Interim dividend
Amount
2p / share
Ex-dividend
17 Sep 2026
Record date
18 Sep 2026
Payment
23 Oct 2026
Source: issuer announcement, UK National Storage Mechanism · filed 13 Aug 2026
Costain Group
Costain Group's latest dividend of 2p per share went ex-dividend on 17 Sep 2026 and is due to be paid on 23 Oct 2026. Costain Group usually pays two dividends a year, in May and October. Every date below is taken from the company's own regulatory filings.
Data updated
Dividend calculator
Enter the shares you hold to see what each payment is worth. Every amount links to the announcement it came from.
Shares of Costain Group (COST). Every figure below is per share, exactly as announced, multiplied by this number.
Payments since 27 Oct 2023
| Dividend | Payment date | Shares held | Your payment |
|---|---|---|---|
| 2pInterim | 23 Oct 2026not yet paid | £20.00 | |
| 3.2pFinal | 26 May 2026 | £32.00 | |
| 1pInterim | 17 Oct 2025 | £10.00 | |
| 2pFinal | 29 May 2025 | £20.00 | |
| 0.4pInterim | 18 Oct 2024 | £4.00 | |
| 0.8pFinal | 28 May 2024 | £8.00 | |
| 0.4pInterim | 27 Oct 2023 | £4.00 |
Change any row to match what you held at the time — the number at the top fills them all. Shares bought on or after the ex-dividend date do not receive that payment.
Over the longer run: from FY2015 to FY2025 Costain Group’s dividend went 11p → 4.2p, so the income on an unchanged holding changed −61.8% — an average of −9.2% a year over 10 years. Past changes are not a guide to future ones. See every year.
What this assumes. That the number in each row is what you held when that dividend was paid, and that you did not reinvest.
Every per-share figure comes from Costain Group’s own announcements, filed under UK listing rules. This is general information, not investment advice.
Working out the tax? The dividend tax calculator takes a total and applies this year’s rates and allowance. To see the effect of buying more shares with each payment, try the reinvestment calculator, and to build a whole portfolio’s payment calendar use the dividend income calculator.