Sec Form 4 Filing - Boundless Meadow Ltd @ Viela Bio, Inc. - 2021-03-13

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Boundless Meadow Ltd 2. Issuer Name and Ticker or Trading Symbol Viela Bio, Inc. [ VIE] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) SUITE 1518, TWO PACIFIC PLACE, 88 QUEENSWAY 3. Date of Earliest Transaction (MM/DD/YY) 03/13/2021 (Street) HONG KONG, K300000 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 03/13/2021 U( 1 ) 8,322,353 D $ 53 0 D ( 2 ) Common Stock 03/13/2021 U( 1 ) 300,000 D $ 53 0 I Held by Boyu Capital Opportunities Master Fund ( 3 )

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Boundless Meadow Ltd SUITE 1518, TWO PACIFIC PLACE 88 QUEENSWAY HONG KONG, K300000 X Boyu Capital Fund III, L.P. C/O MAPLES CORPORATE SERVICES LIMITED BOX 309, UGLAND HOUSE GRAND CAYMAN, E9KYL-1104 X Boyu Capital General Partner III, L.P. SUITE 1518, TWO PACIFIC PLACE 88 QUEENSWAY HONG KONG, K300000 X Boyu Capital General Partner III, Ltd. SUITE 1518, TWO PACIFIC PLACE 88 QUEENSWAY HONG KONG, K300000 X Boyu Capital Opportunities Master Fund CAYMAN CORPORATE CENTRE 27 HOSPITAL ROAD, GEORGE TOWN CAYMAN ISLANDS, E9KY1-9008 X Boyu Capital Investment Management Ltd SUITE 1501, TWO PACIFIC PLACE 88 QUEENSWAY HONG KONG, K300000 X Boyu Capital Group Holdings Ltd. SUITE 1518, TWO PACIFIC PLACE 88 QUEENSWAY HONG KONG, K300000 X XYXY Holdings Ltd. SUITE 1518, TWO PACIFIC PLACE 88 QUEENSWAY HONG KONG, K300000 X Tong Xiaomeng SUITE 1518, TWO PACIFIC PLACE 88 QUEENSWAY HONG KONG, K300000 X Signatures /s/ Xiao WANG, as Attorney-in-Fact 03/15/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Reflects disposition of Issuer common stock in connection with the consummation of the transactions contemplated by the Agreement and Plan of Merger, dated January 31, 2021 (the "Merger Agreement"), by and among the Issuer, Horizon Therapeutics USA, Inc., Teiripic Merger Sub, Inc. ("Purchaser"), and for certain purposes, Horizon Therapeutics plc, including the completion on March 13, 2021 of a tender offer to purchase all of the outstanding shares of Issuer common stock at a price of $53.00 per share in cash, without interest, less any required withholding taxes (the "Offer Price"), and the consummation of the merger (the "Merger") between the Issuer and Purchaser on March 15, 2021. Pursuant to the Merger Agreement, as of the effective time of the Merger, each outstanding share of Issuer common stock was cancelled in exchange for the right to receive an amount equal to the Offer Price. ( 2 )Boundless Meadow Limited is wholly owned by Boyu Capital Fund III, L.P. Boyu Capital General Partner III, L.P. is the general partner of Boyu Capital Fund III, L.P. Boyu Capital General Partner III, Ltd. is the general partner of Boyu Capital General Partner III, L.P. Boyu Capital Group Holdings Ltd. holds 100% of the outstanding shares of Boyu Capital General Partner III, Ltd. XYXY Holdings Ltd. is the controlling shareholder of Boyu Capital Group Holdings Ltd. Mr. Xiaomeng Tong holds 100% of the outstanding shares of XYXY Holdings Ltd. Each of Boyu Capital Fund III, L.P., Boyu Capital General Partner III, L.P., Boyu Capital General Partner III, Ltd., Boyu Capital Group Holdings Ltd., XYXY Holdings Ltd. and Mr. Xiaomeng Tong may be deemed to beneficially own the securities held by Boundless Meadow Limited and disclaims beneficial ownership of such securities except to the extent of its or his pecuniary interest therein, if any. ( 3 )The shares are directly held by Boyu Capital Opportunities Master Fund. Boyu Capital Investment Management Limited holds 100% of management shares of Boyu Capital Opportunities Master Fund. Boyu Capital Group Holdings Ltd. holds 100% of the voting shares of Boyu Capital Investment Management Limited. XYXY Holdings Ltd. is the controlling shareholder of Boyu Capital Group Holdings Ltd. Mr. Xiaomeng Tong holds 100% of the outstanding shares of XYXY Holdings Ltd. Each of Boyu Capital Investment Management Limited, Boyu Capital Group Holdings Ltd., XYXY Holdings Ltd. and Mr. Xiaomeng Tong may be deemed to beneficially own the securities held by Boyu Capital Opportunities Master Fund and disclaims beneficial ownership of such securities except to the extent of its or his pecuniary interest therein, if any.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

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