Grayscale Solana Trust ETF updates CoinDesk SOL index venues

Grayscale Solana Trust ETF reported that CoinDesk Indices, Inc., the index provider for its benchmark, has updated the trading venues used to calculate the CoinDesk SOL CCIXber Reference Rate.

Rhea-AI Filing Summary

Grayscale Solana Trust ETF reported that CoinDesk Indices, Inc., the index provider for its benchmark, has updated the trading venues used to calculate the CoinDesk SOL CCIXber Reference Rate. Effective November 18, 2025, the index provider removed the itBit SOL-U.S. Dollar trading pair from the index after itBit failed to meet the provider’s conditions for inclusion and did not add any new platforms in its scheduled monthly review.

The index for SOL-USD trading pairs now uses Bitfinex, Bitstamp by Robinhood, Bullish, Crypto.com, Gemini, Kraken, LMAX Digital, and OKX. For SOL-U.S. Dollar Coin (USDC) trading pairs, it uses Bitstamp, Bullish, Bybit, Kraken, and OKX. The index provider states it may change trading venues or index calculation methods at any time, including during scheduled monthly reviews.

8-K Event Classification

Item 8.01 — Other Events

1 item

Item 8.01 Other Events Other

Voluntary disclosure of events the company deems important to shareholders but not covered by other items.

FAQ

What did Grayscale Solana Trust ETF (GSOL) announce in this 8-K?

The Trust announced that its index provider, CoinDesk Indices, Inc., removed the itBit SOL-USD trading pair from the CoinDesk SOL CCIXber Reference Rate effective November 18, 2025, and did not add any new trading platforms in that monthly review.

Why was itBit removed from the CoinDesk SOL index used by GSOL?

itBit’s SOL-USD trading pair was removed because the trading platform failed to meet the index provider’s conditions for inclusion, as determined by CoinDesk Indices, Inc.

Which SOL-USD trading platforms are currently in the index for GSOL?

For SOL-USD trading pairs, the index now includes Bitfinex, Bitstamp by Robinhood, Bullish, Crypto.com, Gemini, Kraken, LMAX Digital, and OKX.

Which SOL-USDC trading platforms are currently in the index for GSOL?

For SOL-U.S. Dollar Coin (USDC) trading pairs, the index uses Bitstamp, Bullish, Bybit, Kraken, and OKX.

Can the CoinDesk SOL index for GSOL change its trading venues in the future?

Yes. The index provider states it may change the trading venues used to calculate the index price or otherwise change how the index price is calculated at any time, including during scheduled monthly reviews.

What index does Grayscale Solana Trust ETF use as its reference rate?

The Trust uses the CoinDesk SOL CCIXber Reference Rate as its index, which is calculated using SOL-USD and SOL-USDC trading pairs from selected digital asset trading platforms.

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Accepted by SEC EDGAR 11/21/2025 - 04:16 PM Learn about SEC filing dates

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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): November 18, 2025

Grayscale Solana Trust ETF

(Exact name of Registrant as Specified in Its Charter)

Delaware			001-42920	87-6771043
(State or Other Jurisdiction of Incorporation)			(Commission File Number)	(IRS Employer Identification No.)
c/o Grayscale Investments Sponsors, LLC 290 Harbor Drive, 4th Floor
Stamford, Connecticut				06902
(Address of Principal Executive Offices)				(Zip Code)

Registrant’s Telephone Number, Including Area Code: 212 668-1427

N/A

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

	☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
	☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
	☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
	☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class		Trading Symbol(s)		Name of each exchange on which registered
Grayscale Solana Trust ETF Shares		GSOL		NYSE Arca, Inc.

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 8.01. Other Events.

On November 18, 2025, CoinDesk Indices, Inc. (the “Index Provider”) announced a change to the Digital Asset Trading Platforms used to calculate the Index Price (the “Constituent Trading Platforms”) for Grayscale Solana Trust ETF (the “Trust”).

Effective November 18, 2025, the Index Provider removed itBit (SOL-U.S. Dollar (“USD”) trading pair) from the CoinDesk SOL CCIXber Reference Rate (the “Index”) due to the trading platform failing to meet the Index Provider’s conditions for inclusion, and did not add any Constituent Trading Platforms as part of its scheduled monthly review. As of the date of this current report, the Constituent Trading Platforms included in the Index Price are as follows:

•SOL-USD Trading Pairs: Bitfinex, Bitstamp by Robinhood (“Bitstamp”), Bullish, Crypto.com, Gemini, Kraken, LMAX Digital, and OKX.

•SOL-U.S. Dollar Coin (“USDC”) Trading Pairs: Bitstamp, Bullish, Bybit, Kraken, and OKX.

The Index Provider may change the trading venues that are used to calculate an Index Price, or otherwise change the way in which an Index Price is calculated, at any time. For example, the Index Provider has scheduled monthly reviews, in which it may add or remove Constituent Trading Platforms that satisfy or fail the criteria described in “Business—Overview of the SOL Industry and Market—The Index and the Index Price” in the Trust’s Registration Statement on Form S-1, as filed with the Securities and Exchange Commission on October 9, 2025.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

			Grayscale Investments Sponsors, LLC, as Sponsor of Grayscale Solana Trust ETF
Date:	November 21, 2025	By:	/s/ Edward McGee
			Name: Edward McGee Title: Chief Financial Officer*

* The Registrant is a trust and the identified person signing this report is signing in their capacity as an authorized officer of Grayscale Investments Sponsors, LLC, the Sponsor of the Registrant.