Sec Form 4 Filing - Powers Linda F @ NORTHWEST BIOTHERAPEUTICS INC - 2020-04-30

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 Powers Linda F 2. Issuer Name and Ticker or Trading Symbol NORTHWEST BIOTHERAPEUTICS INC [ NWBO] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director X __ 10% Owner X __ Officer (give title below) _____ Other (specify below) President and CEO (Last) (First) (Middle) C/O NORTHWEST BIOTHERAPEUTICS, INC., 4800 MONTGOMERY LANE, SUITE 800 3. Date of Earliest Transaction (MM/DD/YY) 04/30/2020 (Street) BETHESDA, MD20814 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ 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

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 Warrants $ 0.22 04/30/2020 H( 2 ) 29,411,760 05/02/2018 05/02/2020 Common Stock, par value $0.001 29,411,760 $ 0 0 D Warrants $ 0.22 04/30/2020 J( 3 ) 29,411 ,760 11/01/2020 05/01/2023( 1 ) Common Stock, par value $0.001 29,411,760 ( 1 ) 29,411,760 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Powers Linda F C/O NORTHWEST BIOTHERAPEUTICS, INC. 4800 MONTGOMERY LANE, SUITE 800 BETHESDA, MD20814 X X President and CEO Signatures /s/ Linda F. Powers 05/01/2020 Signature of Reporting Person Date

Explanation of Responses:

( 1 )This portion of existing warrants held by Ms. Powers was extended in consideration for suspension of these warrants making them unexercisable until Nov. 1, 2020, and for suspension of other warrants held by Ms. Powers making those unexercisable until Nov. 1, 2020 as well. These extended warrants will have an exercise period of 2-1/2 years after the suspension period. ( 2 )Extension of an existing warrant is deemed to be a cancellation and re-issuance. H is the transaction code which covers cancellation of securities. ( 3 )J is the transaction code for "other acquisitions". It covers the deemed issuance of replacement warrants.

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).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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