0001104659-20-047482 SC 13D/A 2 20200416 20200416 EQUAL TALENT INVESTMENTS LTD FRANCES ANNE ELIZABETH RICHARD JILL MARIE FRANKLIN PETER STUART ALLENBY EDWARDS RAYMOND LONG SING TANG SEASON PIONEER INVESTMENTS LTD TRACY GIA YUNN TSOI Stealth BioTherapeutics Corp 0001696396 2834 000000000 E9 1231 SC 13D/A 34 005-90943 20796166 190 ELGIN AVENUE GEORGE TOWN GRAND CAYMAN E9 KY1-9005 617-600-6888 190 ELGIN AVENUE GEORGE TOWN GRAND CAYMAN E9 KY1-9005 Morningside Venture (I) Investments Ltd 0001770194 000000000 D8 1231 SC 13D/A THC MANAGEMENT SERVICES S.A.M. 2ND FLOOR LE PRINCE DE GALLES 3-5 AVENUE DE CITRON MONTE CARLO O9 98000 011 377 97 97 47 37 THC MANAGEMENT SERVICES S.A.M. 2ND FLOOR LE PRINCE DE GALLES 3-5 AVENUE DE CITRON MONTE CARLO O9 98000 SC 13D/A 1 a20-15830_1sc13da.htm SC 13D/A CUSIP No. 85788D100 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D/A Under the Securities Exchange Act of 1934 (Amendment No. 3)* Stealth BioTherapeutics Corp (Name of Issuer) Ordinary Shares, par value $0.0003 per share (Title of Class of Securities) 85788D100 (CUSIP Number) Morningside Venture (I) Investments Limited C/O THC Management Services S.A.M., 2nd Floor, Le Prince De Galles 3-5 Avenue DesCitronniers Monaco, MC 98000 011-377-97-97-47-37 with a copy to: Morningside Technology Advisory, LLC Attn: Stephanie O’Brien, Esq. 1188 Centre Street Newton Centre, MA 02459 (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) April 10, 2020 (Date of Event Which Requires Filing of this Statement) If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box. [ ] Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7 for other parties to whom copies are to be sent. * The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page. The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). -------------------------------------------------------------------------------- CUSIP No. 85788D100 (1) Names of Reporting Persons Morningside Venture (I) Investments Limited (2) Check the Appropriate Box if a Member of a Group (See Instructions) (a) [x] (b) [ ] (3) SEC Use Only (4) Source of Funds (See Instructions) WC (5) Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e) [ ] (6) Citizenship or Place of Organization British Virgin Islands (7) Sole Voting Power 0 Number of Shares (8) Shared Voting Power Beneficially 419,560,015 (1) Owned by Each (9) Sole Dispositive Power Reporting 0 Person With: (10) Shared Dispositive Power 419,560,015 (1) (11) Aggregate Amount Beneficially Owned by Each Reporting Person 419,560,015 (1) (12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions) [ ] (13) Percent of Class Represented by Amount in Row (11) 71.1% (2) (14) Type of Reporting Person (See Instructions) CO -------------------------------------------------------------------------------- (1) The Ordinary Shares beneficially owned may be exchanged into American Depositary Shares on a twelve-for-one basis. (2) Based on 436,720,810 Ordinary Shares outstanding as reported in the Issuer’s Annual Report on Form 20-F filed with the Securities and Exchange Commission (the “SEC”) on April 1, 2020 and (b) the shares issued to Morningside Venture (I) Investments Limited on April 10, 2020, as disclosed in the Issuer’s Form 6-K filed with the SEC on April 13, 2020. 2 -------------------------------------------------------------------------------- CUSIP No. 85788D100 (1) Names of Reporting Persons Frances Anne Elizabeth Richard (2) Check the Appropriate Box if a Member of a Group (See Instructions) (a) [x] (b) [ ] (3) SEC Use Only (4) Source of Funds (See Instructions) AF (5) Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e) [ ] (6) Citizenship or Place of Organization United Kingdom (7) Sole Voting Power 0 Number of Shares (8) Shared Voting Power Beneficially 419,560,015 (1) Owned by Each (9) Sole Dispositive Power Reporting 0 Person With: (10) Shared Dispositive Power 419,560,015 (1) (11) Aggregate Amount Beneficially Owned by Each