# EDGAR Filing Document

**Accession Number:** 0001429260
**File Stem:** 0001104659-26-032728
**Filing Date:** 2026-3
**Character Count:** 9901
**Document Hash:** 24bb99b385ba5c2a259f204eefc9cbbc
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-26-032728.hdr.sgml**: 20260320

**ACCESSION NUMBER**: 0001104659-26-032728

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13D/A

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260320

**DATE AS OF CHANGE**: 20260320

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Fortress Biotech, Inc.
- **CENTRAL INDEX KEY:** 0001429260
- **STANDARD INDUSTRIAL CLASSIFICATION:** PHARMACEUTICAL PREPARATIONS [2834]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 205157386
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-86661
- **FILM NUMBER:** 26778434

**BUSINESS ADDRESS:**
- **STREET 1:** 1111 KANE CONCOURSE
- **STREET 2:** SUITE 301
- **CITY:** BAY HARBOR ISLANDS
- **STATE:** FL
- **ZIP:** 33154
- **BUSINESS PHONE:** 781-652-4500

**MAIL ADDRESS:**
- **STREET 1:** 1111 KANE CONCOURSE
- **STREET 2:** SUITE 301
- **CITY:** BAY HARBOR ISLANDS
- **STATE:** FL
- **ZIP:** 33154

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** CORONADO BIOSCIENCES INC
- **DATE OF NAME CHANGE:** 20080310
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** ROSENWALD LINDSAY A MD
- **CENTRAL INDEX KEY:** 0000941841

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A

**MAIL ADDRESS:**
- **STREET 1:** 2 GANSEVOORT ST, FL9
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10014

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** ROSENWALD LINDSAY MD
- **DATE OF NAME CHANGE:** 19950316

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## SCHEDULE 13D

### Under the Securities Exchange Act of 1934

**(Amendment No. 5)**

**Fortress Biotech, Inc.**

*(Name of Issuer)*

**Common Stock, $0.001 Par Value**

*(Title of Class of Securities)*

**—**

*(CUSIP Number)*

**Fortress Biotech, Inc.**<br>1111 Kane Concourse, Suite 301<br>Bay Harbor Islands FL 33154<br>(718) 652-4500

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

**03/18/2026**

*(Date of Event Which Requires Filing of this Statement)*

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Lindsay A. Rosenwald, M.D.** | Name of reporting person<br>**Lindsay A. Rosenwald, M.D.** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**X1** | Citizenship or place of organization<br>**X1** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**6917715.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**6917715.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**0.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**6917715.00** | Aggregate amount beneficially owned by each reporting person<br>**6917715.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[x] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[x] | |
| 13 | Percent of class represented by amount in Row (11)<br>**20.7%** | Percent of class represented by amount in Row (11)<br>**20.7%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**IN** | Type of Reporting Person (See Instructions)<br>**IN** | |

---

**Comment for Reporting Person:** Includes 475,424 shares of unvested restricted Common Stock granted to the Reporting Person pursuant to the Fortress Biotech, Inc. Long Term Incentive Plan (and related Restricted Stock Award Agreement) subject to repurchase until vested.

The aggregate amount of shares of Common Stock owned by the Reporting Person reported on this Schedule 13D excludes 96,919 shares of Common Stock held by trusts established for the benefit of the Reporting Person's family, over which the Reporting Person does not have voting or dispositive control.

All percentage calculations set forth herein are based upon 31,037,937 shares of the Issuer's common stock as of December 11, 2025 as reported by the Issuer on its 424B3 Prospectus filed with the Securities and Exchange Commission on December 18, 2025.

This Amendment No. 5 to Schedule 13D (this "Amendment No. 5") amends and supplements the Schedule 13D filed on January 28, 2016 (as amended and supplemented through the date of this Amendment No. 5, collectively, the "Schedule 13D") relating to the Common Stock of Fortress Biotech, Inc. (the "Issuer") beneficially owned by Lindsay A. Rosenwald, M.D. (the "Reporting Person"). Except as specifically provided herein, this Amendment No. 5 does not modify any of the information previously reported on the Schedule 13D. Capitalized terms used but not defined herein shall have the same meanings as are ascribed to them in the Schedule 13D, as applicable.

