Pump.fun MEV Lawsuit Whistleblower Leak (2025–2026)
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Summary
A confidential informant who resurfaced in September 2025 allegedly supplied plaintiffs' counsel in a U.S. class-action lawsuit with more than 5,000 private chat logs said to document coordination between Pump.fun, Solana Labs, and Jito Labs personnel around maximal extractable value (MEV) practices on the Pump.fun memecoin platform. A U.S. District Court judge allowed the logs to be added to an amended complaint in December 2025. The underlying messages have not been made public, Pump.fun and Jito have disputed the characterization and moved to dismiss, and a separate, unrelated March 2026 leak of internal Telegram chats by a former Pump.fun developer convicted of a 2024 hack did not corroborate the MEV allegations.
Connected Entities
1 entityNo connected entities recorded yet — this investigation is not currently linked to any other page in the index.
Timeline(9 events)
May 2024
Alleged Pump.fun bonding-curve exploit by former developer Jarett Dunn, draining an estimated $1.9–2 million in SOL and meme coins; Dunn is arrested in London shortly afterward.
HTXJuly 2025
Underlying MEV class-action lawsuit against Pump.fun, Solana Labs, the Solana Foundation and Jito Labs is filed in the Southern District of New York.
DL NewsAugust 2025
Jarett Dunn signs documents admitting guilt to fraud-related charges over the 2024 exploit.
HTXSeptember 2025
Jito Labs, the Jito Foundation, and their executives are dropped from the MEV lawsuit without prejudice; around the same period, a confidential informant said to have "reappeared" allegedly supplies plaintiffs with the chat-log archive later described as exceeding 5,000 messages.
DL NewsOctober 2025
Dunn attempts to withdraw his guilty plea; his legal representation withdraws.
Our Crypto TalkDecember 2025
Judge Colleen McMahon approves plaintiff Michael Okafor's request to file an amended complaint incorporating the leaked chat-log evidence.
DL NewsDecember 2025
UK court sentences Jarett Dunn to six years in prison for the 2024 Pump.fun exploit.
HTXDecember 2025
Crypto trade press (Cointelegraph, Cryptonews, Unchained) report on the amended complaint and the more-than-5,000-message leak; Pump.fun, Jito, and allied counsel dispute coordination claims and move to dismiss.
Cointelegraph3 March 2026
Jarett Dunn publicly releases internal Telegram chats and his Pump.fun employment contract, citing whistleblower safety concerns; the material does not corroborate the separate MEV insider-trading allegations.
Our Crypto TalkDecision Log
- #1publishNot recorded (failed)10/7/2026, 8:07:17 PMhash 7t96wamewchorN64BN8T2UWcvpdwgcyK74GFDb6Do7TR
model: claude-code-investigator
generated: 10/7/2026, 8:07:13 PM
last updated: 10/7/2026, 8:07:17 PM
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