Reporting Person 419,560,015 (1) (12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions) [ ] (13) Percent of Class Represented by Amount in Row (11) 71.1% (2) (14) Type of Reporting Person (See Instructions) IN -------------------------------------------------------------------------------- (1) The Ordinary Shares beneficially owned may be exchanged into American Depositary Shares on a twelve-for-one basis. (2) Based on 436,720,810 Ordinary Shares outstanding as reported in the Issuer’s Annual Report on Form 20-F filed with the SEC on April 1, 2020 and (b) the shares issued to Morningside Venture (I) Investments Limited on April 10, 2020, as disclosed in the Issuer’s Form 6-K filed with the SEC on April 13, 2020. 3 -------------------------------------------------------------------------------- CUSIP No. 85788D100 (1) Names of Reporting Persons Jill Marie Franklin (2) Check the Appropriate Box if a Member of a Group (See Instructions) (a) [x] (b) [ ] (3) SEC Use Only (4) Source of Funds (See Instructions) AF (5) Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e) [ ] (6) Citizenship or Place of Organization United Kingdom (7) Sole Voting Power 0 Number of Shares (8) Shared Voting Power Beneficially 419,560,015 (1) Owned by Each (9) Sole Dispositive Power Reporting 0 Person With: (10) Shared Dispositive Power 419,560,015 (1) (11) Aggregate Amount Beneficially Owned by Each Reporting Person 419,560,015 (1) (12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions) [ ] (13) Percent of Class Represented by Amount in Row (11) 71.1% (2) (14) Type of Reporting Person (See Instructions) IN -------------------------------------------------------------------------------- (1) The Ordinary Shares beneficially owned may be exchanged into American Depositary Shares on a twelve-for-one basis. (2) Based on 436,720,810 Ordinary Shares outstanding as reported in the Issuer’s Annual Report on Form 20-F filed with the SEC on April 1, 2020 and (b) the shares issued to Morningside Venture (I) Investments Limited on April 10, 2020, as disclosed in the Issuer’s Form 6-K filed with the SEC on April 13, 2020. 4 -------------------------------------------------------------------------------- CUSIP No. 85788D100 (1) Names of Reporting Persons Peter Stuart Allenby Edwards (2) Check the Appropriate Box if a Member of a Group (See Instructions) (a) [x] (b) [ ] (3) SEC Use Only (4) Source of Funds (See Instructions) AF (5) Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e) [ ] (6) Citizenship or Place of Organization United Kingdom (7) Sole Voting Power 0 Number of Shares (8) Shared Voting Power Beneficially 419,560,015 (1) Owned by Each (9) Sole Dispositive Power Reporting 0 Person With: (10) Shared Dispositive Power 419,560,015 (1) (11) Aggregate Amount Beneficially Owned by Each Reporting Person 419,560,015 (1) (12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions) [ ] (13) Percent of Class Represented by Amount in Row (11) 71.1% (2) (14) Type of Reporting Person (See Instructions) IN -------------------------------------------------------------------------------- (1) The Ordinary Shares beneficially owned may be exchanged into American Depositary Shares on a twelve-for-one basis. (2) Based on 436,720,810 Ordinary Shares outstanding as reported in the Issuer’s Annual Report on Form 20-F filed with the SEC on April 1, 2020 and (b) the shares issued to Morningside Venture (I) Investments Limited on April 10, 2020, as disclosed in the Issuer’s Form 6-K filed with the SEC on April 13, 2020. 