TANDEM WEALTH ADVISORS LLC

Tandem Wealth Advisors LLC 1850 N Central Avenue, Suite 330 Phoenix, AZ 85004 602-297-8600 www.tandemwealth.com info@tandemwealth.com Firm Part 2A Brochure February 28, 2025 This brochure (Form ADV Part 2A) provides information about the qualifications and business practices of Tandem Wealth Advisors LLC (“Tandem” or “Firm”). For questions about any of the information in this brochure, please contact us at 602-297-8600. The information in this brochure has not been approved or verified by the United States Securities and Exchange Commission or by any state securities authority. An investment adviser’s registration with the SEC or state authority does not imply a certain level of skill or training. Additional information about Tandem is available on the SEC’s website at www.adviserinfo.sec.gov. Version: February 28, 2025 TANDEM WEALTH ADVISORS LLC i  Item 2: Material Changes The last ADV update for Tandem Wealth Advisors LLC was on February 29, 2024. This brochure, dated February 28, 2025, contains the following material changes from our last filing: • Item 4 has been updated to introduce standalone financial planning services offered by Tandem. • Item 5 has been updated to outline fees for financial planning services. Tandem will ensure that clients receive a summary of any material changes to this and subsequent brochures within 120 days of the close of Tandem’s fiscal year December 31, 2024. Tandem will provide ongoing disclosure information about material changes as necessary. The firm will also provide clients with a new brochure, as necessary, based on changes or new information. This document should be reviewed in its entirety. For additional copies of this brochure, please contact us by telephone at 602-297-8600 or by email at info@tandemwealth.com. Additional information about Tandem is also available via the SEC’s website www.adviserinfo.sec.gov. Clients can search this site by using a unique identifying number, known as a CRD number. The CRD number for Tandem is 157794. The SEC’s web site also provides information about any persons affiliated with Tandem who are registered, or are required to be registered, as investment advisor representatives of Tandem. TANDEM WEALTH ADVISORS LLC ii  Item 3: Table of Contents Item 1 Cover Page i Item 2 Material Changes ii Item 3 Table of Contents iii Item 4 Advisory Business 1 Item 5 Fees and Compensation 4 Item 6 5 Performance-Based Fees and Side-By-Side Management Item 7 Types of Clients 6 Item 8 Methods of Analysis, Investment Strategies 6 and Risk of Loss Item 9 Disciplinary Information 10 Item 10 Other Financial Industry Activities 10 and Affiliations Item 11 Code of Ethics, Participation or Interest 10 in Client Transactions and Personal Trading Item 12 Brokerage Practices 11 Item 13 Review of Accounts 13 Item 14 Client Referrals and Other Compensation 14 Item 15 Custody 14 Item 16 Investment Discretion 15 Item 17 Voting Client Securities 15 Item 18 Financial Information 15 Form ADV Part 2B: Brochure Supplement 16 TANDEM WEALTH ADVISORS LLC iii  Item 4: Advisory Business Overview of Tandem Wealth Advisors Tandem Wealth Advisors LLC is an employee-owned, SEC-registered investment adviser. Tandem’s principal owner is C. Angus Schaal, CFP®, Senior Managing Director, as trustee of The Schaal Trust. Tandem provides investment management services, on a discretionary basis, including: (1) investment advisory services to individuals, families, trusts, retirement plans, charitable organizations and corporations through separate accounts; (2) unified managed account and model management in the form of asset allocation portfolios to third parties; and (3) wrap fee and separately managed account program services sponsored by third parties. Tandem’s investment management services are available directly through accounts maintained at a qualified custodian, through accounts in employer sponsored retirement plans, and through accounts on unaffiliated investment advisory platforms. Tandem’s investment management objective is to generate long-term capital growth and control risk through balanced portfolios keyed to investor’s risk tolerance. Our investment management process combines fundamental economic analysis with equity and fixed income valuation to build core portfolios for investors. Our aim is to improve investors’ personal performance through professionally managed portfolios. With a goal of lower fees and less trading, Tandem’s streamlined portfolios are keyed to investor needs and risk tolerance. Tandem’s disciplined investment process reflects a long-term focus that seeks to achieve stable returns over time without unnecessary risk. Tandem seeks diversification, downside protection, upside participation and steady income in portfolios while controlling risk through a strategic approach to asset allocation as well as screening for quality and valuation across asset classes. Adhering to a clear philosophy and repeatable process, Tandem strives to deliver consistent risk-adjusted returns at a low- cost over complete market cycles in both up and down markets. Tandem provides the following advisory services: • Discretionary investment advisory services to separate accounts. Tandem provides discretionary investment advisory services to individuals, families, trusts, retirement plans, charitable organizations and corporations through separate accounts at a qualified custodian. Tandem supervises and directs the investments of such accounts according to the guidelines set forth in an investment advisory agreement executed with each client. • Discretionary and non-discretionary sub-advisory services to third parties. Tandem also provides services to unified managed account programs through model management on both a discretionary and non-discretionary basis. The investment management services Tandem provides through these model management programs follow the investment philosophy, investment process, and security selection offered in Tandem’s separate accounts strategies. Tandem partners with various platform sponsors to offer its model management services under written agreements. Tandem provides the model’s holdings and weights to each platform by entering investment decisions through a secure web-based interface and providing periodic model updates. The platform sponsor then executes the trades to maintain the asset allocation in the client’s accounts within unified managed accounts in the client’s name at a qualified custodian unaffiliated with Tandem. Tandem TANDEM WEALTH ADVISORS LLC 1  manages these assets in accordance with the selected model and does not make a recommendation regarding the suitability of the clients’ investment objective or risk tolerance. • Discretionary investment services for wrap fee and separately managed account programs. Tandem acts as an investment advisor, or sub-advisor, to wrap fee programs sponsored by independent financial services firms such as banks, broker-dealers, trust companies, and other investment advisers. The investment management services Tandem provides through these wrap fee programs follow the investment philosophy, investment process, and security selection offered in Tandem’s separate account strategies. As a sub-advisor in wrap fee programs, Tandem is compensated by the program sponsor, receiving a portion of the total wrap fee paid by the client. In exchange for a single wrap fee paid to the sponsor, separately managed account program sponsors (typically a broker-dealer, trust company or advisory firm) can assist clients with suitability assessments, investment manager selection, custodial and client relationship services, and trade execution. Tandem does not sponsor any wrap fee, separately managed or unified managed account program. Tandem retains discretion over accounts’ investment selection in accordance with the selected separate account strategy. In most cases, Tandem will enter into a contract with the program sponsor rather than the client. • Investment sub-advisory services to the Tandem Collective Funds™. Tandem is the investment sub-advisor to a series of collective investment funds (CIFs), or collective investment trusts (CITs), known as the Tandem Collective Funds. Collective funds are tax-exempt trusts established and maintained by a bank for the collective investment of assets of certain qualified retirement plans identified under section 401(a) of the Internal Revenue Code and certain governmental and church plans. Both defined contribution and defined benefit plans may invest in a collective fund. Collective funds are exempt from the Investment Company Act of 1940 and securities registration requirements of the Securities Act of 1933. In addition to compliance with Internal Revenue Service requirements needed to maintain their tax-exempt