SEC Form DEFA14A filed by Blackrock MuniYield New York Quality Fund Inc.

Your Vote Matters BlackRock MuniYield New York Quality Fund, Inc. (NYSE: MYN) BlackRock is fighting for you. Vote now and make your voice heard: Vote today! Vote today: ? How to vote: Defend your fund, Phone FOR the BlackRock nominees save your income. Online WHITE proxy card HOW TO VOTE: Use the WHITE proxy card, and vote FOR your experienced nominees. 1. To Elect the Class II Board Member Nominees. AGAINST ABSTAIN 1.1 J. Phillip Holloman 1.2 Arthur P. Steinmetz ! IMPORTANT: Do not return any gold proxy card from Saba BlackRock is delivering real value: Your Fund outperformed Sustainable distributions grew, peers in 20231 more than peers1 Distribution enhancements (May 2023 – May 2024)1 Total shareholder returns (2023)1 +40.3% 9.78% 7.00% MYN +29.9% MYN Peer median Peers Actions taken by your Board and Meaningful fee waivers increase management MYN’s discount team to NAV have narrowed your return on investment. BlackRock As recently announced as May 2024, further fee Discount narrowing 2 waivers to maximize your tax-25.5% exempt income3 Since takeover, investors in Saba-Discount 13.3% 9.9% managed CEFs have seen to NAV2 ! management fees increase 12/31/2022 5/24/2024 1 Bloomberg as of 5/24/2024; Notes: Peer set includes MHN, BNY, ENX, VTN, NRK, NAN, PNF, PNI, and PYN; Total shareholder return on price annualized for periods longer than 1 year (assumes dividends are reinvested); Distribution growth over the past year 2 12/31/2022—5/24/2024: Morningstar/BlackRock data as of 5/24/2024 3 BlackRock Press Release (5/20/2024)

The truth about Saba Setting the record straight Saba has made numerous unsubstantiated claims about BlackRock, your Fund, and your Board—but they do not add up. Myth Reality Saba claims that Saba has chosen to use its vast resources to buy large stakes its actions are in in closed-end funds (CEF), engage in costly proxy fights, and the best interest of force actions that provide Saba with a quick profit for CEF shareholders themselves at your expense. Myth Reality Saba claims BlackRock CEFs have delivered consistent long-term value BlackRock CEFs over time, generating $3.6 billion in gains in 2023 alone while aren’t delivering paying shareholders $3.1 billion per year via dividends4. We results for investors have also repurchased $1.3 billion in shares, generating over $200 million in gains5. Myth Reality Saba claims to be a BlackRock has a 35+ year track record of delivering long-term better CEF manager value for CEF shareholders. than BlackRock At the funds Saba has taken over (BRW, SABA), shareholders are now exposed to riskier strategies, leaving them with a fund that no longer serves their original goals, as well as higher management fees. Saba’s CEF track is marked by failure and underperformance6: BRW Total Shareholder Return6 BRW Morningstar US CEF Bank Loans BlackRock Bank Loans Funds Median 13.4% Since takeover (6/4/2021 – 18.0% 5/24/2024) 30.6% 4 Annualized estimate based on June 2024 dividends for BlackRock closed-end funds 5 BlackRock. Since inception of the funds’ repurchase programs to 4/30/2024. Date of inception of BCAT, ECAT, BIGZ, BMEZ and BSTZ repurchase programs is 11/19/2021. Date of inception of BFZ, BNY, MHN, MPA and MYN repurchase programs is 11/15/2018 6 Bloomberg as of 5/24/2024; Total shareholder return on price (assumes dividends are reinvested)

Vote today. Make your voice heard, and save your fund and your investment. This is no time for taking chances. We need all shareholders to vote on the enclosed WHITE proxy card today to preserve YOUR Fund: AGAINST ABSTAIN 1. To Elect the Class II Board Member Nominees. 1.1 J. Phillip Holloman 1.2 Arthur P. Steinmetz How do I vote? Vote online Vote by phone Vote by mail Using the website provided By calling the toll-free By completing and on YOUR enclosed WHITE number on YOUR enclosed returning YOUR enclosed proxy card and following WHITE proxy card and WHITE card in the the simple instructions following the simple postage paid envelope instructions provided ! Do NOT send back any proxy card you may receive from Saba If you have already sent back the proxy card received from Saba, you can still change your vote by promptly voting on the WHITE proxy card, which will replace the proxy card you previously completed. If you have any questions about the proposal to be voted, please feel free to contact Georgeson LLC (“Georgeson”), toll free at 1-866-529-0466. Important information about the Fund This material is not an advertisement and is intended for existing shareholder use only. This document and the information contained herein relates solely to BlackRock MuniYield New York Quality Fund, Inc. (MYN). The information contained herein does not relate to, and is not relevant to, any other fund or product sponsored or distributed by BlackRock or any of its affiliates. This document is not an offer to sell any securities and is not a solicitation of an offer to buy any securities. Common shares for the closed-end fund identified above are only available for purchase and sale at current market price on a stock exchange. A closed-end fund’s dividend yield, market price and NAV will fluctuate with market conditions. The information for this Fund is provided for informational purposes only and does not constitute a solicitation of an offer to buy or sell Fund shares. Performance results reflect past performance and are no guarantee of future results. Current performance may be lower or higher than the performance data quoted. All returns assume reinvestment of all dividends. The market value and net asset value (NAV) of a fund’s shares will fluctuate with market conditions. Closed-end funds may trade at a premium to NAV but often trade at a discount. © 2024 BlackRock, Inc. or its affiliates. All Rights Reserved. BLACKROCK is a trademark of BlackRock, Inc., or its affiliates. All other trademarks are those of their respective owners. June 2024 | BlackRock MuniYield New York Quality Fund, Inc. (MYN) Not FDIC Insured May Lose Value No Bank Guarantee MYN_2024_FL6