Company: INGN
Filing Date: 2025-02-28
Form Type: S-8
Source: 0000950170-25-030082
Chunk: 0

Company: Inogen Inc
Filing Date: 2025-02-28
Form: S-8
Chunk 0
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<div align='center'>As filed with the Securities and Exchange Commission on February 28, 2025</div>

Registration Statement No. 333-

<div align='center'>UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM S-8

REGISTRATION STATEMENT

Under

THE SECURITIES ACT OF 1933

Inogen, Inc.

(Exact name of registrant as specified in its charter)</div>

| Delaware                                                      | 33-0989359                         |
| (State or other jurisdiction ofincorporation or organization) | -I.R.S. EmployerIdentification No. |

<div align='center'>859 Ward Drive

Goleta, California 93111

(Address of principal executive offices)

Inogen, Inc. 2014 Employee Stock Purchase Plan

(Full title of the plan)

Kevin R. M. Smith

Chief Executive Officer and President

Inogen, Inc.

859 Ward Drive

Goleta, California 93111

(Name and address of agent for service)

(805) 562-0500

(Telephone number, including area code, of agent for service)

Copies to:</div>

| Sarah C. Griffiths                  
 Covington & Burling LLP             
 One International Place, Suite 1020 
 Boston, MA 02110                    
 Telephone: (617) 603-8800           | Kevin P. Smith            
 General Counsel           
 Inogen, Inc.              
 859 Ward Drive            
 Goleta, California 93111  
 Telephone: (805) 562-0500 |

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

| Large accelerated filer |     | ☐ |     | Accelerated filer         |     | ☒ |
| Non-accelerated filer   |     | ☐ |     | Smaller reporting company |     | ☒ |
|                         |     |   |     | 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