SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

SCHEDULE 13D

(Rule 13d-101)

Under the Securities Exchange Act of 1934

(Amendment No. 3)*

Alpine Income Property Trust, Inc.

(Name of Issuer)

Common Stock, $0.01 par value

(Title of Class of Securities)

02083X 103

(CUSIP Number)

Daniel E. Smith, Esq.

Senior Vice President – General Counsel & Corporate Secretary

Consolidated-Tomoka Land Co.

1140 N. Williamson Boulevard, Suite 140

Daytona Beach, Florida 32114

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

With a copy to:

Robert B. Robbins, Esq.

Ryan S. Brewer, Esq.

Pillsbury Winthrop Shaw Pittman, LLP

1200 Seventeenth Street, NW

Washington, DC 20036

March 12, 2020

(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box  ☐.

Note. Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7 for other parties to whom copies are to be sent.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

2

The following constitutes Amendment No. 3 to the Schedule 13D filed by the undersigned on December 2, 2019 (the “Original Schedule 13D”), as amended and supplemented by Amendment No. 1 to the Original Schedule 13D, filed on December 16, 2019, as amended and supplemented by Amendment No. 2 to the Original Schedule 13D filed on March 4, 2020 (as amended and supplemented, collectively, this “Schedule 13D”) relating to the common stock, $0.01 par value (the “Common Stock”) of Alpine Income Property Trust, Inc. (the “Issuer”), a Daytona Beach, Florida based, real estate investment trust.

Item 2 is hereby amended and restated in its entirety as follows:

This Schedule 13D is being filed by:

Each of the foregoing is referred to as a “Reporting Person” and collectively as the “Reporting Persons.” Each of the Reporting Persons files this Schedule 13D jointly. The Reporting Persons are filing this Statement jointly, as they may be considered a “group” under Section 13(d)(3) of the Act. However, neither the fact of this filing nor anything contained herein shall be deemed to be an admission by the Reporting Persons that such a group exists.

3

Item 3 is hereby amended and restated in its entirety as follows:

On November 21, 2019, CTO committed to purchase 421,053 shares of Common Stock (the “IPO Shares”) in the Issuer’s initial public offering for a total purchase price of $8,000,000 (the “IPO Purchase”). The purchase of the IPO Shares was funded with working capital and a draw on CTO’s existing revolving credit facility (the “Credit Line Draw”). The closing of the IPO Purchase occurred on November 26, 2019.

Concurrent with the Issuer’s initial public offering, on November 26, 2019, CTO entered into a stock purchase agreement by and between CTO and the Issuer (the “Stock Purchase Agreement”). Pursuant to the Stock Purchase Agreement, the Issuer agreed to sell and CTO agreed to purchase, 394,737 shares of Common Stock (the “Private Placement Shares”) for a total purchase price of $7,500,000, following the satisfaction of certain closing conditions specified therein (the “Private Placement”). The purchase of the Private Placement Shares was funded through working capital and the Credit Line Draw. The closing of the Private Placement occurred on November 26, 2019.

Concurrent with the Issuer’s initial public offering, on November 26, 2019, CTO and certain of its affiliates entered into contribution agreements with Alpine Income Property OP, LP (the “Operating Partnership”), pursuant to which CTO and such affiliates contributed to the Operating Partnership five properties in exchange for an aggregate of 1,223,854 units of limited partnership interest of the Operating Partnership (“Units”), which had an initial value of $23,253,226 (the “Contribution Transactions”). The closing of the Contribution Transactions occurred on November 26, 2019.

The Common Stock purchased by each of John P. Albright, Mark E. Patten, Daniel E. Smith and Steven R. Greathouse was purchased with personal investment funds in open market purchases. The aggregate purchase price of the shares of Common Stock beneficially owned by John P. Albright is approximately $52,435.00, including brokerage commissions. The aggregate purchase price of the shares of Common Stock beneficially owned by Mark E. Patten is approximately $13,540.00, including brokerage commissions. The aggregate purchase price of the shares of Common Stock beneficially owned by Daniel E. Smith is approximately $53,672.80, including brokerage commissions. The aggregate purchase price of the shares of Common Stock beneficially owned by Steven R. Greathouse is approximately $112,121.53, including brokerage commissions.

