DexCom, Inc.

Estimated for Congress, as filed for insiders · by filing month · past 24 months

SS Sadie Stern EVP, Chief HR Officer 10 filings · 0 buys, 10 sales MB Michael Jon Brown EVP, Chief Legal Officer 9 filings · 0 buys, 9 sales KS Kevin R Sayer Executive Chair 6 filings · 0 buys, 6 sales JS Jereme M Sylvain EVP, Chief Financal Officer 6 filings · 0 buys, 6 sales MF Mark G Foletta Director 5 filings · 0 buys, 5 sales JL Jacob Steven Leach President & COO 3 filings · 1 buy, 2 sales RB Rob Bresnahan Representative (Joint) 3 filings · 2 buys, 1 sale RC Richard Alexander Collins Director 2 filings · 0 buys, 2 sales

All 15 filers

JS Jefferson Shreve Representative 2 filings · 1 buy, 2 sales NA Nicholas Augustinos Director 1 filing · 0 buys, 1 sale JC Jon Coleman EVP, Chief Commercial Officer 1 filing · 0 buys, 1 sale MD Matthew Vincent Dolan EVP, Strategy & Corporate Dev 1 filing · 0 buys, 1 sale JB John Boozman Senator (Joint) 1 filing · 1 buy, 0 sales KH Kevin Hern Representative (Joint) 1 filing · 0 buys, 1 sale TS Tina Smith Senator (Spouse) 1 filing · 0 buys, 1 sale

Sadie SternSALE EVP Chief People & Culture Off $202K
2,565 sh × $78.62
Exec Oct 27
Filed Oct 28 · 7:08 PM ET Michael Jon BrownSALE EVP Chief Legal Compliance Off $145K
1,700 sh × $85.48
Exec Oct 15
Filed Oct 19 · 6:42 PM ET Sadie SternSALE EVP Chief People & Culture Off $221K
2,565 sh × $86.15
Exec Sep 28
Filed Sep 30 · 4:15 PM ET Jereme M SylvainSALE EVP, Chief Financal Officer $303K
3,638 sh × $83.27
Exec Sep 10
Filed Sep 14 · 4:02 PM ET Sadie SternSALE EVP Chief People & Culture Off $227K
2,565 sh × $88.37
Exec Aug 27
Filed Aug 28 · 4:57 PM ET Kevin R SayerSALE Executive Chair $2.4M
26,659 sh across 2 lots
Exec Aug 20
Filed Aug 24 · 4:01 PM ET Michael Jon BrownSALE EVP Chief Legal Compliance Off $156K
1,700 sh × $91.93
Exec Aug 14
Filed Aug 17 · 4:08 PM ET Mark G FolettaSALE Director $331K
4,000 sh across 2 lots
Exec Jul 31
Filed Aug 4 · 4:38 PM ET Kevin R SayerSALE Executive Chair $2.0M
26,756 sh × $76.32
Exec Jul 20
Filed Jul 21 · 4:58 PM ET Michael Jon BrownSALE EVP Chief Legal Compliance Off $127K
1,700 sh × $74.42
Exec Jul 15
Filed Jul 16 · 5:06 PM ET Kevin R SayerSALE Executive Chair $1.9M
26,756 sh × $72.00
Exec Jul 6
Filed Jul 7 · 4:09 PM ET Mark G FolettaSALE Director $282K
3,801 sh × $74.10
Exec Jun 15
Filed Jun 17 · 5:30 PM ET Michael Jon BrownSALE EVP Chief Legal Compliance Off $128K
1,700 sh × $75.55
Exec Jun 15
Filed Jun 17 · 5:30 PM ET Jon ColemanSALE EVP, Chief Commercial Officer $723K
9,823 sh across 2 lots
Exec Jun 3
Filed Jun 5 · 5:30 PM ET Kevin R SayerSALE Executive Chair $1.9M
26,759 sh × $72.00
Exec May 21
Filed May 26 · 5:30 PM ET Michael Jon BrownSALE EVP, Chief Legal Officer $102K
1,700 sh × $59.91
Exec May 15
Filed May 19 · 5:30 PM ET Tina SmithSALE Senator (Spouse) $350K
2 lots · $200K–500K bracket
Exec Apr 29
Filed May 10 Michael Jon BrownSALE EVP, Chief Legal Officer $107K
1,700 sh × $63.04
Exec Apr 15
Filed Apr 16 · 5:30 PM ET Michael Jon BrownSALE EVP, Chief Legal Officer $110K
1,700 sh × $64.85
Exec Mar 16
Filed Mar 18 · 5:30 PM ET John BoozmanPURCHASE Senator (Joint) $8K
$1K–15K bracket
Exec Jan 26
Filed Feb 15 Richard Alexander CollinsSALE Director $172K
2,906 sh × $59.05
Exec Nov 14 2025
Filed Nov 17 2025 · 5:30 PM ET Jacob Steven LeachPURCHASE President & COO $1.0M
18,200 sh across 2 lots
Exec Nov 10 2025
Filed Nov 10 2025 · 7:13 PM ET Richard Alexander CollinsSALE Director $218K
3,948 sh × $55.17
Exec Nov 10 2025
Filed Nov 10 2025 · 5:30 PM ET Sadie SternSALE EVP, Chief HR Officer $117K
1,466 sh × $80.00
Exec Sep 4 2025
Filed Sep 8 2025 · 5:30 PM ET Jereme M SylvainSALE EVP, Chief Financal Officer $358K
4,824 sh × $74.17
Exec Sep 2 2025
Filed Sep 4 2025 · 5:30 PM ET