The Filings Report

DexCom insider trading

DXCMfinancial statementsForm 4 filings on EDGAR160 transactions since Nov 1, 2024

From August 4, 2026 to November 1, 2026, 0 insiders at DexCom bought $0 of stock in the open market, and 6 sold $5M. Officers and directors accounted for $0 of purchases and $5M of sales. The last reported transaction was an open-market sale by Stern Sadie on October 27, 2026.

The answer card and chart use the same period. Change the range above the chart to update both. Form 4 filings through October 28, 2026; awards, option exercises, tax withholding and gifts are excluded from these totals.

Stock price and insider activity

Daily price candles with insider purchases and sales directly beneath them on the same timeline. Bars show individual days; totals sum all days in the selected period.

DXCM daily priceSplit-adjusted prices in US dollars

Bought $0Sold $5MAug 4, 2026 – Nov 1, 2026

Oct 30, 2026O $81.52 · H $85.25 · L $79.79 · C $82.29Bought $0 (0)Sold $0 (0)
$76$80$85$89$942026-08-04: open $87.14, high $87.85, low $86.21, close $86.942026-08-05: open $86.47, high $86.47, low $82.30, close $82.662026-08-06: open $82.91, high $83.69, low $82.47, close $83.022026-08-07: open $82.49, high $85.06, low $82.09, close $84.752026-08-10: open $84.81, high $88.18, low $84.53, close $87.652026-08-11: open $87.59, high $89.56, low $87.06, close $89.532026-08-12: open $89.04, high $91.04, low $88.27, close $90.802026-08-13: open $90.82, high $91.62, low $90.15, close $91.482026-08-14: open $91.96, high $91.96, low $89.42, close $89.752026-08-17: open $89.34, high $89.90, low $88.15, close $88.762026-08-18: open $89.49, high $91.50, low $88.98, close $89.602026-08-19: open $90.30, high $91.92, low $89.24, close $89.882026-08-20: open $89.42, high $91.39, low $89.28, close $90.222026-08-21: open $89.61, high $92.56, low $89.20, close $92.342026-08-24: open $92.30, high $92.59, low $91.03, close $91.062026-08-25: open $90.73, high $91.14, low $88.78, close $89.162026-08-26: open $88.17, high $89.76, low $87.51, close $88.962026-08-27: open $88.37, high $90.43, low $87.60, close $89.292026-08-28: open $89.81, high $90.84, low $88.83, close $90.822026-08-31: open $90.00, high $91.18, low $89.09, close $91.062026-09-01: open $90.83, high $92.34, low $89.91, close $90.142026-09-02: open $90.03, high $91.90, low $89.54, close $89.692026-09-03: open $89.73, high $91.00, low $89.05, close $89.712026-09-04: open $88.78, high $89.00, low $87.65, close $87.902026-09-08: open $86.59, high $86.75, low $84.24, close $84.532026-09-09: open $83.93, high $85.16, low $82.80, close $83.882026-09-10: open $83.27, high $84.82, low $82.29, close $84.512026-09-11: open $84.65, high $85.82, low $82.83, close $83.032026-09-14: open $83.92, high $84.98, low $83.76, close $84.682026-09-15: open $84.04, high $87.36, low $83.26, close $86.452026-09-16: open $86.05, high $88.79, low $86.05, close $87.342026-09-17: open $87.54, high $88.26, low $87.17, close $87.932026-09-18: open $87.83, high $89.92, low $87.39, close $89.352026-09-21: open $88.83, high $89.68, low $88.33, close $89.172026-09-22: open $89.12, high $90.39, low $88.18, close $89.532026-09-23: open $89.50, high $90.05, low $87.36, close $87.732026-09-24: open $87.68, high $88.00, low $86.88, close $87.472026-09-25: open $87.38, high $87.64, low $86.36, close $86.622026-09-28: open $86.87, high $87.34, low $85.27, close $86.682026-09-29: open $86.63, high $87.03, low $85.24, close $86.642026-09-30: open $86.21, high $86.75, low $85.26, close $86.292026-10-01: open $86.46, high $87.70, low $85.81, close $86.232026-10-02: open $86.67, high $86.67, low $84.80, close $85.362026-10-05: open $84.75, high $87.12, low $84.75, close $86.902026-10-06: open $86.28, high $86.75, low $82.86, close $83.392026-10-07: open $83.81, high $85.70, low $83.74, close $84.302026-10-08: open $84.01, high $84.54, low $83.08, close $84.412026-10-09: open $84.41, high $85.49, low $82.94, close $84.112026-10-12: open $84.60, high $86.10, low $84.21, close $85.922026-10-13: open $86.19, high $86.60, low $84.49, close $85.062026-10-14: open $85.89, high $86.18, low $83.30, close $83.472026-10-15: open $85.48, high $87.88, low $85.25, close $87.712026-10-16: open $87.93, high $88.87, low $85.80, close $86.042026-10-19: open $86.11, high $86.61, low $85.43, close $85.982026-10-20: open $86.11, high $87.08, low $85.14, close $85.742026-10-21: open $83.75, high $86.17, low $79.92, close $80.262026-10-22: open $79.90, high $80.49, low $77.11, close $78.322026-10-23: open $78.68, high $79.51, low $77.82, close $77.942026-10-26: open $77.25, high $78.58, low $76.52, close $78.572026-10-27: open $78.59, high $79.86, low $78.05, close $78.562026-10-28: open $78.15, high $79.41, low $77.69, close $78.622026-10-29: open $79.08, high $80.01, low $78.59, close $79.932026-10-30: open $81.52, high $85.25, low $79.79, close $82.29Insider purchases / sales · USD$5M$0−$5M2026-08-12: 0 purchases ($0), 1 sales ($89K)2026-08-14: 0 purchases ($0), 1 sales ($156K)2026-08-20: 0 purchases ($0), 3 sales ($2M)2026-08-27: 0 purchases ($0), 1 sales ($227K)2026-09-10: 0 purchases ($0), 1 sales ($303K)2026-09-14: 0 purchases ($0), 1 sales ($130K)2026-09-15: 0 purchases ($0), 2 sales ($692K)2026-09-28: 0 purchases ($0), 1 sales ($221K)2026-10-15: 0 purchases ($0), 1 sales ($145K)2026-10-27: 0 purchases ($0), 1 sales ($202K)Aug 4Aug 26Sep 17Oct 9Oct 30

