PDMR

Position

Number of Shares awarded under the LTIP

Timo Lehne

Chief Executive Officer

159,164

Andrew Beach

Chief Financial Officer

116,066

LTIP targets

EPS

TSR vs. peer group

Strategic

ESG

2023-2023

Between 55.8 pence

(25% vesting) and 69.0

pence (100% vesting).

Between median (25%

vesting) and UQ (100%

vesting).

Adjusted operating

profit conversion ratio

between 20.0% (25%

vesting) and 23.5%

(100% vesting).

One single measure of carbon reduction across scope 1, 2 and 3 emissions.

Incremental progress against 2030

milestones

1) Scope 1 and 2 reduction: between threshold 35% (25% vesting) and 45% (100% vesting).

2) Scope 3 reduction: between

threshold 20% (25% vesting) and 25% (100% vesting).

LTIP weighting

50%

20%

20%

10% (5% for each measure)

1. Details of the person discharging managerial responsibilities / person closely associated

a) Names

Timo Lehne

2. Reason for the notification

a) Position/status

Director and Chief Executive Officer

b) Initial notification /Amendment

Initial notification

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

a) Name

SThree plc

b) LEI

2138003NEBX5VRP3EX50

4. 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 transactions have been conducted

a) Description of the financial instrument, type of instrument

Identification code

Ordinary shares of 1p

GB00B0KM9T71

b) Nature of the transaction

A performance share award granted under the SThree plc Long Term Incentive Plan

c) Price(s) and volume(s)

Price

£Nil

Volume(s)

159,164

d) Aggregated information

- Aggregated volume

- Price

159,164

£Nil

e) Date of the transaction

09/03/2023

f) Place of the transaction

Off market

1. Details of the person discharging managerial responsibilities / person closely associated

a) Names

Andrew Beach

2. Reason for the notification

a) Position/status

Director and Chief Financial Officer

b) Initial notification /Amendment

Initial notification

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

a) Name

SThree plc

b) LEI

2138003NEBX5VRP3EX50

4. 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 transactions have been conducted

a) Description of the financial instrument, type of instrument

Identification code

Ordinary shares of 1p

GB00B0KM9T71

b) Nature of the transaction

A performance share award granted under the SThree plc Long Term Incentive Plan

c) Price(s) and volume(s)

Price

£Nil

Volume(s)

116,066

d) Aggregated information

- Aggregated volume

- Price

116,066

£Nil

e) Date of the transaction

09/03/2023

f) Place of the transaction

Off market