MYI · Blackrock Muniyield Quality Fund III, Inc.

Effective as of February 23, 2026, BlackRock MuniVest Fund, Inc. (the "Target Fund") was reorganized into BlackRock MuniYield Quality Fund III, Inc. (the "Acquiring Fund"). In the reorganization, common shareholders of the Target Fund received common shares of the Acquiring Fund having a value equal to the aggregate NAV of the Target Fund common shares surrendered as determined at the close of business on February 20, 2026, less the costs of the reorganization. As of February 20, 2026, the Target Fund reported a NAV per share of $7.5919 and the Acquiring Fund reported a NAV per share of $12.0089. The conversion ratio for the Target Fund's common shares was 0.63218946. In the reorganization, Michael Kalinoski received 1 common share (and cash for fractional shares, if any) of the Acquiring Fund in exchange for his 2.2247 common shares of the Target Fund.

Effective as of February 23, 2026 BlackRock MuniVest Fund II, Inc. (the "Target Fund") was reorganized into BlackRock MuniYield Quality Fund III, Inc. (the "Acquiring Fund"). In the reorganization, common shareholders of the Target Fund received common shares of the Acquiring Fund having a value equal to the aggregate NAV of the Target Fund common shares surrendered as determined at the close of business on February 20, 2026, less the costs of the reorganization. As of February 20, 2026, the Target Fund reported a NAV per share of $11.7926 and the Acquiring Fund reported a NAV per share of $12.0089. The conversion ratio for the Target Fund's common shares was 0.98198836. In the reorganization, Michael Kalinoski received 3085 common shares (and cash for fractional shares, if any) of the Acquiring Fund in exchange for his 3141.7166 common shares of the Target Fund.

Effective as of February 23, 2026 BlackRock MuniVest Fund II, Inc. (the "Target Fund") was reorganized into BlackRock MuniYield Quality Fund III, Inc. (the "Acquiring Fund") ]. In the reorganization, common shareholders of the Target Fund received common shares of the Acquiring Fund having a value equal to the aggregate NAV of the Target Fund common shares surrendered as determined at the close of business on February 20, 2026, less the costs of the reorganization. As of February 20, 2026, the Target Fund reported a NAV per share of $11.7926 and the Acquiring Fund reported a NAV per share of $12.0089. The conversion ratio for the Target Fund's common shares was 0.98198836. In the reorganization, Stayce D. Harris received 10 common shares (and cash for fractional shares, if any) of the Acquiring Fund in exchange for her 10.7937 common shares of the Target Fund.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

Effective as of February 23, 2026, BlackRock MuniVest Fund, Inc. (the "Target Fund") was reorganized into BlackRock MuniYield Quality Fund III, Inc. (the "Acquiring Fund"). In connection with this reorganization, phantom stock units previously awarded to Phillip Soccio in the Target Fund were reallocated to the Acquiring Fund. The number of phantom stock units in the Acquiring Fund (109.17 units at $11.24 per share) represents the value of the reporting person's former Target Fund phantom stock units converted at the exchange ratio used in the reorganization. No additional consideration was paid by the reporting person in connection with this reallocation.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 4, 2025, the Reporting Person was granted phantom shares on January 31, 2025 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

As previously reported on a Form 4 dated February 2, 2023, the Reporting Person was granted phantom shares on January 31, 2023 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 4, 2025, the Reporting Person was granted phantom shares on January 31, 2025 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

As previously reported on a Form 4 dated February 2, 2023, the Reporting Person was granted phantom shares on January 31, 2023 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 4, 2025, the Reporting Person was granted phantom shares on January 31, 2025 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 2, 2023, the Reporting Person was granted phantom shares on January 31, 2023 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

These phantom shares vest in equal installments on each of the first three anniversaries of the award.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 4, 2025, the Reporting Person was granted phantom shares on January 31, 2025 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 4, 2025, the Reporting Person was granted phantom shares on January 31, 2025 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

As previously reported on a Form 4 dated February 2, 2023, the Reporting Person was granted phantom shares on January 31, 2023 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 2, 2023, the Reporting Person was granted phantom shares on January 31, 2023 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

These phantom shares vest in equal installments on each of the first three anniversaries of the award.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 2, 2023, the Reporting Person was granted phantom shares on January 31, 2023 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 4, 2025, the Reporting Person was granted phantom shares on January 31, 2025 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

