Public ownership evidence

DexCom, Inc. (DXCM) Ownership Disclosures

Read DXCM insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-10-10T12:08:28.848Z

Separate the three disclosure sources

Step 1 of 3

Recent Form 4 activity

DexCom, Inc.: source evidence dated 2026-10-10T12:08:28.848Z.

Available
2026-09-30
Trade date
2026-09-28
Reporting owners
Stern Sadie
Code
S
Shares
2,565
Reported value
Not reported
What you should see

The displayed owner or issuer and source fields identify the receipt to verify; keep reporting and availability dates separate.

Step 2 of 3

Is this an insider transaction, 13F holding, or Congressional event?

Each source has different dates and units. Raw ticker-matched receipts, including amendments, are not deduplicated current ownership totals.

SEC 0001093557-26-000181
What you should see

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Step 3 of 3

Read DXCM fundamentals

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Read DXCM fundamentals
What you should see

Keep reporting dates and units beside the answer, and inspect its original citations.

Recent Form 4 activity

See the complete recent form 4 activity

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2026-09-302026-09-28Stern SadieS2,565Not reported
2026-09-162026-09-15AUGUSTINOS NICHOLASS6,539Not reported
2026-09-162026-09-14AUGUSTINOS NICHOLASS1,550Not reported
2026-09-162026-09-15Brown Michael JonS1,700Not reported
2026-09-142026-09-10Sylvain Jereme MS3,638Not reported
2026-09-102026-09-10Boehnlein Glenn SA5,841Not reported
2026-08-292026-08-27Stern SadieS2,565Not reported
2026-08-252026-08-20SAYER KEVIN RS97Not reported
2026-08-252026-08-20SAYER KEVIN RS7,351Not reported
2026-08-252026-08-20SAYER KEVIN RS19,308Not reported
2026-08-182026-08-14Brown Michael JonS1,700Not reported
2026-08-142026-08-12Heller Bridgette PS1,012Not reported
2026-08-052026-08-03FOLETTA MARK GS2,000Not reported
2026-08-052026-07-31FOLETTA MARK GS2,000Not reported
2026-07-222026-07-20SAYER KEVIN RS26,756Not reported
2026-07-172026-07-15Brown Michael JonS1,700Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

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Cornerstone Financial Management LLC2026-06-302026-08-2986$5,792None
Cornerstone Financial Management LLC2026-03-312026-08-2926$1,633None
Cornerstone Financial Management LLC2025-12-312026-08-299$597None
B. Riley Wealth Advisors, Inc.2025-03-312026-08-293,716$253,792None
Advisors Asset Management, Inc.2021-12-312026-08-288,536$4,583,405None
Advisors Asset Management, Inc.2022-12-312026-08-287,919$896,748None
Advisors Asset Management, Inc.2020-06-302026-08-288,467$3,432,522None
Advisors Asset Management, Inc.2022-06-302026-08-2818,722$1,395,000None
Advisors Asset Management, Inc.2021-09-302026-08-287,333$4,010,000None
Corient Private Wealth LP2026-06-302026-08-28123,439$8,313,621None
Corient Private Wealth LP2026-06-302026-08-287,299$491,575None
Principia Wealth Advisory, LLC2026-06-302026-08-2735$2,357None
Principia Wealth Advisory, LLC2026-03-312026-08-2727$1,696None
Brown Financial Advisors2026-06-302026-08-2717,222$1,159,868None
Advisors Asset Management, Inc.2024-03-312026-08-2714,800$2,052,760None
Advisors Asset Management, Inc.2025-03-312026-08-2712,674$865,507None
Advisors Asset Management, Inc.2022-09-302026-08-2717,628$1,420,000None
Advisors Asset Management, Inc.2020-12-312026-08-279,497$3,511,000None
Advisors Asset Management, Inc.2022-03-312026-08-277,437$3,804,769None
Advisors Asset Management, Inc.2023-06-302026-08-2714,703$1,889,483None
Advisors Asset Management, Inc.2023-09-302026-08-2716,291$1,519,950None
Advisors Asset Management, Inc.2023-03-312026-08-277,789$904,926None
Advisors Asset Management, Inc.2021-03-312026-08-279,437$3,391,563None
Advisors Asset Management, Inc.2021-06-302026-08-278,367$3,573,000None
Advisors Asset Management, Inc.2020-09-302026-08-279,511$3,920,720None
Advisors Asset Management, Inc.2025-09-302026-08-2711,812$794,829None
Advisors Asset Management, Inc.2023-12-312026-08-2712,991$1,612,053None
Groupe la Francaise2026-06-302026-08-2675,630$5,098,045None
Advisors Asset Management, Inc.2019-12-312026-08-267,411$1,621,082None
VIRGINIA RETIREMENT SYSTEMS ET Al2026-03-312026-08-26135,200$8,490,560None
VIRGINIA RETIREMENT SYSTEMS ET Al2026-06-302026-08-26538,750$36,284,813None
Advisors Asset Management, Inc.2025-06-302026-08-2511,415$996,415None
CYBER HORNET ETFs LLC2026-06-302026-08-251,050$70,718None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-25581,686$39,176,552None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-2539,176,552$581,686,000None
Advisors Asset Management, Inc.2024-09-302026-08-228,791$589,349None
Advisors Asset Management, Inc.2024-06-302026-08-2214,887$1,687,888None
Advisors Asset Management, Inc.2024-12-312026-08-2211,948$929,196None
Advisors Asset Management, Inc.2025-12-312026-08-229,091$603,370None
Advisors Asset Management, Inc.2020-03-312026-08-228,175$2,201,282None
Assenagon Asset Management S.A.2026-06-302026-08-22693,635$46,716,317None
Harvest Fund Management Co., Ltd2026-06-302026-08-2128,678$1,931,000None
Rehmann Capital Advisory Group2026-06-302026-08-215,213$351,364None
Archer Investment Corp2026-06-302026-08-2077$5,186None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-2068,879$4,638,992None
Beacon Pointe Advisors, LLC2026-06-302026-08-197,303$491,828None
Advisors Asset Management, Inc.2019-03-312026-08-196,158$733,418None
Advisors Asset Management, Inc.2019-09-302026-08-197,436$1,109,749None
Advisors Asset Management, Inc.2019-06-302026-08-196,317$946,539None
Ensign Peak Advisors, Inc2026-03-312026-08-19362,712$22,778,314None

90-day public filing window, up to 50 source positions.

Cornerstone Financial Management LLC ↗Cornerstone Financial Management LLC ↗Cornerstone Financial Management LLC ↗B. Riley Wealth Advisors, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Corient Private Wealth LP ↗

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

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No records are available for this view.

Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.

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