Exhibit 10.2

Note dated November 18, 2025, from AIM ImmunoTech Inc. to Streeterville Capital, LLC.

THIS PROMISSORY NOTE (THIS “NOTE”) HAS NOT BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT OR PURSUANT TO AN AVAILABLE EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT.

PROMISSORY NOTE

Effective Date: November 18, 2025

U.S. $3,301,250.00

FOR VALUE RECEIVED, AIM ImmunoTech Inc., a Delaware corporation (“Borrower”), promises to pay to Streeterville Capital, LLC, a Utah limited liability company, or its successors or assigns (“Lender”), $3,301,250.00 and any interest, fees, charges, and late fees accrued hereunder on the date that is twenty-four (24) months after the Purchase Price Date (the “Maturity Date”) in accordance with the terms set forth herein and to pay interest on the Outstanding Balance at the rate of ten percent (10%) per annum from the Purchase Price Date until the same is paid in full. All interest calculations hereunder shall be computed on the basis of a 360-day year comprised of twelve (12) thirty (30) day months, shall compound daily and shall be payable in accordance with the terms of this Note. This Promissory Note (this “Note”) is issued and made effective as of November 18, 2025 (the “Effective Date”). This Note is issued pursuant to that certain Note Purchase Agreement dated November 18, 2025, as the same may be amended from time to time, by and between Borrower and Lender (the “Purchase Agreement”). Certain capitalized terms used herein are defined in Attachment 1 attached hereto and incorporated herein by this reference.

This Note carries an OID of $781,250.00. In addition, Borrower agrees to pay $20,000.00 to Lender to cover Lender’s legal fees, accounting costs, due diligence, monitoring and other transaction costs incurred in connection with the purchase and sale of this Note (the “Transaction Expense Amount”), all of which amount is fully earned and included in the initial principal balance of this Note. The purchase price for this Note shall be $2,500,000.00 (the “Purchase Price”), computed as follows: $3,301,250.00 original principal balance, less the OID, less the Transaction Expense Amount. The Purchase Price shall be payable by Lender by wire transfer of immediately available funds.

8. Payment; Prepayment.

8.1. Payment. All payments owing hereunder shall be in lawful money of the United States of America and delivered to Lender at the address or bank account furnished to Borrower for that purpose. All payments shall be applied first to (a) costs of collection, if any, then to (b) fees and charges, if any, then to (c) accrued and unpaid interest, and thereafter, to (d) principal.

8.2. Prepayment. Borrower may pay all or any portion of the amount owed earlier than it is due without penalty or premium.

8.3. Mandatory Prepayment. Each time Borrower receives any money in connection with any fundraising or financing transaction, it will be required to make a mandatory prepayment hereunder in amount equal to the lesser of (a) twelve and one half percent (12.5%) of the amount raised in such transaction, and (b) the Outstanding Balance due under this Note as of the closing date of such financing, payable within two (2) days of receiving such amount.

9. Security. This Note is unsecured.

10. Redemption. Beginning on the date that is six (6) months after the Purchase Price Date, Lender shall have the right, exercisable at any time in its sole and absolute discretion, to redeem any amount of this Note up to $250,000.00 (such amount, the “Redemption Amount”) per calendar month by providing written notice to Borrower (each, a “Redemption Notice”). For the avoidance of doubt, Lender may submit to Borrower one (1) or more Redemption Notices in any given calendar month so long as the aggregate amount being redeemed in such month does not exceed $250,000.00. Upon receipt of any Redemption Notice, Borrower shall pay the applicable Redemption Amount in cash to Lender within three (3) Business Days of Borrower’s receipt of such Redemption Notice.

