BlackRock MuniYield Pennsylvania Quality Fund (the Fund), formerly BlackRock MuniYield Pennsylvania Insured Fund, is a non-diversified, closed-end management investment company. The Fund's investment objective is to provide shareholders with as high a level of current income exempt from federal and Pennsylvania income taxes. The Fund seeks to achieve its investment objective by investing at least 80% of its assets in municipal obligations exempt from federal income taxes and Pennsylvania income taxes. The Fund invests primarily in long-term municipal obligations that are investment grade quality at the time of investment and at least 80% of its assets in municipal obligations. The Fund may invest directly in such securities or through the use of derivatives. The Fund's investment advisor is BlackRock Advisors, LLC, an indirect wholly owned subsidiary of BlackRock, Inc. BlackRock Investment Management, LLC (BIM), an affiliate of BlackRock Advisors, LLC serves as the Fund's sub-advisor.