Director/PDMR Shareholding

1.

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

a)

Name

Sir Philip Hampton

b)

Position/status

Non-Executive Chairman

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

Acquisition of notional Ordinary Shares under the share allocation arrangements for Non-Executive Directors for the period of service from 1 April 2019 to 30 June 2019.

c)

Price(s) and volume(s)

Price(s)

Volume(s)

£16.54

2,645.103

d)

Aggregated information

n/a (single transaction)

Aggregated volume Price

e)

Date of the transaction

2019-07-24

f)

Place of the transaction

n/a

1.

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

a)

Name

Mr Vindi Banga

b)

Position/status

Senior Independent Non-Executive Director

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

Acquisition of notional Ordinary Shares under the share allocation arrangements for Non-Executive Directors for the period of service from 1 April 2019 to 30 June 2019.

c)

Price(s) and volume(s)

Price(s)

Volume(s)

£16.54

547.914

d)

Aggregated information

n/a (single transaction)

Aggregated volume Price

e)

Date of the transaction

2019-07-24

f)

Place of the transaction

n/a

1.

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

a)

Name

Dr Vivienne Cox

b)

Position/status

Independent Non-Executive Director

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

Acquisition of notional Ordinary Shares under the share allocation arrangements for Non-Executive Directors for the period of service from 1 April 2019 to 30 June 2019.

c)

Price(s) and volume(s)

Price(s)

Volume(s)

£16.54

434.553

d)

Aggregated information

n/a (single transaction)

Aggregated volume Price

e)

Date of the transaction

2019-07-24

f)

Place of the transaction

n/a

1.

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

a)

Name

Ms Lynn Elsenhans

b)

Position/status

Independent Non-Executive Director

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

American Depositary Shares ('ADSs')

ISIN: US37733W1053

b)

Nature of the transaction

Acquisition of notional ADSs under the share allocation arrangements for Non-Executive Directors for the period of service from 1 April 2019 to 30 June 2019.

c)

Price(s) and volume(s)

Price(s)

Volume(s)

$41.14

1,202.621

d)

Aggregated information

n/a (single transaction)

Aggregated volume Price

e)

Date of the transaction

2019-07-24

f)

Place of the transaction

n/a

1.

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

a)

Name

Dr Laurie Glimcher

b)

Position/status

Independent Non-Executive Director

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

American Depositary Shares ('ADSs')

ISIN: US37733W1053

b)

Nature of the transaction

Acquisition of notional ADSs under the share allocation arrangements for Non-Executive Directors for the period of service from 1 April 2019 to 30 June 2019.

c)

Price(s) and volume(s)

Price(s)

Volume(s)

$41.14

1,336.245

d)

Aggregated information

n/a (single transaction)

Aggregated volume Price

e)

Date of the transaction

2019-07-24

f)

Place of the transaction

n/a

1.

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

a)

Name

Dr Jesse Goodman

b)

Position/status

Independent Non-Executive Director

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

American Depositary Shares ('ADSs')

ISIN: US37733W1053

b)

Nature of the transaction

Acquisition of notional ADSs under the share allocation arrangements for Non-Executive Directors for the period of service from 1 April 2019 to 30 June 2019.

c)

Price(s) and volume(s)

Price(s)

Volume(s)

$41.14

403.177

d)

Aggregated information

n/a (single transaction)

Aggregated volume Price

e)

Date of the transaction

2019-07-24

f)

Place of the transaction

n/a

1.

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

a)

Name

Ms Judy Lewent

b)

Position/status

Independent Non-Executive Director

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

American Depositary Shares ('ADSs')

ISIN: US37733W1053

b)

Nature of the transaction

Acquisition of notional ADSs under the share allocation arrangements for Non-Executive Directors for the period of service from 1 April 2019 to 30 June 2019.

c)

Price(s) and volume(s)

Price(s)

Volume(s)

$41.14

449.255

d)

Aggregated information

n/a (single transaction)

Aggregated volume Price

e)

Date of the transaction

2019-07-24

f)

Place of the transaction

n/a

1.

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

a)

Name

Mr Urs Rohner

b)

Position/status

Independent Non-Executive Director

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

Acquisition of notional Ordinary Shares under the share allocation arrangements for Non-Executive Directors for the period of service from 1 April 2019 to 30 June 2019.

c)

Price(s) and volume(s)

Price(s)

Volume(s)

£16.54

547.914

d)

Aggregated information

n/a (single transaction)

Aggregated volume Price

e)

Date of the transaction

2019-07-24

f)

Place of the transaction

n/a