status, collective funds are regulated under federal banking laws by the U.S. Department of Treasury / Office of the Comptroller of the Currency (OCC) under OCC regulation 9.18 or state banking regulations, depending on whether the trusts are maintained by a national or state bank. Collective funds are subject to the Employee Retirement Income Security Act (ERISA), U.S. Department of Labor (DOL) regulations and Internal Revenue Service requirements but are not subject to regulation by the Securities and Exchange Commission (SEC). Collective funds are, in many ways, the functional equivalent of open-end mutual funds and can allow investors efficient access to an investment strategy through a pooled investment designed for multiple underlying investors. First Mercantile Trust Company, a Tennessee chartered trust company, sponsors and maintains the Tandem Collective Funds. The offering documents for these collective funds include the Declaration of Trust, which provides a description of each of the funds and provisions governing their operation, and a Participation Agreement which must be executed by a plan in order to invest. The Participation Agreement also lists the fee schedule for the collective funds. First Mercantile Trust Company, as an ERISA fiduciary, must make investment and management decisions intended to be in the best interest of participating plans for plan participants and must comply with all other ERISA requirements applicable to plan investments. This fiduciary status provides an additional level to oversight not found in mutual funds. Further, the trustee generally has somewhat greater flexibility to provide a fund that fits the stated investment goals and strategic objectives of the trust vs. constraints common to open-end mutual funds. TANDEM WEALTH ADVISORS LLC 2  The Tandem Collective Funds are priced and traded daily, using standardized trading automation for managing and rebalancing, and clearing (processing and settling trades) through the National Securities Clearing Corporation (NSCC)—much like an open-end mutual fund. Additionally, like mutual funds, performance reporting provides plan participants and plan sponsors with access to detailed information in a timely manner. Asset and unit values for plan participants are obtained from NSCC and published by the custodian of the trust, Mid Atlantic Trust Company, and made available to plan participants via their retirement plan’s online access or statements. Additional information about the Tandem Collective Funds is available in the Declaration of Trust and Employee Benefit Summary. These documents may be obtained by emailing First Mercantile Trust Company at info@firstmerc.com. Financial Planning Advice Tandem may agree to provide financial planning under a separate agreement for an additional fee. Financial planning services may include assistance in defining and quantifying needs with respect to income and cash flow planning, retirement planning, analysis of investment and retirement accounts, education funding, risk management, and compensation planning. Tandem may prepare financial plans and analyses as well as financial statements estimating net worth, cash flow and income taxes. Tandem’s services may focus on all or only one of these areas depending upon the scope of the engagement with client. In providing financial planning services to clients, Tandem utilizes a proprietary financial planning tool, Handlebar™, that uses advanced analytics and probabilistic programming to help investors create a personalized financial plan. If clients engage Tandem to perform financial planning services, the services, fees, terms, and conditions of the relationship will be outlined in a financial planning agreement. Implementation of financial plan recommendations is entirely at the client’s discretion. Investment Restrictions Tandem does not generally tailor its various model portfolios to suit the needs of particular clients but may consider doing so upon request. Separate account clients may impose reasonable investment-related restrictions on the type of holdings to be held in accounts by notifying Tandem in writing. Tandem reserves the right to reject or modify investment restrictions based on the impact such restrictions may have on Tandem’s ability to maintain its investment strategy, the ability of the client to specifically identify the securities and/or the ability to diversify away a holding within a financial instrument, and the ability to adhere to and monitor certain types of investment restrictions. While Tandem employs portfolio management software allowing for the segregation and exclusion of certain assets for separate accounts, the firm’s ability to do so on external platforms may be limited. Wrap fee account holders may impose reasonable restrictions on the management of their accounts. Any restriction on the securities to be held in an account may lead Tandem under its discretion to restructure levels of cash or cash instruments in an account, select non-strategy securities for the account to increase diversification and reduce risk, and/or invest a greater percentage of a portfolio in fewer securities. In these instances, investment performance may be affected. Clients who impose investment restrictions should be aware that the performance of their accounts might differ from client accounts or firm composites which do not impose such investment restrictions. For separate accounts for which the firm has full discretion, Tandem will determine the timing of investment for initial deposits as well as new contributions. TANDEM WEALTH ADVISORS LLC 3  Assets Under Management As of February 28, 2025, across 292 relationships, Tandem has discretionary assets under management of $216.6 million in 651 accounts and non-discretionary assets under management of $6.8 million in 22 accounts. Item 5: Fees and Compensation Separate Accounts The firm charges fees based on a standard fee schedule (shown below) that it believes to be market-based and competitive. Tandem receives an annual investment management fee of between 0.50% and 1.00% depending on the size of the accounts. In select instances, given fact circumstances, fees may be reduced. The fees are always charged quarterly, in advance and based on the value of the assets managed on the last business day of the previous quarter. Tandem’s standard default fees for these services will be based on a percentage of assets under management as follows: Balanced Accounts Assets Under Management First $2,000,000 Next $3,000,000 Over $5,000,000 Annual Fee 1.00% 0.75% 0.50% • The custodian deducts Tandem’s management fees from client accounts. • Tandem prorates the fee for the initial quarter. • Clients who terminate their relationship will receive a prorated refund based off the number of days the relationship was in effect during the quarter. • Clients provide written authorization for direct debiting of their investment account. On a quarterly basis, Tandem will calculate fee adjustments for any individual additions and/or withdrawals of $100,000 or more during the preceding quarter. Fees are assessed on all assets under management, including securities, cash, and money market balances. Fees are not assessed on margin balances. In such cases, a refund or charge will be calculated on a pro rata basis based on the number of days for which such assets were in the account. Unified Managed Accounts and Model Management Tandem’s standard fee is 0.50% annually for unified managed accounts and model management for employer-sponsored retirement plans and other qualified accounts accessing the Tandem ETF Portfolios (see Item 8: Investment Strategies for further information) through platform sponsors, though Tandem may negotiate other fee arrangements. Fees are paid from plan assets, based upon assets under management, and according to the agreement signed with each plan sponsor and agreed to by the client. Most platforms accrue fees daily and deposit compensation into Tandem’s fee account maintained by the platform sponsor. TANDEM WEALTH ADVISORS LLC 4  Wrap Fee Programs and Separately Managed Accounts Wrap fee programs are arrangements where advisory services, execution, custody and other services are bundled in a single, stated wrap fee. As a manager, sub-advisor, or other, Tandem receives a portion of that wrap fee for their advisory services, usually a standard fee of 0.50% annually, which is detailed in the agreement signed by each client. Platforms typically charge in advance on a quarterly basis. Tandem may negotiate other fee arrangements. Fees are paid from individual client account assets and are based upon assets under management. The wrap fee program agreement details the portions of the fee paid to Tandem as manager, the client’s advisor, as well as brokerage, custodial