Item 5 - Additional Compensation ............................................................................................................................. 4 Item 6 - Supervision ........................................................................................................................................................ 4 Brochure Supplement (Part 2B of Form ADV) ............................................................................ 5 McKay Parr .......................................................................................................................................................................... 6 Item 2 - Educational Background and Business Experience .......................................................................... 6 Item 3 - Disciplinary Information .............................................................................................................................. 7 Item 5 - Additional Compensation ............................................................................................................................. 7 Item 6 - Supervision ........................................................................................................................................................ 8 Brochure Supplement (Part 2B of Form ADV) .......................................................................... 10 Thomas J. Mattingly ...................................................................................................................................................... 10 Item 2 - Educational Background and Business Experience ....................................................................... 10 Item 3 - Disciplinary Information ........................................................................................................................... 10 Item 5 - Additional Compensation .......................................................................................................................... 10 Item 6 - Supervision ..................................................................................................................................................... 10 Firm Description Big Sioux Financial, Inc. was founded in 1988. Big Sioux Financial, Inc. DBA Big Sioux Wealth Management (“Big Sioux”) was formed and became a Registered Investment Advisor in 2019. Big Sioux Financial, Inc also has a DBA Big Sioux Investments & Insurance that was formed in 2019. Finally, Big Sioux Financial, Inc. owns the entity Reliabank Dakota. David Johnson, Janet Johnson, Ethan Johnson and Reid Johnson are all unregistered majority owners, and will not offer financial advisory services. Dustin Padgett serves as the Division President, Chief Compliance Officer and is an Investment Advisor Representative for the firm. Types of Advisory Services ASSET MANAGEMENT Big Sioux offers discretionary and non-discretionary asset management services to advisory Clients. Big Sioux will offer Clients ongoing asset management services through determining individual investment goals, time horizons, objectives, and risk tolerance. Investment strategies, investment selection, asset allocation, portfolio monitoring and the overall investment program will be based on the above factors. The Client will authorize Big Sioux discretionary authority to execute selected investment program transactions as stated within the Investment Advisory Agreement. Discretionary When the Client provides Big Sioux discretionary authority the Client will sign a limited trading authorization or equivalent. Big Sioux will have the authority to execute transactions in the account without seeking Client approval on each transaction. Non-discretionary When the Client elects to use Big Sioux on a non-discretionary basis, Big Sioux will determine the securities to be bought or sold and the amount of the securities to be bought or sold. However, Big Sioux will obtain prior Client approval on each and every transaction before executing any transaction. ERISA PLAN SERVICES Big Sioux provides service to qualified retirement plans including 401(k) plans, 403(b) plans, pension and profit sharing plans, cash balance plans, and deferred compensation plans. Big Sioux may act as 3(21) Fiduciary: Limited Scope ERISA 3(21) Fiduciary. Big Sioux may serve as a limited scope ERISA 3(21) fiduciary that can advise, help and assist plan sponsors with their investment decisions on a non-discretionary basis. As an investment

advisor Big Sioux has a fiduciary duty to act in the best interest of the Client. The plan sponsor is still ultimately responsible for the decisions made in their plan, though using Big Sioux can help the plan sponsor delegate liability by following a diligent process. 1. Fiduciary Services are:
• Provide non-discretionary investment advice to the Client about asset classes and investment alternatives available for the Plan in accordance with the Plan’s investment policies and objectives. Client will make the final decision regarding the initial selection, retention, removal and addition of investment options. Big Sioux acknowledges that it is a fiduciary as defined in ERISA section 3 (21) (A) (ii).
• Assist the Client in the development of an investment policy statement (“IPS”). The IPS establishes the investment policies and objectives for the Plan. Client shall have the ultimate responsibility and authority to establish such policies and objectives and to adopt and amend the IPS.
• Provide non-discretionary investment advice to the Plan Sponsor with respect to the selection of a qualified default investment alternative for participants who are automatically enrolled in the Plan or who have otherwise failed to make investment elections. The Client retains the sole responsibility to provide all notices to the Plan participants required under ERISA Section 404(c) (5) and 404(a)-5.
• Assist in monitoring investment options by preparing periodic investment reports that document investment performance, consistency of fund management and conformance to the guidelines set forth in the IPS and make recommendations to maintain, remove or replace investment options.
• Meet with Client on a periodic basis to discuss the reports and the investment recommendations. 2. Non-fiduciary Services are:
• Assist in the education of Plan participants about general investment information and the investment alternatives available to them under the Plan. Client understands Big Sioux’s assistance in education of the Plan participants shall be consistent with and within the scope of the Department of Labor’s definition of investment education (Department of Labor Interpretive Bulletin 96-1). As such, Big Sioux is not providing fiduciary advice as defined by ERISA 3(21)(A)(ii) to the Plan participants. Advisor will not provide investment advice concerning the prudence of any investment option or combination of investment options for a particular participant or beneficiary under the Plan.
• Assist in the group enrollment meetings designed to increase retirement plan participation among the employees and investment and financial understanding by the employees. Big Sioux may provide these services or, alternatively, may arrange for the Plan’s other providers to offer these services, as agreed upon between Advisor and Client. 3. Big Sioux has no responsibility to provide services related to the following types of assets (“Excluded Assets”):
• Employer securities;
• Real estate (except for real estate funds or publicly traded REITs);
• Stock brokerage accounts or mutual fund windows;
• Participant loans;
• Non-publicly traded partnership interests;
• Other non-publicly traded securities or property (other than collective trusts and similar vehicles); or
• Other hard-to-value or illiquid securities or property. Excluded Assets will not be included in calculation of Fees paid to Big Sioux on the ERISA Agreement. Specific services will be outlined in detail to each plan in the 408(b)2 disclosure. FINANCIAL PLANNING AND CONSULTING If financial planning services are applicable, a thorough review of all applicable topics including but not limited to, Investments, Qualified Plans, Insurance, and Retirement Income will be reviewed. If a conflict of interest exists between the interests of Big Sioux and the interests of the Client, the Client is under no obligation to act upon Big Sioux’s recommendation. If the Client elects to act on any of the recommendations, the Client is under no obligation to effect the transaction through Big Sioux. Financial plans will be completed and delivered inside of thirty (30) days contingent upon timely delivery of all required documentation. SEMINARS AND WORKSHOPS Big Sioux holds seminars and workshops to educate the public on different types of investments and the different services they offer. The seminars are educational in nature and no specific investment or tax advice is given. Client Tailored Services and Client Imposed Restrictions The goals and objectives for each Client are documented in our Client files. Investment strategies are created that reflect the stated goals and objectives. Clients may impose restrictions on investing in certain securities or types of securities. Agreements may not be assigned without written Client consent. Wrap Fee Programs Big Sioux does not sponsor any wrap fee programs. Client Assets under Management Big Sioux has the following assets under management: Discretionary Amounts: Non-discretionary Amounts: Date Calculated: $155,517,796 $33,788,101 September 12, 2023