Director/PDMR Shareholding

1.

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

a)

Name

Ms V 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 ('Ordinary Shares')

ISIN: GB0009252882

b)

Nature of the transaction

Transfer of 10,726 Ordinary Shares between accounts for nil consideration.

c)

Price(s) and volume(s)

Price(s)

Volume(s)

£0.00

10,726

d)

Aggregated information

N/A (single transaction)

Aggregated volume Price

e)

Date of the transaction

2021-02-16

f)

Place of the transaction

N/A

1.

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

a)

Name

Ms V 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 ('Ordinary Shares')

ISIN: GB0009252882

b)

Nature of the transaction

Transfer of 10,870 Ordinary Shares to spouse for nil consideration.

c)

Price(s) and volume(s)

Price(s)

Volume(s)

£0.00

10,870

d)

Aggregated information

N/A (single transaction)

Aggregated volume Price

e)

Date of the transaction

2021-02-18

f)

Place of the transaction

N/A

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

a)

Name

Mr I Whyte

b)

Position/status

PCA of Ms V Whyte (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 ('Ordinary Shares')

ISIN: GB0009252882

b)

Nature of the transaction

Receipt of 10,870 Ordinary Shares from spouse for nil consideration.

c)

Price(s) and volume(s)

Price(s)

Volume(s)

£0.00

10,870

d)

Aggregated information

N/A (single transaction)

Aggregated volume Price

e)

Date of the transaction

2021-02-18

f)

Place of the transaction

N/A