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 OF SECURITIES 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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(Print or Type Responses)

1. Name and Address of Reporting Person * Bertrand William C JR   2. Issuer Name and Ticker or Trading Symbol Adaptimmune Therapeutics PLC [ADAP] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Chief Operating Officer (Last) (First) (Middle) 21729 BRINK MEADOW LANE 3. Date of Earliest Transaction (Month/Day/Year) 01/04/2019 (Street) GERMANTOWN, MD 20876 4. If Amendment, Date Original Filed(Month/Day/Year) 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 (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 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

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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 (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

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 (Month/Day/Year)

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

Option to purchase Ordinary Shares

$ 0.89 (1)

01/04/2019

A

1,006,224

(2)

01/04/2029

Ordinary Shares

1,006,224

$ 0

1,006,224

D

Option to purchase Ordinary Shares

$ 0.0013 (3)

01/04/2019

A

224,724

(4)

(5)

Ordinary Shares

224,724

$ 0

224,724

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Bertrand William C JR 21729 BRINK MEADOW LANE GERMANTOWN, MD 20876			Chief Operating Officer

Signatures

/s/ William Charles Bertrand		01/08/2019
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	The exercise price was converted from GBP0.70 based on an exchange rate of $U.S. 1.26332 - GBP1.00. The actual exercise price will be the pounds sterling amount.
(2)	Exercisable as to 251,556 Ordinary Shares on January 4, 2020 and will be exercisable as to the remainder in monthly installments of 20,958 Ordinary Shares on the fourth of each month from February 4, 2020 through December 4, 2022 and 21,138 Ordinary Shares on January 4, 2023.
(3)	The exercise price was converted from GBP0.001, being the nominal value of an ordinary share, based on an exchange rate of $U.S. 1.26332 - GBP1.00. The actual exercise price will be the pounds sterling amount.
(4)	Exercisable as to 56,178 Ordinary Shares on January 4, 2020 and will be exercisable as to the remainder in annual installments of 56,178 Ordinary Shares on January 4, 2021 and January 4, 2022 and 56,190 Ordinary Shares on January 4, 2023.
(5)	The expiration date of each annual installment of ordinary shares is March 15 of the calendar year following the year in which that installment becomes exercisable.

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