4

Items 4 is hereby amended and restated in its entirety as follows:

The Reporting Persons do not have any present plan or proposal which would relate to or result in any of the matters set forth in subparagraphs (a) - (j) of Item 4 of Schedule 13D except as otherwise set forth in this Schedule 13D or such as would occur upon or in connection with completion of, or following, any of the actions discussed in this Schedule 13D. The Reporting Persons may from time to time, depending on market conditions and other considerations, including the relevant securities laws and any agreement or agreements that have been or may be entered into with the Issuer, purchase additional shares of Common Stock or Units or dispose of some or all of the shares of Common Stock or Units held by it, and the Reporting Persons reserve the right to change their intentions with respect to any or all of the matters referred to in this Item 4 of Schedule 13D. The Reporting Persons may enter into one or more 10b5-1 trading plans to execute purchases and/or dispositions of Common Stock or Units from time to time. A subsidiary of CTO serves as the external manager of the Issuer pursuant to the management agreement described in Item 6 of this Schedule 13D.

John P. Albright is the President and Chief Executive Officer of the Issuer. Mark E. Patten is the Senior Vice President, Chief Financial Officer and Treasurer of the Issuer. Daniel E. Smith is the Senior Vice President, General Counsel and Corporate Secretary of the Issuer. Steven R. Greathouse is the Senior Vice President, Investments of the Issuer.

Item 5. Interest in Securities of the Issuer.

Item 5 is hereby amended and restated in its entirety as follows:

5

Item 6. Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer.

Item 6 is hereby amended and restated in its entirety as follows:

Other than as described in this Schedule 13D, there are no contracts, arrangements, understandings or relationships between or among any of the Reporting Persons with respect to the securities of the Issuer.

On November 26, 2019, Alpine Income Property Manager, LLC, a wholly owned subsidiary of CTO (the “Manager”), the Issuer and the Operating Partnership entered into a Management Agreement (the “Management Agreement”). Pursuant to the Management Agreement, the Manager manages the Issuer’s assets and the day-to-day operations of the Issuer. In connection with the services provided by the Manager, the Manager is entitled to receive a base management fee equal to 0.375% per quarter of the Issuer’s “total equity” (as defined in the Management Agreement and based on a 1.5% annual rate), calculated and payable in cash, quarterly in arrears. In addition, the Manager is entitled to receive an incentive fee, payable annually, in the amount equal to the greater of (a) $0.00 and (b) the product of (i) 15% multiplied by (ii) the “outperformance amount” multiplied by (c) the “weighted average shares” (as such terms are defined in the Management Agreement). If the Management Agreement is terminated without cause, the Manager shall receive a termination fee equal to three times the sum of (x) the average annual base management fee earned by the Manager during the 24-month period immediately preceding the most recently completed calendar quarter prior to the termination date and (y) the average annual incentive fee earned by the Manager during the two most recently completed “measurement periods” (as defined in the management agreement) prior to the termination date.

CTO, the Manager, John P. Albright, Mark E. Patten, Daniel E. Smith and Steven R. Greathouse have agreed with the underwriters of the Issuer’s initial public offering not to offer, sell, transfer or otherwise dispose of any Common Stock or any securities convertible into or exercisable or exchangeable for, exercisable for, or repayable with Common Stock, for a period of 180 days after the date of the Issuer’s initial public offering without first obtaining the written consent of Raymond James & Associates, Inc.

The Reporting Persons entered into a Joint Filing Agreement with respect to the joint filing on behalf of each of them of statements on Schedule 13D with respect to the securities of the Issuer.

