Oportun Financial Corp

Due to credit tightening in response to the COVID-19 pandemic and government stimulus payments, our Annualized Net Charge-off Rate was 6.8% in 2021, lower than our historical norms. Our Annualized Net Charge-off Rate increased to 10.1% in 2022 primarily due the impact of historically high inflation, the cessation of COVID-19 stimulus payments and a higher mix of first-time borrowers in 2021 and the first half of 2022. In response to this increase, in the second half of 2022 and continuing throughout 2023 and 2024, we tightened our credit underwriting standards and focused lending towards returning members to improve credit outcomes. The Annualized Net Charge-off Rate for the years ended December 31, 2025 and 2024 were both 12.0%. On a dollar basis for the year ended December 31, 2025, Net Charge-offs decreased by$5.9 million, while our average daily principal balance declined by 2%, when compared to the year ended December 31, 2024. For the year ended December 31, 2025, the back book, loans originated prior to our significant credit tightening actions in July 2022, had principally run off and made-upless than 1% of the loans receivable, although contributing 5% of gross charge-offs forthree months ended December 31,2025. We evaluate our loan portfolio and charge a loan off at the earlier of when the loan is determined to be uncollectible or when loans are 120 days contractually past due.

In addition to monitoring our loss and delinquency performance on an owned portfolio basis, we also monitor the performance of our loans by the period in which the loan was disbursed, generally years or quarters, which we refer to as a vintage. We calculate net lifetime loan loss rate by vintage as a percentage of original principal balance. Net lifetime loan loss rates equal the net lifetime loan losses for a given year through December 31, 2025, divided by the total origination loan volume for that year.

The below chart and table show our net lifetime loan loss rate for each annual vintage of our personal loan product since 2015, excluding loans originated from July 2017 to August 2020 and beginning December 2023 under a loan program for borrowers who did not meet the qualifications for our core loan origination program; 100% of those loans were sold pursuant to a whole loan sale agreement. Cumulative net lifetime loan losses for the 2015, 2016, 2017, and 2018 vintages increased partially due to the delay in tax refunds in 2017 and 2019, the impact of natural disasters such as Hurricane Harvey, and the longer duration of the loans. The 2018 and 2019 vintages were increasing due to the COVID-19 pandemic. The 2021 vintage is experiencing higher charge-offs than prior vintages primarily due to a higher percentage of loan disbursements to new members. We tightened credit, reduced loan size and loan term, and began reducing loan volumes to new and returning members beginning in the third quarter of 2022. In the second half of 2023 we did further tightening and shortened average term length which resulted in stronger performance of the 2023 vintages in the second half of the year as compared to the 2022 vintages for the same period. Higher costs for food, fuel, and rent along with macro-economic uncertainty have continued to put pressure on our members through the end of 2025. We employ collection strategies and tools to help customers make ongoing payments against their loans, with new efforts launched that: expanded the frequency and content of our digital and telephony communications; broadened eligibility for collection tools that help customers address payment difficulties; and eased customer access to those collection tools via new online and mobile app self-enrollment capability, supported by a new collections strategy system that enables centralized, faster, and more-targeted application of strategies.

• Vintage is not yet fully mature from a loss perspective.