Director/PDMR Shareholding

1.

Details of PDMR/person closely associated with them ('PCA')

a)

Name

Mr D Jackson

b)

Position/status

PCA of Ms S Jackson (SVP, Global Communications and CEO Office)

c)

Initial notification/

amendment

Initial notification

2.

Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor

a)

Name

GlaxoSmithKline plc

b)

LEI

5493000HZTVUYLO1D793

3.

Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transaction(s) has been conducted

a)

Description of the financial instrument

Ordinary shares of 25 pence each ('Ordinary Shares')

ISIN: GB0009252882

b)

Nature of the transaction

Award of Ordinary Shares under the Company's Share Value Plan

c)

Price(s) and volume(s)

Price(s)

Volume(s)

£17.434

6,330

d)

Aggregated information

N/A

Aggregated volume Price

e)

Date of the transaction

2019-09-03

f)

Place of the transaction

London Stock Exchange (XLON)