STOCK TITAN

Dexcom (DXCM) Executive Chair sells 26,756 shares in 10b5-1 open-market trade

Filing Impact
(Very High)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

Dexcom Inc. Executive Chair Kevin R. Sayer sold 26,756 shares of common stock in an open-market transaction at $72.00 per share. The sale was executed under a Rule 10b5-1 trading plan that Sayer adopted on February 18, 2026 to allow orderly dispositions of his holdings.

After the transaction, Sayer directly owns 355,726 Dexcom shares, which include 106,972 unvested restricted stock units scheduled to vest in tranches through March 8, 2028. The filing shows he retains a substantial equity position following this planned sale.

Positive

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Negative

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Insider SAYER KEVIN R
Role Executive Chair
Sold 26,756 shs ($1.93M)
Type Security Shares Price Value
Sale Common Stock 26,756 $72.00 $1.93M
Holdings After Transaction: Common Stock — 355,726 shares (Direct, null)
Footnotes (1)
  1. On February 18, 2026, Mr. Sayer adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Sayer. The shares set forth above were sold pursuant to the 10b5- 1 Plan. Included in this number are 106,972 unvested restricted stock units, 32,749 of which were granted on March 8, 2026 and shall vest through March 8, 2027, 56,993 of which were granted on March 8, 2025 and shall vest through March 8, 2028, and 17,230 of which were granted on March 8, 2024 and shall vest through March 8, 2027.
Shares sold 26,756 shares Open-market sale on July 6, 2026
Sale price $72.00 per share Price for common stock sold
Shares held after 355,726 shares Direct ownership following the transaction
Unvested RSUs 106,972 units Included within post-transaction holdings
2026 RSU grant 32,749 units Granted March 8, 2026, vesting through March 8, 2027
2025 RSU grant 56,993 units Granted March 8, 2025, vesting through March 8, 2028
2024 RSU grant 17,230 units Granted March 8, 2024, vesting through March 8, 2027
10b5-1 plan adoption February 18, 2026 Date Sayer adopted Rule 10b5-1 trading plan
Rule 10b5-1 Plan regulatory
"This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Sayer."
A Rule 10b5-1 plan is a prearranged, written schedule that lets corporate insiders buy or sell company stock at set times or amounts, even if they later learn material nonpublic information. Think of it like setting an automatic thermostat for trades: it creates a clear record that trades were planned in advance, reducing the risk of insider-trading accusations and helping investors trust that insider transactions are routine rather than based on secret information.
open-market sale financial
"transaction_action: "open-market sale""
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.
restricted stock units financial
"Included in this number are 106,972 unvested restricted stock units, 32,749 of which were granted..."
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.
unvested financial
"Included in this number are 106,972 unvested restricted stock units..."
Executive Chair other
"officer_title: "Executive Chair""
An executive chair is the board chairperson who also takes an active, hands-on role in company management, typically working closely with the CEO and senior team to shape strategy and major decisions. For investors it matters because this blend of oversight and operational power can accelerate strategic moves and provide steady leadership—like a coach who also calls plays—but it can also concentrate authority and create governance or succession risks if too much depends on one person.
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FAQ

What insider transaction did Dexcom (DXCM) report for Kevin R. Sayer?

Dexcom reported that Executive Chair Kevin R. Sayer sold 26,756 shares of common stock at $72.00 per share. The transaction was an open-market sale under a pre-arranged Rule 10b5-1 trading plan adopted on February 18, 2026.

How many Dexcom (DXCM) shares does Kevin R. Sayer hold after this sale?

After the sale, Kevin R. Sayer holds 355,726 Dexcom shares directly. This total includes 106,972 unvested restricted stock units that are scheduled to vest over time through March 8, 2028, reflecting a continuing significant equity stake.

Was Kevin R. Sayer’s Dexcom (DXCM) share sale part of a Rule 10b5-1 plan?

Yes. The filing states that Sayer adopted a Rule 10b5-1 trading plan on February 18, 2026. The 26,756 Dexcom shares reported sold at $72.00 per share were disposed of pursuant to this pre-arranged plan for orderly stock sales.

What price did Kevin R. Sayer receive for his Dexcom (DXCM) share sale?

The reported open-market sale was executed at $72.00 per share. With 26,756 shares sold, the gross transaction value reflects this per-share price, as disclosed in the Form 4 insider trading report filed for Kevin R. Sayer.

What unvested equity awards does Kevin R. Sayer have in Dexcom (DXCM)?

Sayer’s post-transaction holdings include 106,972 unvested restricted stock units. These consist of 32,749 units granted March 8, 2026, 56,993 units granted March 8, 2025, and 17,230 units granted March 8, 2024, vesting through March 8, 2028.
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
X
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
SAYER KEVIN R

(Last)(First)(Middle)
6340 SEQUENCE DRIVE

(Street)
SAN DIEGO CALIFORNIA 92121

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
DEXCOM INC [ DXCM ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
Executive Chair
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
07/06/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock07/06/2026S26,756(1)D$72355,726(2)D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. On February 18, 2026, Mr. Sayer adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Sayer. The shares set forth above were sold pursuant to the 10b5- 1 Plan.
2. Included in this number are 106,972 unvested restricted stock units, 32,749 of which were granted on March 8, 2026 and shall vest through March 8, 2027, 56,993 of which were granted on March 8, 2025 and shall vest through March 8, 2028, and 17,230 of which were granted on March 8, 2024 and shall vest through March 8, 2027.
Remarks:
/s/ Jereme M. Sylvain, as Attorney-in-Fact for Kevin R. Sayer07/07/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)