Item 7 is hereby amended to include the following:

SIGNATURE PAGE FOLLOWS

6

SIGNATURES

After reasonable inquiry and to the best of his knowledge and belief, each of the undersigned certifies that the information set forth in this Statement is true, complete and correct.

Dated: March 16, 2020

7

Annex A

Set forth below are the transactions in Shares that were effected by CTO’s directors and executive officers during the past 60 days.

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Exhibit 99.9

Lock-up Agreement

November 21, 2019

Raymond James & Associates, Inc.

880 Carillon Parkway

St. Petersburg, Florida 33716

As Representative of the Several Underwriters

Dear Sirs:

This letter is delivered to you pursuant to the Underwriting Agreement (the “Underwriting Agreement”) to be entered into by the Company, as issuer, Alpine Income Property OP, LP (the “Operating Partnership”), Alpine Income Property Manager, LLC (the “Manager”) and Raymond James & Associates, Inc. as the representative (the “Representative”) of certain underwriters (the “Underwriters”) to be named therein. Upon the terms and subject to the conditions of the Underwriting Agreement, the Underwriters intend to effect a public offering (the “Offering”) of the Company’s common stock, par value $0.01 per share (the “Shares”), as described in and contemplated by the registration statement of the Company on Form S-11 (File No. 333-234304) (the “Registration Statement”).

The undersigned recognizes that it is in the best financial interests of the undersigned, as an officer or director, or an owner of stock, options, warrants or other securities of the Company (the “Company Securities”), that the Company complete the proposed Offering.

The undersigned further recognizes that the Company Securities held by the undersigned are, or may be, subject to certain restrictions on transferability, including those imposed by United States federal securities laws. Notwithstanding these restrictions, the undersigned has agreed to enter into this letter agreement to further assure the Underwriters that the Company Securities of the undersigned, now held or hereafter acquired, will not enter the public market at a time that might impair the underwriting effort.

Therefore, as an inducement to the Underwriters to execute the Underwriting Agreement, the undersigned hereby acknowledges and agrees that the undersigned will not, directly or indirectly, (i) offer, pledge, sell, contract to sell, contract to purchase, grant any option, right or warrant to purchase, lend or otherwise dispose of (or enter into any transaction or device that is designed to, or could be expected to, result in the disposition by any person at any time in the future of) any Company Securities (collectively, a “Disposition”), or any securities convertible into or exercisable or exchangeable for, or any rights to purchase or otherwise acquire, any Company Securities held by the undersigned or acquired by the undersigned after the date hereof, or that may be deemed to be beneficially owned by the undersigned (collectively, the “Lock-Up Securities”), pursuant to the Rules and Regulations promulgated under the Securities Act of

1933, as amended (the “Act”), and the Securities Exchange Act of 1934, as amended (the “Exchange Act”), for a period commencing on the date hereof and ending 180 days after the date of the Company’s prospectus first filed pursuant to Rule 424(b) under the Act, inclusive (the “Lock-Up Period”), without the prior written consent of Raymond James & Associates, Inc., (ii) enter into any swap or other agreement that transfers to another, in whole or in part, any of the economic consequences of ownership of such Lock-Up Securities, whether any such transaction described in clause (i) or (ii) above is to be settled by delivery of the Lock-Up Securities or other Company Securities, in cash or otherwise, or (iii) exercise or seek to exercise or effectuate in any manner any rights of any nature that the undersigned has or may have hereafter to require the Company to register under the Act the undersigned’s sale, transfer or other disposition of any of the Lock-Up Securities or other securities of the Company held by the undersigned, or to otherwise participate as a selling securityholder in any manner in any registration effected by the Company under the Act, including under the Registration Statement, during the Lock-Up Period. The foregoing restrictions are expressly agreed to preclude the undersigned from engaging in any hedging, collar (whether or not for any consideration) or other transaction that is designed to or reasonably expected to lead or result in a Disposition of Lock-Up Securities during the Lock-Up Period, even if such Lock-Up Securities would be disposed of by someone other than such holder. Such prohibited hedging or other transactions would include any short sale or any purchase, sale or grant of any right (including any put or call option or reversal or cancellation thereof) with respect to any Lock-Up Securities or with respect to any security (other than a broad-based market basket or index) that includes, relates to or derives any significant part of its value from Lock-Up Securities.