and administrative program fees. Wrap fee programs have a separate brochure which details all fees charged. Investment Sub-Advisory Fees for Tandem Collective Funds™ Management fees of the Tandem Collective Funds are based on the level of managed assets (the more managed in a collective fund, the lower the fee). Tandem’s sub-advisory fees for these products are in the range of 0.20% – 0.40% (annualized). The fees accrue daily based on market value and are deducted monthly in arrears from the trust. The fees cover both investment sub-advisory and administrative services. Unlike mutual funds, where many marketing related costs are directly deducted from the associated funds, any marketing costs incurred by Tandem do not result in additional charges to the Tandem Collective Funds. Financial Planning Tandem charges a fixed fee for financial planning, yet this fee may be waived for clients receiving investment advisory services. Fees for financial planning services are billed at a fixed rate in advance as outlined in a financial planning agreement. There is no minimum fee required for financial planning services. Financial planning fees shall generally not exceed $10,000. External Compensation for the Sale of Securities to Clients Neither Tandem nor any of its investment advisor representatives receive any external compensation for the sale of securities to clients. Other Fees: Fees paid to Tandem for advisory services are separate and distinct from the fees and expenses that may be charged by other advisors, custodians and broker-dealers. These fees and expenses are described in the investment advisory agreements, prospectuses, and agreements with the custodians or broker-dealers. Additional expenses may be incurred if third-party managed products are held in a portfolio. For example, exchange-traded funds; mutual funds and closed-ended funds have various management and administrative fees related to them. Clients should review both the fees charged by Tandem and others to fully understand the total amount of fees to be paid. Item 6: Performance-Based Fees and Side-by-Side Management Tandem does not charge any performance-based fees (fees based on a share of capital gains or capital appreciation of client assets). Tandem does not engage in side-by-side management. TANDEM WEALTH ADVISORS LLC 5  Item 7: Types of Clients Tandem provides investment services to individuals, families, trusts, retirement plans, charitable organizations and corporations with $500,000 or more in investable assets. We reserve the right to make exceptions, at our discretion, on a case by case basis. Item 8: Methods of Analysis, Investment Strategies and Risk of Loss Methods of Analysis Tandem’s portfolios are constructed, monitored and rebalanced with insights taken from qualitative research, quantitative analysis, relative valuation and risk management through automated analysis technology and human oversight. Tandem’s methods of analysis include fundamental analysis, relative valuation, and cyclical/non-cyclical elements of markets and economy. Fundamental Analysis The true value of a security is not necessarily reflected in its stock price. Tandem uses a combination of qualitative and quantitative factors to determine the true value of a security. Utilizing a combination of top- down macroeconomic analysis and bottom-up stock selection, Tandem screens for quality and valuation. Tandem uses a relative valuation model to compare a company’s value to that of its competitors to formulate an initial interpretation on a company’s value. Metrics that are used in relative valuation include: price to earnings ratio, return on equity, operating margin, enterprise value, and price to free cash flow. All valuation approaches have benefits and limitations, yet relative valuation allows Tandem to determine many factors beyond analysis of company’s financial statements. Tandem looks at how a company has performed in the recent past and considers how it may perform in the future. Tandem’s research is generated within the firm, using a variety of outside resources to formulate investment catalysts and strategies, including, but not limited to the following: • Proprietary earnings and valuation models • Annual reports, prospectuses and regulatory filings • Company updates such as earnings calls, press releases and reports • Financial media and publications • Morningstar Advisor Workstation • Schwab Advisor Center Research • Bloomberg Terminal Risk Management Tandem’s ongoing research and diligent risk management addresses analytical risk and portfolio risk in its strategies. Analytical risk is managed through extensive securities research on portfolio holdings. Portfolio risk is managed through asset allocation, relative weights (asset classes, securities, sectors and sub-industries), less turnover, high-quality positions, optimal liquidity, reasonable correlation, monitoring and rebalancing. TANDEM WEALTH ADVISORS LLC 6  Investment Strategies The firm offers the following investment strategies in separate accounts: Tandem ETF Portfolios® The Tandem ETF Portfolios use an allocation strategy to build a diversified core portfolio to capture market returns at a low cost. The first objective is to provide clients with broad market exposure and risk control. This is the foundation or core of the portfolio, which is considered long-term. A smaller portion of the portfolio is used to take advantage of short-term opportunities to generate additional return beyond the core. The investment objective is “total return,” consisting of both capital appreciation and income. Stock and bond allocations are adjusted based on a client’s risk tolerance. Portfolios are monitored to determine when rebalancing between holdings is required. The portfolios maintain broad diversification and have exhibited historically low turnover. In addition, portfolios contain both US and non-US (international) holdings for further diversification and dividends. Bonds are concentrated in high-quality, investment grade fixed income positions for downside protection. ETFs provide investors with several advantages over open-ended mutual funds: low-cost, index-based performance, asset-class consistency, no minimum investment requirements, trading flexibility, transparency (clients know exactly what they hold), and tax efficiency. Tandem Core Portfolio™ The Tandem Core Portfolio utilizes a risk-controlled strategy that seeks long-term capital appreciation through a broadly diversified balanced portfolio that includes 40-45 individual stock positions. The majority of the individual stock positions are well-established companies with stable earnings, strong management teams, and healthy balance sheets. Tandem maintains a diversified portfolio across all economic sectors. The Tandem Core Portfolio holds a blend of growth, value, and growth-at-a-reasonable-price (GARP) stocks. For additional diversification by capitalization (e.g., mid and small cap stocks) and geography (e.g., US and Non-US stocks), ETFs are then used to complement the individual stocks. Both individual bonds and/or ETFs are used in the fixed-income category (based on the size of the portfolio) to create a balanced portfolio. In most cases, bonds are concentrated in high-quality, investment grade fixed income positions for downside protection. Tandem manages a client’s portfolio based on the investor’s risk tolerance and objectives. Risk of Loss Investing in securities involves risk of loss that clients should be prepared to bear. As with all investments, there are risks inherent in investing in securities, which risks vary depending on the nature of the investment, the strategy pursued, the type of instrument used to pursue or give effect to that strategy, the conditions and performance of the US and global economies, as well as the performance/financial condition of the individual company or entity issuing the security. As with all investments, the value of the investment at the time of sale will fluctuate and could be greater or less than the value at the time of purchase. While Tandem seeks to assess the merits of investing in a security based on the perceived risks and potential rewards, there are no assurances that Tandem’s assessments will be correct or that subsequent TANDEM WEALTH ADVISORS LLC 7  events or company or market changes will not render the assessment incorrect later. Tandem periodically rebalances client portfolios based on evidence that this process generally increases returns and/or lowers risk over the long-term. Rebalancing involves trading securities (both buying and selling) to bring a portfolio back to its target asset allocation. This is necessary at times as the distribution of the portfolio may drift from the investment goals. Clients may experience additional transaction