5 -------------------------------------------------------------------------------- CUSIP No. 85788D100 (1) Names of Reporting Persons Raymond Long Sing Tang (2) Check the Appropriate Box if a Member of a Group (See Instructions) (a) [x] (b) [ ] (3) SEC Use Only (4) Source of Funds (See Instructions) AF (5) Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e) [ ] (6) Citizenship or Place of Organization United Kingdom (7) Sole Voting Power 0 Number of Shares (8) Shared Voting Power Beneficially 419,560,015 (1) Owned by Each (9) Sole Dispositive Power Reporting 0 Person With: (10) Shared Dispositive Power 419,560,015 (1) (11) Aggregate Amount Beneficially Owned by Each Reporting Person 419,560,015 (1) (12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions) [ ] (13) Percent of Class Represented by Amount in Row (11) 71.1% (2) (14) Type of Reporting Person (See Instructions) IN -------------------------------------------------------------------------------- (1) The Ordinary Shares beneficially owned may be exchanged into American Depositary Shares on a twelve-for-one basis. (2) Based on 436,720,810 Ordinary Shares outstanding as reported in the Issuer’s Annual Report on Form 20-F filed with the SEC on April 1, 2020 and (b) the shares issued to Morningside Venture (I) Investments Limited on April 10, 2020, as disclosed in the Issuer’s Form 6-K filed with the SEC on April 13, 2020. 6 -------------------------------------------------------------------------------- CUSIP No. 85788D100 (1) Names of Reporting Persons Equal Talent Investments Limited (2) Check the Appropriate Box if a Member of a Group (See Instructions) (a) [x] (b) [ ] (3) SEC Use Only (4) Source of Funds (See Instructions) WC (5) Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e) [ ] (6) Citizenship or Place of Organization British Virgin Islands (7) Sole Voting Power 19,533,720 (1) Number of Shares (8) Shared Voting Power Beneficially 0 Owned by Each (9) Sole Dispositive Power Reporting 19,533,720 (1) Person With: (10) Shared Dispositive Power 0 (11) Aggregate Amount Beneficially Owned by Each Reporting Person 19,533,720 (1) (12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions) [ ] (13) Percent of Class Represented by Amount in Row (11) 3.3% (2) (14) Type of Reporting Person (See Instructions) CO -------------------------------------------------------------------------------- (1) The Ordinary Shares beneficially owned may be exchanged into American Depositary Shares on a twelve-for-one basis. (2) Based on 436,720,810 Ordinary Shares outstanding as reported in the Issuer’s Annual Report on Form 20-F filed with the SEC on April 1, 2020 and (b) the shares issued to Morningside Venture (I) Investments Limited on April 10, 2020, as disclosed in the Issuer’s Form 6-K filed with the SEC on April 13, 2020. 7 -------------------------------------------------------------------------------- CUSIP No. 85788D100 (1) Names of Reporting Persons Season Pioneer Investments Limited (2) Check the Appropriate Box if a Member of a Group (See Instructions) (a) [x] (b) [ ] (3) SEC Use Only (4) Source of Funds (See Instructions) WC (5) Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e) [ ] (6) Citizenship or Place of Organization British Virgin Islands (7) Sole Voting Power 39,066,276 (1) Number of Shares (8) Shared Voting Power Beneficially 0 Owned by Each (9) Sole Dispositive Power Reporting 39,066,276 (1) Person With: (10) Shared Dispositive Power 0 (11) Aggregate Amount Beneficially Owned by Each Reporting Person 39,066,276 (1) (12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions) [ ] (13) Percent of Class Represented by Amount in Row (11) 6.6% (2) (14) Type of Reporting Person (See Instructions) CO -------------------------------------------------------------------------------- (1) The Ordinary Shares beneficially owned may be exchanged into American Depositary Shares on a twelve-for-one basis. (2) Based on 436,720,810 Ordinary Shares outstanding as reported in the Issuer’s Annual Report on Form 20-F filed with the SEC on April 1, 2020 and (b) the shares issued to Morningside Venture (I) Investments Limited on April 10, 2020, as disclosed in the Issuer’s Form 6-K filed with the SEC on April 13, 2020. 