Costain Group PLC
13 October 2025
Costain Group PLC ('Costain' or the 'Company')
Notification of Transactions by Director
and Person Discharging Managerial Responsibilities ('PDMR')
On 10 October 2025 Costain granted options over 3,071,313 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 19 September 2025.
Each option has an exercise price per Ordinary Share of £1.02*. 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 2028 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 2025 Sharesave invite |
| Alex Vaughan | 3,578 |
| Helen Willis | 3,578 |
* 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) |
| |||||
| d) | Aggregated information - Aggregated volume - Price | N/A | |||||
| e) | Date of the transaction | 10 OCTOBER 2025 | |||||
| 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) |
| |||||
| d) | Aggregated information - Aggregated volume - Price | N/A | |||||
| e) | Date of the transaction | 10 OCTOBER 2025 | |||||
| f) | Place of the transaction | OUTSIDE A TRADING VENUE | |||||
| Investors and analysts Matt Jones, Costain | +44 (0) 7860 922341
|
| Financial media - Headland | |
| Andy Rivett-Carnac | +44 (0) 7968 997365 |
| Charlie Twigg | +44 (0) 7946 494568 |
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