03/11/2026 | Press release | Distributed by Public on 03/11/2026 15:36
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FORM 4
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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940 |
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| Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. | |||
| Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number. | SEC 1474 (9-02) | ||
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1. Title of Derivative Security (Instr. 3) |
2. Conversion or Exercise Price of Derivative Security | 3. Transaction Date (Month/Day/Year) | 3A. Deemed Execution Date, if any (Month/Day/Year) |
4. Transaction Code (Instr. 8) |
5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) |
6. Date Exercisable and Expiration Date (Month/Day/Year) |
7. Title and Amount of Underlying Securities (Instr. 3 and 4) |
8. Price of Derivative Security (Instr. 5) |
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) |
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) |
11. Nature of Indirect Beneficial Ownership (Instr. 4) |
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| Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | ||||||||
| Restricted Stock Units | $ 0 (1) | 03/10/2026 | M | 1,936(1) | 03/01/2027(4) | 03/01/2029(4) | Common Stock | 1,936 | $ 0 | 5,621 | D | ||||
| Reporting Owner Name / Address | Relationships | |||
| Director | 10% Owner | Officer | Other | |
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Chang Michael L. 1776 YORKTOWN STREET SUITE 700 HOUSTON, TX 77056 |
Chief Medical Officer | |||
| /s/ Michael Chang | 03/11/2026 | |
| **Signature of Reporting Person | Date |
| * | If the form is filed by more than one reporting person, see Instruction 4(b)(v). |
| ** | Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a). |
| (1) | Restricted stock units convert into common stock on a one-for-one basis. |
| (2) | Of the 2,084 shares issued subsequent to vesting, 769 shares were sold to cover tax withholding obligations. |
| (3) | Michael Chang PLLC ("CHANG") is the direct beneficial owner of 82,356 shares of Common Stock. Dr. Chang as the 100% owner and sole manager of CHANG, is an indirect beneficial owner of such shares. Dr. Chang is the direct owner of 984 shares. |
| (4) | On March 10, 2026, the Reporting Person was granted 1,936 RSUs, which vest in three equal installments on March 1, 2027, March 1, 2028, and March 1, 2029. |