As previously reported on a Form 4 dated February 2, 2023, the Reporting Person was granted phantom shares on January 31, 2023 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 4, 2025, the Reporting Person was granted phantom shares on January 31, 2025 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 4, 2025, the Reporting Person was granted phantom shares on January 31, 2025 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

As previously reported on a Form 4 dated February 2, 2023, the Reporting Person was granted phantom shares on January 31, 2023 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 4, 2025, the Reporting Person was granted phantom shares on January 31, 2025 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

As previously reported on a Form 4 dated February 2, 2023, the Reporting Person was granted phantom shares on January 31, 2023 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 2, 2023, the Reporting Person was granted phantom shares on January 31, 2023 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

As previously reported on a Form 4 dated February 2, 2022, the Reporting Person was granted phantom shares on January 31, 2022 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 2, 2023, the Reporting Person was granted phantom shares on January 31, 2023 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

These phantom shares vest in equal installments on each of the first three anniversaries of the award.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

These phantom shares vest in equal installments on each of the first three anniversaries of the award.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

These phantom shares vest in equal installments on each of the first three anniversaries of the award.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 2, 2023, the Reporting Person was granted phantom shares on January 31, 2023 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 2, 2023, the Reporting Person was granted phantom shares on January 31, 2023 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 2, 2022, the Reporting Person was granted phantom shares on January 31, 2022 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 2, 2022, the Reporting Person was granted phantom shares on January 31, 2022 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 2, 2023, the Reporting Person was granted phantom shares on January 31, 2023 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

As previously reported on a Form 4 dated February 2, 2022, the Reporting Person was granted phantom shares on January 31, 2022 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 2, 2023, the Reporting Person was granted phantom shares on January 31, 2023 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 2, 2023, the Reporting Person was granted phantom shares on January 31, 2023 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

As previously reported on a Form 4 dated February 2, 2022, the Reporting Person was granted phantom shares on January 31, 2022 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 2, 2023, the Reporting Person was granted phantom shares on January 31, 2023 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 2, 2023, the Reporting Person was granted phantom shares on January 31, 2023 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

As previously reported on a Form 4 dated February 2, 2022, the Reporting Person was granted phantom shares on January 31, 2022 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 2, 2023, the Reporting Person was granted phantom shares on January 31, 2023 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 2, 2022, the Reporting Person was granted phantom shares on January 31, 2022 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 2, 2021, the Reporting Person was granted phantom shares on January 29, 2021 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 2, 2023, the Reporting Person was granted phantom shares on January 31, 2023 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

As previously reported on a Form 4 dated February 2, 2022, the Reporting Person was granted phantom shares on January 31, 2022 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 2, 2023, the Reporting Person was granted phantom shares on January 31, 2023 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 2, 2023, the Reporting Person was granted phantom shares on January 31, 2023 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

As previously reported on a Form 4 dated February 2, 2022, the Reporting Person was granted phantom shares on January 31, 2022 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 2, 2023, the Reporting Person was granted phantom shares on January 31, 2023 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

As previously reported on a Form 4 dated February 2, 2022, the Reporting Person was granted phantom shares on January 31, 2022 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

As previously reported on a Form 4 dated February 2, 2021, the Reporting Person was granted phantom shares on January 29, 2021 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 2, 2023, the Reporting Person was granted phantom shares on January 31, 2023 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 2, 2023, the Reporting Person was granted phantom shares on January 31, 2023 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 2, 2023, the Reporting Person was granted phantom shares on January 31, 2023 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 2, 2023, the Reporting Person was granted phantom shares on January 31, 2023 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

As previously reported on a Form 4 dated February 2, 2022, the Reporting Person was granted phantom shares on January 31, 2022 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

As previously reported on a Form 4 dated February 2, 2021, the Reporting Person was granted phantom shares on January 29, 2021 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 2, 2022, the Reporting Person was granted phantom shares on January 31, 2022 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 2, 2022, the Reporting Person was granted phantom shares on January 31, 2022 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 2, 2022, the Reporting Person was granted phantom shares on January 31, 2022 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

These phantom shares vest in equal installments on each of the first three anniversaries of the award.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 2, 2022, the Reporting Person was granted phantom shares on January 31, 2022 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.

A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

As previously reported on a Form 4 dated February 2, 2022, the Reporting Person was granted phantom shares on January 31, 2022 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.