**Item 1. Security and Issuer**

**(a) Title of Class of Securities:**
Common Stock, $0.001 Par Value

**(b) Name of Issuer:**
Fortress Biotech, Inc.

**(c) Address of Issuer's Principal Executive Offices:**
1111 Kane Concourse, Suite 301, Bay Harbor Islands, FL, 33154

**Item 4. Purpose of Transaction**

The Reporting Person was granted the shares of Common Stock on each of January 1, 2025 and March 18, 2026 pursuant to the LTIP and Award Agreement and upon the determination that the Reporting Person had achieved 100% of the relevant goals and objectives established by the Compensation Committee of the Issuer's Board. The Reporting Person does not have any present plans or proposals that relate to or would result in: (i) the acquisition by any person of additional securities of Issuer, or the disposition of securities of Issuer; (ii) an extraordinary corporate transaction, such as a merger, reorganization or liquidation, involving Issuer or any of Issuer's subsidiaries; (iii) a sale or transfer of a material amount of assets of Issuer or any of Issuer's subsidiaries; (iv) any change in the present board of directors or management of Issuer; (v) any material change in the present capitalization or dividend policy of Issuer; (vi) any other material change in Issuer's business or corporate structure; (vii) changes in Issuer's charter, by-laws or instruments corresponding thereto or other actions which may impede the acquisition of control of Issuer by any person; (viii) causing a class of securities of Issuer to be de-listed from a national securities exchange or to cease to be authorized to be quoted in an interdealer quotation system of a registered national securities association; (ix) a class of equity securities of Issuer becoming eligible for termination of registration pursuant to Section 12(g)(4) of the Exchange Act; or (x) any action similar to any of those enumerated above.

**Item 5. Interest in Securities of the Issuer**

**(a)**
The Reporting Person is the beneficial owner of an aggregate of 6,917,715 shares of Common Stock, which consists of (i) 4,050,765 currently issued and outstanding shares of Common Stock held directly by the Reporting Person, (ii) 475,424 shares of unvested restricted Common Stock granted to the Reporting Person pursuant to the LTIP and related Award Agreements subject to repurchase until vested, (iii)  2,330,874 shares underlying warrants that are currently exercisable, (iv) 49,524 shares of Common Stock held by Paramount Biosciences, LLC, and (v) 11,398 shares of Common Stock held by Capretti Grandi LLC, which represents approximately 20.7% of the outstanding Common Stock based upon 31,037,937 shares of Common Stock as reported by the issuer in a Prospectus Supplement filed with the SEC on December 18, 2025.

The Reporting Person has voting and dispositive control over the shares of Common Stock held by Paramount Biosciences, LLC and Capretti Grandi LLC. The amount reported under this item does not include 96,919 shares of Common Stock held by trusts established for the benefit of the Reporting Person's family, over which the Reporting Person does not have voting or dispositive control.

**(b)**
The Reporting Person has sole voting and dispositive power of 6,917,715 shares of Common Stock beneficially owned.

**(c)**
The Reporting Person was granted 475,424 shares of Common Stock on March 18, 2026 pursuant to the LTIP and Award Agreement and upon the determination that the Reporting Person had achieved 100% of the relevant goals and objectives established by the Compensation Committee of the Issuer's Board. The shares of Common Stock are subject to repurchase by the Issuer as set forth in the LTIP and Award Agreement.

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

Reference is made to the LTIP and Award Agreement in Item 5 above.

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Lindsay A. Rosenwald, M.D.

**Signature:** /s/ Lindsay A. Rosenwald

**Name/Title:** Lindsay A. Rosenwald, M.D. / Chairman, President and Chief Executive Officer

**Date:** 03/20/2026