Silo Pharma, Inc.

As filed with the Securities and Exchange Commission on April 25, 2025.

Registration No. 333-

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORMS-1

REGISTRATION STATEMENT

UNDER THE SECURITIES ACT OF 1933

SILO PHARMA, INC.

(Exact name of registrant as specified in its charter)

**677 N. Washington Boulevard

Sarasota, Florida 34236

(718) 400-9031

(Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices)

Chief Executive Officer

677 N. Washington Boulevard

Sarasota, Florida 34236

(718) 400-9031

(Name, address including zip code, and telephone number, including area code, of agent for service)

With copies to:

**Approximate date of commencement of proposed sale to the public:**From time to time after the effective date of this registration statement.

If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, check the following box: ☒

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐

If this Form is a post-effective amendment filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule l2b-2 of the Exchange Act.

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. ☐

The registrant hereby amends this registration statement on such date or dates as may be necessary to delay its effective date until the registrant shall file a further amendment which specifically states that this registration statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act of 1933, as amended, or until the registration statement shall become effective on such date as the Securities and Exchange Commission, acting pursuant to said Section 8(a), may determine.

The information in this prospectus is not complete and may be changed. These securities may not be sold until the registration statement filed with the Securities and Exchange Commission is effective. This prospectus is not an offer to sell these securities and it is not soliciting an offer to buy these securities in any state where the offeror sale is not permitted.

Up to 4,716,981 Shares of Common Stock

Up to 4,716,981 Series A-1 Warrants to Purchase Shares of Common Stock

Up to 4,716,981 Series A-2 Warrants to Purchase Shares of Common Stock

Up to 4,716,981 Pre-Funded Warrants to Purchase Shares of Common Stock

Placement Agent Warrants to Purchase up to 353,773 Shares of Common Stock

Up to 14,504,716 Shares of Common Stock Underlying the Common Stock Purchase Warrants,

Pre-Funded Warrants and Placement Agent Warrants

We are offering up to 4,716,981 shares of our common stock, $0.0001 par value per share, or common stock, together with series A-1 common stock purchase warrants to purchase up to 4,716,981 shares of common stock, or the series A-1 warrants and series A-2 common stock purchase warrants to purchase up to 4,716,981 shares of common stock, or the series A-2 warrants and, collectively with the series A-1 warrants, the common stock purchase warrants. Each share of our common stock, or a pre-funded warrant in lieu thereof (as described below), is being sold together with one series A-1 warrant to purchase one share of common stock and one series A-2 warrant to purchase one share of common stock. The shares of common stock and common stock purchase warrants are immediately separable and will be issued separately in this offering, but must be purchased together in this offering. The assumed public offering price for each share of common stock and accompanying common stock purchase warrant is $1.06, which was the closing price of our common stock on The Nasdaq Capital Market on April 21, 2025. The series A-1 warrants and the series A-2 warrants will have an exercise price per share of $1.06, will be exercisable beginning on the effective date of shareholder approval of the issuance of the shares upon exercise of the common stock purchase warrants (“Warrant Shareholder Approval”), provided however, if the Pricing Conditions (as defined below) are met, the warrants will be exercisable upon issuance (the “Initial Exercise Date”). The series A-1 warrants will expire on the five (5) year anniversary of the Initial Exercise Date and the series A-2 warrants will expire on the eighteen (18) month anniversary of the Initial Exercise Date. As used herein, “Pricing Conditions” means that the combined offering price per share and accompanying common stock purchase warrants is such that the Warrant Shareholder Approval is not required under the rules of the Nasdaq Stock Market LLC (“Nasdaq”) because either (i) the offering is an at-the-market offering under Nasdaq rules and such price equals or exceeds the sum of (a) the applicable “Minimum Price” per share under Nasdaq Rule 5635(d) plus (b) $0.125 per whole share of common stock underlying the common stock purchase warrants or (ii) the offering is a discounted offering where the pricing and discount (including attributing a value of $0.125 per whole share underlying the common stock purchase warrants) meet the pricing requirements under Nasdaq’s rules.

