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Costain ( (GB:COST) ) has provided an announcement.
Costain Group PLC has continued executing its previously announced share buyback programme, repurchasing 266,835 ordinary shares between 6 and 12 May 2026 on the London Stock Exchange at volume-weighted average prices around 195 pence per share. The company intends to cancel all purchased shares and holds no shares in treasury, leaving 267,645,679 ordinary shares in issue after cancellation, which will modestly reduce the share count and slightly enhance earnings per share for investors.
In aggregate, Costain has now bought back 2,069,216 shares for cancellation under the programme, with trades executed across multiple venues including BATE, XLON, CHIX, and TRQX. The ongoing buyback underscores management’s capital allocation strategy and signals confidence in the group’s financial position, while incrementally improving capital returns to remaining shareholders through a tighter equity base.
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 U.K.-based engineering and construction company focused on infrastructure projects. It provides design, consultancy, and delivery services across transportation, energy, water, and other complex infrastructure markets, primarily serving public sector clients and large corporates.
Average Trading Volume: 1,629,253
Technical Sentiment Signal: Buy
Current Market Cap: £522.7M
For detailed information about COST stock, go to TipRanks’ Stock Analysis page.