Sec Form 4 Filing - Access Industries Holdings LLC @ Neon Therapeutics, Inc. - 2020-03-23

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 Access Industries Holdings LLC 2. Issuer Name and Ticker or Trading Symbol Neon Therapeutics, Inc. [ NTGN] 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) 40 WEST 57TH ST, 28TH FL, 3. Date of Earliest Transaction (MM/DD/YY) 03/23/2020 (Street) NEW YORK, NY10019 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 03/24/2020 S 117,400 D $ 2.2022 ( 1 ) 1,896,176 D ( 2 ) Common Stock 03/24/2020 S 84,286 D $ 2.1923 ( 3 ) 856,304 I ( 4 ) By corporation Common Stock 03/23/2020 S 50,358 D $ 2.1741 ( 5 ) 940,590 I ( 4 ) By corporation

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 Access Industries Holdings LLC 40 WEST 57TH ST, 28TH FL NEW YORK, NY10019 X Clal Biotechnology Industries Ltd. 3 AZRIELI CENTER TRIANGLE TOWER 45 FLOOR TEL AVIV, L367023 See Remarks ACCESS INDUSTRIES, LLC C/O ACCESS INDUSTRIES, INC. 40 WEST 57TH STREET, 28TH FLOOR NEW YORK, NY10019 Affiliate of 10% Owner ACCESS INDUSTRIES MANAGEMENT, LLC C/O ACCESS INDUSTRIES, INC. 40 WEST 57TH STREET, 28TH FLOOR NEW YORK, NY10019 Affiliate of 10% Owner Blavatnik Len C/O ACCESS INDUSTRIES, INC. 40 WEST 57TH STREET, 28TH FLOOR NEW YORK, NY10019 Affiliate of 10% Owner Signatures /s/ Alejandro Moreno for Access Industries Holdings LLC 03/25/2020 Signature of Reporting Person Date /s/ Ofer Gonen (CEO) and Assaf Segal (CFO) for Clal Biotechnology Industries Ltd. 03/25/2020 Signature of Reporting Person Date /s/ Alejandro Moreno for Access Industries, LLC 03/25/2020 Signature of Reporting Person Date /s/ Alejandro Moreno for Access Industries Management, LLC 03/25/2020 Signature of Reporting Person Date /s/ Alejandro Moreno, as Attorney-in-Fact for Mr. Blavatnik 03/25/2020 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.20 to $2.25, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4. ( 2 )The securities reported are held directly by Access Industries Holdings LLC ("AIH") and may be deemed to be beneficially owned by Access Industries, LLC ("Access LLC"), Access Industries Management, LLC ("Management LLC") and Len Blavatnik, because Access LLC holds a majority of the outstanding voting interests in AIH, Management LLC controls Access LLC and AIH, and Len Blavatnik controls Management LLC and Access LLC. Each of the reporting persons (other than AIH) disclaims beneficial ownership of these securities, except to the extent of its or his pecuniary interest therein, if any, and this Form shall not be construed as an admission that any such reporting person (other than AIH) is the beneficial owner of such securities for any purpose. ( 3 )The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.19 to $2.21, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4. ( 4 )The securities reported are held directly by Clal Biotechnology Industries Ltd. ("CBI"). AIH, Access LLC, Management LLC and Len Blavatnik may be deemed to beneficially own the securities held directly by CBI because Clal Industries Ltd. ("CI") is the controlling shareholder of CBI, AIH controls CI, Access LLC holds a majority of the outstanding interests in AIH, Management LLC controls Access LLC, and Len Blavatnik controls Management LLC and Access LLC. Each of the reporting persons (other than CBI) disclaims beneficial ownership of these securities, except to the extent of its or his pecuniary interest therein, if any, and this Form shall not be construed as an admission that any such reporting person (other than CBI) is the beneficial owner of such securities for any purpose. ( 5 )The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.16 to $2.19, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

Remarks: As a result of CBI's relationships with the other Reporting Persons, it is possible that CBI may be deemed a member of a "group", within the meaning of Rule 13d-5(b)(1) under the Securities Exchange Act of 1934, as amended (the "Act"), with such other Reporting Persons. CBI is making this filing as a precautionary matter and this filing shall not be deemed an admission that CBI is a member of a group or is subject to the reporting requirements of Section 16 of the Act.

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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