Inogen Inc

On February 27, 2026, Jennifer Yi Boyer, our Executive Vice President, Enterprise Enablement and Chief Human Resources Officer, terminated a trading plan intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act, which was previously adopted on September 10, 2025 (the “Prior Plan”). The Prior Plan covered the sale of an amount of shares of our common stock necessary to generate an aggregate of $70,000 in net proceeds. The Prior Plan would have expired on the earlier of the close of trading on August 14, 2026, or the date on which the maximum aggregate number of shares to be sold under the plan is sold, subject to early termination for certain specified events set forth in the plan. Following termination of the Prior Plan, on February 27, 2026, Ms. Yi Boyer entered into a new trading plan intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act for the sale of the shares of Inogen common stock (the “Boyer 10b5-1 Plan”). The Boyer 10b5-1 Plan terminates on the earlier of the close of trading on February 27, 2027, or the date on which the maximum aggregate number of shares to be sold under the plan is sold, subject to early termination for certain specified events set forth in the plan. The Boyer 10b5-1 Plan covers the sale of an amount of shares of our common stock necessary to generate an aggregate of $70,000 in net proceeds.

Other than as disclosed above, during the three months ended March 31, 2026, no director or Section 16 reporting officer adopted or terminated any Rule 10b5-1 trading arrangement or non-Rule 10b5-1 trading arrangement (as such terms are defined in Item 408 of the SEC’s Regulation S-K).