We are also offering to each purchaser whose purchase of shares of our common stock in this offering would otherwise result in the purchaser, together with its affiliates and certain related parties, beneficially owning more than 4.99% (or, at the election of the purchaser, 9.99%) of the outstanding shares of common stock immediately following the consummation of this offering, the opportunity to purchase, if the purchaser so chooses, pre-funded warrants to purchase shares of common stock, or the pre-funded warrants, in lieu of shares of common stock. Each pre-funded warrant will be exercisable for one share of our common stock and will be immediately exercisable and will expire when exercised in full. The purchase price of each pre-funded warrant and accompanying series A-1 and series A-2 common stock purchase warrants will equal the price per share of common stock being sold to the public, minus $0.0001, and the exercise price of each pre-funded warrant will be $0.0001 per share. The pre-funded warrants and common stock purchase warrants are immediately separable and will be issued separately in this offering, but must be purchased together in this offering. For each pre-funded warrant that we sell, the number of shares of our common stock that we are offering will be decreased on a one-for-one basis. We are also registering the shares of common stock issuable upon exercise of the common stock purchase warrants, pre-funded warrants and placement agent warrants pursuant to this prospectus.

This offering will terminate on May 15, 2025, unless we decide to terminate the offering (which we may do at any time in our discretion) prior to that date. We will have one closing for all the securities purchased in this offering. The public offering price per share (or pre-funded warrant) and common stock purchase warrants will be fixed for the duration of this offering.

Our common stock is listed on the Nasdaq Capital Market (“Nasdaq”) under the symbol “SILO.” We have not applied, and do not intend to apply, to list the pre-funded warrants or the common stock purchase warrants on The Nasdaq Capital Market. On April 21, 2025, the closing price of our common stock on the Nasdaq Capital Market was $1.06 per share. The trading price of our common stock has been, and may continue to be, subject to wide price fluctuations in response to various factors, many of which are beyond our control, including those described in “Risk Factors.”

We have engaged H.C. Wainwright & Co., LLC, or the placement agent, to act as our exclusive placement agent in connection with this offering. The placement agent has agreed to use its reasonable best efforts to arrange for the sale of the securities offered by this prospectus. The placement agent is not purchasing or selling any of the securities we are offering and the placement agent is not required to arrange the purchase or sale of any specific number or dollar amount of securities. We have agreed to pay to the placement agent the fees set forth in the table below, which assumes that we sell all of the securities offered by this prospectus. Since we will deliver the securities to be issued in this offering upon our receipt of investor funds, there is no arrangement for funds to be received in escrow, trust or similar arrangement. There is no minimum offering requirement as a condition of closing of this offering. Because there is no minimum offering amount required as a condition to closing this offering, we may sell fewer than all of the securities offered hereby, which may significantly reduce the amount of proceeds received by us, and investors in this offering will not receive a refund in the event that we do not sell an amount of securities sufficient to pursue our business goals described in this prospectus. In addition, because there is no escrow account and no minimum offering amount, investors could be in a position where they have invested in our company, but we are unable to fulfill all of our contemplated objectives due to a lack of interest in this offering. Further, any proceeds from the sale of securities offered by us will be available for our immediate use, despite uncertainty about whether we would be able to use such funds to effectively implement our business plan. See the section entitled “Risk Factors” for more information. We will bear all costs associated with the offering. See “Plan of Distribution” beginning on page 90 of this prospectus for more information regarding these arrangements.

The number of shares of common stock, pre-funded warrants and common stock purchase warrants offered by this prospectus and all other applicable information has been determined based on an assumed public offering price of $1.06 per share of common stock and accompanying series A-1 and A-2 common stock purchase warrants, which is the closing price of our common stock of $1.06 on April 21, 2025 . The public offering price per share of common stock and accompanying common stock purchase warrants and per pre-funded warrant and accompanying common stock purchase warrants will be determined between us and investors based on market conditions at the time of pricing, and may be at a discount to the then current market price of our common stock. The recent market price used throughout this prospectus may not be indicative of the actual offering price. The actual public offering price may be based upon a number of factors, including our history and our prospects, the industry in which we operate, our past and present operating results, the previous experience of our executive officers and the general condition of the securities markets at the time of this offering.

Investing in our securities involves a high degree of risk. See “Risk Factors” beginning on page 9 of this prospectus for a discussion of information that should be considered in connection with an investment in our securities. Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

The delivery to purchasers of the shares of common stock, pre-funded warrants, and common stock purchase warrants in this offering is expected to be made on or about , 2025, subject to satisfaction of certain customary closing conditions.

H.C. Wainwright & Co.

The date of this prospectus is , 2025.

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