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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 2026-11-07T14:03:26.246Z

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2026-10-282026-10-27Stern SadieS2,565Not reported

First displayed source row from Recent Form 4 activity. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-10-27 and its public availability date is 2026-10-28. Subtracting those calendar dates gives 1 day of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code S: a sale. A purchase-following rule excludes this sale even if the reported dollar amount is large.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

SEC 0001093557-26-000187 ↗SEC 0001093557-26-000183 ↗SEC 0001093557-26-000181 ↗

Recent Form 4 activity

Inspect all 14 displayed rows: Recent Form 4 activity

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2026-10-282026-10-27Stern SadieS2,565Not reported
2026-10-192026-10-15Brown Michael JonS1,700Not reported
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

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

Recent institutional filing receipts

Inspect all 50 displayed rows: 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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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.