PNC FINANCIAL SERVICES GROUP, INC.

Total investment securities of $141.5 billion at September 30, 2025 increased $1.8 billion, or 1%, compared to December 31, 2024, due to increased net purchase activity, primarily of agency mortgage-backed securities, and a decline in unrealized losses on the available-for-sale portfolio.

The level and composition of the investment securities portfolio fluctuates over time based on many factors, including market conditions, loan and deposit growth and balance sheet management activities. We manage our investment securities portfolio to optimize returns, while providing a reliable source of liquidity for our banking and other activities, considering the LCR, NSFR and other internal and external guidelines and constraints.

Table 9: Investment Securities (a)

(a)Of our total securities portfolio, 97% were rated AAA/AA at both September 30, 2025 and December 31, 2024.

(b)Amortized cost is presented net of the allowance for investment securities, which totaled $67 million at September 30, 2025 and primarily related to non-agency commercial mortgage-backed securities. The comparable amount at December 31, 2024 was $91 million.

(c)Collateralized primarily by multifamily housing, office buildings, retail properties, lodging properties and industrial properties.

(d)Collateralized primarily by consumer credit products, corporate debt and government guaranteed education loans.

(e)Includes state and municipal securities and corporate bonds.

(f)Includes available-for-sale and held-to-maturity securities, which are recorded on our balance sheet at fair value and amortized cost, respectively.

10 The PNC Financial Services Group, Inc. –Form 10-Q

Table 9 presents our investment securities portfolio by amortized cost and fair value. The difference between fair value and amortized cost at September 30, 2025 primarily reflected the impact of higher interest rates on the valuation of fixed-rate securities. We continually monitor the credit risk in our portfolio and maintain the allowance for investment securities at an appropriate level to absorb expected credit losses on our investment securities portfolio for the remaining contractual term of the securities adjusted for expected prepayments. See Note 2 Investment Securities for additional details regarding the allowance for investment securities.

The duration of investment securities was 3.4 years and 3.5 years at September 30, 2025 and December 31, 2024, respectively. We estimate that at September 30, 2025 the effective duration of investment securities was 3.4 years for both an immediate 50 basis points parallel increase and decrease in interest rates. Comparable amounts at December 31, 2024 for the effective duration of investment securities were 3.4 years and 3.5 years, respectively.

Based on expected prepayment speeds, the weighted-average expected maturity of the investment securities portfolio was 5.0 years and 5.3 years at September 30, 2025 and December 31, 2024, respectively.