Coinbase’s ETH Treasury Supports Pollak’s Claim—but Not Every Selling Allegation

The Q2 2026 reporting separates Coinbase’s ETH into two economically different categories:

• Held for investment: 150,279 ETH, reported at a fair value of $235.7 million and a $340.6 million cost basis.
• Held for operations: 10,480 ETH, intended for business and operational purposes rather than treated as the company’s directional investment portfolio.

The distinction is important. The investment category is the closest public measure of Coinbase’s corporate ETH treasury. The operational category shows additional ETH on the company’s balance sheet, but it should not automatically be interpreted as a long-term bet on Ether’s price.

How much changed from year-end 2025?

Coinbase held 151,175 ETH for investment at the end of 2025 and 150,279 ETH on June 30, 2026—a decline of 896 ETH, or roughly 0.6%.

Over the same period, reporting based on Coinbase’s portfolio disclosures said the company’s Bitcoin holdings rose from 15,389 BTC to 17,311 BTC, an increase of 1,922 BTC, while its investment ETH balance edged lower. That combination is the basis for criticism that Coinbase was favoring Bitcoin over Ether.

The numbers support a more limited conclusion: Coinbase’s disclosed ETH investment position was modestly lower while its Bitcoin position increased. They do not show wholesale abandonment of ETH, nor do they establish that the increase in Bitcoin came directly from the sale of Base-generated ETH.

What the figures say about the Base sequencer controversy

Critics inferred from Coinbase’s portfolio changes that the company may have sold ETH generated by Base’s sequencer revenue and used the proceeds to acquire Bitcoin. That interpretation was presented as an inference from public financial disclosures, not as proof of specific transactions.

The reported treasury balance cuts against the broadest version of the “ETH dumping” narrative. A company still holding 150,279 ETH for investment has not exited its corporate ETH position. However, the balance cannot answer the narrower question of what happened to particular ETH received through Base. The public figures do not identify whether those receipts were:

• retained in the corporate treasury;
• sold to fund expenses or other investments;
• converted into Bitcoin;
• used in staking or other operations; or
• transferred for customer, OTC, or liquidity-management purposes.

That missing provenance is the central limitation of the argument. A net change in holdings cannot establish the origin or destination of every unit of ETH.

Why unstaking and Prime transfers remain ambiguous

Unstaking activity and transfers to Coinbase Prime are not, by themselves, evidence of liquidation. Such movements could reflect treasury rebalancing, staking administration, institutional or OTC facilitation, liquidity management, or a sale. Without wallet attribution, trade records, or a company disclosure linking a transfer to a specific purpose, the available evidence does not resolve the question.

This is also why exchange-wallet activity must be interpreted cautiously. Coinbase operates both a corporate investment portfolio and a large custody business. Assets held for customers, institutions, staking users, and ETF-related accounts are not equivalent to ETH owned by Coinbase itself. Coinbase has said it serves as custodian for more than 80% of U.S. Bitcoin and Ether ETF assets, illustrating the scale of custody that sits apart from its corporate treasury.

Pollak’s broader defense of Coinbase’s role in Ethereum

Pollak’s response was not limited to the size of Coinbase’s ETH balance. He also portrayed Coinbase as an active Ethereum participant and customer through Base and related infrastructure, rather than simply a company extracting value from the network. Coverage of his comments described him as pointing to Coinbase’s role in Ethereum’s ecosystem and development, while earlier material documents his support for Ethereum scaling work such as EIP-4844.

He also argued that the Ethereum community should stop moralizing about its customers and users, including people involved in trading, decentralized finance, and memecoins. That is an argument about how the ecosystem should treat commercial participants; it is not evidence that Coinbase never sells ETH or that every Base-derived receipt remains on the company’s balance sheet.

Jason Chaskin’s related defense makes a similar ecosystem-integration argument: Coinbase is simultaneously an ETH holder, a Base operator, a customer of Ethereum, a custodian, and an on-ramp for users and assets. Those roles demonstrate a broad relationship with Ethereum, but they do not substitute for a transparent policy showing how Coinbase handles sequencer revenue.

The defensible conclusion

Pollak’s statement has a credible, narrow basis: Coinbase disclosed approximately 150,000 ETH held for investment, and that balance remained almost unchanged between December 31, 2025 and June 30, 2026. The company also reported 10,480 ETH held for operations, while its Bitcoin investment holdings increased during the first half of 2026.

The evidence therefore supports three conclusions:

1. Coinbase remained a major disclosed corporate ETH holder outside the dedicated DAT category.
2. Its filings challenge the claim that it had broadly sold or abandoned its ETH treasury.
3. The filings do not prove what happened to specific Base sequencer receipts, unstaked ETH, or transfers to Coinbase Prime.

The right reading is consequently neither “Coinbase sold all its ETH” nor “Coinbase never sells ETH.” The public record establishes the size and persistence of its corporate position, while leaving the purpose of particular historical transactions unresolved.