| Name | Relationship | Address | Signature | Signature date | CIK | 
|---|---|---|---|---|---|
| TULLIS JAMES L L | Director | 950 WINTER STREET, 4TH FLOOR NORTH, WALTHAM | /s/ Paul G. Igoe, Attorney-in-Fact | 2025-06-12 | 0001230641 | 
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes | 
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | CXT | COMMON STOCK | Gift | $0 | -60 | -1.26% | $0.00 | 4.72K | Jun 11, 2025 | Direct | |
| holding | CXT | COMMON STOCK | 416 | Jun 11, 2025 | 401(K) | ||||||
| holding | CXT | COMMON STOCK | 586 | Jun 11, 2025 | By family trust | F1 | 
| Id | Content | 
|---|---|
| F1 | Reflects one additional share that was inadvertently omitted from the reporting person's total reported on the Form 4 filed on December 1, 2023. |