UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of Earliest Event Reported): February 1226, 2026

DEXCOM, INC.

(Exact Name of the Registrant as Specified in Its Charter)


Delaware	000-51222	33-0857544
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)


6340 Sequence Drive, San Diego, CA						92121
(Address of Principal Executive Offices)						(Zip Code)

(858) 200-0200

(Registrant’s Telephone Number, Including Area Code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):


☐			Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)


☐			Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)


☐			Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))


☐			Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class

Trading Symbol(s)

Name of Each Exchange on Which Registered

Common Stock, $0.001 Par Value Per Share

DXCM

Nasdaq Global Select Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company

☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.

☐

ITEM 25.02. ~~RESULTS~~DEPARTURE OF ~~OPERATIONS~~DIRECTORS ~~AND~~OR ~~FINANCIAL~~CERTAIN ~~CONDITION~~OFFICERS; ELECTION OF DIRECTORS; APPOINTMENT OF CERTAIN OFFICERS; COMPENSATORY ARRANGEMENTS OF CERTAIN OFFICERS.

On February 12 26, 2026, the Board of Directors (the “Board”) of DexCom, Inc. (“Dexcom” or the “Company”), ~~issued~~pursuant ato ~~press~~the ~~release~~Amended ~~announcing~~and ~~its~~Restated ~~financial~~Bylaws ~~results~~of ~~for~~the Company, increased the ~~quarter~~size of the Board to twelve directors and ~~year~~appointed ~~ended~~Albert ~~December 31~~F. (“Rick”) Osterloh, ~~2025 and~~IV ~~certain~~as ~~other~~a ~~information~~director effective immediately. A ~~copy~~Mr. Osterloh will hold office for a term expiring at the 2026 annual meeting of Dexcom’s stockholders (the ~~press~~“2026 ~~release~~Annual isMeeting”). ~~furnished~~The asBoard ~~Exhibit~~also 99appointed Mr.1 Osterloh to ~~this~~serve ~~report~~as a member of the Compensation Committee and the Technology Committee of the Board, effective immediately.

~~The~~There ~~information~~is inno ~~this~~arrangement ~~Item~~or ~~2.02,~~understanding ~~including~~between ~~Exhibit 99~~Mr.1 ~~hereto,~~Osterloh isand ~~furnished~~any ~~and~~other ~~shall~~persons ~~not~~pursuant beto ~~deemed~~which ~~“filed”~~Mr. ~~for~~Osterloh ~~purposes~~was ofselected ~~Section~~as 18a ofdirector. ~~the~~Mr. ~~Securities~~Osterloh ~~Exchange~~is ~~Act~~not ofa ~~1934,~~party asto ~~amended~~and ~~(the~~does ~~“Exchange~~not ~~Act”),~~have any direct or ~~otherwise~~indirect ~~subject~~material tointerest ~~the~~in ~~liabilities~~any oftransaction ~~that~~with ~~section.~~Dexcom ~~The~~required ~~information~~to ~~contained~~be ~~herein~~disclosed ~~and~~under inItem ~~the~~404(a) ~~accompanying~~of ~~exhibit~~Regulation isS-K. ~~not~~The ~~incorporated~~Board bydetermined ~~reference~~that inMr. ~~any~~Osterloh ~~filing~~qualifies ofas ~~Dexcom~~an ~~under~~independent director pursuant to the Securities Act of 1933, as amended, orand the ~~Exchange~~listing ~~Act~~standards of the Nasdaq Stock Market, ~~whether~~in ~~made~~each ~~before~~case oras ~~after~~currently ~~the~~in ~~date~~effect. ~~hereof~~Mr. ~~and~~Osterloh ~~regardless~~also entered into Dexcom’s standard form of ~~any~~indemnity ~~general~~agreement ~~incorporation~~for ~~language~~its indirectors ~~such~~and ~~filing~~executive officers, ~~except~~which was filed as ~~shall~~Exhibit be10.43 ~~expressly~~to ~~set~~Dexcom’s ~~forth~~Annual byReport ~~specific~~on ~~reference~~Form in10-K ~~such~~for ~~filing~~the fiscal year ended December 31, 2020, as filed with the Securities and Exchange Commission on February 11, 2021.

In accordance with Dexcom’s non-employee director compensation program, upon his appointment Mr. Osterloh was granted an initial appointment equity grant of restricted stock units (“RSUs”) with a fair value of $500,000, vesting annually over the three years following the date of grant, subject to Mr. Osterloh’s continued service. Mr. Osterloh will also be eligible to receive the annual equity grant to non-employee directors on or around the 2026 Annual Meeting in the form of a grant of RSUs with a fair value of $101,027 for his service on the Board and committees (which amount reflects a pro-rata reduction in the base annual award amount for Board service of $325,000, calculated according to the number of days Mr. Osterloh will actually serve as a director between now and the 2026 Annual Meeting). The annual award vests on the earlier of the date of the first annual stockholder meeting thereafter or one year from the date of grant, subject to continued service. Vesting of outstanding equity awards held by non-employee directors is accelerated in full upon a change in control of Dexcom.

ITEM 7.01. REGULATION FD DISCLOSURE.

On February 26, 2026, Dexcom announced the appointment of Mr. Osterloh to the Board in a press release furnished as Exhibit 99.1 to this report and is incorporated herein by this reference.

ITEM 9.01. FINANCIAL STATEMENTS AND EXHIBITS.

(d) Exhibits.

Number						Description
99.1						Press release dated February 1226, 2026
104						Cover Page Interactive Data File (formatted as Inline XBRL)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

DEXCOM, INC.
By:						/s/ JEREME M. SYLVAINJereme M. SylvainExecutive Vice President, ~~and~~ Chief Financial Officer~~(Principal Financial and Accounting Officer)~~
Date:						February 1226, 2026

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