If the undersigned is an officer or director of the Company, (i) the Representative agrees that, at least three business days before the effective date of any release or waiver of the foregoing restrictions in connection with a transfer of shares of the Company’s common stock, par value $0.01 per share (“Common Stock”), the Representative will notify the Company of the impending release or waiver and (ii) the Company will agree in the Underwriting Agreement to announce the impending release or waiver by press release through a major news service at least two business days before the effective date of the release or waiver. Any release or waiver granted by the Representative hereunder to any such officer or director shall only be effective two business days after the publication date of such press release. The provisions of this paragraph will not apply if (i) the release or waiver is effected solely to permit a transfer not for consideration and (ii) the transferee has agreed in writing to be bound by the same terms described in this letter to the extent and for the duration that such terms remain in effect at the time of the transfer.

Notwithstanding the agreement not to make any Disposition during the Lock-Up Period, the Representative has agreed that the undersigned may transfer the undersigned’s Lock-Up Securities (i) as a bona fide gift or gifts; (ii) to any trust for the direct or indirect benefit of the undersigned or the immediate family of the undersigned or if the undersigned is a trust, to any trust beneficiary (including such trust beneficiary’s estate) of the undersigned; (iii) by will or intestate succession upon the death of the undersigned; (iv) as a distribution to members, limited partners or stockholders of the undersigned; (v) to the undersigned’s affiliates; or (vi) with the prior written consent of the Representative on behalf of the Underwriters; provided, however, that in the case of any transfer pursuant to (i), (ii),(iii), (iv) or (v) above, it shall be a condition to the transfer that the donee, trustee, heir, or other transferee, as the case may be, agree to be bound

in writing by the restrictions set forth herein; provided, further, that any transfer pursuant to (i), (ii), (iii), (iv) or (v) above shall not involve a disposition for value; provided, further, that no filing by the undersigned or any other party (including any donor, donee, transferor or transferee) under the Exchange Act or other public announcement reporting a reduction in beneficial ownership of shares of Common Stock held by the undersigned shall be required or shall be made voluntarily in connection with such transfer. For purposes of this letter, “immediate family” shall mean any relationship by blood, marriage or adoption, not more remote than first cousin.

It is understood that, if the Underwriting Agreement (other than the provisions thereof that survive termination) shall terminate or be terminated prior to payment for and delivery of the Shares, the Representative will release the undersigned from the obligations under this letter agreement.

In furtherance of the foregoing, the Company and its transfer agent and registrar are hereby authorized to decline to make any transfer of Lock-Up Securities if such transfer would constitute a violation or breach of this letter. This letter shall be binding on the undersigned and the respective successors, heirs, personal representatives and assigns of the undersigned. Capitalized terms used but not defined herein have the respective meanings assigned to such terms in the Underwriting Agreement.

[Signature Page to Lock-Up Agreement]

Exhibit 99.10

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, the undersigned agree that (1) only one statement containing the information required by Schedule 13D and any further amendments thereto need to be filed with respect to the beneficial ownership by each of the undersigned of shares of common stock of Alpine Income Property Trust, Inc., a Maryland corporation and (2) this Joint Filing Agreement may be included as an exhibit to the Schedule 13D/A, provided that, as contemplated by Section 13d-1(k)(1)(ii), no person will be responsible for the completeness or accuracy of the information concerning the other persons making the filing unless such person knows or has reason to believe that such information is inaccurate. This Joint Filing Agreement may be executed in any number of counterparts, all of which taken together will constitute one and the same instrument.

Dated: March 16, 2020