Top startup acquisitions · Cybersecurity

Top Cybersecurity startup acquisitions in October 2026

We tracked 4 startup exits in October 2026, 1 of them acquihires. 2 disclosed a price, worth $1.3bn in total. The biggest was IonQ buying Elisity for $1.3bn, ahead of Tiny and Oso at $1.3m.

All Cybersecurity startup acquisitions →

#DateAcquirer → StartupSectorLocationPriceSize
112 OctIonQ → ElisityIonQ agrees to buy zero-trust security startup Elisity in all-stock deal worth up to $1.3 billionCybersecuritySan Jose, United States$1.3bn$1bn+
27 OctTiny → OsoTiny buys Oso Cloud's assets for C$1.9 million as Oso's founder and team join TemporalCybersecurityNew York, United States$1.3m< $50m
313 OctAnthropic → Opaque SystemsAnthropic strikes acquihire deal for confidential-computing startup Opaque SystemsCybersecurityUndisclosedUndisclosed
413 OctWorkday → C1Workday agrees to buy C1.ai, formerly ConductorOne, to govern access for people and AI agentsCybersecuritySan Francisco, United StatesUndisclosedUndisclosed