Quick Takeaways
- DXCM - DEXCOM INC has 33 insiders with reported activity on this page.
- Net insider value flow over the last year: -$3,214,239.
- Recent transaction rows are available for direct filing-level review.
- Info
- Insider Trading
- Financials
- Holders
Insider Transactions Reported by 33 Insiders of DEXCOM INC
- Symbol
- DXCM on Nasdaq
- Location
- San Diego, CA
What Changed
- Buy value: $1,001,702; sell value: $4,215,941.
- Net share flow: -36,191.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Source Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsNet insider flow leans to selling over the last 12 months. Net value: -$3,214,239.
Buys
$1,001,702
Shares: 18,200
Insiders: 1
Sells
$4,215,941
Shares: 54,391
Insiders: 8
Net
-$3,214,239
Shares: -36,191
Insiders: -7
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 4,412 | $0 | $286,239 | -$286,239 |
| 3-6 | 18,200 | 7,866 | $1,001,702 | $448,177 | +$553,525 |
| 6-9 | 0 | 11,673 | $0 | $922,517 | -$922,517 |
| 9-12 | 0 | 30,440 | $0 | $2,559,008 | -$2,559,008 |
DEXCOM INC executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Jacob Steven Leach | President, CEO, and Director, Director | $32,823,346 | +$1,001,702 | +3.1% | Mixed | 08 Mar 2026 |
| Kevin R. Sayer | Executive Chair, Director | $28,634,592 | Mixed | 08 Mar 2026 | ||
| Donald Abbey | EVP Global Business Services I | $25,718,882 | Mixed | 10 Mar 2023 | ||
| Eric Topol | Director | $25,169,246 | Mixed | 08 May 2025 | ||
| Steven R. Pacelli | EVP Managing Director Dexcom V | $15,426,532 | Mixed | 24 Nov 2023 | ||
| Jay S. Skyler | Director | $12,777,409 | Mixed | 18 May 2023 | ||
| Jereme M. Sylvain | EVP, Chief Financal Officer | $10,725,841 | -$357,796 | -3.2% | Mixed | 08 Mar 2026 |
| Andrew K. Balo | EVP Regulatory Strategy Clinic | $10,029,255 | Mixed | 10 Mar 2023 | ||
| Sadie Stern | EVP, Chief HR Officer | $9,201,754 | -$898,756 | -8.9% | Mixed | 08 Mar 2026 |
| Teri L. Lawver | EVP Chief Commercial Officer | $8,957,263 | Filing P/S | 12 Mar 2024 | ||
| Jon Coleman | EVP, Chief Commercial Officer | $7,881,070 | Mixed | 08 Mar 2026 | ||
| Barry J. Regan | EVP Operations | $7,228,803 | Mixed | 18 Dec 2023 | ||
| Michael Jon Brown | EVP, Chief Legal Officer | $7,010,300 | -$1,184,822 | -14% | Filing P/S | 15 Apr 2026 |
| Paul R. Flynn | EVP Global Revenue | $6,051,800 | Mixed | 18 Dec 2023 | ||
| Shelly R. Selvaraj | SVP Chief Information Officer | $5,990,477 | Mixed | 11 Sep 2023 | ||
| Girish Naganathan | EVP Chief Technology Officer | $5,900,471 | Mixed | 09 Nov 2023 | ||
| Mark G. Foletta | Director | $4,678,407 | -$685,724 | -13% | Mixed | 15 Aug 2025 |
| Steven R. Altman | Director | $4,210,935 | Mixed | 08 May 2025 | ||
| Matthew Vincent Dolan | EVP, Strategy & Corporate Dev | $3,654,229 | Filing P/S | 28 Jan 2025 | ||
| Nicholas Augustinos | Director | $3,194,633 | -$517,906 | -14% | Mixed | 13 Jun 2025 |
| Barbara Kahn | Director | $2,857,544 | Mixed | 18 May 2024 | ||
