The Reporting Person's business address is 2100 Old Highway 8 NW, St. Paul, MN 55112.

The Reporting Person is a trust.

The Reporting Person has not been convicted in a criminal proceeding in the last five years (excluding traffic violations or similar misdemeanors).

The Reporting Person has not, during the last five years, been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.

The Reporting Person is the trustee of the revocable trust which holds the Common Stock.

The trustee of the Reporting Person received 6,060,783 shares of Common Stock and warrants to acquire 2,197, 944 shares of Common Stock of the Issuer acquired pursuant to a merger with Marker Cell Therapy, Inc. ("Marker Cell"). The Reporting Person was appointed to the Board of Directors of the Issuer. The Reporting Person was granted 12,500 options to acquire Common Stock of the Issuer upon joining the Board consistent with the Issuer's Non-Employee Director Compensation program. On January 26, 2023, the Issuer effected a one-for-ten (1-for-10) reverse stock split of its common stock and a corresponding reduction in the total number of authorized shares of its common stock from 300,000,000 to 30,000,000. John R. Wilson transferred such shares to the Trust on November 30, 2021.

The information set forth under Items 3 and 6 is hereby incorporated by reference. All of the securities of the Issuer were acquired for investment purposes. The Reporting Person sold the shares disclosed in Item 5(c) in normal and customary brokerage transactions. The Reporting Person intends to review on a continuing basis the investment in the Issuer. Based on such review, the Reporting Person may acquire, or cause to be disposed, such securities at any time or formulate other purposes, plans or proposals regarding the Issuer or any of its securities, to the extent deemed advisable in light of general investment and trading policies of the Reporting Person, the Issuer's business, financial condition and operating results, general market and industry conditions or other factors. Except as otherwise described in this Schedule, the Reporting Person currently has no plans or proposals that relate to or would result in: (a) the acquisition by any person of additional securities of the Issuer, or the disposition of securities of the Issuer; (b) an extraordinary corporate transaction, such as a merger, reorganization or liquidation, involving the Issuer or any of its subsidiaries; (c) a sale or transfer of a material amount of assets of the Issuer or any of its subsidiaries; (d) any change in the present Board of Directors or management of the Issuer, including any plans or proposals to change the number or term of directors or to fill any existing vacancies on the Board except as may be required for the Issuer to comply with exchange listing requirements with respect to the number of independent directors; (e) any material change in the present capitalization or dividend policy of the Issuer; (f) any other material change in the Issuer's business or corporate structure; (g) any changes in the Issuer's charter or by-laws or other actions which may impede the acquisition or control of the Issuer by any person; (h) causing a class of securities of the Issuer to be delisted from a national securities exchange or cease to be authorized to be quoted in an interdealer quotation system of a registered national securities association; (i) causing a class of equity securities of the Issuer to become eligible for termination of registration pursuant to Section 12(g)(4) of the Securities Exchange Act of 1934; or (j) any action similar to those enumerated above.

On the date hereof, the Reporting Person beneficially owns 659,901 shares of Common Stock, which comprises 5.10% of the Common Stock of the Issuer. As of, August 4, 2025, there were 12,938,910 shares of Common Stock of the Issuer issued and outstanding as represented by the Issuer's Report on Form 10-Q filed with the Securities and Exchange Commission on August 14, 2025.

The Reporting Person has the sole power to vote the shares beneficially owned.

The transactions effected during the past 60 days by the Reporting Person are set forth on Exhibit A, attached hereto.

Only the Reporting Person has the right to receive or the power to direct the receipt of dividends from, or proceeds from the sale of, the shares of Common Stock reported by this statement.

Not applicable.

John R. Wilson resigned from the Issuer's Board of Directors on January 24, 2025.

1. Schedule A dated as of August 15, 2025.