costs due to this rebalancing and may in the short-term obtain lower returns if the assets sold have higher returns in the future than those recently purchased. A list of certain key risks associated with the strategies, and methodology Tandem offers are listed below: 1. Bond and Bond Fund Risk Bonds and bond funds generally have higher risks than money market funds. Risks associated with bonds and bond funds include: • Call Risk – The possibility that falling interest rates will cause a bond issuer to redeem—or call—its high-yielding bond before the bond’s maturity date. • Credit Risk – The possibility that companies or other issuers whose bonds are owned by the fund may fail to pay their debts (including the debt owed to holders of their bonds). Credit risk is less of a factor for bond funds that invest in insured bonds or U.S. Treasury bonds. By contrast, those that invest in the bonds of companies with poor credit ratings generally will be subject to higher risk. • Interest Rate Risk – The risk that the market value of the bonds will go down when interest rates go up. Because of this, clients can lose money in any bond fund, including those that invest only in insured bonds or Treasury bonds. • Prepayment Risk – The chance that a bond will be paid off early. For example, if interest rates fall, a bond issuer may decide to pay off (or “retire”) its debt and issue new bonds that pay a lower rate. When this happens, the bond or bond fund may not be able to reinvest the proceeds in an investment with as high a return or yield. • ETF Risk – The chance that an ETF purchased at a premium to NAV may not yield the same premium when sold or even sell at a discount to NAV. 2. Fundamental Analysis Risk Fundamental analysis, when used in isolation, has potential risks: • There are an infinite number of factors that can affect the earnings of a company, and its stock price, over time. These can include economic, political and social factors, in addition to the various company statistics. • It is difficult to give appropriate weightings to the factors. • A fundamental analyst assumes that other analysts will form the same view about the company and buy the stock, thus restoring its value and returning the trader or investor a capital gain. In practice, an undervalued company’s stock price can stay at approximately the same level (or decline) for years. • It ignores the influence of random events such as oil spills, product defects being exposed, and acts of God and so on. • Even when fundamental analysis reveals an undervalued company, or a stock with high growth prospects, it does not tell us anything about the timing of the purchase of the stock. In other words, TANDEM WEALTH ADVISORS LLC 8  Tandem may have discovered a grossly undervalued stock whose price has been falling for some time and may well continue falling. 3. Overall Risk • Clients need to remember that past performance is no guarantee of future results. All securities carry some level of risk. Clients may lose some or all of the money they invest, including their principal, because the securities held may go up and down in value. Dividend or interest payments may also fluctuate or stop completely, as market conditions change. • Before a client invests, they should read a position’s prospectus and shareholder reports to learn about its investment strategy and the potential risks. Securities with higher rates of return may take risks that are beyond their comfort level and are inconsistent with their financial goals. • While past performance does not necessarily predict future returns, it can tell clients how volatile (or stable) a position has been over a period. Generally, the more volatile a position, the higher the investment risk. If clients need their money to meet a financial goal in the short-term, they probably cannot afford the risk of investing in a position with a volatile history because they will not have enough time to ride out any declines in the stock market. 4. Stock or Stock Fund Risk Although stocks and stock fund’s values can rise and fall quickly over the short term, historically stocks have performed better over the long term than other types of investments—including corporate bonds, government bonds, and treasury securities. Overall “market risk” poses the greatest potential danger for investors. Stock prices can fluctuate for a broad range of reasons, such as the overall strength of the economy or demand for products or services. Not all stock or stock funds are the same. For example: • Growth stocks or funds focus on stocks that may not pay a regular dividend. • Income stock or funds invest in stocks that pay regular dividends. • Index funds aim to achieve the same return as a market index, such as the S&P 500 Composite Index, by investing in all—or perhaps a representative sample—of the companies included in an index. • Sector funds may specialize in an industry segment, such as technology or consumer products stocks. • ETF Risk – The chance that an ETF purchased at a premium to NAV may not yield the same premium when sold or even sell at a discount to NAV. Cybersecurity Tandem relies on digital and network technologies to conduct business, and such technologies are subject to random cyber-attacks that may risk the loss of digital systems, sensitive information, data, or operational failure. While Tandem maintains information technology protections meant to safeguard the confidentiality of information, there are limitations to such protections. Tandem has firmwide policies and procedures in place and monitors its current information security capabilities and systems regularly. Similarly, Tandem’s client accounts held by third-party service providers (custodians, broker-dealers, trust companies, investment advisories, platforms sponsors, and other financial intermediaries) may be exposed to cybersecurity risk. Tandem operates under the assumption that all third parties have cybersecurity policies and procedures in place to help protect client assets and information. Although TANDEM WEALTH ADVISORS LLC 9  Tandem has policies, procedures and systems designed to reduce risks associated with cybersecurity threats such as hacking or malicious software, there is no guarantee that such efforts will succeed. Item 9: Disciplinary Information Registered investment advisers are required to disclose all material facts regarding any legal or disciplinary events that would be material to a client’s evaluation of Tandem or the integrity of our management. Tandem has no disciplinary information to disclose. Neither the firm nor its management have been involved in administrative enforcement proceedings. Neither the firm nor its management have been involved in legal or disciplinary events related to past or present investment clients. Item 10: Other Financial Industry Activities and Affiliations Tandem does not have any relationship or arrangement that is material to our advisory business or to our clients that requires disclosure in this section. Item 11: Code of Ethics, Participation or Interest in Client Transactions and Personal Trading Code of Ethics Description The employees of Tandem have committed to a Code of Ethics requiring high standards of business conduct and a fiduciary duty to its clients. Tandem’s Code of Ethics is designed to ensure that employees personal securities transactions, outside business activities and interests of our employees do not interfere with making decisions in the best interest of advisory clients. Tandem has processes and procedures in place to address actual or potential conflicts of interest. The firm does not allow any employees to use material non-public information for their personal profit or to use internal research for their personal benefit in conflict with the benefit to our clients. The firm will provide a copy of the Code of Ethics to any client or prospective client upon request. Investment Recommendations Involving a Material Financial Interest and Conflict of Interest Tandem and its employees do not recommend to clients securities in which Tandem has a material financial interest. Advisory Firm Purchase of Same Securities Recommended to Clients and Conflicts of Interest Tandem and its employees may buy or sell securities that are also held by clients. To avoid conflicts of interest, employees are required to disclose all reportable securities transactions as well as provide us with copies of their brokerage statements. TANDEM WEALTH ADVISORS LLC 10  Tandem’s Chief Compliance Officer, C. Angus Schaal, reviews all employee trades each quarter. The personal trading reviews ensure that the personal trading of employees does not affect the markets and that the interests of Tandem’s clients are put first. Employee trades are relatively small and Tandem does not expect