# EDGAR Filing Document

**Accession Number:** 0000770200
**File Stem:** 0001628873-26-000028
**Filing Date:** 2026-5
**Character Count:** 25823
**Document Hash:** e74f02285f6e5874918d8ec72d3aeca4
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001628873-26-000028.hdr.sgml**: 20260504

**ACCESSION NUMBER**: 0001628873-26-000028

**CONFORMED SUBMISSION TYPE**: 497K

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20260504

**DATE AS OF CHANGE**: 20260504

**EFFECTIVENESS DATE**: 20260504

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Midas Series Trust
- **CENTRAL INDEX KEY:** 0000770200

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 497K
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 002-98229
- **FILM NUMBER:** 26935019

**BUSINESS ADDRESS:**
- **STREET 1:** 17 OLD DREWSVILLE ROAD
- **CITY:** WALPOLE
- **STATE:** NH
- **BUSINESS PHONE:** 2127850900

**MAIL ADDRESS:**
- **STREET 1:** 17 OLD DREWSVILLE ROAD
- **CITY:** WALPOLE
- **STATE:** NH

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MIDAS FUND, INC.
- **DATE OF NAME CHANGE:** 20060215

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MIDAS FUND INC
- **DATE OF NAME CHANGE:** 19951201

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** EXCEL MIDAS GOLD SHARES INC
- **DATE OF NAME CHANGE:** 19920703

## Series and Classes Contracts Data

### Midas Special Opportunities (Series ID: S000038959)

| Class ID   | Class Name                  | Ticker Symbol   |
|:---|:---|:---|
| C000119766 | Midas Special Opportunities | MISEX           |

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| | |
|:---|:---|
| **Summary Prospectus** | **April 30, 2026** |

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![](image0.jpg)

#### MIDAS SERIES TRUST

#### MIDAS SPECIAL OPPORTUNITIES
Ticker: MISEX

Before you invest, you may want to review the Fund's prospectus, which contains more information about the Fund and its risks. You can find the Fund's prospectus and statement of additional information, reports to shareholders, and other information about the Fund online at https://www.midasfunds.com/documents. You can also get this information at no cost by calling 800-400-6432 or by sending an e-mail request to info@performancedriven.us, or from your financial intermediary. The Fund's prospectus and statement of additional information, both dated April 30, 2026, are incorporated herein by reference into this Summary Prospectus.

#### INVESTMENT OBJECTIVE

Midas Special Opportunities seeks capital appreciation.

#### FEES AND EXPENSES OF THE FUND

The following tables describe the fees and expenses that you may pay if you buy, hold, and sell shares of the Fund. 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.

**Shareholder Fees** (fees paid directly from your investment)

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| | |
|:---|:---|
| Maximum Sales Charge (Load) Imposed on Purchases |  |
| Maximum Deferred Sales Charge (Load) |  |
| Maximum Sales Charge (Load) Imposed on Reinvested Dividends |  |
| Redemption Fee on shares redeemed within 30 days of purchase | 1.00% |

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**Annual Fund Operating Expenses** (expenses that you pay each year as a percentage of the value of your investment)

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| | |
|:---|:---|
| Management Fees | 0.93% |
| Distribution and Service (12b-1) Fees | 0.25% |
| Other Expenses | 2.26% |
| Total Annual Fund Operating Expenses | 3.44% |

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| | | | |
|:---|:---|:---|:---|
| **EXAMPLE:**<br> This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. This example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. This example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be: | **EXAMPLE:**<br> This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. This example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. This example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be: | **EXAMPLE:**<br> This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. This example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. This example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be: | **EXAMPLE:**<br> This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. This example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. This example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be: |
| One Year | Three Years | Five Years | Ten Years |
| $347 | $1056 | $1788 | $3721 |

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#### 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 indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in Total Annual Fund Operating Expenses or in the example, affect the Fund's performance. During the Fund's most recent fiscal year, the Fund's portfolio turnover rate was 5% of the average value of its portfolio.

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#### INVESTMENTS, RISKS, AND PERFORMANCE

#### Principal Investment Strategies of the Fund

Under normal circumstances, in pursuit of its investment objective, the Fund may invest in any security type (*e.g.*, common and preferred stocks, bonds, convertible securities, etc.) and in companies of any size, industry or sector, including both domestic and foreign companies. Generally, Midas Management Corporation (the "Investment Manager") seeks to invest in what it believes to be quality companies with unique combinations of strength in operations, products, and finances with either growth or value characteristics. A security is typically sold when its potential to meet the Fund's investment objective is limited or exceeded by another potential investment, when an investment in an issuer no longer appears to meet the Fund's investment objective, or when the Fund must raise cash to meet shareholder redemptions. In seeking to enhance returns, the Fund may use futures, options, and short sales and may use leverage to the extent permitted under the Investment Company Act of 1940, as amended (the "1940 Act"). To achieve the Fund's investment objective, the Investment Manager may use a seasonal investing strategy to invest the Fund's assets to gain exposure to the securities markets during periods anticipated to be favorable based on patterns of investor behavior as driven by and related to accounting periods, taxable events, and other calendar related phenomena. The Investment Manager's analysis also takes into consideration those periods during the year in which it anticipates that investors are more likely to invest additional money into the securities markets. These periods can be related to accounting periods and may be further refined by considerations of tax cycles, holidays, and other factors. The Fund may trade securities actively in pursuit of its investment objective.

