Optimism Foundation projects 343M OP to enter circulation by April 2027

The Optimism Foundation is getting ready to release another 343 million OP tokens into circulation between May 2026 and April 2027. That’s a meaningful chunk of new supply hitting the market, roughly equivalent to 15% of OP’s current circulating supply of approximately 2.286 billion tokens.

The unlock math

OP’s total supply sits at around 4.295 billion tokens. The current circulating supply of about 2.286 billion represents roughly 53% of that total, meaning nearly half of all OP tokens are still locked or reserved.

The vesting schedule traces back to the token generation event in May 2022 and extends all the way through 2029.

The next scheduled unlock, set for October 11, 2026, amounts to approximately 4.47 million OP, which represents just 0.21% of the already-released supply.

The buyback counter-move

Season 9 proposals introduced in January 2026 included a mechanism to deploy 50% of Superchain revenue toward OP token buybacks.

The Superchain is Optimism’s broader vision of an interconnected network of Layer 2 chains all built on the OP Stack. Revenue generated from these chains flows back to the ecosystem, and now half of it gets redirected into buying OP off the market.

Retro Funding on pause

The Foundation has suspended its Retro Funding program for at least 12 months. Retro Funding was Optimism’s flagship public goods funding initiative, designed to retroactively reward builders who contributed value to the ecosystem. There are 775 million OP tokens reserved for this program.

The Isthmus network upgrade, implemented in July 2026, integrated key features from Ethereum’s Pectra upgrade into the OP Stack.

What this means for OP holders

The 343 million OP entering circulation represents a roughly 15% increase to the current supply.

Those 775 million reserved tokens represent roughly 18% of OP’s total supply. How and when they eventually get distributed will shape the token’s supply dynamics for years.

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