Grayscale Solana Staking ETF 8-K

What Happened

• Grayscale Investments Sponsors, LLC (the Sponsor), on behalf of Grayscale Solana Staking ETF (the Trust, GSOL), and CSC Delaware Trust Company (the Trustee) entered into Amendment No. 3 to the Trust Agreement. The amendment, effective June 25, 2026, reduces the annual Sponsor’s Fee from 0.35% to 0.19% of the Trust’s aggregate assets. The Trust Agreement was originally dated September 19, 2025 and previously amended on October 27, 2025 and January 2, 2026. The amendment is attached to the 8‑K as Exhibit 4.1.

Key Details

• Amendment No. 3 to the Second Amended and Restated Declaration of Trust and Trust Agreement was executed June 25, 2026.
• Sponsor’s Fee reduced from 0.35% to 0.19% of the Trust’s assets, effective June 25, 2026.
• Parties: Grayscale Investments Sponsors, LLC (Sponsor) and CSC Delaware Trust Company (Trustee).
• The filing is an Item 1.01 entry into a material definitive agreement; the amendment is included as Exhibit 4.1 to the 8‑K.

Why It Matters

• A lower Sponsor’s Fee reduces the ongoing management cost charged to the Trust’s assets, which can improve net returns for shareholders all else equal. This change is a concrete fee reduction disclosed directly to investors via an 8‑K. Investors should note the effective date (June 25, 2026) and may review the full amendment (Exhibit 4.1) for complete terms. The report was signed by Edward McGee, CFO of the Sponsor, on June 25, 2026.