| Richard Alexander Collins | Director | $2,430,322 | -$389,410 | -14% | Mixed | 14 Nov 2025 |
| Quentin S. Blackford | Chief Operating Officer | $2,383,679 | Mixed | 08 Sep 2021 | ||
| Patrick Michael Murphy | EVP, Chief Legal Officer | $2,009,560 | Mixed | 09 Sep 2021 | ||
| Kyle Malady | Director | $1,832,853 | -$53,934 | -2.9% | Filing P/S | 05 Sep 2025 |
| Bridgette P. Heller | Director | $1,769,552 | -$127,593 | -6.7% | Filing P/S | 12 Feb 2026 |
| Sumi Shrishrimal | SVP Chief Risk Officer | $1,704,800 | Mixed | 08 Mar 2022 | ||
| Chad Patterson | EVP Global Marketing | $1,690,706 | Mixed | 09 May 2022 | ||
| Karen M. Dahut | Director | $1,175,903 | Mixed | 08 May 2025 | ||
| Rimma Driscoll | Director | $774,763 | Mixed | 08 May 2025 | ||
| Renee D. Gala | Director | $600,644 | Mixed | 08 May 2025 | ||
| Albert Frederick Osterloh IV | Director | $514,464 | Mixed | 26 Feb 2026 | ||
| Euan A. Ashley | Director | $482,200 | Mixed | 24 Oct 2025 |
Top shareholders of DEXCOM INC (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| VANGUARD GROUP INC |
13F
|
Company |
13%
|
49,074,378
|
$3,257,066,468 | — | 31 Dec 2025 | |
| BlackRock, Inc. |
13F
13D/G
|
Company |
8.3%
from 13D/G
|
39,848,377
|
$2,644,736,811 | — | 31 Dec 2025 | |
| J. Stern & Co. LLP |
13F
|
Company |
0.41%
|
1,601,973
|
$1,601,973,000 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
|
Company |
4.6%
|
18,093,554
|
$1,200,869,179 | — | 31 Dec 2025 | |
| BAILLIE GIFFORD & CO |
13F
|
Company |
4%
|
15,552,587
|
$1,032,225,198 | — | 31 Dec 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
2.8%
|
11,006,183
|
$727,841,809 | — | 31 Dec 2025 | |
| ALLIANCEBERNSTEIN L.P. |
13F
|
Company |
2.2%
|
8,624,132
|
$572,383,641 | — | 31 Dec 2025 | |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC |
13F
|
Company |
2%
|
7,999,057
|
$530,897,413 | — | 31 Dec 2025 | |
| NORGES BANK |
13F
|
Company |
1.9%
|
7,282,743
|
$483,355,653 | — | 31 Dec 2025 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
1.6%
|
6,216,401
|
$412,582,596 | — | 31 Dec 2025 | |
| JENNISON ASSOCIATES LLC |
13F
|
Company |
1.5%
|
5,789,944
|
$384,278,588 | — | 31 Dec 2025 | |
| Invesco Ltd. |
13F
|
Company |
1.4%
|
5,315,367
|
$352,780,915 | — | 31 Dec 2025 | |
| MORGAN STANLEY |
13F
|
Company |
1.3%
|
5,072,646
|
$336,671,733 | — | 31 Dec 2025 | |
| Amundi |
13F
|
Individual |
1.3%
|
4,917,921
|
$326,402,417 | — | 31 Dec 2025 | |
| Nuveen, LLC |
13F
|
Company |
1.2%
|
4,632,271
|
$307,443,825 | — | 31 Dec 2025 | |
| DEUTSCHE BANK AG\ |
13F
|
Company |
1.1%
|
4,329,213
|
$287,329,869 | — | 31 Dec 2025 | |
| D. E. Shaw & Co., Inc. |
13F
|
Company |
1%
|
3,938,568
|
$261,402,758 | — | 31 Dec 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.97%
|
3,813,212
|
$253,082,872 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.86%
|
3,376,421
|
$224,093,062 | — | 31 Dec 2025 | |
| CIBC Private Wealth Group LLC |
13F
|
Company |
0.8%
|
3,128,114
|
$207,612,942 | — | 31 Dec 2025 | |