The Fund may, from time to time, under adverse market, economic, political, or other conditions, take a defensive position, sell securities short, and/or invest some or all of its assets in cash, bank deposits, money market funds, money market securities of U.S. and foreign issuers, short term bonds, repurchase agreements, or similar investments. When the Fund takes a defensive position, it may not achieve its investment objective.

#### Principal Risks of Investing in the Fund

An investment in the Fund is not a bank deposit. It is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency. It is not a complete investment program and you could lose money by investing in the Fund.

*Industry Concentration Risk.* The Fund is subject to industry concentration risk, which is the risk that the Fund's performance can be significantly affected by economic, market, political or regulatory occurrences affecting particular industries. Because the Fund may be concentrated in an industry, its performance may be more volatile than a fund that is not so concentrated. A downturn in a single industry could cause the Fund's value to decline more sharply than that of the general market.

*Sector Risk.* To the extent the Fund focuses its investments, from time to time, in a particular sector, the Fund will be subject to a greater degree to the risks specific to that sector. Market conditions, interest rates, and economic, regulatory, or financial developments could significantly affect a single sector, and therefore the Fund, to a greater extent than if the Fund's investments were diversified across different sectors.

*Non-Diversification.* The Fund is non-diversified, which means that it is not limited by the 1940 Act in the proportion of its assets that may be invested in the securities or obligations of a single issuer. As a result, the Fund may hold a smaller number of issuers than if it were diversified. Investing in a non-diversified fund could involve more risk than investing in a fund that holds a broader range of securities because changes in the financial condition of a single issuer could cause greater fluctuation in the Fund's total returns.

*Leverage.* The Fund may use leverage to the extent permitted under the 1940 Act. Leveraging (buying securities using borrowed money) exaggerates the effect on the Fund's net asset value ("NAV") of any increase or decrease in the market value of the Fund's investments. Money the Fund borrows for leveraging is limited to 33 1/3% of the value of the Fund's total assets. These borrowings are subject to interest costs that may or may not be offset by income or capital gain from the securities purchased. There can be no assurance that the Fund's use of leverage will be successful.

*Foreign Investments.* Investments in the securities of foreign issuers involve certain considerations and risks not ordinarily associated with investments in the securities of domestic issuers. Foreign companies are not generally subject to the same accounting, auditing, and financial standards and requirements as those applicable to U.S. companies. Additionally, there may be less publicly available information about a foreign company than a U.S. company. Investments in foreign securities could expose the Fund to the direct or indirect consequences of political, social, or economic changes in the foreign countries where those securities are issued or in which the issuers are located. With respect to certain foreign countries, there are risks of expropriation, confiscatory taxation, political or social instability, or diplomatic developments that could affect assets of the Fund held in custody in those foreign countries. If the value of any foreign currency in which the Fund's investments are denominated declines relative to the U.S. dollar, the value of the Fund's investments is expected to decline proportionately. In addition, a portfolio that includes foreign securities can expect to have a higher expense ratio because of the increased transaction costs on non-U.S. securities markets and the increased costs of maintaining the custody of foreign

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securities. The Fund may experience higher levels of each of these risks by investing in emerging (less developed) markets. Further, geopolitical events may cause market disruptions. Ongoing armed conflict in Europe and in the Middle East may cause continued volatility in the securities markets, which could negatively impact the Fund.

*Growth Securities Risk*. The Fund may invest in companies that the Investment Manager believes have growth potential. Securities of companies perceived to be "growth" companies may be more volatile than other securities and may involve special risks. If the Investment Manager's perception of a company's growth potential is not realized, the securities purchased may not perform as expected, thereby reducing the Fund's returns. In addition, because different types of securities tend to shift in and out of favor depending on market and economic conditions, "growth" securities may perform differently from the market as a whole and other types of securities.

*Small Capitalization.* The Fund may invest in companies that are small or thinly capitalized and may have a limited operating history. Investments in small-cap companies may involve greater risks than investments in larger, more established issuers because they generally are more vulnerable to adverse business or economic developments than stocks of larger companies. The securities of small capitalization companies generally are less liquid and have narrower product lines, more limited financial resources, and more limited markets for their stock as compared with larger companies. As a result, the value of such securities may be more volatile than the securities of larger companies. During broad market downturns, the Fund's NAV may fall further than those of funds investing in larger companies. Full development of small capitalization companies takes time, and for this reason, among others, the Fund should be considered a long term investment and not a vehicle for seeking short term profit.

