Inogen (NASDAQ: INGN) releases preliminary Q4 and 2025 revenue results

Rhea-AI Filing Summary

Inogen, Inc. filed a current report to let investors know it has released preliminary, unaudited revenue results for its fourth quarter and full year ended December 31, 2025. The company communicated these figures in a press release dated January 12, 2026, which is included as Exhibit 99.1. The filing emphasizes that the amounts are preliminary, have not been audited, and may change once the annual financial statements are completed, so they provide only a partial view of the company’s financial performance. Inogen also clarifies that the press release and related information are being furnished, not filed, which affects how they are treated under securities laws and in future SEC filings.

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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): January 12, 2026

INOGEN, INC.

(Exact name of Registrant as Specified in Its Charter)

Delaware			001-36309	33-0989359
(State or Other Jurisdiction of Incorporation)			(Commission File Number)	(IRS Employer Identification No.)
859 Ward Drive
Goleta, California				93111
(Address of Principal Executive Offices)				(Zip Code)

Registrant’s Telephone Number, Including Area Code: (805) 562-0500

(Former Name or Former Address, if Changed Since Last Report)

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:

☐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		INGN		The Nasdaq Stock Market LLC

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 2.02 Results of Operations and Financial Condition.

On January 12, 2026, Inogen, Inc. (the “Company”) issued a press release reporting preliminary, unaudited revenue results for the fourth quarter and full year ended December 31, 2025. The amounts included in the press release are preliminary, have not been audited and are subject to change upon completion of the Company’s audited financial statements for the year ended December 31, 2025. Additional information and disclosures would be required for a more complete understanding of the Company’s financial position and results of operations as of December 31, 2025. A copy of the press release is furnished herewith as Exhibit 99.1 to this Current Report 8-K.

The information set forth under this Item 2.02, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits

Exhibit		Description
99.1		Press Release, dated January 12, 2026
104		The cover page of this Current Report on Form 8-K, formatted in 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 thereunto duly authorized.

			INOGEN, INC.
Date:	January 12, 2026	By:	/s/ Michael Bourque
			Michael Bourque Executive Vice President Chief Financial Officer Treasurer (Principal Accounting and Financial Officer)

FAQ

What did Inogen (INGN) report in this Form 8-K?

Inogen reported that it issued a press release with preliminary, unaudited revenue results for the fourth quarter and full year ended December 31, 2025, furnished as Exhibit 99.1.

Which periods do Inogen's preliminary results in this 8-K cover?

The preliminary revenue results disclosed by Inogen cover the fourth quarter and the full year ended December 31, 2025.

Are Inogen's revenue figures in this 8-K audited?

No. The company states the revenue amounts are preliminary and unaudited and are subject to change upon completion of its audited financial statements for the year ended December 31, 2025.

Where can investors find the detailed preliminary results for Inogen (INGN)?

Details are contained in Inogen’s press release dated January 12, 2026, which is included with the filing as Exhibit 99.1.

Is the information in Inogen’s Exhibit 99.1 considered filed with the SEC?

No. Inogen specifies that the information under Item 2.02, including Exhibit 99.1, is being furnished, not filed, for purposes of Section 18 of the Exchange Act.

Does this 8-K include Inogen's full financial statements for 2025?

No. The company notes that the press release only includes preliminary revenue results and that additional information would be required for a more complete understanding of its financial position and results of operations as of December 31, 2025.