US private equity firm KKR & Co Inc (<a href="https://www.nyse.com/quote/XNYS:KKR" target="_blank">NYSE:KKR</a>) has sealed a definitive agreement to acquire a 25% stake in Enilive, the biofuels subsidiary of Italian oil and gas major Eni SpA (<a href="https://www.borsaitaliana.it/borsa/azioni/scheda/IT0003132476.html?lang=en" target="_blank">BIT:ENI</a>), for EUR 2.938 billion (USD 3.163bn).