Costain Non-Executive Director Increases Stake With Share Purchase

Costain ( (GB:COST) ) has provided an announcement.

Costain Group PLC reported that non-executive director Steve Mogford purchased 10,655 ordinary shares in the company on 5 May 2026 at £1.863 per share. Following this transaction, Mogford’s total holding stands at 10,655 shares, representing approximately 0.004% of Costain’s issued share capital.

The director share purchase modestly increases insider ownership and may be interpreted by investors as a signal of confidence in Costain’s prospects. The transaction was carried out on the London Stock Exchange and disclosed in line with UK Market Abuse Regulation requirements for dealings by persons discharging managerial responsibilities.

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 delivery. It operates across transportation, energy, water, and defence sectors, providing complex project solutions and related services to public and private sector clients.

Average Trading Volume: 1,629,152

Technical Sentiment Signal: Buy

Current Market Cap: £501.1M

For detailed information about COST stock, go to TipRanks’ Stock Analysis page.