Company: VVR
Filing Date: 2025-11-07
Form Type: N-CSRS
Source: 0001193125-25-271170
Chunk: 20

Company: Invesco Senior Income Trust
Filing Date: 2025-11-07
Form: N-CSRS
Chunk 20
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 portfolio and providing certain services to the holders of the Trust’s securities. For the six months ended August 31, 2025, expenses incurred under these agreements are shown in the Consolidated Statement of Operations as Administrative services fees. Invesco has entered into a sub-administrationagreement whereby State Street Bank and Trust Company (“SSB”) serves as fund accountant and provides certain administrative services to the Trust. Pursuant to a custody agreement with the Trust, SSB also serves as the Trust’s custodian. Certain officers and trustees of the Trust are officers and directors of Invesco. NOTE 3–Additional Valuation Information GAAP defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date, under current market conditions. GAAP establishes a hierarchy that prioritizes the inputs to valuation methods, giving the highest priority to readily available unadjusted quoted prices in an active market for identical assets (Level 1) and the lowest priority to significant unobservable inputs (Level 3), generally when market prices are not readily available. Based on the valuation inputs, the securities or other investments are tiered into one of three levels. Changes in valuation methods may result in transfers in or out of an investment’s assigned level:

| Level 1 –Prices | are determined using quoted prices in an active market for identical assets. |

| Level 2 –Prices | are determined using other significant observable inputs. Observable inputs are inputs that other market participants may use in pricing a security. These may include quoted prices for similar securities, interest rates, prepayment speeds, credit risk, yield curves, loss severities, default rates, discount |

| 30 |     | Invesco Senior Income Trust |

rates, volatilities and others. When market movements occur after the close of the relevant foreign securities markets, foreign securities may be fair valued utilizing an independent pricing service. Level 3 – Prices are determined using significant unobservable inputs. In situations where quoted prices or observable inputs are unavailable (for example, when there is little or no market activity for an investment at the end of the period), unobservable inputs may be used. Unobservable inputs reflect the Adviser’s assumptions about the factors market participants would use in determining fair value of the securities or instruments and would be based on the best available information. The following is a summary of the tiered valuation input levels, as of August 31, 2025. The level assigned