| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Meister Keith A. | Director, 10%+ Owner | C/O CORVEX MANAGEMENT LP, 667 MADISON AVENUE, NEW YORK | /s/ Keith Meister | 06 Jan 2026 | 0001307631 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | VSTS | Common Stock, par value $0.01 per share | Award | $0 | +15,958 | +98% | $0.000000 | 32,190 | 02 Jan 2026 | Direct | F1 |
| holding | VSTS | Common Stock | 19,813,963 | 02 Jan 2026 | See footnotes | F2, F3 |
| Id | Content |
|---|---|
| F1 | Represents restricted stock units received in lieu of cash retainer, which vest in four equal annual installments on April 2, 2026, July 2, 2026, October 2, 2026 and January 2, 2027. |
| F2 | Investment funds advised by Corvex Management LP ("Corvex") directly hold 19,813,963 shares of common stock of the Issuer reported herein. Mr. Meister may be deemed to indirectly beneficially own these shares by virtue of Mr. Meister's control of the general partner of Corvex. |
| F3 | For the purposes of this filing, each of Corvex or Mr. Meister disclaims beneficial ownership of the reported securities except to the extent of his or its pecuniary interest therein. This filing shall not be deemed an admission that Corvex or Mr. Meister is the beneficial owner of any of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or otherwise. |