8 -------------------------------------------------------------------------------- CUSIP No. 85788D100 (1) Names of Reporting Persons Tracy Gia Yunn Tsoi (2) Check the Appropriate Box if a Member of a Group (See Instructions) (a) [x] (b) [ ] (3) SEC Use Only (4) Source of Funds (See Instructions) AF (5) Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e) [ ] (6) Citizenship or Place of Organization Australia (7) Sole Voting Power 58,599,996 (1) Number of Shares (8) Shared Voting Power Beneficially 0 Owned by Each (9) Sole Dispositive Power Reporting 58,599,996 (1) Person With: (10) Shared Dispositive Power 0 (11) Aggregate Amount Beneficially Owned by Each Reporting Person 58,599,996 (1) (12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions) [ ] (13) Percent of Class Represented by Amount in Row (11) 9.9% (2) (14) Type of Reporting Person (See Instructions) IN -------------------------------------------------------------------------------- (1) The Ordinary Shares beneficially owned may be exchanged into American Depositary Shares on a twelve-for-one basis. (2) Based on 436,720,810 Ordinary Shares outstanding as reported in the Issuer’s Annual Report on Form 20-F filed with the SEC on April 1, 2020 and (b) the shares issued to Morningside Venture (I) Investments Limited on April 10, 2020, as disclosed in the Issuer’s Form 6-K filed with the SEC on April 13, 2020. 9 -------------------------------------------------------------------------------- CUSIP No. 85788D100 Item 1. Security and Issuer. This Amendment No. 3 (this “Amendment”) to the statement on Schedule 13D amends the Schedule 13D filed with the SEC on February 28, 2019 (the “Original Schedule 13D”), which Original Schedule 13D was amended by Amendment No. 1 to the Original Schedule 13D filed on March 22, 2019 and Amendment No. 2 to the Original Schedule 13D filed on May 1, 2019 (“Amendment No. 1” and “Amendment No. 2”, respectively, and together with the Original Schedule 13D, the “Amended Filing”) and relates to the Reporting Persons’ (as defined in Item 2 below) beneficial ownership interest in the ordinary shares, par value $0.0003 per share (the “Ordinary Shares”), of Stealth BioTherapeutics Corp, a Cayman Islands company (the “Issuer”), which conducts its operations in the United States through Stealth BioTherapeutics, Inc., a Delaware corporation (“Stealth Delaware”). The address of the principal executive office of Stealth Delaware is 275 Grove Street, Suite 3-107, Newton, Massachusetts 02466. Information given in response to each item shall be deemed incorporated by reference in all other items, as applicable. Except as otherwise described herein, the information contained in the Amended Filing remains in effect. Capitalized terms used but not defined in this Amendment shall have the respective meanings set forth with respect thereto in the Amended Filing. Item 2. Identity and Background. No changes. (a) This statement is filed by: (i) Morningside Venture (I) Investments Limited, a British Virgin Islands exempted company (“MVIL”), with respect to the Ordinary Shares directly and beneficially owned by it; (ii) Frances Anne Elizabeth Richard, with respect to the Ordinary Shares beneficially owned by her as a result of her position as a director with MVIL; (iii) Jill Marie Franklin, with respect to the Ordinary Shares beneficially owned by her as a result of her position as a director with MVIL; (iv) Peter Stuart Allenby Edwards, with respect to the Ordinary Shares beneficially owned by him as a result of his position as a director with MVIL; (v) Raymond Long Sing Tang, with respect to the Ordinary Shares beneficially owned by him as a result of his position as a director with MVIL; (vi) Equal Talent Investments Limited, a British Virgin Islands exempted company (“ETIL”), with respect to the Ordinary Shares beneficially owned by it; (vii) Season Pioneer Investments Limited, a British Virgin Islands exempted company (“SPIL”), with respect to the Ordinary Shares beneficially owned by it; and (viii) Tracy Gia Yunn Tsoi, with respect to the Ordinary Shares beneficially owned by her as a result of her positions as a director with ETIL and as a director with SPIL. Each of the foregoing is referred to as a “Reporting Person” and collectively as the “Reporting Persons.” 