11. Defaults and Remedies.

11.1. Defaults. The following are trigger events under this Note (each, a “Trigger Event”): (a) Borrower fails to pay any principal, interest, fees, charges, or any other amount when due and payable hereunder; (b) a receiver, trustee or other similar official shall be appointed over Borrower or a material part of its assets and such appointment shall remain uncontested for twenty (20) days or shall not be dismissed or discharged within sixty (60) days; (c) Borrower becomes insolvent or generally fails to pay, or admits in writing its inability to pay, its debts as they become due, subject to applicable grace periods, if any; (d) Borrower makes a general assignment for the benefit of creditors; (e) Borrower files a petition for relief under any bankruptcy, insolvency or similar law (domestic or foreign); (f) an involuntary bankruptcy proceeding is commenced or filed against Borrower (except where the Lender is the petitioning creditor) and is not dismissed within sixty (60) days; (g) the occurrence of a Fundamental Transaction without Lender’s prior written consent and such failure remains uncured for a period of ten days after written notice to Company by Lender of such failure; (h) Borrower fails to observe or perform any covenant set forth in Section 4 of the Purchase Agreement; (i) Borrower or any pledgor, trustor, or guarantor of this Note defaults or otherwise fails to observe or perform any covenant, obligation, condition or agreement of Borrower or such pledgor, trustor, or guarantor contained herein or in any other Transaction Document (as defined in the Purchase Agreement), other than those specifically set forth in this Section 4.1 and Section 4 of the Purchase Agreement and such default or failure remains uncured for a period of ten (10) days after written notice to Company by Lender of such default or failure; (j) any representation, warranty or other statement made or furnished by or on behalf of Borrower or any pledgor, trustor, or guarantor of this Note to Lender herein, in any Transaction Document, or otherwise in connection with the issuance of this Note is false, incorrect, incomplete or misleading in any material respect when made or furnished; (k) any United States money judgment, writ or similar process is entered or filed against Borrower or any subsidiary of Borrower or any of its property or other assets for more than $1,500,000.00, and shall remain unvacated, unbonded or unstayed for a period of twenty (20) calendar days unless otherwise consented to by Lender; (l) Borrower fails to be DWAC Eligible; or (m) Borrower, any affiliate of Borrower, or any pledgor, trustor, or guarantor of this Note breaches any covenant or other term or condition contained in any Other Agreements beyond any applicable cure period contained therein.

11.2. Trigger Event Remedies. At any time following the occurrence of any Trigger Event, Lender may, at its option, increase the Outstanding Balance by applying the Trigger Effect (subject to the limitation set forth below).

11.3. Defaults. At any time following the occurrence of a Trigger Event, Lender may, at its option, send written notice to Borrower demanding that Borrower cure the Trigger Event within five (5) Business Days. If Borrower fails to cure the Trigger Event within the required five (5) Business Day cure period, the Trigger Event will automatically become an event of default hereunder (each, an “Event of Default”).

11.4. Default Remedies. At any time and from time to time following the occurrence of any Event of Default, Lender may accelerate this Note by written notice to Borrower, with the Outstanding Balance becoming immediately due and payable in cash at the Mandatory Default Amount. Notwithstanding the foregoing, upon the occurrence of any Trigger Event described in clauses (b) – (f) of Section 4.1, an Event of Default will be deemed to have occurred and the Outstanding Balance as of the date of the occurrence of such Trigger Event shall become immediately and automatically due and payable in cash at the Mandatory Default Amount, without any written notice required by Lender for the Trigger Event to become an Event of Default. At any time following the occurrence of any Event of Default, upon written notice given by Lender to Borrower, interest shall accrue on the Outstanding Balance beginning on the date the applicable Event of Default occurred at an interest rate equal to the lesser of twenty-two percent (22%) per annum or the maximum rate permitted under applicable law (“Default Interest”). For the avoidance of doubt, Lender may continue making Redemption Conversions at any time following an Event of Default until such time as the Outstanding Balance is paid in full. In connection with acceleration described herein, Lender need not provide, and Borrower hereby waives, any presentment, demand, protest or other notice of any kind, and Lender may immediately and without expiration of any grace period enforce any and all of its rights and remedies hereunder and all other remedies available to it under applicable law. Such acceleration may be rescinded and annulled by Lender at any time prior to payment hereunder and Lender shall have all rights as a holder of the Note until such time, if any, as Lender receives full payment. No such rescission or annulment shall affect any subsequent Trigger Event or Event of Default or impair any right consequent thereon. Nothing herein shall limit Lender’s right to pursue any other remedies available to it at law or in equity.

