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

a) Names

Mark Dorman

Alex Smith

2. Reason for the notification

a) Position/status

CEO

CFO

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

Performance share award under the Long Term Incentive Plan ("LTIP") granted at 375p per share. The awards will vest three years after grant date, subject to the performance condititions being met, based on EPS, TSR and strategic elements, to be set out in the 2019 Annual Report.

c) Price(s) and volume(s)

Names

Mark Dorman

Alex Smith

Volume(s)

193,562

143,550

d) Aggregated information

- Aggregated volume

- Price

N/A

e) Date of the transaction

05/02/2020

f) Place of the transaction

London Stock Exchange