Tidal Trust III Files Post-Effective Amendment on March 23, 2026

Tidal Trust III 485BPOS Filing Summary
FieldDetail
CompanyTidal Trust III
Form Type485BPOS
Filed DateMar 23, 2026
Risk Levellow
Pages15
Reading Time18 min
Key Dollar Amounts$10,000
Sentimentneutral

Complexity: moderate

Sentiment: neutral

Topics: compliance, amendment, fund-operations, governance

TL;DR

**Tidal Trust III just filed a routine operational update, keeping its legal docs current.**

AI Summary

Tidal Trust III filed a 485BPOS post-effective amendment on March 23, 2026, updating various agreements including investment advisory, sub-advisory, distribution, and custody agreements. This filing, with an effectiveness date of March 23, 2026, also includes updated Codes of Ethics for advisors like Rockefeller Asset Management and VistaShares Advisors LLC. For investors, this matters because it reflects routine operational updates and compliance measures for the trust, ensuring its continued legal and ethical functioning, which is crucial for the long-term stability and governance of their investment.

Why It Matters

This filing ensures that Tidal Trust III's operational and compliance documents are up-to-date, reflecting necessary legal and ethical standards for its investment activities.

Risk Assessment

Risk Level: low — This filing is a routine post-effective amendment, indicating standard operational and compliance updates rather than significant new risks.

Analyst Insight

A smart investor would view this as a routine compliance update, indicating ongoing governance and operational maintenance, and would not expect immediate market impact. It reinforces the trust's commitment to regulatory adherence.

Key Players & Entities

  • Tidal Trust III (company) — the filer of the 485BPOS amendment
  • Rockefeller Asset Management (company) — an entity with an updated Code of Ethics (EX-99.(P)(IV))
  • VistaShares Advisors LLC (company) — an entity with an updated Code of Ethics (EX-99.(P)(VII))
  • RCN Wealth Advisors, Inc. (company) — an entity with an updated Code of Ethics (EX-99.(P)(XXI))
  • March 23, 2026 (date) — the filing and effectiveness date of the amendment

FAQ

What is the purpose of the 485BPOS filing by Tidal Trust III?

The 485BPOS filing by Tidal Trust III is a post-effective amendment, indicating updates to various operational and compliance documents, such as investment advisory agreements, sub-advisory agreements, and codes of ethics, as detailed in the filing documents like prto-485bpos_032326.htm.

When was this 485BPOS filing accepted and effective?

The 485BPOS filing by Tidal Trust III was accepted on March 23, 2026, and also became effective on March 23, 2026, as stated in the filing details.

Which specific agreements were amended or included in this filing?

The filing includes amendments to several agreements, such as the Sixteenth Amendment to the Distribution Agreement (ex99-eixiii.htm), Sixteenth Amendment to the Custodian Agreement (ex99-gixiv.htm), and Fourth Amendment to the Amended and Restated Fund Administration Servicing Agreement (ex99-hiiv.htm), among others.

Are there any updated Codes of Ethics included in this filing?

Yes, the filing includes updated Codes of Ethics for Rockefeller Asset Management (ex99-piv.htm), VistaShares Advisors LLC (ex99-pvii.htm), and RCN Wealth Advisors, Inc. (ex99-pxxi.htm).

What is the SEC Accession No. for this specific filing?

The SEC Accession No. for this 485BPOS filing is 0001999371-26-006716, as indicated in the filing details.