*Medium and Large Capitalization.* Compared to small capitalization companies, medium and large capitalization companies may be less responsive to business changes and opportunities. At times, the stocks of large capitalization companies may lag other types of stocks in performance. Compared to large capitalization companies, medium capitalization companies may have a shorter history of operations, and may have limited product lines, markets or financial resources.

*Pricing.* Many factors may influence the price at which the Fund could sell any particular portfolio investment. The sales price may well differ—higher or lower—from the Fund's last valuation, and such differences could be significant, particularly for illiquid securities and securities that trade in relatively thin markets and/or markets that experience extreme volatility. If market conditions make it difficult to value some investments, the Fund may value these investments using more subjective methods, such as fair value pricing. In such cases, the value determined for an investment could be different than the value realized upon such investment's sale. As a result, you could pay more than the market value when buying Fund shares or receive less than the market value when selling Fund shares.

*Security Selection.* The securities selected for the Fund's portfolio may decline in value. The Investment Manager could be wrong in its analysis of industries, companies, economic trends, the relative attractiveness of different securities, or other matters. As a result, the Fund may underperform the markets, its benchmark index or other funds with the same objective or in the same asset class.

*Active Trading.* The Fund may trade securities actively. This strategy could increase transaction costs, reduce performance, and result in increased taxable distributions, which could lower the Fund's after tax performance.

*Short Selling, Options, and Futures Transactions.* The Fund may engage in short selling, options, and futures transactions to increase returns. There is a risk that these transactions may reduce the Fund's returns or increase volatility. The Fund may incur a loss as a result of a short position if the price of the asset sold short increases in value between the date of the short position sale and the date on which an offsetting position is purchased, plus any premiums or interest paid to the third party. Because the Fund's potential loss on a short position arises from increases in the value of the asset sold short, the extent of such loss, like the price of the asset sold short, is theoretically unlimited. In addition, derivatives, such as options and futures, can be illiquid and highly sensitive to changes in their underlying security, interest rate or index, and as a result can be highly volatile. Derivatives also may be subject to certain other risks such as leverage risk, liquidity risk, interest rate risk, market risk, credit risk, the risk that a counterparty may be unable or unwilling to honor its obligations, management risk and the risk of mispricing or improper valuation. A small investment in certain derivatives could have a potentially large impact on the Fund's performance.

*Cybersecurity Risk*. With the Internet and other technologies being essential to conducting business, the Fund is susceptible to operational, information security, and related risks. The growing use of artificial intelligence may lead to increasingly sophisticated cybersecurity attacks. Cyber incidents affecting the Fund or its service providers, including incidents involving artificial intelligence, may cause disruptions and impact business operations, potentially resulting in financial losses, interference with the Fund's ability to calculate its NAV, impediments to trading, the inability of shareholders to transact business, violations of applicable privacy and other laws, regulatory fines, penalties, reputational damage, reimbursement or other compensation costs, or additional related costs.

*Market Risk.* The market risks associated with investing in the Fund are those related to fluctuations in the value of the investments in the Fund's portfolio. A risk of investing in stocks and other instruments is that their value will go up and down, sometimes rapidly and unpredictably, reflecting overall economic conditions and other factors and you could lose money. The Fund may invest in emerging companies, such as start-ups and spin-offs, and special situations, which include companies undergoing unusual or possibly one time

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developments such as reorganizations or liquidations. These investments may involve above average market price volatility and greater risk of loss. Certain unanticipated events, such as natural disasters, terrorism, war, and other geopolitical events, can have a dramatic adverse effect on the investments held by the Fund.

*Recent Market Events*. U.S. and international markets have experienced volatility in recent months and years due to a number of economic, political and global macro factors, including elevated inflation levels and wars in Europe and in the Middle East. Uncertainties regarding interest rate levels, political events, potential trade restrictions and tariffs, global geopolitical conflicts, and the possibility of a national or global recession have also contributed to market volatility.

#### Past Performance

The following bar chart provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year. The following table compares the Fund's average annual returns for the 1, 5, and 10 year periods with an appropriate broad based securities market index. **Past performance (before and after taxes) is not predictive of future performance**.

