Director/PDMR Shareholding
Costain Group PLC
12 October 2026
Costain Group PLC ('Costain' or the 'Company')
Notification of Transactions by Director
and Person Discharging Managerial Responsibilities ('PDMR')
On 9 October 2026 Costain granted options over 2,510,060 ordinary shares of 1 pence each ('Ordinary Shares') under the Costain 2022 Sharesave Plan ('Sharesave') pursuant to an offer made to all eligible employees issued on 16 September 2026.
Each option has an exercise price per Ordinary Share of £1.82*. The number of Ordinary Shares subject to each option granted to a director or PDMR is set out below.
Subject to the rules of the Sharesave, the options will ordinarily vest on 1 December 2029 and be exercisable for a period of six months.
The relevant notifications set out below are provided in accordance with the requirements of the UK Market Abuse Regulation.
Director/PDMR
Number of Ordinary Shares subject to option under the 2026 Sharesave invite
Alex Vaughan
2,000
Helen Willis
2,000
* The exercise price was set in accordance with HM Revenue & Customs rules.
Notification of Dealing Form
1.
Details of the Person Discharging Managerial Responsibility ("PDMR") / person closely associated with them ("PCA")
a)
Name
ALEX VAUGHAN
2.
Reason for the notification
a)
Position /status
CHIEF EXECUTIVE OFFICER - PDMR
b)
Initial notification / amendment
INITIAL NOTIFICATION
3.
Details of the Issuer
a)
Name
COSTAIN GROUP PLC
b)
LEI code
213800PKIJBZ2EDTKC88
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 1 PENCE EACH
ISIN: GB00B64NSP76
b)
Nature of the transaction
Grant of option over Ordinary Shares under the Sharesave (price shown is option price payable upon exercise)
c)
Price(s) and volume(s)
Price(s)
Volume(s)
£1.82
2,000
d)
Aggregated information
- Aggregated volume
- Price
N/A
e)
Date of the transaction
09 OCTOBER 2026
f)
Place of the transaction
OUTSIDE A TRADING VENUE
Notification of Dealing Form
1.
Details of the Person Discharging Managerial Responsibility ("PDMR") / person closely associated with them ("PCA")
a)
Name
HELEN WILLIS
2.
Reason for the notification
a)
Position /status
CHIEF FINANCIAL OFFICER - PDMR
b)
Initial notification / amendment
INITIAL NOTIFICATION
3.
Details of the Issuer
a)
Name
COSTAIN GROUP PLC
b)
LEI code
213800PKIJBZ2EDTKC88
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 1 PENCE EACH
ISIN: GB00B64NSP76
b)
Nature of the transaction
Grant of option over Ordinary Shares under the Sharesave (price shown is option price payable upon exercise)
c)
Price(s) and volume(s)
Price(s)
Volume(s)
£1.82
2,000
d)
Aggregated information
- Aggregated volume
- Price
N/A
e)
Date of the transaction
09 OCTOBER 2026
f)
Place of the transaction
OUTSIDE A TRADING VENUE
Investors and analysts
Matt Jones, Costain
+44 (0) 7860 922341
Company Secretariat
Katie Mullins
Cyd Trumper
costaincosec@costain.com
+44 (0) 20 3922 0600
Financial media - Headland
Andy Rivett-Carnac
+44 (0) 7968 997365
Charlie Twigg
+44 (0) 7946 494568
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