an impact to the securities markets. Client Securities Recommendations or Trades and Concurrent Advisory Firm Securities Transactions and Conflicts of Interest Tandem does not maintain a firm-proprietary trading account and does not have a material financial interest in any securities being recommended. Succession and Client Transition Plan In the event of C. Angus Schaal’s disability or death, a succession plan is in place for a leadership transition to Amy Bush, CFA, and Colin H. Denker. C. Angus Schaal understands the importance of a plan to assure ongoing service to Tandem’s clients and management of client assets in the event he is unable to perform his duties as Senior Managing Director for a period or permanently. C. Angus Schaal has selected industry professionals with the experience and skills necessary to assume the management of Tandem Wealth Advisors without significant interruption. This plan will be reviewed and updated as needed. Item 12: Brokerage Practices Tandem does not maintain physical custody of client assets. Client assets must be maintained in an account with a qualified custodian, generally a broker-dealer, trust company or bank. If a client decides to implement Tandem’s recommendations, Tandem will assist a client in opening a custodial account(s). Client funds are always held in a separate account, in the client’s name, and by an independent custodian. Clients are notified of any purchases or sales through trade confirmations and statements that are provided by the custodian. Clients will always maintain full and complete ownership of the rights to all assets held in the account, including the right to withdraw securities or cash, conduct proxy voting and receive transaction confirmations. Clients will receive a statement containing a description of all the activity in the account from the custodian in either printed or electronic form based upon the client’s preference. The statement lists the total value at the start of the period, itemizes all transaction activity during the period, and lists the type, amount, and total value of securities held as of the period end. Factors Used to Select Broker-Dealers for Client Transactions Tandem may recommend the use of a custodian and/or broker-dealer (“brokerage provider”) such as Charles Schwab and Co., Inc. (Schwab Advisor Services® division of Charles Schwab & Co., Inc.) (“Schwab”) for separate accounts or may utilize a brokerage provider of a client’s choosing. Clients select the brokerage provider for their accounts and enter directly into an agreement with their selected brokerage provider. Tandem will only recommend brokerage providers who are registered in the state in which the client resides. Tandem will recommend appropriate brokerage providers based on several factors including but not limited to: relatively low transaction fees and reporting ability. Tandem relies on its brokerage provider to provide execution services at the best prices available. TANDEM WEALTH ADVISORS LLC 11  Even though a client’s account may be maintained at Schwab, Tandem may use other brokers to execute trades at either a client’s direction. If clients choose Schwab, clients may pay higher fees or transaction costs than those obtainable by other broker-dealers. In most cases, Tandem believes clients are paying a discounted and reasonable rate. Generally, Tandem will not negotiate lower rates below the rates established by the executing broker-dealer, unless Tandem believes that such rate is unfair or unreasonable for the size and type of transaction. The firm believes that Schwab charges industry standard commissions on transactions. These commissions are reasonable and customary. All clients will enter into a separate custodial agreement with the custodian. This agreement, among other things, authorizes the custodian to take instructions from Tandem regarding all investment decisions for the client’s account. Tandem will select the securities bought and sold and the amount to be bought and sold, within the parameters of the objectives and risk tolerance of the client’s account. The custodian’s responsibilities with respect to effecting transactions, delivering securities, and making payments are also outlined in the custodial agreement. • Directed Brokerage In circumstances where a client directs Tandem to use a certain broker-dealer, Tandem still has a fiduciary duty to its clients. The following may apply with directed brokerage: Tandem’s inability to negotiate commissions, to obtain volume discounts, client may receive less favorable pricing, may cost clients more money, there may be a disparity in commission charges among clients, and potential conflicts of interests arising from brokerage firm referrals. Clients may incur higher prices for directed brokerage. Lower fees for comparable services may be available from other sources. Clients pay for all custodial fees in addition to the advisory fee charged by Tandem. • Best Execution Investment advisers who manage or supervise client portfolios on a discretionary basis have a fiduciary obligation of best execution. The determination of what may constitute best execution and price in the execution of a securities transaction by a broker involves several considerations and is subjective. Factors affecting brokerage selection include the overall, direct net economic result to the portfolios, the efficiency with which the transaction is effected, the ability to effect the transaction where a large block is involved, the operational facilities of the broker-dealer, the value of an ongoing relationship with such broker and the financial strength and stability of the broker. Tandem has an obligation to seek best execution for clients. In seeking best execution, the determinative factor is not the lowest possible commission cost but whether the transaction represents the best qualitative execution, taking into consideration the full range of a broker- dealer’s services including the value of research provided, execution capability, commission rates, and responsiveness. Therefore, Tandem will seek competitive commission rates, but may not obtain the lowest possible commission rates for account transactions. The firm does not receive any portion of the trading fees. • Soft Dollar Arrangements While Tandem has no formal soft dollar arrangements in place, Tandem utilizes the services of broker-dealers and/or asset custodians that may generate economic benefits. These benefits may include investment research, account services and technology used to manage accounts. These economic benefits may also provide Tandem with an ability to conduct “block” client trades, electronic download of trades, balances and positions, duplicate and batched client statements, TANDEM WEALTH ADVISORS LLC 12  measure and report portfolio performance and deducted advisory fees direct from client accounts. Clients do not incur higher costs because of these allocations, and such allocations are not a material consideration when a broker-dealer or asset custodian is selected. These services are utilized for the benefit of all clients, providing lawful and appropriate assistance to our firm’s investment decision-making responsibilities. Because such services could be considered to provide a benefit to our firm, we have a conflict of interest in directing clients’ brokerage business. Tandem does not believe that this conflict is material. Tandem conducts a periodic review of custodians and broker-dealers to ensure the firm is meeting its best execution obligation for clients and believes that its recommendation that clients engage Schwab as custodian is appropriate based on the fees Schwab charges and the services Schwab provides. Aggregating Securities Transactions for Client Accounts Tandem is authorized in our discretion to aggregate purchases, sales and other transactions made for the account with purchases, sales and transactions in the same securities for other clients of Tandem. All clients participating in the aggregated order shall receive an average share price. Trade Errors Tandem may make an error in submitting a trade order on behalf of a client. When this occurs, Tandem will place a correcting trade with the broker-dealer. The firm attempts to minimize trade errors by performing electronic reconciliation procedures with order tickets and intended orders, and by reviewing past trade errors to identify circumstances that may have caused the errors. Tandem will reimburse accounts for losses resulting from trade errors but will not credit accounts for market losses unrelated to its error or an error resulting in gains. At Charles Schwab, gains and losses may be reconciled in a trade error settlement account. It is Schwab’s practice to donate gains to charity. If Tandem must reimburse a client (as opposed