02/27/2026 | Press release | Distributed by Public on 02/27/2026 20:42
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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 | ||||||||
| Employee Stock Option (Right to Buy) | $51.02 | 02/25/2026 | A | 61,667 | (1) | 02/25/2036 | COMMON STOCK | 61,667 | $ 0 | 61,667 | D | ||||
| 2026 Performance-Based Restricted Share Unit | (2) | 02/25/2026 | A | 53,900 | (3) | (3) | COMMON STOCK | 53,900 | $ 0 | 53,900 | D | ||||
| Restricted Share Unit | (4) | 02/25/2026 | A | 19,600 | (5) | (5) | COMMON STOCK | 19,600 | $ 0 | 66,959 | D | ||||
| Reporting Owner Name / Address | Relationships | |||
| Director | 10% Owner | Officer | Other | |
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Saak Aaron W 950 WINTER STREET 4TH FLOOR NORTH WALTHAM, MA 02451 |
X | CEO | ||
| /s/ Paul G. Igoe, Attorney-in-Fact | 02/27/2026 | |
| **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) | Options become exercisable 25% per year over four years beginning on the first anniversary of the date of grant. |
| (2) | Each 2026 Performance-Based Restricted Share Unit (RSU) represents a contingent right to receive a number of shares of issuer common stock between 0 and 2.00. |
| (3) | 2026 Performance-Based RSUs vest on December 31, 2028, if issuer's common stock achieves certain performance criteria for each fiscal year over the three years ending December 31, 2028, and contingent on continued employment with issuer, subject to certain exceptions. |
| (4) | Restricted Share Units convert into common stock on a one-for-one basis. |
| (5) | Restricted Share Units vest 25% per year over four years beginning on the first anniversary of the grant date. |