10 -------------------------------------------------------------------------------- CUSIP No. 85788D100 Frances Anne Elizabeth Richard, Jill Marie Franklin, Peter Stuart Allenby Edwards and Raymond Long Sing Tang, are the directors of MVIL and share voting and dispositive power with respect to the securities held by MVIL. Ms. Richard, Ms. Franklin, Mr. Edwards and Mr. Tang each disclaim beneficial ownership of the securities owned directly by MVIL, except to the extent of her or his pecuniary interest therein. MVIL disclaims beneficial ownership of the securities owned directly by ETIL and SPIL. MVIL is ultimately wholly beneficially owned by a family trust established by Madam Chan Tan Ching Fen. Tracy Gia Yunn Tsoi is the sole director of ETIL and has sole voting and dispositive power with respect to the securities held by ETIL. Ms. Tsoi disclaims beneficial ownership of the securities owned directly by ETIL, except to the extent of her pecuniary interest therein. ETIL disclaims beneficial ownership of the securities owned directly by MVIL and SPIL. ETIL is ultimately wholly beneficially owned by a trust over which Peter Stuart Allenby Edwards has sole authority to remove the trustee. Tracy Gia Yunn Tsoi is the sole director of SPIL and has sole voting and dispositive power with respect to the securities held by SPIL. Ms. Tsoi disclaims beneficial ownership of the securities owned directly by SPIL, except to the extent of her pecuniary interest therein. SPIL disclaims beneficial ownership of the securities owned directly by MVIL and ETIL. SPIL is ultimately wholly beneficially owned by a trust over which Peter Stuart Allenby Edwards has sole authority to remove the trustee. (b) The business address of each of the Reporting Persons is: (i) With respect to MVIL, Ms. Richard, Ms. Franklin, Mr. Edwards and Mr. Tang: c/o THC Management Services S.A.M., 2nd Floor, Le Prince De Galles 3-5 Avenue Des Citronniers MC 98000, Monaco With copies to: Morningside Technology Advisory, LLC Attn: Stephanie O’Brien, Esq. 1188 Centre Street Newton Centre, MA 02459 Springfield Financial Advisory Limited Attn: Alice Li/Makim Ma 22nd Floor Hang Lung Centre 2-20 Paterson Street Causeway Bay, Hong Kong (ii) With respect to ETIL and Ms. Tsoi: c/o THC Management Services S.A.M., 2nd Floor, Le Prince De Galles 3-5 Avenue Des Citronniers 11 -------------------------------------------------------------------------------- CUSIP No. 85788D100 MC 98000, Monaco With copies to: Morningside Technology Advisory, LLC Attn: Stephanie O’Brien, Esq. 1188 Centre Street Newton Centre, MA 02459 Springfield Financial Advisory Limited Attn: Alice Li/Makim Ma 22nd Floor Hang Lung Centre 2-20 Paterson Street Causeway Bay, Hong Kong (iii) With respect to SPIL and Ms. Tsoi: c/o THC Management Services S.A.M., 2nd Floor, Le Prince De Galles 3-5 Avenue Des Citronniers MC 98000, Monaco With copies to: Morningside Technology Advisory, LLC Attn: Stephanie O’Brien, Esq. 1188 Centre Street Newton Centre, MA 02459 Springfield Financial Advisory Limited Attn: Alice Li/Makim Ma 22nd Floor Hang Lung Centre 2-20 Paterson Street Causeway Bay, Hong Kong (c) The present principal business of MVIL, Ms. Richard, Ms. Franklin, Mr. Edwards, Mr. Tang, ETIL, SPIL and Ms. Tsoi is the venture capital and private equity investment business. (d) No Reporting Person, during the last five years, has been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors). (e) No Reporting Person, during the last five years, has been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws. (f) Citizenship of the Reporting Persons is as set forth below: MVIL British Virgin Islands Ms. Richard United Kingdom Ms. Franklin United Kingdom 12 -------------------------------------------------------------------------------- CUSIP No. 85788D100 Mr. Edwards United Kingdom Mr. Tang United Kingdom ETIL British Virgin Islands SPIL British Virgin Islands Ms. Tsoi Australia Item 3. Source and Amount of Funds or Other Consideration. No changes, except as set forth below. On April 10, 2020, MVIL acquired 152,858,460 of the Issuer’s Ordinary Shares in a private placement from the Issuer for an aggregate purchase price of $20,000,000.91. Such shares were acquired with working capital. Item 4. Purpose of Transaction. No changes. Item 5. Interest in Securities of the Issuer. No changes except as described below. The aggregate percentage of Ordinary Shares reported beneficially owned by each person named herein is determined in accordance with SEC rules and is based upon 589,579,270 of the Issuer’s Ordinary Shares outstanding. The applicable SEC rules generally attribute beneficial ownership of securities to persons who possess sole or shared voting power or investment power with respect to those securities. A. Morningside Venture (I) Investments Limited (a) As of the date hereof, MVIL beneficially owns 419,560,015 Ordinary Shares, representing a beneficial ownership of approximately 71.1% of the Ordinary Shares. All such shares are directly held by MVIL. (b) 1. Sole power to vote or direct vote: -0- 2. Shared power to vote or direct vote: 419,560,015 3. Sole power to dispose or direct the disposition: -0- 4. Shared power to dispose or direct the disposition: 419,560,015 B. Frances Anne Elizabeth Richard (a) As of the date hereof, Ms. Richard beneficially owns 419,560,015 Ordinary Shares, representing a beneficial ownership of approximately 71.1% of the Ordinary Shares. All such shares are directly held by MVIL. (b) 1. Sole power to vote or direct vote: -0- 2. Shared power to vote or direct vote: 419,560,015 3. Sole power to dispose or direct the disposition: -0- 4. Shared power to dispose or direct the disposition: 419,560,015 13 -------------------------------------------------------------------------------- CUSIP No. 85788D100 C. Jill Marie Franklin (a) As of the date hereof, Ms. Franklin beneficially owns 419,560,015 Ordinary Shares, representing a beneficial ownership of approximately 71.1% of the Ordinary Shares. All such shares are directly held by MVIL. (b) 1. Sole power to vote or direct vote: -0- 2. Shared power to vote or direct vote: 419,560,015 3. Sole power to dispose or direct the disposition: -0- 4. Shared power to dispose or direct the disposition: 419,560,015 D. Peter Stuart Allenby Edwards (a) As of the date hereof, Mr. Edwards beneficially owns 419,560,015 Ordinary Shares, representing a beneficial ownership of approximately 71.1% of the Ordinary Shares. All such shares are directly held by MVIL. (b) 1. Sole power to vote or direct vote: -0- 2. Shared power to vote or direct vote: 419,560,015 3. Sole power to dispose or direct the disposition: -0- 4. Shared power to dispose or direct the disposition: 419,560,015 E. Raymond Long Sing Tang (a) As of the date hereof, Mr. Tang beneficially owns 419,560,015 Ordinary Shares, representing a beneficial ownership of approximately 71.1% of the Ordinary Shares. All such shares are directly held by MVIL. (b) 1. Sole power to vote or direct vote: -0- 2. Shared power to vote or direct vote: 419,560,015 3. Sole power to dispose or direct the disposition: -0- 4. Shared power to dispose or direct the disposition: 419,560,015 F. Equal Talent Investments Limited (a) As of the date hereof, ETIL holds 1,627,810 American Depositary Shares (“ADSs”), representing 19,533,720 Ordinary Shares and a beneficial ownership of approximately 3.3% of the Ordinary Shares. All such ADSs are directly held by ETIL. (b) 1. Sole power to vote or direct vote: 19,533,720 2. Shared power to vote or direct vote: -0- 3. Sole power to dispose or direct the disposition: 19,533,720 4. Shared power to dispose or direct the disposition: -0- 14 -------------------------------------------------------------------------------- CUSIP No. 85788D100 G. Season Pioneer Investments Limited (a) As of the date hereof, SPIL holds 3,255,523 ADSs, representing 39,066,276 Ordinary Shares and a beneficial ownership of approximately 6.6% of the Ordinary Shares. All such ADSs are directly held by SPIL. (b) 1. Sole power to vote or direct vote: 39,066,276 2. Shared power to vote or direct vote: -0- 3. Sole power to dispose or direct the disposition: 39,066,276 4. Shared power to dispose or direct the disposition: -0- H. Tracy Gia Yunn Tsoi (a) As of the date hereof, Ms. Tsoi beneficially owns 58,599,996 Ordinary Shares, representing a beneficial ownership of approximately 9.9% of the Ordinary Shares. 19,533,720 of such shares are beneficially owned by ETIL, which directly holds 1,627,810 ADSs and 39,066,276 of such shares are beneficially owned by SPIL, which directly holds 3,255,523 ADSs. (b) 1. Sole power to vote or direct vote: 58,599,996 2. Shared power to vote or direct vote: -0- 3. Sole power to dispose or direct the disposition: 58,599,996 4. Shared power to dispose or direct the disposition: -0- (c) See Item 3. (d) Not applicable. (e) Not applicable. Item 6. Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer. The lock-up agreement described in the Original Schedule 13D and entered into in connection with Issuer’s initial public offering has expired by its terms. Item 7. Material to be Filed as Exhibits. No changes except as described below. The following documents are filed as Exhibits to this statement: Exhibit Number Exhibit Description 99.1 Joint Filing Agreement 15 -------------------------------------------------------------------------------- CUSIP No. 85788D100 SIGNATURES After reasonable inquiry and to the best of my knowledge and belief, we certify that the information set forth in this statement is true, complete and correct. We also hereby agree to file this statement jointly pursuant to the Agreement listed on Exhibit 99.1 hereto. Dated: April 15, 2020 For and on behalf of MORNINGSIDE VENTURE (I) INVESTMENTS LIMITED By: /s/ Frances Anne Elizabeth Richard Frances Anne Elizabeth Richard, Director /s/ Frances Anne Elizabeth Richard Frances Anne Elizabeth Richard /s/ Jill Marie Franklin Jill Marie Franklin /s/ Peter Stuart Allenby Edwards Peter Stuart Allenby Edwards /s/ Raymond Long Sing Tang Raymond Long Sing Tang For and on behalf of EQUAL TALENT INVESTMENTS LIMITED By: /s/ Tracy Gia Yunn Tsoi Tracy Gia Yunn Tsoi, Director /s/ Tracy Gia Yunn Tsoi Tracy Gia Yunn Tsoi For and on behalf of SEASON PIONEER INVESTMENTS LIMITED By: /s/ Tracy Gia Yunn Tsoi Tracy Gia Yunn Tsoi, Director /s/ Tracy Gia Yunn Tsoi Tracy Gia Yunn Tsoi 16 -------------------------------------------------------------------------------- EX-99.1 2 a20-15830_1ex99d1.htm EX-99.1 EXHIBIT 99.1 JOINT FILING AGREEMENT The undersigned, being duly authorized thereunder, hereby execute this agreement as an exhibit to this Schedule 13D to evidence the agreement of the below-named parties, in accordance with the rules promulgated pursuant to the Securities Exchange Act of 1934, to file this Schedule jointly on behalf of each such party. For and on behalf of MORNINGSIDE VENTURE (I) INVESTMENTS LTD. By: /s/ Frances Anne Elizabeth Richard Frances Anne Elizabeth Richard, Director /s/ Frances Anne Elizabeth Richard Frances Anne Elizabeth Richard /s/ Jill Marie Franklin Jill Marie Franklin /s/ Peter Stuart Allenby Edwards Peter Stuart Allenby Edwards /s/ Raymond Long Sing Tang Raymond Long Sing Tang For and on behalf of EQUAL TALENT INVESTMENTS LIMITED By: /s/ Tracy Gia Yunn Tsoi Tracy Gia Yunn Tsoi, Director /s/ Tracy Gia Yunn Tsoi Tracy Gia Yunn Tsoi For and on behalf of SEASON PIONEER INVESTMENTS LIMITED By: /s/ Tracy Gia Yunn Tsoi Tracy Gia Yunn Tsoi, Director /s/ Tracy Gia Yunn Tsoi Tracy Gia Yunn Tsoi --------------------------------------------------------------------------------