| AQR CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.79%
|
3,102,789
|
$205,932,104 | — | 31 Dec 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
0.79%
|
3,079,311
|
$204,373,871 | — | 31 Dec 2025 | |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
|
Company |
0.78%
|
3,073,575
|
$203,993,172 | — | 31 Dec 2025 | |
| FRANKLIN RESOURCES INC |
13F
|
Company |
0.68%
|
2,682,761
|
$178,054,847 | — | 31 Dec 2025 | |
| Legal & General Group Plc |
13F
|
Company |
0.66%
|
2,605,282
|
$172,912,568 | — | 31 Dec 2025 | |
| ROYAL BANK OF CANADA |
13F
|
Company |
0.65%
|
2,539,748
|
$168,563,000 | — | 31 Dec 2025 | |
| Squarepoint Ops LLC |
13F
|
Company |
0.64%
|
2,527,448
|
$167,746,724 | — | 31 Dec 2025 | |
| RAYMOND JAMES FINANCIAL INC |
13F
|
Company |
0.63%
|
2,452,212
|
$163,184,645 | — | 31 Dec 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
0.62%
|
2,437,847
|
$161,799,933 | — | 31 Dec 2025 | |
| DSM CAPITAL PARTNERS LLC |
13F
|
Company |
0.6%
|
2,355,093
|
$156,307,522 | — | 31 Dec 2025 | |
| Neuberger Berman Group LLC |
13F
|
Company |
0.6%
|
2,340,199
|
$155,318,981 | — | 31 Dec 2025 | |
| Castle Hook Partners LP |
13F
|
Company |
0.57%
|
2,251,011
|
$149,399,600 | — | 31 Dec 2025 | |
| AMERICAN CENTURY COMPANIES INC |
13F
|
Company |
0.57%
|
2,235,258
|
$148,354,074 | — | 31 Dec 2025 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.56%
|
2,196,842
|
$145,804,407 | — | 31 Dec 2025 | |
| Employees Provident Fund Board |
13F
|
Company |
0.56%
|
2,190,029
|
$145,352,225 | — | 31 Dec 2025 | |
| AMERIPRISE FINANCIAL INC |
13F
|
Company |
0.54%
|
2,128,251
|
$141,252,702 | — | 31 Dec 2025 | |
| JANUS HENDERSON GROUP PLC |
13F
|
Company |
0.51%
|
1,999,005
|
$132,674,222 | — | 31 Dec 2025 | |
| BLAIR WILLIAM & CO/IL |
13F
|
Company |
0.51%
|
1,988,841
|
$131,999,403 | — | 31 Dec 2025 | |
| UBS Group AG |
13F
|
Company |
0.49%
|
1,923,780
|
$127,681,280 | — | 31 Dec 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
0.48%
|
1,871,705
|
$124,244,665 | — | 31 Dec 2025 | |
| BNP Paribas Asset Management Holding S.A. |
13F
|
Company |
0.48%
|
1,863,891
|
$123,712,000 | — | 31 Dec 2025 | |
| LOS ANGELES CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.46%
|
1,811,734
|
$123,560,258 | — | 31 Dec 2025 | |
| BNP PARIBAS FINANCIAL MARKETS |
13F
|
Company |
0.47%
|
1,838,608
|
$122,028,413 | — | 31 Dec 2025 | |
| Deutsche Girozentrale DekaBank |
13F
|
Individual |
0.22%
|
850,305
|
$117,801,000 | — | 31 Dec 2025 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
0.41%
|
1,589,877
|
$105,520,136 | — | 31 Dec 2025 | |
| ADAGE CAPITAL PARTNERS GP, L.L.C. |
13F
|
Company |
0.4%
|
1,587,550
|
$105,365,694 | — | 31 Dec 2025 | |
| PRICE T ROWE ASSOCIATES INC /MD/ |
13F
|
Company |
0.37%
|
1,468,908
|
$97,493,000 | — | 31 Dec 2025 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
0.37%
|
1,444,796
|
$95,891,111 | — | 31 Dec 2025 | |
| WESTFIELD CAPITAL MANAGEMENT CO LP |
13F
|