to cancelling a trade) for a trade error greater than $5,000, Tandem shall obtain a client’s written approval to resolve the trade error prior to disbursing funds or crediting fees. Tandem never profits from trade errors. Tandem ETF Portfolios® Tandem does not choose or recommend broker-dealers for the Tandem ETF Portfolios. Each client enters into a separate contract directing Tandem to effect transactions through a qualified custodian, for custodial, operational and administrative services. Tandem does not have any authority or responsibility in negotiating commissions and/or other costs or execution charges. Clients are responsible for paying any custodial or brokerage fees charged in addition to the management fee received by Tandem. Tandem does not receive any fee in addition to the management fee. Item 13: Review of Accounts Schedule for Periodic Review of Client Accounts or Financial Plans and Advisory Persons Involved Account reviews are performed at least quarterly and more frequently when market conditions dictate. The review process includes comparing actual and target weights of asset classes, individual holdings and TANDEM WEALTH ADVISORS LLC 13  cash positions to identify accounts eligible for rebalancing. Financial plans are considered complete when recommendations are delivered to clients and a review is done only upon a client’s request. Review of Client Accounts on Non-Periodic Basis Other conditions that may trigger a review of client’s accounts are changes in the tax laws, new investment information, and changes in a client’s own situation. Performance variation from the norm will also trigger a portfolio review. Content of Client Provided Reports and Frequency Clients receive account statements from their custodian no less than quarterly for managed accounts. Additionally, Tandem will provide investment management clients with additional written reports at least once a year. The written updates include a portfolio summary, appraisal, and market commentary. Portfolio performance and asset allocation are reviewed at individual client meetings and conferences. Tandem will also provide a performance report at any time upon request. These reports provide portfolio performance and detail any changes in current strategy/asset allocation. Tandem utilizes Advent Software’s Black Diamond platform for portfolio management, reporting, and rebalancing. Item 14: Client Referrals and Other Compensation Advisory Firm Payments for Client Referrals Tandem does not receive any compensation for referring clients to another adviser nor does it pay any compensation to another adviser for their referring clients to Tandem. Item 15: Custody Standing Letters of Authorization Tandem is deemed to have custody of clients’ funds or securities when the firm has been granted standing authorization to move money from a client’s account to a third-party via a standing letter of authorization (“SLOA”) and, under that SLOA, Tandem is authorized to designate the amount or timing of transfers with the custodian. The SEC has set forth a set of standards intended to protect client assets in such situations, which Tandem follows. The firm does not have a beneficial interest on any client accounts. In addition, account statements reflecting all account activity are delivered directly from the qualified custodian to each client at least quarterly. Tandem recommends that clients review and compare these statements against reports received from the firm. Clients should contact Tandem or the custodian with any questions. Account Statements Tandem does not maintain physical possession of client cash or securities. However, our ability to deduct fees directly from clients’ accounts constitutes constructive custody. Client assets are held at qualified custodians, such as Schwab. Clients receive monthly or quarterly statements from the broker-dealer or custodian that holds and maintains a client’s investment assets. Tandem urges clients to carefully review TANDEM WEALTH ADVISORS LLC 14  such statements and compare this official custodial record to the reports and invoices provided to a client by Tandem. The firm’s statements may vary from custodial statements based on accounting procedures, reporting dates, or valuation methodologies of certain securities. If a client notices any discrepancies, please contact Tandem. Tandem is not allowed to make alterations or amendments to the custodian’s statement. This preserves the integrity of the custodian’s statement and provides clients with an independent appraisal of the account. Item 16: Investment Discretion Discretionary Authority for Trading Clients grant Tandem discretionary authority to manage securities accounts on their behalf in writing by executing an investment management agreement, limited power of attorney or similar document. Tandem does not provide non-discretionary investment management services. Tandem has the authority to determine, without obtaining specific client consent, the securities to be bought or sold, and the amount of the securities to be bought or sold. Tandem does not receive any portion of the transaction fees or commission rates paid by client to the custodian on certain trades. Discretionary trading authority facilitates placing trades in a client’s accounts on a client’s behalf so that Tandem may promptly implement the investment strategy the client has approved in writing. Item 17: Voting Client Securities Proxy Votes Tandem does not vote proxies on securities. Clients are expected to vote their own proxies. Clients will receive their proxies directly from the custodian of their account or from a transfer agent. When assistance on voting proxies is requested, Tandem will provide recommendations to a client. If a conflict of interest exists, it will be disclosed to the client. Item 18: Financial Information Under no circumstances will Tandem receive a prepayment in excess of $1,200 more than six months in advance of services rendered. Tandem does not take physical custody of client funds or securities. Financial Conditions Reasonably Likely to Impair Advisory Firm’s Ability to Meet Commitments to Clients Tandem has no condition that is reasonably likely to impair the firm’s ability to meet contractual commitments to our clients. Bankruptcy Petitions during the Past Ten Years Neither Tandem nor any of the principals have any bankruptcy petitions to disclose. TANDEM WEALTH ADVISORS LLC 15  Form ADV Part 2B: Brochure Supplement C. Angus Schaal, CFP® Tandem Wealth Advisors LLC 1850 N. Central Avenue, Suite 330 Phoenix, AZ 85004 602-297-8600 February 28, 2025 This brochure supplement provides information about C. Angus Schaal and supplements the Tandem Wealth Advisors LLC brochure. Clients should have received a copy of that brochure. Clients should contact C. Angus Schaal if they did not receive Tandem Wealth Advisors LLC’s brochure or have any questions about this supplement. Additional information about C. Angus Schaal is available on the SEC’s website at www.adviserinfo.sec.gov. C. Angus Schaal, CFP® CRD# 4649293 Item 2: Educational Background and Business Experience Year of Birth 1969 Educational Background Marlboro College; Bachelor of Arts with Honors; 1994 Cleveland State University; Undergraduate & Graduate studies in Business; 1998 – 2002 Arizona State University; Accelerated Financial Planning Program; 2007 Business Experience Tandem Wealth Advisors LLC; Senior Managing Director; 09/2014 – Present Managing Director; 05/2011 – 09/2014 Dumont & Blake Investment Advisors; Managing Director; 04/2008 – 05/2011 American Express; Financial Advisor; 04/2003 – 04/2008 Victory Capital Management; Client Manager; 06/1998 – 04/2003 Professional Designations The Certified finanCial Planner™ and CFP® (collectively, the “CFP® marks”) are professional certification marks granted in the United States by Certified Financial Planner Board of Standards, Inc. (“CFP® Board”). The CFP® certification is a voluntary certification; no federal or state law or regulation requires financial planners to hold CFP® certification. The CFP® is recognized in the United States and a number of other countries for its (1) high standard of professional education; (2) stringent code of conduct and standards of practice; and (3) ethical requirements that govern professional engagements with clients. To earn the credential, each CFP® candidate must have a bachelor’s degree (or higher) from an accredited college or university and three years of full-time personal financial planning experience. In addition, candidates must take the CFP® Certification examination and complete a CFP® -board registered program or hold an accepted designation, degree, or license. Every two years, CFP® certificate holders must complete a minimum of 30 hours of continuing education. More