Costain’s Tony Quinlan to Join Harworth Board as Independent Director

An update from Costain ( (GB:COST) ) is now available.

Costain has announced that its Non-Executive Director Tony Quinlan will join the board of Harworth Group as an Independent Non-Executive Director from 1 June 2026. In his new role, Quinlan will sit on Harworth’s Audit and Remuneration Committees, while continuing as Senior Independent Director, Audit and Risk Committee Chair and member of all board committees at Costain.

The appointment underscores the cross-boardroom influence of Costain’s senior leadership within the UK infrastructure and property sectors. Stakeholders may view Quinlan’s expanded portfolio as enhancing governance expertise and industry connectivity, although it also adds to his external commitments alongside his existing responsibilities at Costain.

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 is an infrastructure solutions company focused on delivering connected, sustainable projects across the transport, water, energy and defence markets. The business aims to provide predictable, best-in-class solutions that support a more resilient, decarbonised UK and improve people’s lives through modern, integrated infrastructure.

Average Trading Volume: 1,628,436

Technical Sentiment Signal: Buy

Current Market Cap: £539.3M

See more insights into COST stock on TipRanks’ Stock Analysis page.