purchases above zero; sales below. Both use the transaction date and the same dollar scale. Hover, tap, or use arrow keys to inspect a date. Awards, exercises, tax withholding and gifts are excluded.

Dates with prices or insider activity are spaced evenly; empty weekends and holidays are omitted. Prices through Oct 30, 2026. Insider data through Nov 1, 2026. Prices are adjusted for splits; transaction values are reported dollars.

Every transaction

160 transactions from November 1, 2024 to November 1, 2026, newest first. Open-market purchases and sales are coloured; awards, exercises, tax withholding and gifts are grey and not counted.

TradedInsiderRoleTransactionSharesPriceValueHeld afterFiled
Oct 27, 2026Stern SadieEVP Chief People & Culture Offopen-market sale10b5-12,565$78.62$202K120,913Oct 28, 2026
Oct 15, 2026Brown Michael JonEVP Chief Legal Compliance Offopen-market sale10b5-11,700$85.48$145K98,185Oct 19, 2026
Sep 28, 2026Stern SadieEVP Chief People & Culture Offopen-market sale10b5-12,565$86.15$221K123,478Sep 30, 2026
Sep 15, 2026Augustinos NicholasDirectoropen-market sale10b5-1indirect6,539$84.04$550K29,293Sep 16, 2026
Sep 15, 2026Brown Michael JonEVP Chief Legal Compliance Offopen-market sale10b5-11,700$84.04$143K99,885Sep 16, 2026
Sep 14, 2026Augustinos NicholasDirectoropen-market sale10b5-1indirect1,550$84.02$130K35,832Sep 16, 2026
Sep 10, 2026Sylvain Jereme MEVP, Chief Financal Officeropen-market sale10b5-13,638$83.27$303K146,828Sep 14, 2026
Sep 10, 2026Boehnlein Glenn SDirectoraward5,841$0.00—5,841Sep 10, 2026
Aug 27, 2026Stern SadieEVP Chief People & Culture Offopen-market sale10b5-12,565$88.37$227K126,043Aug 28, 2026
Aug 22, 2026Leach Jacob StevenPresident, CEO, and Director, Directortax withholding1,451$92.34$134K418,908Aug 25, 2026
Aug 22, 2026Sylvain Jereme MEVP, Chief Financal Officertax withholding1,451$92.34$134K150,390Aug 25, 2026
Aug 22, 2026Brown Michael JonEVP Chief Legal Compliance Offtax withholding1,451$92.34$134K101,502Aug 25, 2026
Aug 22, 2026Stern SadieEVP Chief People & Culture Offtax withholding1,451$92.34$134K128,608Aug 25, 2026
Aug 20, 2026Sayer Kevin RExecutive Chair, Directoropen-market sale10b5-119,308$89.71$2M309,662Aug 24, 2026
Aug 20, 2026Sayer Kevin RExecutive Chair, Directoropen-market sale10b5-17,351$90.78$667K302,311Aug 24, 2026
Aug 20, 2026Sayer Kevin RExecutive Chair, Directoropen-market sale10b5-197$91.41$9K302,214Aug 24, 2026
Aug 14, 2026Brown Michael JonEVP Chief Legal Compliance Offopen-market sale10b5-11,700$91.93$156K102,953Aug 17, 2026
Aug 12, 2026Augustinos NicholasDirectorgiftindirect1,075$0.00—37,382Aug 13, 2026
Aug 12, 2026Heller Bridgette PDirectoropen-market sale10b5-11,012$88.29$89K29,570Aug 13, 2026
Aug 3, 2026Foletta Mark GDirectoropen-market sale10b5-1indirect2,000$85.32$171K48,852Aug 4, 2026
