Grayscale Sui Staking ETF Proposes Quarterly Staking Reward Distributions

What Happened
Grayscale Sui Staking ETF (GSUI) filed an 8-K on July 17, 2026 announcing a Proposed Amendment (Amendment No. 2) to its Trust Agreement (originally dated December 16, 2025). The Sponsor, Grayscale Investments Sponsors, LLC, intends to enter the Proposed Amendment with CSC Delaware Trust Company (the Trustee) on or around August 7, 2026. The change would require the Trust to convert Staking Consideration (staking rewards) to cash at least quarterly and promptly distribute the cash proceeds to shareholders, net of any Trust expenses not assumed by the Sponsor.

Key Details

• Filing date: July 17, 2026; Proposed Amendment expected on or around August 7, 2026.
• Mechanics: Trust must reduce staking rewards to cash no less often than quarterly and distribute net cash proceeds to shareholders promptly.
• Taxes and compliance: Amendment aims to conform the Trust’s staking program to IRS Revenue Procedure 2025-31 so the Trust can continue to be treated as a grantor trust for U.S. federal income tax purposes.
• Net distributions: Amounts depend on staking rewards actually received each period and cannot be predicted with certainty; distributions will be net of Trust expenses (which may include a portion paid to the Sponsor).
• Notice and disclosures: Sponsor says the amendment is not materially adverse but provided a 20-day prior notice to shareholders; the Trust will file a prospectus supplement and has filed exhibits covering tax consequences and supplemental risk factors.

Why It Matters
For investors, this amendment would change how staking rewards are handled — instead of being held as non-cash consideration, staking rewards would be converted to cash regularly and distributed, which could provide periodic cash flows from the ETF. The size and timing of those distributions depend on actual staking receipts and allowable deductions for Trust expenses, so cash payments are uncertain. The amendment also addresses tax treatment by aligning the Trust with recent IRS guidance; shareholders should review the tax disclosure and consult their tax advisors about any tax consequences.