12. Unconditional Obligation; No Offset. Borrower acknowledges that this Note is an unconditional, valid, binding and enforceable obligation of Borrower not subject to offset, deduction or counterclaim of any kind. Borrower hereby waives any rights of offset it now has or may have hereafter against Lender, its successors and assigns, and agrees to make the payments called for herein in accordance with the terms of this Note.

13. Waiver. No waiver of any provision of this Note shall be effective unless it is in the form of a writing signed by the party granting the waiver. No waiver of any provision or consent to any prohibited action shall constitute a waiver of any other provision or consent to any other prohibited action, whether or not similar. No waiver or consent shall constitute a continuing waiver or consent or commit a party to provide a waiver or consent in the future except to the extent specifically set forth in writing.

14. Opinion of Counsel. In the event that an opinion of counsel is needed for any matter related to this Note, Lender has the right to have any such opinion provided by its counsel.

15. Governing Law; Venue. This Note shall be construed and enforced in accordance with, and all questions concerning the construction, validity, interpretation and performance of this Note shall be governed by, the internal laws of the State of Utah, without giving effect to any choice of law or conflict of law provision or rule (whether of the State of Utah or any other jurisdiction) that would cause the application of the laws of any jurisdiction other than the State of Utah. The provisions set forth in the Purchase Agreement to determine the proper venue for any disputes are incorporated herein by this reference.

16. Arbitration of Disputes. By its issuance or acceptance of this Note, each party agrees to be bound by the Arbitration Provisions (as defined in the Purchase Agreement) set forth as an exhibit to the Purchase Agreement.

17. Cancellation. After repayment of the entire Outstanding Balance, this Note shall be deemed paid in full, shall automatically be deemed canceled, and shall not be reissued.

18. Amendments. The prior written consent of both parties hereto shall be required for any change or amendment to this Note.

19. Assignments. Borrower may not assign this Note without the prior written consent of Lender. This Note may be offered, sold, assigned or transferred by Lender without the consent of Borrower, so long as such transfer is in accordance with applicable federal and state securities laws.

20. Notices. Whenever notice is required to be given under this Note, unless otherwise provided herein, such notice shall be given in accordance with the subsection of the Purchase Agreement titled “Notices.”

21. Liquidated Damages. Lender and Borrower agree that in the event Borrower fails to comply with any of the terms or provisions of this Note, Lender’s damages would be uncertain and difficult (if not impossible) to accurately estimate because of the parties’ inability to predict future interest rates, future share prices, future trading volumes and other relevant factors. Accordingly, Lender and Borrower agree that any fees, balance adjustments, Default Interest or other charges assessed under this Note are not penalties but instead are intended by the parties to be, and shall be deemed, liquidated damages.

22. Severability. If any part of this Note is construed to be in violation of any law, such part shall be modified to achieve the objective of Borrower and Lender to the fullest extent permitted by law and the balance of this Note shall remain in full force and effect.

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IN WITNESS WHEREOF, Borrower has caused this Note to be duly executed as of the Effective Date.

	BORROWER:
	AIM ImmunoTech Inc.

	By:	/s/ Thomas K. Equels
		Thomas K. Equels, CEO

ACKNOWLEDGED, ACCEPTED AND AGREED:
LENDER:
Streeterville Capital, LLC

By:	John M. Fife
	John M. Fife, President

ATTACHMENT 1

DEFINITIONS

For purposes of this Note, the following terms shall have the following meanings:

A1. “Business Day” means any day other than weekend days and dates which are official government holidays in the state of Utah.

