AIG, Chubb Beat Zayo on Coverage for Post-M&A Shareholder Deal
Zayo Group Holdings Inc. lost a Delaware court bid to require AIG, Chubb, and Arch Capital to cover a $27 million settlement paid by its former CEO in shareholder litigation tied to a take-private deal. The judge said the payment was an effective increase in consideration barred by policy “bump-up” exclusions, and granted insurers summary judgment on Zayo’s bad faith claim.
How this was made

The 30-second read
Why it matters
The Delaware judge ruled the settlement was an “effective increase in consideration” barred by “bump-up” exclusions and granted summary judgment on Zayo’s bad faith claim due to lack of breach of contract.
Market read
This is a concrete, insurer-specific legal coverage outcome that reduces the likelihood of insurers paying the disputed settlement under the cited policy exclusions.
What to watch
The article does not state each insurer’s prior reserve level, policy limits, or whether appeals or related claims could reverse or expand exposure.
Background
Zayo Group faced shareholder litigation over a take-private transaction; its former CEO paid a $27 million settlement, and Zayo sought insurance coverage from AIG, Chubb, and Arch Capital units.
Ticker impact
Delaware judge ruled AIG units need not cover a $27 million Zayo settlement, citing “bump-up” insurance exclusions and rejecting bad faith.
Likely limited near-term impact unless AIG has material, ongoing similar claims; focus is on legal overhang rather than operations.
The article is a specific litigation coverage decision, but it does not provide AIG’s materiality, reserves, or broader settlement terms beyond the $27 million figure.
Chubb won summary judgment and coverage was denied for a $27 million Zayo settlement, with the judge citing policy “bump-up” exclusions.
Modest to negligible stock impact; legal coverage outcomes are typically incremental unless large relative to capital or guidance.
The decision is concrete and favorable, but the article does not quantify Chubb’s exposure versus financial statements or indicate a broader pattern of losses.
Arch Capital’s units were also denied coverage for Zayo’s $27 million settlement, with the court finding the payment barred by “bump-up” exclusions.
Likely limited immediate market reaction; effect depends on whether this claim is material to ACGL’s underwriting results.
The ruling is specific and favorable, but the article lacks exposure sizing, reserve changes, or guidance implications.
Market effects
Highlights how “bump-up” exclusions can sharply limit insurer liability in M&A-related shareholder litigation, potentially informing underwriting and claims reserving.
US legal outcome may influence US-focused specialty insurance claims handling.
Primarily US litigation and insurance coverage, with limited direct global market spillover.
Counterpoint
Even favorable coverage rulings may not translate into performance if the insurers had already expected denial or if reserves were immaterial.
Key entities
- companyZayo Group Holdings Inc.
Communications infrastructure company that sought insurance coverage for a $27 million shareholder litigation settlement.
- companyAmerican International Group Inc.
Insurer whose units were denied coverage by the Delaware Superior Court ruling.
- companyChubb Ltd.
Insurer whose units were denied coverage; summary judgment granted.
- companyArch Capital Group Ltd.
Insurer whose units were denied coverage under the same “bump-up” exclusion rationale.
- personJudge Paul R. Wallace
Delaware Superior Court judge issuing the coverage and bad faith rulings.