Jul 31, 2026Foletta Mark GDirectoropen-market sale10b5-1indirect2,000$80.00$160K50,852Aug 4, 2026
Jul 20, 2026Sayer Kevin RExecutive Chair, Directoropen-market sale10b5-126,756$76.32$2M328,970Jul 21, 2026
Jul 15, 2026Brown Michael JonEVP Chief Legal Compliance Offopen-market sale10b5-11,700$74.42$127K104,653Jul 16, 2026
Jul 6, 2026Sayer Kevin RExecutive Chair, Directoropen-market sale10b5-126,756$72.00$2M355,726Jul 7, 2026
Jun 15, 2026Brown Michael JonEVP Chief Legal Compliance Offopen-market sale10b5-11,700$75.55$128K106,353Jun 17, 2026
Jun 15, 2026Foletta Mark GDirectoropen-market sale10b5-1indirect3,801$74.10$282K53,051Jun 17, 2026
Jun 15, 2026Foletta Mark GDirectoropen-market sale10b5-1indirect199$74.82$15K52,852Jun 17, 2026
Jun 4, 2026Coleman JonEVP, Chief Commercial Officeropen-market sale10b5-14,911$74.13$364K95,450Jun 5, 2026
Jun 3, 2026Coleman JonEVP, Chief Commercial Officeropen-market sale10b5-14,912$73.00$359K100,361Jun 5, 2026
May 28, 2026Altman Steven RDirectoraward5,565$0.00—5,565Jun 1, 2026
May 28, 2026Malady KyleDirectoraward5,575$0.00—28,242Jun 1, 2026
May 28, 2026Augustinos NicholasDirectoraward5,575$0.00—5,575Jun 1, 2026
May 28, 2026Foletta Mark GDirectoraward6,331$0.00—6,331Jun 1, 2026
May 28, 2026Heller Bridgette PDirectoraward5,575$0.00—30,582Jun 1, 2026
May 28, 2026Osterloh Albert Frederick IVDirectoraward1,630$0.00—8,691Jun 1, 2026
May 28, 2026Driscoll RimmaDirectoraward5,605$0.00—17,319Jun 1, 2026
May 28, 2026Ashley Euan A.Directoraward5,565$0.00—12,731Jun 1, 2026
May 28, 2026Collins Richard AlexanderDirectoraward5,605$0.00—5,605Jun 1, 2026
May 28, 2026Gala Renee DDirectoraward5,605$0.00—12,486Jun 1, 2026
May 22, 2026Leach Jacob StevenPresident, CEO, and Director, Directortax withholding1,451$71.90$104K420,359May 27, 2026
May 22, 2026Brown Michael JonEVP Chief Legal Compliance Offtax withholding1,451$71.90$104K108,053May 27, 2026
May 22, 2026Sylvain Jereme MEVP, Chief Financal Officertax withholding1,451$71.90$104K151,841May 27, 2026
May 22, 2026Stern SadieEVP Chief People & Culture Offtax withholding1,451$71.90$104K130,059May 27, 2026
May 22, 2026Coleman JonEVP, Chief Commercial Officertax withholding7,362$71.90$529K105,273May 27, 2026
May 21, 2026Sayer Kevin RExecutive Chair, Directoropen-market sale10b5-126,759$72.00$2M382,482May 26, 2026
May 15, 2026Brown Michael JonEVP, Chief Legal Officeropen-market sale10b5-11,700$59.91$102K109,504May 19, 2026
May 12, 2026Heller Bridgette PDirectoropen-market sale10b5-11,012$60.01$61K25,007May 14, 2026
May 8, 2026Augustinos NicholasDirectorgift5,046$0.00—0May 11, 2026
May 8, 2026Augustinos NicholasDirectorgiftindirect5,046$0.00—38,457May 11, 2026
May 8, 2026Collins Richard AlexanderDirectorgift5,074$0.00—0May 11, 2026

