ONEMAIN FINANCE CORP

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

(Mark One)

☑ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT

OF 1934

For the fiscal year ended December 31, 2025

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE

ACT OF 1934

For the transition period from to

Commission file number

001-36129 (OneMain Holdings, Inc.)

001-06155 (OneMain Finance Corporation)

ONEMAIN HOLDINGS, INC.

ONEMAIN FINANCE CORPORATION

(Exact name of registrant as specified in its charter)

601 N.W. Second Street, Evansville, IN 47708

(Address of principal executive offices) (Zip code)

(812)424-8031

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Securities Exchange Act of 1934:

(

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the Act.

OneMain Holdings, Inc. Yes☐ No ☑

OneMain Finance Corporation Yes☐ No ☑

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a 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.

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.

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report.

OneMain Holdings, Inc.☑

If securities are registered pursuant to Section 12(b) of the Act, indicate by checkmark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements.

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b).

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

OneMain Holdings, Inc. Yes☐ No☑

OneMain Finance Corporation Yes☐ No☑

The aggregate market value of the voting and non-voting common equity of OneMain Holdings, Inc. held by non-affiliates as of the close of business on June 30, 2025 was $6,754,235,520. All of OneMain Finance Corporation’s common stock is held by OneMain Holdings, Inc.

At January 27, 2026, there were 117,152,064 shares of OneMain Holdings, Inc.'s common stock, $0.01 par value, outstanding.

At January 27, 2026, there were 10,160,021 shares of OneMain Finance Corporation's common stock, $0.50 par value, outstanding.

This annual report on Form 10-K (“Annual Report”) is a combined report being filed separately by two different registrants: OneMain Holdings, Inc. and OneMain Finance Corporation. OneMain Finance Corporation’s equity securities are owned directly by OneMain Holdings, Inc. The information in this Annual Report on Form 10-K is equally applicable to OneMain Holdings, Inc. and OneMain Finance Corporation, except where otherwise indicated. OneMain Finance Corporation meets the conditions set forth in General Instructions I(1)(a) and (b) of Form 10-K and, to the extent applicable, is therefore filing this form with a reduced disclosure format.

DOCUMENTS INCORPORATED BY REFERENCE

The information required by Part III (Items 10, 11, 12, 13, and 14) of this Annual Report on Form 10-K is incorporated by reference from OneMain Holdings, Inc.'s Definitive Proxy Statement for its 2026 Annual Meeting to be filed with the Securities and Exchange Commission pursuant to Regulation 14A.

TABLE OF CONTENTS

GLOSSARY

Terms and abbreviations used in this report are defined below.