Company |
0.37%
|
1,439,689
|
$95,552,169 | — | 31 Dec 2025 | |
| Capital World Investors |
13F
|
Company |
0.35%
|
1,384,000
|
$91,856,080 | — | 31 Dec 2025 |
Recent Insider Transactions by Companies or Individuals for DEXCOM INC
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Michael Jon Brown | DXCM | Common Stock | Sale | -1.51% | $107,168 | $63.04 | -1,700 | 111,204 | 15 Apr 2026 | Direct |
| Michael Jon Brown | DXCM | Common Stock | Sale | -1.48% | $110,245 | $64.85 | -1,700 | 112,904 | 16 Mar 2026 | Direct |
| Kevin R. Sayer | DXCM | Common Stock | Tax liability | -7.36% | -32,498 | 409,241 | 08 Mar 2026 | Direct | ||
| Kevin R. Sayer | DXCM | Common Stock | Award | 8.01% | 32,749 | 441,739 | 08 Mar 2026 | Direct | ||
| Jereme M. Sylvain | DXCM | Common Stock | Tax liability | -11% | -18,950 | 153,292 | 08 Mar 2026 | Direct | ||
| Jereme M. Sylvain | DXCM | Common Stock | Award | 39.5% | 48,774 | 172,242 | 08 Mar 2026 | Direct | ||
| Michael Jon Brown | DXCM | Common Stock | Tax liability | -16.9% | -23,325 | 114,604 | 08 Mar 2026 | Direct | ||
| Michael Jon Brown | DXCM | Common Stock | Award | 39.4% | 39,019 | 137,929 | 08 Mar 2026 | Direct | ||
| Sadie Stern | DXCM | Common Stock | Tax liability | -11.6% | -17,199 | 131,510 | 08 Mar 2026 | Direct | ||
| Sadie Stern | DXCM | Common Stock | Award | 35.6% | 39,019 | 148,709 | 08 Mar 2026 | Direct | ||
| Jacob Steven Leach | DXCM | Common Stock | Tax liability | -4.47% | -19,757 | 421,810 | 08 Mar 2026 | Direct | ||
| Jacob Steven Leach | DXCM | Common Stock | Award | 31% | 104,516 | 441,567 | 08 Mar 2026 | Direct | ||
| Jon Coleman | DXCM | Common Stock | Award | 63.9% | 43,897 | 112,635 | 08 Mar 2026 | Direct | ||
| Albert Frederick Osterloh IV | DXCM | Common Stock | Award | 7,061 | 7,061 | 26 Feb 2026 | Direct | |||
| Bridgette P. Heller | DXCM | Common Stock | Sale | -3.74% | $68,826 | $68.01 | -1,012 | 26,019 | 12 Feb 2026 | Direct |
| Jacob Steven Leach | DXCM | Common Stock | Tax liability | -0.9% | -3,058 | 337,051 | 29 Jan 2026 | Direct | ||
| Jacob Steven Leach | DXCM | Common Stock | Award | 2.5% | 8,310 | 340,109 | 29 Jan 2026 | Direct | ||
| Sadie Stern | DXCM | Common Stock | Tax liability | -2.36% | -2,656 | 109,690 | 29 Jan 2026 | Direct | ||
| Sadie Stern | DXCM | Common Stock | Award | 6.77% | 7,123 | 112,346 | 29 Jan 2026 | Direct | ||
| Jereme M. Sylvain | DXCM | Common Stock | Tax liability | -2.11% | -2,652 | 123,207 | 29 Jan 2026 | Direct | ||
| Jereme M. Sylvain | DXCM | Common Stock | Award | 6% | 7,123 | 125,859 | 29 Jan 2026 | Direct | ||
| Michael Jon Brown | DXCM | Common Stock | Tax liability | -2.62% | -2,653 | 98,655 | 29 Jan 2026 | Direct | ||
| Michael Jon Brown | DXCM | Common Stock | Award | 7.56% | 7,123 | 101,308 | 29 Jan 2026 | Direct | ||
| Kevin R. Sayer | DXCM | Common Stock | Tax liability | -7.73% | -34,257 | 408,990 | 29 Jan 2026 | Direct | ||
| Kevin R. Sayer | DXCM | Common Stock | Award | 19.1% | 71,218 | 443,247 | 29 Jan 2026 | Direct | ||