A2. “Fundamental Transaction” means that (a) (i) Borrower or any of its subsidiaries shall, directly or indirectly, in one or more related transactions, consolidate or merge with or into (whether or not Borrower or any of its subsidiaries is the surviving corporation) any other person or entity, or (ii) Borrower or any of its subsidiaries shall, directly or indirectly, in one or more related transactions, sell, lease, license, assign, transfer, convey or otherwise dispose of all or substantially all of its respective properties or assets to any other person or entity, or (iii) Borrower or any of its subsidiaries shall, directly or indirectly, in one or more related transactions, allow any other person or entity to make a purchase, tender or exchange offer that is accepted by the holders of more than 50% of the outstanding shares of voting stock of Borrower (not including any shares of voting stock of Borrower held by the person or persons making or party to, or associated or affiliated with the persons or entities making or party to, such purchase, tender or exchange offer), or (iv) Borrower or any of its subsidiaries shall, directly or indirectly, in one or more related transactions, consummate a stock or share purchase agreement or other business combination (including, without limitation, a reorganization, recapitalization, spin-off or scheme of arrangement) with any other person or entity whereby such other person or entity acquires more than 50% of the outstanding shares of voting stock of Borrower (not including any shares of voting stock of Borrower held by the other persons or entities making or party to, or associated or affiliated with the other persons or entities making or party to, such stock or share purchase agreement or other business combination), or (v) Borrower or any of its subsidiaries shall, directly or indirectly, in one or more related transactions, reorganize, recapitalize or reclassify the Common Stock, other than an increase in the number of authorized shares of Borrower’s Common Stock, or reverse splits of its outstanding and authorized shares of Common Stock to meet NYSE American continued listing requirements or (b) any “person” or “group” (as these terms are used for purposes of Sections 13(d) and 14(d) of the 1934 Act and the rules and regulations promulgated thereunder) is or shall become the “beneficial owner” (as defined in Rule 13d-3 under the 1934 Act), directly or indirectly, of 50% of the aggregate ordinary voting power represented by issued and outstanding voting stock of Borrower.

A3. “Major Trigger Event” means any Event of Default occurring under Sections 4.1(a) - 4.1(h).

A4. “Mandatory Default Amount” means the Outstanding Balance following the application of the Default Effect.

A5. “Minor Trigger Event” means any Event of Default that is not a Major Trigger Event.

A6. “OID” means an original issue discount.

A7. “Other Agreements” means, collectively, (a) all existing and future agreements and instruments between, among or by Borrower (or an affiliate), on the one hand, and Lender (or an affiliate), on the other hand, and (b) any material financing agreement or a material agreement that affects Borrower’s ongoing business operations.

A8. “Outstanding Balance” means as of any date of determination, the Purchase Price, as reduced or increased, as the case may be, pursuant to the terms hereof for payment, offset, or otherwise, plus the OID, the Transaction Expense Amount, accrued but unpaid interest, collection and enforcements costs (including attorneys’ fees) incurred by Lender, transfer, stamp, issuance and similar taxes and fees incurred under this Note.

A9. “Purchase Price Date” means the date the Purchase Price is delivered by Lender to Borrower.

A10. “Trigger Effect” means multiplying the Outstanding Balance as of the date the applicable Trigger Event occurred by (a) fifteen percent (15%) for each occurrence of any Major Trigger Event, or (b) five percent (5%) for each occurrence of any Minor Trigger Event, and then adding the resulting product to the Outstanding Balance as of the date the applicable Trigger Event occurred, with the sum of the foregoing then becoming the Outstanding Balance under this Note as of the date the applicable Trigger Event occurred; provided that the Trigger Effect may only be applied three (3) times hereunder with respect to Major Trigger Events and three (3) times hereunder with respect to Minor Trigger Events; and provided further that the aggregate amount of the Trigger Effect for all Major Trigger Events and Minor Trigger Events shall not exceed twenty-five percent (25%).

AIM ImmunoTech Inc. 8-K