Inogen, Inc

Item 1.01. Entry into a Material Definitive Agreement. On September 29, 2026, Inogen, Inc. (the “Company”) entered into an Asset Purchase Agreement (the “Purchase Agreement”) with Rotech Healthcare Inc. (the “Buyer”), pursuant to which the Company agreed to sell to the Buyer substantially all of the assets used or held for use solely in the operation of the Company’s United States oxygen rental business, including specified on-rent and on-hand inventory and related patient records (the “Transaction”). The aggregate purchase price is estimated at up to approximately $24.8 million based on the inventory and patient records to be transferred and is subject to post-closing reconciliation, and payable in six installments. The Transaction is subject to customary closing conditions.

Item 7.01. Regulation FD Disclosure. On September 30, 2026, the Company issued a press release announcing the execution of the Purchase Agreement and a separate product supply agreement with Rotech Healthcare Inc., together with the conditional amendment to the Company’s existing share repurchase program described in Item 8.01 below. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. The information in this Item 7.01, including Exhibit 99.1, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such filing.

Item 8.01. Other Events On September 28, 2026, the Company’s Board of Directors approved an amendment to the Company’s existing share repurchase program. The Company's existing share repurchase program was originally authorized by the Board of Directors on February 20, 2026 and provides for the repurchase of up to $30.0 million of the Company’s common stock, exclusive of fees, commissions and other expenses, through December 31, 2027. The amendment is conditioned upon, and will become effective only upon, the closing of the Transaction. Upon the closing of the Transaction, the amendment will increase the aggregate repurchase authorization from $30.0 million to $45.0 million, exclusive of fees, commissions and other expenses, and extend the program’s expiration date from December 31, 2027 to June 30, 2028. The $45.0 million authorization represents the total amount authorized under the program, including all repurchases previously made under the program, and is not an incremental authorization. All other terms of the existing program will remain unchanged. If the Transaction is not consummated, the amendment will not become effective, and the current terms of the existing share repurchase program will remain in effect.