Costain Cancels 158,101 Shares Under Ongoing Buyback Programme

The latest update is out from Costain ( (GB:COST) ).

Costain Group PLC has continued to execute its recently launched share buyback programme, repurchasing a total of 158,101 ordinary shares between 10 March and 17 March 2026 through broker Panmure Liberum at volume-weighted average prices around 195 pence. The company plans to cancel all the shares acquired under the programme, which will reduce the total number of shares in issue to 266,556,794 and marginally enhance earnings per share for remaining investors.

The buyback transactions were executed across multiple trading venues, including the London Stock Exchange and various alternative platforms, at prices ranging from 191.60 pence to 197.00 pence per share. By shrinking its share capital rather than holding repurchased stock in treasury, Costain is signalling confidence in its balance sheet and future prospects while directly returning surplus capital to shareholders.

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 company that delivers infrastructure solutions, primarily serving the transportation, energy, water and defence sectors. The group focuses on complex projects for public and private sector clients, positioning itself as a key contractor in major national infrastructure programmes.

Average Trading Volume: 1,411,554

Technical Sentiment Signal: Buy

Current Market Cap: £514.8M

Learn more about COST stock on TipRanks’ Stock Analysis page.