie SternChiefJan 29A7,123$0.00—
Jereme M. SylvainChiefJan 29F2,652$73.36$195K
Jereme M. SylvainChiefJan 29A7,123$0.00—
Kevin R. SayerChairJan 29F34,257$73.36$2.5M
Kevin R. SayerChairJan 29A71,218$0.00—
Michael Jon BrownGCJan 29F2,653$73.36$195K
Michael Jon BrownGCJan 29A7,123$0.00—
Richard Alexander CollinsDirNov 14SPLAN2,906$59.05$172K
Bridgette P. HellerDirNov 12SPLAN1,012$58.07$59K
Jacob Steven LeachCOONov 10P2,500$55.43$139K
Jacob Steven LeachCOONov 10P15,700$54.98$863K
Richard Alexander CollinsDirNov 10SPLAN3,948$55.17$218K
Euan A. AshleyDirOct 24A7,166$0.00—