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| | |
|:---|:---|
| **MIDAS SPECIAL OPPORTUNITIES** – Year-by-year total return as of 12/31 each year (%) | **MIDAS SPECIAL OPPORTUNITIES** – Year-by-year total return as of 12/31 each year (%) |
| ![](image1.jpg) | Best Quarter:<br> 4/1/2020 – 6/30/2020<br> 25.34% |
| ![](image1.jpg) | Worst Quarter:<br> 1/1/2020 – 3/31/2020<br> (28.63)% |

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#### AVERAGE ANNUAL TOTAL RETURNS
For the periods ended December 31, 2025

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| | | | |
|:---|:---|:---|:---|
|  | 1 Year | 5 Years | 10 Years |
| Return Before Taxes | 29.87% | 18.25% | 15.32% |
| Return After Taxes on Distributions | 27.35% | 16.79% | 13.68% |
| Return After Taxes on Distributions and Sale of Fund Shares | 19.01% | 14.46% | 12.25% |
| S&P 500 Index (reflects no deduction for fees, expenses, or taxes) | 17.88% | 14.42% | 14.82% |

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The Fund's returns shown above include the effect of reinvesting dividends and capital gain distributions. After tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. In certain cases, the figure representing "Return After Taxes on Distributions and Sale of Fund Shares" may be *higher* than the other return figures for the same period. A higher after tax return can occur when a capital loss occurs upon redemption and translates into an assumed tax deduction that benefits the shareholder. Because actual after tax returns depend on a shareholder's tax situation, returns may vary from those shown. After tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred or other tax-advantaged arrangements such as 401(k) plans or individual retirement accounts.

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#### MANAGEMENT

#### Investment Manager

Midas Management Corporation

#### Portfolio Manager

Thomas Winmill, President and Trustee of the Trust, has managed the Fund since April 2016.

#### IMPORTANT ADDITIONAL INFORMATION

#### Purchase and Sale of Fund Shares

#### Minimum Investments

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| ***Account Type*** | ***Initial*** | ***Subsequent*** | ***Individual Retirement Accounts ("IRAs") and Health Savings Accounts ("HSAs")*** | ***Initial*** | ***Subsequent*** |
| Regular | $2000 | $100 | Traditional, Roth IRA, HSA | $2000 | $100 |
| UGMA/UTMA | $2000 | $100 | Spousal, Rollover IRA | $2000 | $100 |
| Education Savings Account | $2000 | $100 | SEP, SIMPLE IRA | $2000 | $100 |
| Automatic Investment Plan | $100 | $100 | HSA | $2000 | $100 |

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**Midas Automatic Investment Plan**. With the Midas Automatic Investment Plan, you can establish a convenient and affordable long term investment program through one or more of the plans described in this prospectus. Minimum investments above are waived for each plan since they are designed to facilitate an automatic monthly investment of $100 or more into your Fund account(s).

#### Redemptions

Generally, you may redeem shares of the Fund by any of the methods explained below on each day the New York Stock Exchange ("NYSE") is open for trading ("Business Day").

**By Mail**. Regular mail: Midas Funds, c/o Ultimus Fund Solutions, LLC, P.O. Box 46707, Cincinnati, OH 45246-0707. Overnight express mail and courier: Midas Funds, c/o Ultimus Fund Solutions, LLC, 225 Pictoria Drive, Suite 450, Cincinnati, OH 45246.

**By Telephone or Internet**. Call 800-400-6432 or visit www.MidasFunds.com.

**For Electronic Funds Transfer (EFT)**. You may redeem as little as $250 worth of shares by requesting EFT service. EFT proceeds are ordinarily available in your bank account within two Business Days.

**For Federal Funds Wire**. If you are redeeming $1,000 or more worth of shares, you may request that the proceeds be wired to your authorized bank. The Fund's transfer agent imposes a $10 fee for each wire redemption and deducts the fee directly from your account. This fee is subject to change. Your bank may also impose a fee for the incoming wire.

#### Tax Information

The Fund's distributions are taxable, unless you are a nontaxable entity or are investing through a tax-deferred account or other tax-advantaged arrangement, and will generally be taxed as ordinary income or long term capital gains.

#### Payments to Broker-Dealers and Other Financial Intermediaries

If you purchase shares of the Fund through a broker-dealer or other financial intermediary (such as a bank), the Fund's distributor may pay the intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other financial intermediary and your salesperson to recommend the Fund over another investment. Your broker-dealer or financial intermediary may also charge you fees for purchasing or selling Fund shares. Ask your broker-dealer or financial intermediary or visit their website for more information. In addition, from time to time, the Fund enters into arrangements with financial intermediaries pursuant to which such parties agree to perform sub-transfer agent, sub-accounting, record-keeping or other administrative services on

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behalf of their clients who are shareholders of the Fund. The Fund makes payments to these financial intermediaries for such administrative services provided to clients who hold shares of the Fund through omnibus or networked accounts. Payments to financial intermediaries for such services, sometimes referred to as "sub-TA fees," vary based on factors such as, among other things, the type of intermediary, the types and level of services provided and the amount of assets or accounts held in the Fund. Sub-TA fees paid by the Fund are included in the total amount of "Other Expenses" in the "Fees and Expenses of the Fund" tables above.

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