information regarding the CFP® is available at http://www.cfp.net. Item 3: Disciplinary Information C. Angus Schaal has no disciplinary history to disclose. TANDEM WEALTH ADVISORS LLC 16  Item 4: Other Business Activities C. Angus Schaal has no other business activities to disclose. Item 5: Additional Compensation C. Angus Schaal has no additional compensation. Item 6: Supervision Tandem and its investment adviser representatives provide investment advisory services in accordance with Tandem’s Policies and Procedures. Tandem’s Policies and Procedures include provisions for systematic reviews of the investment recommendations made by our representatives and of the securities that are held in our clients’ accounts. C. Angus Schaal is the Chief Compliance Officer of Tandem. C. Angus Schaal’s activities are supervised in accordance with the firm’s Policies and Procedures, and C. Angus Schaal adheres to and abides by all of Tandem’s Policies and Procedures. Specific areas of review include transactions, account suitability and written correspondence, including email, among other activities. Clients may contact C. Angus Schaal at (602) 297-8600 with any questions regarding our supervision or compliance practices. TANDEM WEALTH ADVISORS LLC 17  Form ADV Part 2B: Brochure Supplement Amy Bush, CFA Tandem Wealth Advisors LLC 1850 N. Central Avenue, Suite 330 Phoenix, AZ 85004 602-297-8600 February 28, 2025 This brochure supplement provides information about Amy Bush and supplements the Tandem Wealth Advisors LLC brochure. Clients should have received a copy of that brochure. Clients should contact C. Angus Schaal if they did not receive Tandem Wealth Advisors LLC’s brochure or have any questions about this supplement. Additional information about Amy Bush is available on the SEC’s website at www.adviserinfo.sec.gov. Amy Bush, CFA CRD# 7121005 Item 2: Educational Background and Business Experience Year of Birth 1969 Educational Background Case Western Reserve University; Master in Business Administration, Finance; 1997 Miami University; Bachelor of Science in Finance; 1992 Business Experience Tandem Wealth Advisors LLC; Chief Investment Strategist; 05/2019 – Present Sabbatical; 05/2018 – 05/2019 Victory Capital Management; Portfolio Strategist; 03/2015 – 05/2018 Portfolio Manager; 06/1999 – 03/2015 Professional Designations The Chartered Financial Analyst (CFA) charter is a globally respected, graduate-level investment credential established in 1962 and awarded by CFA Institute—the largest global association of investment professionals. There are currently more than 107,000 CFA charterholders working in 135 countries. To earn the CFA charter, candidates must: 1) pass three sequential, six-hour examinations; 2) have at least four years of qualified professional investment experience; 3) join CFA Institute as members; and 4) commit to abide by, and annually reaffirm, their adherence to the CFA Institute Code of Ethics and Standards of Professional Conduct. High Ethical Standards The CFA Institute Code of Ethics and Standards of Professional Conduct, enforced through an active professional conduct program, require CFA charterholders to: • Place their clients’ interests ahead of their own • Maintain independence and objectivity • Act with integrity • Maintain and improve their professional competence • Disclose conflicts of interest and legal matters TANDEM WEALTH ADVISORS LLC 18  Global Recognition Passing the three CFA exams is a difficult feat that requires extensive study (successful candidates report spending an average of 300 hours of study per level). Earning the CFA charter demonstrates mastery of many of the advanced skills needed for investment analysis and decision making in today’s quickly evolving global financial industry. As a result, employers and clients are increasingly seeking CFA charterholders—often making the charter a prerequisite for employment. Additionally, regulatory bodies in 23 countries/territories recognize the CFA charter as a proxy for meeting certain licensing requirements, and more than 125 colleges and universities around the world have incorporated a majority of the CFA Program curriculum into their own finance courses. Comprehensive and Current Knowledge The CFA Program curriculum provides a comprehensive framework of knowledge for investment decision making and is firmly grounded in the knowledge and skills used every day in the investment profession. The three levels of the CFA Program test a proficiency with a wide range of fundamental and advanced investment topics, including ethical and professional standards, fixed-income and equity analysis, alternative and derivative investments, economics, financial reporting standards, portfolio management, and wealth planning. The CFA Program curriculum is updated every year by experts from around the world to ensure that candidates learn the most relevant and practical new tools, ideas, and investment and wealth management skills to reflect the dynamic and complex nature of the profession. To learn more about the CFA charter, visit www.cfainstitute.org. Item 3: Disciplinary Information Amy Bush has no disciplinary history to disclose. Item 4: Other Business Activities Amy Bush has no other business activities to disclose. Item 5: Additional Compensation Amy Bush has no additional compensation. Item 6: Supervision Tandem and its investment adviser representatives provide investment advisory services in accordance with Tandem’s Policies and Procedures. Tandem’s Policies and Procedures include provisions for systematic reviews of the investment recommendations made by our representatives and of the securities that are held in our clients’ accounts. C. Angus Schaal is the Chief Compliance Officer of Tandem. Amy Bush’s activities are supervised in accordance with the firm’s Policies and Procedures, and Amy Bush adheres to and abides by all of Tandem’s Policies and Procedures. Specific areas of review include transactions, account suitability and written correspondence, including email, among other activities. Clients may contact C. Angus Schaal at (602) 297-8600 with any questions regarding our supervision or compliance practices. TANDEM WEALTH ADVISORS LLC 19  Form ADV Part 2B: Brochure Supplement Christopher Broyles Tandem Wealth Advisors LLC 1850 N. Central Avenue, Suite 330 Phoenix, AZ 85004 602-297-8600 February 28, 2025 This brochure supplement provides information about Christopher Broyles and supplements the Tandem Wealth Advisors LLC brochure. Clients should have received a copy of that brochure. Clients should contact C. Angus Schaal if they did not receive Tandem Wealth Advisors LLC’s brochure or have any questions about this supplement. Additional information about Christopher Broyles is available on the SEC’s website at www.adviserinfo.sec.gov. Christopher Broyles CRD# 4473882 Item 2: Educational Background and Business Experience Year of Birth 1978 Educational Background Kellogg School of Management, Northwestern; MBA, Strategy & Marketing; 2016 University of Illinois Champaign-Urbana; Bachelor of Science in Finance; 2001 Business Experience Tandem Wealth Advisors LLC; Managing Director; 01/2025 – Present Sabbatical; 03/2024 – 12/2024 S&P Global Inc.; Associate Director; 04/2022 – 02/2024 Empower Financial Services Inc.; Senior Product Manager; 11/2019 – 04/2022 Devbridge Group; Senior Product Manager; 04/2017 – 09/2019 Morningstar Inc.; Senior Product Manager; 10/2007 – 04/2017 Calamos Investments; Operations Supervisor; 10/2001 – 10/2007 Item 3: Disciplinary Information Christopher Broyles has no disciplinary history to disclose. Item 4: Other Business Activities Christopher Broyles has no other business activities to disclose. Item 5: Additional Compensation Christopher Broyles has no additional compensation. Item 6: Supervision Tandem and its investment adviser representatives provide investment advisory services in accordance with Tandem’s Policies and Procedures. Tandem’s Policies and Procedures include provisions for systematic reviews of the investment recommendations made by our representatives and of the securities that are held in our clients’ accounts. C. Angus Schaal is the Chief Compliance Officer of Tandem. Christopher Broyles’s activities are supervised in accordance with the firm’s Policies and Procedures, and Christopher Broyles adheres to and abides by all of Tandem’s policies and procedures. Specific areas of review include transactions, account suitability and written correspondence, including email, among other activities. Clients may contact C. Angus Schaal at (602) 297-8600 with any questions regarding our supervision or compliance practices. TANDEM WEALTH ADVISORS LLC 20  Form ADV Part 2B: Brochure Supplement Colin H. Denker Tandem Wealth Advisors LLC 1850 N. Central Avenue, Suite 