"It was always going to be a difficult pitch to convince shareholders to relinquish their grip on Unilever, given the expectations for the company to keep churning out resilient growth in the years to come," George Salmon, Equity Analyst at Hargreaves Lansdown, told Reuters.
Shares of Unilever ended the day with a 6.7 per cent drop in London and closed 5.2 per cent weaker in Amsterdam.
US markets were closed for the Presidents Day holiday.
Europe's Stoxx 600 Index finished the session with a 0.2 per cent advance from the previous close.
"There's an acceleration in M&A activity given the improved economic outlook and while stocks still trade at low multiples," Benjamin Philippe, fund manager at Degroof Petercam Gestion in Paris, told Bloomberg. "It's spreading to a number of sectors including food, with Unilever in the spotlight as well as telecoms, where there's potential for further consolidation."
In Germany, the DAX Index rose 0.6 per cent, bolstered by gains in Deutsche Telekom shares after a Reuters report that Japan's SoftBank is prepared to give up control of Sprint to Deutsche Telekom's T-Mobile US to clinch a merger of the two US wireless carriers.
France's CAC 40 Index slipped 0.05 per cent.
The UK's FTSE 100 Index ended the day practically unchanged from the previous close, as a slide in Unilever shares offset gains in Royal Bank of Scotland Group.
Shares of Royal Bank of Scotland jumped 6.8 per cent after it scrapped plans to sell its Williams & Glyn banking unit.
Meanwhile, Snap Inc kicked off its first investor roadshow, looking to persuade London money managers to back its initial public offering, Reuters reported.
The owner of popular messaging app Snapchat aims to raise between US$19.5b and US$22.3b from listing on the New York Stock Exchange, after cutting its initial target of between US$20 and US$25b last week following investor feedback, according to Reuters.