A billion-dollar reverse fee priced Cisco's antitrust risk

The record

Cisco agreed to acquire Splunk under a merger agreement dated 20 September 2023, and the deal closed on 18 March 2024. Splunk's merger proxy statement, filed with the SEC on 30 October 2023, discloses a termination fee of $1 billion payable by Splunk under specified circumstances and a larger reverse termination fee of $1.478 billion payable by Cisco if the deal failed under other specified circumstances, and states that closing required antitrust clearance in multiple jurisdictions, including the European Union. Splunk's closing Form 8-K, dated 18 March 2024, confirms the merger became effective that day, that each Splunk share converted into the right to receive $157.00 in cash, and that the aggregate equity value of the shares Cisco acquired was approximately $28 billion.

What the documents establish

The proxy's fee structure, agreed at signing, is the companies' own pre-built allocation of the risk that regulators would block the deal: Cisco's exposure to a failed closing, at $1.478 billion, is disclosed as meaningfully larger than Splunk's exposure to walking away for a competing bid, at $1 billion. That asymmetry is a fact the proxy states directly, not an inference; it does not by itself tell a reader what any specific regulator concluded, and no regulator's own clearance decision is opened or cited here. The closing 8-K then confirms the deal closed on the originally agreed $157.00 cash price roughly six months after signing, without a repriced or renegotiated term appearing in either filing.

The operating read

Editorially, a reverse termination fee sized well above the seller's own break fee is a proxy for how much regulatory risk the buyer itself believed it was taking on, priced into the contract rather than left to a later dispute. A founder negotiating an exit into a strategic acquirer in a concentrated industry should treat the relative size of these two fees as a more concrete signal of perceived antitrust exposure than either side's public statements about confidence in closing.

What to check before you decide

Before treating a strategic acquisition as low-risk because it eventually closed, check what the proxy disclosed before anyone knew the outcome.

• Is the reverse termination fee larger than the seller's own break fee, and if so, by how much relative to deal size?
• Does the proxy name specific jurisdictions where antitrust clearance is required, rather than referring only generically to regulatory approvals?
• Did the per-share price in the closing filing match the originally announced price, or was it renegotiated during the regulatory review period?

Splunk's own proxy and closing filings, read together, show a deal priced with real regulatory risk in mind that nonetheless closed on its original terms about six months after signing.