330 Phoenix, AZ 85004 602-297-8600 February 28, 2025 This brochure supplement provides information about Colin H. Denker and supplements the Tandem Wealth Advisors LLC brochure. Clients should have received a copy of that brochure. Clients should contact C. Angus Schaal if they did not receive Tandem Wealth Advisors LLC’s brochure or have any questions about this supplement. Additional information about Colin H. Denker is available on the SEC’s website at www.adviserinfo.sec.gov. Colin H. Denker CRD# 6473115 Item 2: Educational Background and Business Experience Year of Birth 1988 Educational Background Arizona State University; Bachelor of Arts in Psychology; 2017 Business Experience Tandem Wealth Advisors LLC; Director of Operations and Client Services; 01/2018 – Present Advisory Associate; 06/2014 – 01/2018 Item 3: Disciplinary Information Colin H. Denker has no disciplinary history to disclose. Item 4: Other Business Activities Colin H. Denker has no other business activities to disclose. Item 5: Additional Compensation Colin H. Denker has no additional compensation. Item 6: Supervision Tandem and its investment adviser representatives provide investment advisory services in accordance with Tandem’s Policies and Procedures. Tandem’s Policies and Procedures include provisions for systematic reviews of the investment recommendations made by our representatives and of the securities that are held in our clients’ accounts. C. Angus Schaal is the Chief Compliance Officer of Tandem. Colin Denker’s activities are supervised in accordance with the firm’s Policies and Procedures, and Colin Denker adheres to and abides by all of Tandem’s Policies and Procedures. Specific areas of review include transactions, account suitability and written correspondence, including email, among other activities. Clients may contact C. Angus Schaal at (602) 297-8600 with any questions regarding our supervision or compliance practices. TANDEM WEALTH ADVISORS LLC 21  Form ADV Part 2B: Brochure Supplement Robert L. Cohen Tandem Wealth Advisors LLC 1850 N. Central Avenue, Suite 330 Phoenix, AZ 85004 602-297-8600 February 28, 2025 This brochure supplement provides information about Robert L. Cohen and supplements the Tandem Wealth Advisors LLC brochure. Clients should have received a copy of that brochure. Clients should contact C. Angus Schaal if they did not receive Tandem Wealth Advisors LLC’s brochure or have any questions about this supplement. Additional information about Robert L. Cohen is available on the SEC’s website at www.adviserinfo.sec.gov. Robert L. Cohen CRD# 6972937 Item 2: Educational Background and Business Experience Year of Birth 1985 Educational Background University of Phoenix; Bachelor of Science in Business; 2011 Business Experience Tandem Wealth Advisors, LLC; Senior Client Relationship Associate; 11/2023 – Present Advisory Associate; 12/2021 – 11/2023 Sabbatical; 07/2021 – 12/2021 Tandem Wealth Advisors LLC; Advisory Associate; 04/2018 – 07/2021 Advisory Associate Intern; 01/2018 – 04/2018 Lotus Wei LLC; Director of Operations; 12/2013 – 01/2018 USAA; Consumer Lending Associate; 12/2012 – 12/2013 Item 3: Disciplinary Information Robert L. Cohen has no disciplinary history to disclose. Item 4: Other Business Activities Robert L. Cohen has no other business activities to disclose. Item 5: Additional Compensation Robert L. Cohen has no additional compensation. Item 6: Supervision Tandem and its investment adviser representatives provide investment advisory services in accordance with Tandem’s Policies and Procedures. Tandem’s Policies and Procedures include provisions for systematic reviews of the investment recommendations made by our representatives and of the securities that are held in our clients’ accounts. C. Angus Schaal is the Chief Compliance Officer of Tandem. Robert L. Cohen’s activities are supervised in accordance with the firm’s Policies and Procedures, and Robert L. Cohen adheres to and abides by all of Tandem’s Policies and Procedures. Specific areas of review include transactions, account suitability and written correspondence, including email, among other activities. Clients may contact C. Angus Schaal at (602) 297-8600 with any questions regarding our supervision or compliance practices. TANDEM WEALTH ADVISORS LLC 22  Form ADV Part 2B: Brochure Supplement Meghan Mulligan Tandem Wealth Advisors LLC 1850 N. Central Avenue, Suite 330 Phoenix, AZ 85004 602-297-8600 February 28, 2025 This brochure supplement provides information about Meghan Mulligan and supplements the Tandem Wealth Advisors LLC brochure. Clients should have received a copy of that brochure. Clients should contact C. Angus Schaal if they did not receive Tandem Wealth Advisors LLC’s brochure or have any questions about this supplement.. Additional information about Meghan Mulligan is available on the SEC’s website at www.adviserinfo.sec.gov. Meghan Mulligan CRD# 7978539 Item 2: Educational Background and Business Experience Year of Birth 1981 Educational Background University of Phoenix; Bachelor of Science in Business Accounting; 2007 Business Experience Tandem Wealth Advisors LLC; Client Relationship Associate; 07/2024 – Present Accounting Associate; 05/2011 – 07/2024 MGM Accounting PLLC; Principal; 01/2007 – 06/2024 Item 3: Disciplinary Information Meghan Mulligan has no disciplinary history to disclose. Item 4: Other Business Activities Meghan Mulligan has no other business activities to disclose. Item 5: Additional Compensation Meghan Mulligan has no additional compensation. Item 6: Supervision Tandem and its investment adviser representatives provide investment advisory services in accordance with Tandem’s Policies and Procedures. Tandem’s Policies and Procedures include provisions for systematic reviews of the investment recommendations made by our representatives and of the securities that are held in our clients’ accounts. C. Angus Schaal is the Chief Compliance Officer of Tandem. Meghan Mulligan’s activities are supervised in accordance with the firm’s Policies and Procedures, and Meghan Mulligan adheres to and abides by all of Tandem’s policies and procedures. Specific areas of review include transactions, account suitability and written correspondence, including email, among other activities. Clients may contact C. Angus Schaal at (602) 297-8600 with any questions regarding our supervision or compliance practices. TANDEM WEALTH ADVISORS LLC 23  Form ADV Part 2B: Brochure Supplement Jane Michael Murphy Tandem Wealth Advisors LLC 1850 N. Central Avenue, Suite 330 Phoenix, AZ 85004 602-297-8600 February 28, 2025 This brochure supplement provides information about Jane Michael Murphy and supplements the Tandem Wealth Advisors LLC brochure. Clients should have received a copy of that brochure. Clients should contact C. Angus Schaal if they did not receive Tandem Wealth Advisors LLC’s brochure or have any questions about this supplement. Additional information about Jane Michael Murphy is available on the SEC’s website at www.adviserinfo.sec.gov. Jane Michael Murphy CRD# 1899747 Item 2: Educational Background and Business Experience Year of Birth 1959 Educational Background Simmons School of Management; Master of Business Administration; 1987 Union College; Bachelor of Arts in American Studies; 1981 Business Experience Tandem Wealth Advisors LLC; Vice President; 09/2020 – Present Acceleration Retirement LLC; Managing Director; 12/2010 – 09/2020 Stable Two Financial; Managing Partner; 03/2009 – 04/2011 Fidelity; Sr. Vice President; 04/1993 – 02/2009 John Hancock; Account Executive; 09/1991 – 03/1993 Fidelity; Vice President; 09/1987 – 08/1991 Item 3: Disciplinary Information Jane Michael Murphy has no disciplinary history to disclose. Item 4: Other Business Activities Jane Michael Murphy has no other business activities to disclose. Item 5: Additional Compensation Jane Michael Murphy has no additional compensation. Item 6: Supervision Tandem and its investment adviser representatives provide investment advisory services in accordance with Tandem’s Policies and Procedures. Tandem’s Policies and Procedures include provisions for systematic reviews of the investment recommendations made by our representatives and of the securities that are held in our clients’ accounts. C. Angus Schaal is the Chief Compliance Officer of Tandem. Jane Michael Murphy’s activities are supervised in accordance with the firm’s Policies and Procedures, and Jane Michael Murphy adheres to and abides by all of Tandem’s policies and procedures. Specific areas of review include transactions, account suitability and written correspondence, including email, among other activities. Clients may contact C. Angus Schaal at (602) 297-8600 with any questions regarding our supervision or compliance practices. TANDEM WEALTH ADVISORS LLC 24