Director/PDMR Shareholding

1.

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

a)

Name

Sir Andrew Witty

b)

Position/status

CEO

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

ISIN: GB0009252882

b)

Nature of the transaction

Acquisition of ordinary shares under the Company's ShareReward Plan

c)

Price(s) and volume(s)

d)

Aggregated information

Aggregated volume Price

16 Ordinary shares

£16.7975

e)

Date of the transaction

2016-08-09

f)

Place of the transaction

London Stock Exchange (XLON)

1.

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

a)

Name

Mr R G Connor

b)

Position/status

President, Global Manufacturing & Supply

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

ISIN: GB0009252882 

b)

Nature of the transaction

Acquisition of ordinary shares under the Company's ShareReward Plan

c)

Price(s) and volume(s)

d)

Aggregated information

Aggregated volume Price

16 Ordinary shares

£16.7975

e)

Date of the transaction

2016-08-09

f)

Place of the transaction

London Stock Exchange (XLON)

1.

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

a)

Name

Mr S Dingemans

b)

Position/status

CFO

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

ISIN: GB0009252882

b)

Nature of the transaction

Acquisition of ordinary shares under the Company's ShareReward Plan

c)

Price(s) and volume(s)

d)

Aggregated information

Aggregated volume Price

16 Ordinary shares

£16.7975

e)

Date of the transaction

2016-08-09

f)

Place of the transaction

London Stock Exchange (XLON)

1.

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

a)

Name

Mr N Hirons

b)

Position/status

SVP, Global Ethics & Compliance

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

ISIN: GB0009252882

b)

Nature of the transaction

Acquisition of ordinary shares under the Company's ShareReward Plan

c)

Price(s) and volume(s)

d)

Aggregated information

Aggregated volume Price

16 Ordinary shares

£16.7975

e)

Date of the transaction

2016-08-09

f)

Place of the transaction

London Stock Exchange (XLON)

1.

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

a)

Name

Mr S A Hussain

b)

Position/status

President, Global Pharmaceuticals

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

ISIN: GB0009252882

b)

Nature of the transaction

Acquisition of ordinary shares under the Company's ShareReward Plan

c)

Price(s) and volume(s)

d)

Aggregated information

Aggregated volume Price

14 Ordinary shares

£16.7975

e)

Date of the transaction

2016-08-09

f)

Place of the transaction

London Stock Exchange (XLON)

1.

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

a)

Name

Mr D S Redfern

b)

Position/status

Chief Strategy Officer

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

ISIN: GB0009252882

b)

Nature of the transaction

Acquisition of ordinary shares under the Company's ShareReward Plan

c)

Price(s) and volume(s)

d)

Aggregated information

Aggregated volume Price

16 Ordinary shares

£16.7975

e)

Date of the transaction

2016-08-09

f)

Place of the transaction

London Stock Exchange (XLON)

1.

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

a)

Name

Ms C Thomas

b)

Position/status

SVP, HR

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

ISIN: GB0009252882

b)

Nature of the transaction

Acquisition of ordinary shares under the Company's ShareReward Plan

c)

Price(s) and volume(s)

d)

Aggregated information

Aggregated volume Price

16 Ordinary shares

£16.7975

e)

Date of the transaction

2016-08-09

f)

Place of the transaction

London Stock Exchange (XLON)

1.

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

a)

Name

Mr P C Thomson

b)

Position/status

SVP, Communications & Government Affairs

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

ISIN: GB0009252882

b)

Nature of the transaction

Acquisition of ordinary shares under the Company's ShareReward Plan

c)

Price(s) and volume(s)

d)

Aggregated information

Aggregated volume Price

16 Ordinary shares

£16.7975

e)

Date of the transaction

2016-08-09

f)

Place of the transaction

London Stock Exchange (XLON)

1.

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

a)

Name

Dr P J T Vallance

b)

Position/status

President, Pharmaceuticals R&D

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

ISIN: GB0009252882 

b)

Nature of the transaction

Acquisition of ordinary shares under the Company's ShareReward Plan

c)

Price(s) and volume(s)

d)

Aggregated information

Aggregated volume Price

14 Ordinary shares

£16.7975

e)

Date of the transaction

2016-08-09

f)

Place of the transaction

London Stock Exchange (XLON)

1.

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

a)

Name

Ms E Walmsley

b)

Position/status

CEO, GSK Consumer Healthcare

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

ISIN: GB0009252882

b)

Nature of the transaction

Acquisition of ordinary shares under the Company's ShareReward Plan

c)

Price(s) and volume(s)

d)

Aggregated information

Aggregated volume Price

16 Ordinary shares

£16.7975

e)

Date of the transaction

2016-08-09

f)

Place of the transaction

London Stock Exchange (XLON)

1.

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

a)

Name

Mrs V A Whyte

b)

Position/status

Company Secretary

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

ISIN: GB0009252882

b)

Nature of the transaction

Acquisition of ordinary shares under the Company's ShareReward Plan 

c)

Price(s) and volume(s)

d)

Aggregated information

Aggregated volume Price

16 Ordinary shares

£16.7975

e)

Date of the transaction

2016-08-09

f)

Place of the transaction

London Stock Exchange (XLON)