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
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

Sonsini Peter W. 		2. Issuer Name and Ticker or Trading Symbol

Adaptimmune Therapeutics PLC [ ADAP ] 		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)

2855 SAND HILL ROAD 		3. Date of Earliest Transaction (MM/DD/YYYY)

9/7/2018
(Street)

MENLO PARK, CA 94025
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3) 		2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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
Ordinary Shares with a nominal value of 0.001 GBP per share   (1) 9/7/2018     P    3000000   (1) A $1.6667   (2) 82978668   (1) I   See Note 3   (3)
Ordinary Shares with a nominal value of 0.001 GBP per share   (4) 9/7/2018     P    12000000   (4) A $1.6667   (2) 12000000   (4) I   See Note 5   (5)

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3) 		2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. 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 7. Title and Amount of Securities Underlying Derivative Security
(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

Explanation of Responses:
(1)  The ordinary shares whose purchase is reported on this line are represented by American Depositary Shares ("ADSs") and are held of record by New Enterprise Associates 14, L.P. ("NEA 14"). NEA 14 holds these ordinary shares in the form of ADSs. Each ADS represents six ordinary shares of Adaptimmune Therapeutics plc. The ordinary shares reported in column 5 are represented by ADSs.
(2)  The price reported in Column 4 of $1.6667 per ordinary share is a price derived from the price of $10.00 per ADS, divided by six.
(3)  The Reporting Person is a director of NEA 14 GP, LTD, which is the sole general partner of NEA Partners 14, L.P. ("NEA Partners 14"). NEA Partners 14 is the sole general partner of NEA 14, which is the direct beneficial owner of the securities. The Reporting Person disclaims beneficial ownership, within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended, or otherwise of such portion of the securities held by NEA 14 in which the Reporting Person has no pecuniary interest.
(4)  The ordinary shares whose purchase is reported on this line are represented by American Depositary Shares ("ADSs") and are held of record by New Enterprise Associates 16, L.P. ("NEA 16"). NEA 16 holds these ordinary shares in the form of ADSs. Each ADS represents six ordinary shares of Adaptimmune Therapeutics plc. The ordinary shares reported in column 5 are represented by ADSs.
(5)  The Reporting Person is a manager of NEA 16 GP, LLC, ("NEA 16 GP") which is the sole general partner of NEA Partners 16, L.P. ("NEA Partners 16"). NEA Partners 16 is the sole general partner of NEA 16, which is the direct beneficial owner of the securities. The Reporting Person disclaims beneficial ownership within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended, or otherwise of such portion of the securities held by NEA 16 in which the Reporting Person has no pecuniary interest.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Sonsini Peter W.
2855 SAND HILL ROAD
MENLO PARK, CA 94025
X


Signatures
/s/ Sasha Keough, attorney-in-fact 9/10/2018
** Signature of Reporting Person Date


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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
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