| Richard Alexander Collins | DXCM | Common Stock | Sale | -7.65% | $171,599 | $59.05 | -2,906 | 35,088 | 14 Nov 2025 | by Trust |
| Bridgette P. Heller | DXCM | Common Stock | Sale | -3.61% | $58,767 | $58.07 | -1,012 | 27,031 | 12 Nov 2025 | Direct |
| Jacob Steven Leach | DXCM | Common Stock | Purchase | 5.81% | $1,001,702 | $55.04 | 18,200 | 331,697 | 10 Nov 2025 | Direct |
| Richard Alexander Collins | DXCM | Common Stock | Sale | -9.41% | $217,811 | $55.17 | -3,948 | 37,994 | 10 Nov 2025 | by Trust |
| Euan A. Ashley | DXCM | Common Stock | Award | 7,166 | 7,166 | 24 Oct 2025 | Direct | |||
| Kyle Malady | DXCM | Common Stock | Sale | -2.86% | $53,934 | $80.86 | -667 | 22,667 | 05 Sep 2025 | Direct |
| Sadie Stern | DXCM | Common Stock | Sale | -1.37% | $117,280 | $80.00 | -1,466 | 105,223 | 04 Sep 2025 | Direct |
| Jereme M. Sylvain | DXCM | Common Stock | Sale | -3.91% | $357,796 | $74.17 | -4,824 | 118,657 | 02 Sep 2025 | Direct |
| Michael Jon Brown | DXCM | Common Stock | Sale | -0.53% | $40,145 | $80.29 | -500 | 94,102 | 15 Aug 2025 | Direct |
| Mark G. Foletta | DXCM | Common Stock | Sale | -5.1% | $222,903 | $81.06 | -2,750 | 51,121 | 15 Aug 2025 | by Trust |
| Sadie Stern | DXCM | Common Stock | Sale | -1.36% | $130,459 | $88.99 | -1,466 | 106,689 | 28 Jul 2025 | Direct |
| Mark G. Foletta | DXCM | Common Stock | Sale | -4.86% | $234,217 | $85.17 | -2,750 | 53,871 | 15 Jul 2025 | by Trust |
| Michael Jon Brown | DXCM | Common Stock | Sale | -0.53% | $43,015 | $86.03 | -500 | 94,602 | 15 Jul 2025 | Direct |
| Sadie Stern | DXCM | Common Stock | Sale | -1.34% | $124,698 | $85.06 | -1,466 | 108,155 | 26 Jun 2025 | Direct |
| Mark G. Foletta | DXCM | Common Stock | Sale | -4.63% | $228,605 | $83.13 | -2,750 | 56,621 | 16 Jun 2025 | by Trust |
| Michael Jon Brown | DXCM | Common Stock | Sale | -0.52% | $41,400 | $82.80 | -500 | 95,102 | 16 Jun 2025 | Direct |
| Nicholas Augustinos | DXCM | Common Stock | Sale | -9.9% | $304,042 | $82.80 | -3,672 | 33,411 | 16 Jun 2025 | by Trust |
| Nicholas Augustinos | DXCM | Common Stock | Sale | -6.59% | $213,864 | $81.69 | -2,618 | 37,083 | 13 Jun 2025 | by Trust |
| Sadie Stern | DXCM | Common Stock | Sale | -5.34% | $526,318 | $85.11 | -6,184 | 109,621 | 27 May 2025 | Direct |
| Michael Jon Brown | DXCM | Common Stock | Sale | -9.47% | $842,849 | $84.28 | -10,000 | 95,602 | 23 May 2025 | Direct |
| Jon Coleman | DXCM | Common Stock | Award | 68,738 | 68,738 | 22 May 2025 | Direct | |||
| Renee D. Gala | DXCM | Common Stock | Award | 20.3% | 1,161 | 6,881 | 08 May 2025 | Direct | ||
| Rimma Driscoll | DXCM | Common Stock | Award | 76.4% | 5,074 | 11,714 | 08 May 2025 | Direct | ||
| Kyle Malady | DXCM | Common Stock | Award | 28.6% | 5,192 | 23,334 | 08 May 2025 | Direct | ||
| Karen M. Dahut | DXCM | Common Stock | Gift | 17.2% | 2,613 | 17,779 | 08 May 2025 | by Trust |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.