Who the insiders are

Everyone who reported a transaction since November 1, 2024, by open-market value over twelve months. Shares held are after the insider’s latest directly held transaction.

InsiderRoleLast transactionKindShares heldBought, 12 monthsSold, 12 monthsSales under a plan
Sayer Kevin RExecutive Chair, DirectorAug 20, 2026open-market sale309,662—$8M (6)6 of 6
Brown Michael JonEVP Chief Legal Compliance OffOct 15, 2026open-market sale98,185—$1M (8)8 of 8
Leach Jacob StevenPresident, CEO, and Director, DirectorAug 22, 2026tax withholding418,908$1M (2)——
Coleman JonEVP, Chief Commercial OfficerJun 4, 2026open-market sale95,450—$723K (2)2 of 2
Augustinos NicholasDirectorSep 15, 2026open-market sale5,575—$680K (2)2 of 2
Stern SadieEVP Chief People & Culture OffOct 27, 2026open-market sale120,913—$649K (3)3 of 3
Foletta Mark GDirectorAug 3, 2026open-market sale6,331—$627K (4)4 of 4
Collins Richard AlexanderDirectorMay 28, 2026award5,605—$389K (2)2 of 2
Sylvain Jereme MEVP, Chief Financal OfficerSep 10, 2026open-market sale146,828—$303K (1)1 of 1
Heller Bridgette PDirectorAug 12, 2026open-market sale29,570—$278K (4)4 of 4
Altman Steven RDirectorMay 28, 2026award5,565———
Gala Renee DDirectorMay 28, 2026award12,486———
Malady KyleDirectorMay 28, 2026award28,242———
Osterloh Albert Frederick IVDirectorMay 28, 2026award8,691———
Driscoll RimmaDirectorMay 28, 2026award17,319———
Ashley Euan A.DirectorMay 28, 2026award12,731———
Dahut Karen MDirectorMay 8, 2025gift0———
Topol EricDirectorMay 8, 2025gift0———
Dolan Matthew VincentEVP, Strategy & Corporate DevJan 29, 2025open-market sale42,044———
Boehnlein Glenn SDirectorSep 10, 2026award5,841———

Questions

Are DexCom insiders buying or selling?

Over the twelve months to November 1, 2026, 9 insiders at DexCom sold $13M of stock in the open market, all by officers and directors, and 1 insider bought $1M, all by officers and directors. Net, insiders sold $12M. Only open-market purchases and sales are counted.

Who sold the most DexCom stock in the last year?

Sayer Kevin R (Executive Chair, Director) sold $8M in 6 open-market sales over the twelve months to November 1, 2026.

Do DexCom executives sell under 10b5-1 plans?

32 of the 32 open-market sales in the last twelve months (100%) were reported as made under a Rule 10b5-1 trading plan, set up in advance. A sale under a plan is still counted as a sale.

What counts as insider buying here?

Only open-market purchases (Form 4 code P) and sales (code S) by officers, directors and 10% owners. Stock awards, option exercises, shares withheld for tax and gifts are listed in the table but never counted as buying or selling.

More on DexCom

From Form 4, 4/A and 5 filings with the SEC. A record of insider transactions, not a recommendation.