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Costain ( (GB:COST) ) has shared an announcement.
Costain has continued to execute its previously announced share buyback programme, repurchasing 285,069 ordinary shares between 22 and 28 April 2026 on the London Stock Exchange at volume-weighted average prices around 180 pence. The company intends to cancel these shares, bringing total repurchases under the programme to 1,582,528 shares and reducing the number of shares in issue to 268,132,367, a move that marginally enhances earnings per share and signals confidence in its capital position.
The latest tranche of buybacks was executed through broker Panmure Liberum across multiple trading venues including BATE, XLON, CHIX and TRQX. By shrinking its share count rather than holding repurchased stock in treasury, Costain is opting for a more permanent capital reduction, which may support shareholder value and tighten the company’s free float over time.
The most recent analyst rating on (GB:COST) stock is a Hold with a £180.00 price target. To see the full list of analyst forecasts on Costain stock, see the GB:COST Stock Forecast page.
Spark’s Take on COST Stock
According to Spark, TipRanks’ AI Analyst, COST is a Outperform.
The score is driven primarily by improved financial stability and earnings quality (higher margins, low leverage, solid cash conversion), supported by strong technical uptrend signals. Valuation is reasonable but not deeply compelling, and the key risk tempering the score is the multi-year revenue contraction, which could limit future growth if it persists.
To see Spark’s full report on COST stock, click here.
More about Costain
Costain Group PLC is a UK-based engineering and construction solutions provider focused on infrastructure markets, including transportation, energy and water. The company delivers complex projects and services for public and private sector clients, positioning itself as a key player in the modernisation of critical national infrastructure.
Average Trading Volume: 1,606,123
Technical Sentiment Signal: Buy
Current Market Cap: £481M
See more data about COST stock on TipRanks’ Stock Analysis page.