Cyberstarts, the Israeli venture capital firm best known for its early investment in the cybersecurity company Wiz, has raised $300 million to buy shares from employees of the firm’s portfolio companies, co-founder Gili Raanan said.Raanan, a former partner at Sequoia Capital, said the goal is to reward long-tenured employees with reliable and recurring opportunities to cash out vested shares. It’s part of a broader effort by Raanan to rethink the venture capital model as startups stay private lo...