Filing Stats: 4,462 words · 18 min read · ~15 pages · Grade level 13.4 · Accepted 2026-03-23 17:01:28

Key Financial Figures

  • $10,000 — ds. The Example assumes that you invest $10,000 in the Fund for the time periods indica

Filing Documents

From the Filing

AS FILED WITH THE U.S. SECURITIES AND EXCHANGE COMMISSION ON MARCH 23, 2026 1933 Registration File No. 333-221764 1940 Act File No. 811-23312 UNITED SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-1A REGISTRATION Pre-Effective Amendment No. ___ Post-Effective Amendment No. 177 and/or REGISTRATION Amendment No. 180 TIDAL TRUST III (Exact Name of Registrant as Specified in Charter) Tidal ETF Services LLC 234 West Florida Street, Suite 700 Milwaukee, WI 53204 (Address of Principal Executive Offices, Zip Code) (Registrant's Telephone Number, including Area Code) (855) 843-2534 The Corporation Trust Company 1209 Orange Street Corporation Trust Center Wilmington, DE 19801 (Name and Address of Agent for Service) Copies to: Eric W. Falkeis Tidal ETF Services LLC 234 West Florida Street, Suite 700 Milwaukee, WI 53204 Rachael L. Schwartz Sullivan & Worcester LLP 1251 Avenue of the Americas, 19 th Floor New York, New York 10020 It is proposed that this filing will become effective (check appropriate box): immediately upon filing pursuant to paragraph (b) on (date) pursuant to paragraph (b) 60 days after filing pursuant to paragraph (a)(1) on (date) pursuant to paragraph (a)(1) 75 days after filing pursuant to paragraph (a)(2) on (date) pursuant to paragraph (a)(2) of rule 485 Explanatory Note : This Post-Effective Amendment No. 177 to the Registration Statement of Tidal Trust III (the "Trust") is being filed to respond to Staff comments with respect to the registration of the RCN Pareto Strategic Allocation ETF, as a new series of the Trust, and to make other permissible changes under Rule 485(b). PRTO RCN Pareto Strategic Allocation ETF listed on NYSE Arca, Inc. PROSPECTUS March 23, 2026 The U.S. Securities and Exchange Commission ("SEC") has not approved or disapproved of these securities or passed upon the accuracy or adequacy of this Prospectus. Any representation to the contrary is a criminal offense. TABLE OF CONTENTS RCN Pareto Strategic Allocation ETF – Fund Summary 1 Additional Information about the Fund 11 Portfolio Holdings Information 20 Management 20 Fund Sponsor 22 How to Buy and Sell Shares 22 Dividends, Distributions, and Taxes 24 Distribution 26 Premium/Discount Information 27 Additional Notices 27 Financial Highlights 27 RCN Pareto Strategic Allocation ETF – FUND SUMMARY Investment Objective The RCN Pareto Strategic Allocation ETF (the "Fund") seeks long-term capital appreciation. Fees and Expenses of the Fund This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Fund ("Shares"). You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and Example below. Annual Fund Operating Expenses (1) (expenses that you pay each year as a percentage of the value of your investment) 1 Management Fees 0.69 % Distribution and Service (12b-1) Fees 0.00 % Other Expenses (2) 0.00 % Acquired Fund Fees and Expenses (2)(3) 0.13 % Total Annual Fund Operating Expenses 0.82 % (1) The Fund's adviser will pay, or require a sub-adviser to pay, all of the Fund's expenses, except for the following: advisory fees and sub-advisory fees, interest charges on any borrowings, dividends and other expenses on securities sold short, taxes, brokerage commissions and other expenses incurred in placing orders for the purchase and sale of securities and other investment instruments, acquired fund fees and expenses, accrued deferred tax liability, distribution fees and expenses paid by the Fund under any distribution plan adopted pursuant to Rule 12b-1 under the Investment Company Act of 1940, as amended (the "1940 Act"), and litigation expenses, and other non-routine or extraordinary expenses. (2) Based on estimated amounts for the current fiscal year. (3) Acquired Fund Fees and Expenses are indirect fees and expenses that the Fund incurs from investing in the shares of other investment companies Expense Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then hold or redeem all of your Shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. The Example does not take into account brokerage commissions that you may pay on your purchases and sales of Shares. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 1 Year 3 Years $ 84 $ 262 Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or turns over its portfolio). A higher portfolio turnover rate may in

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