SentinelOne was set to acquire Orca Security for $2.5 billion, but the proposed cybersecurity acquisition fell apart when SentinelOne's stock plummeted in recent weeks, according to Calcalist.Orca Security has raised multiple rounds of funding and launched a partner program for MSPs in August 2021. The company's valuation was $1.8 billion as of October 2021.It's unclear just how close SentinelOne actually was to buying Orca Security. Rather than M&A, discussions between the two cybersecurity software companies may have involved partnership talk, and Orca is focused on pursuing an IPO (initial public offering), the Calcalist report noted.