13G Filing: Matrix Capital Management and Adaptimmune Therapeutics PLC – ADR (ADAP)

Page 2 of 8 – SEC Filing

1

NAMES OF REPORTING PERSONS

Matrix Capital Management Company LP

2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

(a) ¨

(b) ¨

3 SEC USE ONLY
4

CITIZENSHIP OR PLACE OF ORGANIZATION

Delaware

NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING
PERSON WITH
5

SOLE VOTING POWER

– 0 –

6

SHARED VOTING POWER

72,261,066

7

SOLE DISPOSITIVE POWER

– 0 –

8

SHARED DISPOSITIVE POWER

72,261,066

9

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

72,261,066

10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES ¨
11

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

12.9%

12

TYPE OF REPORTING PERSON

IA, PN

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