Form of Subscription Certificate

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+ Western Asset High Income Fund II Inc. Georgeson LLC Within USA, US territories & Canada 866-856-2826 MRA SAMPLE DESIGNATION(IF ANY) ADD 1 ADD 2 ADD 3 ADD 4 ADD 5 NNNNNNNNN ADD 6 C NNNNNN 1234567890 J N T Primary Subscription 12345678901234 Rights WESTERN ASSET HIGH INCOME FUND II INC. SUBSCRIPTION RIGHTS OFFERING THE SUBSCRIPTION RIGHTS OFFERING EXPIRES AT 5:00 P.M. (EASTERN TIME) ON FEBRUARY 26, 2024, (SUCH DATE AND TIME, THE “EXPIRATION DEADLINE”). Western Asset High Income Fund II Inc. (the “Company”) is distributing tradable subscription rights (the “Subscription Rights”) to stockholders holding shares of common stock held at the close of business on January 29, 2024 (the “Record Date”) as part of a capital increase by way of a rights offering (the “Rights Offering”). Stockholders will be allotted one Subscription Right for each existing share of common stock of the Company (a “Share”) held as of the Record Date. Stockholders may purchase 1 new Share for every 3 Subscription Rights held (the “Subscription Ratio”) at an estimated cash subscription price of $X.XX per new Share subscribed. Subscription Rights may be exercised only in integral multiples of 3. The Subscription Rights represented hereby include the Over-Subscription Privilege for Subscription Rights holders who are Record Date Stockholders. Under the Over-Subscription Privilege, additional shares of Common Stock may be purchased by Subscription Rights holders if such shares of Common Stock are available and the holder’s Subscription Rights have been exercised to the fullest extent possible. The Board of Directors has the right, in its absolute discretion, to eliminate the Over-Subscription Privilege with respect to the shares of Common Stock available for purchase pursuant to the Over-Subscription Privilege (the “Over-Subscription Shares”) if it considers doing so to be in the best interest of the Company. The Board of Directors may make such determination at any time, without prior notice to Subscription Rights holders or others, up to and including the fifth day following the Expiration Date. Payment of the cash subscription price by recipients of this form is to be made only via payment of the estimated subscription price of per Share registered. Please note that $X.XX is an estimated price only. The subscription price will be determined on February 26, 2024, the Expiration Date (unless extended) and could be higher or lower than the estimated subscription price depending on changes in the net asset value and market price of the shares of Common Stock. Any excess payment of the subscription price at the date of conversion will be refunded by Computershare Trust Company, N.A. (the “Rights Agent”). Stockholders who hold their Shares via physical share certificate or Direct Registration Statement (“DRS”) (together, “Registered Stockholders”) who choose to sell their Subscription Rights must return this form to the Rights Agent by 5:00 p.m. (Eastern time) on February 16, 2024. THE SUBSCRIPTION RIGHT IS TRANSFERABLE Registered Stockholders who choose to exercise their Subscription Rights (and their Over-Subscription Privilege) must return this form and payment to the Rights Agent by 5:00 p.m. (Eastern time) on the Expiration Deadline, provided that Registered Stockholders paying by personal check must return this form and payment to the Rights Agent by 5:00 p.m.(Eastern time) on February 26, 2024. If a Registered Stockholder does not validly exercise its Subscription Rights, including Subscription Rights in excess of the nearest integral multiple of the Subscription Ratio, (or its Over-Subscription Privilege) by submitting a properly completed form and payment by the Expiration Deadline, its Subscription Rights (and Over-Subscription Privilege) will expire and become null and void without payment of compensation. FOR REGISTERED STOCKHOLDERS REMITTING PAYMENT BY PERSONAL CHECK, ANY FAILURE WHATSOEVER, REGARDLESS OF THE CAUSE OR NATURE OF SUCH FAILURE, FOR THE RIGHTS AGENT TO RECEIVE YOUR PAYMENT OF THE SUBSCRIPTION PRICE FREE AND CLEAR BY 5:00 P.M. (EASTERN TIME) ON FEBRUARY 26, 2024 SHALL RESULT IN THE CANCELLATION OF YOUR EXERCISES OF SUBSCRIPTION RIGHTS, AND YOUR SUBSCRIPTION RIGHTS WILL EXPIRE NULL AND VOID WITHOUT PAYMENT OF ANY COMPENSATION THEREFOR. For a more complete description of the terms and conditions of the Rights Offering, please refer to the prospectus, including the prospectus supplement dated January 29, 2024, (the “Prospectus”), which is incorporated into this certificate (the “Rights Certificate”) by reference. Capitalized terms used but not defined herein have the meanings set forth in the Prospectus. Copies of the Prospectus are available free of charge by visiting EDGAR on the Securities and Exchange Commission’s website at http://www.sec.gov and through the Company’s Information Agent, Georgeson LLC, at 866-856-2826. The owner of this Rights Certificate is entitled to the number of Subscription Rights and is entitled to exercise the Subscription Rights for the number of Shares, shown on this Rights Certificate. METHOD OF EXERCISE OF SUBSCRIPTION RIGHTS IN ORDER TO EXERCISE YOUR SUBSCRIPTION RIGHTS, YOU MUST PROPERLY COMPLETE AND SIGN THIS RIGHTS CERTIFICATE ON THE BACK AND RETURN IT IN THE ENVELOPE PROVIDED TO THE RIGHTS AGENT, TOGETHER WITH PAYMENT IN FULL FOR AN AMOUNT EQUAL TO THE APPLICABLE SUBSCRIPTION PRICE MULTIPLIED BY THE TOTAL NUMBER OF SHARES OF THE COMPANY THAT YOU ARE REQUESTING TO PURCHASE TO THE RIGHTS AGENT BEFORE 5:00 P.M., EASTERN TIME, ON FEBRUARY 26, 2024. Holder ID COY Class Rights Qty Issued Rights Cert # 123456789 XXXX Subscription Rights XXX.XXXXXX 12345678 Signature of Owner and U.S. Person for Tax Certification Signature of Co-Owner (if more than one registered holder listed) Date (mm/dd/yyyy) 12345678 CLS XR T2 COYC