Ownership stake · Activity not yet classified
TierZero 2025 seed investment
Transaction overview
Reported completed
Exact closing date not established.
In a July 20, 2026 article, Accel reported that it had led TierZero’s seed round in 2025. The source does not provide the round amount, ownership percentage or an exact investment date. Accel Management Co. L.L.C. is attributed in a sponsor-manager role under the official collective Accel definition. The separately reported acquisition of TierZero by Cognition does not establish Accel’s disposition or rollover terms.
Selected source-supported transactions; coverage is incomplete. Announcements do not establish completion or that a deal is still pending. Sponsor activity and operating-business transactions are distinct from adviser acquisitions. Unclassified activity is excluded from adviser-only counts.
Source evidence
- Cognition Acquires TierZero: Building the Autonomous Engineering Agent ↗
Accel · Published Jul 20, 2026
The July 20, 2026 article expressly states that Accel led TierZero’s seed round last year, supporting a 2025 investment without an exact investment day. The later Cognition acquisition does not establish Accel exit terms.
- Season 1 ↗
Accel · Publication date not stated
The official legal footer defines Accel Management Co. L.L.C. and affiliates collectively as Accel and refers to managed funds. This supports limited sponsor-manager identity, not direct adviser balance-sheet ownership.