Transaction · 0001093557-26-000179

Augustinos Nicholas

AUGUSTINOS NICHOLAS, DIR, reported an open-market or private sale at DEXCOM INC involving 6539.000000 shares for an estimated $549537.56. Reported holdings after the transaction were 29293.000000 shares. The stored filing text includes a detected 10b5-1 reference.

Open-market sellSEC transaction code SDIR
DXCMDEXCOM INC
Trade date
Sep 15, 2026
Filing date
Sep 16, 2026
View on SEC Insider profile
Disclosed value-$549kShares × reported price
Shares traded6.53k$84.04 per share
Holdings after29.2kIndirect · by Trust
% of reported position traded18.25%This security and ownership context
How reported position traded is calculated

Shares sold ÷ (holdings after + shares sold). Estimated position before: 35,832 shares.

Row-level estimate for this security and ownership context, not the insider’s complete portfolio. Joint ownership, other transactions in the filing, amendments and footnotes can affect interpretation.

DXCM price since this filing

Daily closing prices, with the filing date and available return windows
DXCM · Daily closing priceLoading daily prices…
Filing dateReturn windows appear as prices become available.
Pre-filing1mo ago +2.8%1w ago -3.2%1d ago -3.0%
Returns since7d +0.4%30d -1.5%90d180d1y

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
Sell
Code S
Identifier
0001093557-26-000179
Common Stock
Transaction date
Sep 15, 2026
Filed Sep 16, 2026, 08:26 PM · 1d delay
Shares
6,539 sh
$84.04 per share
Estimated value
-$549k
Computed from shares × price
Holdings after
29,293 sh
Indirect · by Trust

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Cluster Selling Repeat Seller 10b5-1 Detected
Filing-only score

-6 points

Compact filing score computed from stored Form 4 facts. Version v1.

Mixed or weak signal

This filing has a negative filing-only score. It may be less informative as an insider-activity signal and needs extra context.

How this score is calculated
  • timely_filing+4 points

    reporting_delay_days = 1

    Filing reported within two business days of the transaction.
  • tenb5_1_detected-10 points

    is_10b5_1 = true

    Stored filing content includes detected 10b5-1 language.
Read the scoring methodology

Signed filing-only points, not a probability or expected return. Version v1.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

No officer title

Officer NoDirector Yes10% NoOther No
Footnotes & amended
  1. F1

    On June 10, 2026, Mr. Augustinos adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Augustinos. The shares set forth above were sold pursuant to the 10b5-1 P…

  2. F2

    Shares are held by the Kirschner/Augustinos Revocable Trust, with respect to which the Reporting Person is a trustee.

  3. F3

    Represents unvested restricted stock units which were granted on May 28, 2026 and will vest on the earlier of the one year anniversary of the grant date or the date of DexCom, Inc.'s 2027 Annual Meeti…

Original filing · 0001093557-26-000179
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